Dell PowerSwitch S4048T-ON Manual

Dell EMC Configuration Guide for the S4048T–ON System

9.14.2.8

September 2020

Rev. A00

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

© 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

Contents

Chapter 1: About this Guide.........................................................................................................	33
Audience..............................................................................................................................................................................	33
Conventions........................................................................................................................................................................	33
Related Documents...........................................................................................................................................................	33
Chapter 2: Configuration Fundamentals......................................................................................	34
Accessing the Command Line........................................................................................................................................	34
CLI Modes...........................................................................................................................................................................	34
Navigating CLI Modes................................................................................................................................................	36
The do Command..............................................................................................................................................................	39
Undoing Commands..........................................................................................................................................................	39
Obtaining Help....................................................................................................................................................................	40
Entering and Editing Commands...................................................................................................................................	40
Command History...............................................................................................................................................................	41
Filtering show Command Outputs.................................................................................................................................	41
Multiple Users in Configuration Mode..........................................................................................................................	42
Chapter 3: Getting Started..........................................................................................................	43
Console Access..................................................................................................................................................................	43
Serial Console...............................................................................................................................................................	43
Accessing the CLI Interface and Running Scripts Using SSH................................................................................	44
Default Configuration.......................................................................................................................................................	45
Configuring a Host Name................................................................................................................................................	45
Accessing the System Remotely...................................................................................................................................	45
Configure the Management Port IP Address.......................................................................................................	46
Configure a Management Route..............................................................................................................................	46
Configuring a Username and Password.................................................................................................................	46
Configuring the Enable Password.................................................................................................................................	47
Configuration File Management.....................................................................................................................................	48
Copy Files to and from the System.........................................................................................................................	48
Mounting an NFS File System..................................................................................................................................	48
Save the Running-Configuration.............................................................................................................................	50
Configure the Overload Bit for a Startup Scenario............................................................................................	50
Viewing Files.................................................................................................................................................................	50
Compressing Configuration Files..............................................................................................................................	51
Managing the File System...............................................................................................................................................	53
Enabling Software Features on Devices Using a Command Option.....................................................................	54
View Command History...................................................................................................................................................	54
Upgrading Dell EMC Networking OS............................................................................................................................	56
Verify Software Images Before Installation................................................................................................................	56
Using HTTP for File Transfers........................................................................................................................................	57
Chapter 4: Management..............................................................................................................	58
Configuring Privilege Levels...........................................................................................................................................	58

Contents 3

Removing a Command from EXEC Mode..............................................................................................................	59
Moving a Command from EXEC Privilege Mode to EXEC Mode....................................................................	59
Allowing Access to CONFIGURATION Mode Commands.................................................................................	59
Allowing Access to Different Modes......................................................................................................................	59
Applying a Privilege Level to a Username..............................................................................................................	61
Applying a Privilege Level to a Terminal Line........................................................................................................	61
Configuring Logging..........................................................................................................................................................	61
Audit and Security Logs..............................................................................................................................................	61
Configuring Logging Format .............................................................................................................................	63
Display the Logging Buffer and the Logging Configuration..............................................................................	63
Setting Up a Secure Connection to a Syslog Server.................................................................................	64
Sending System Messages to a Syslog Server....................................................................................................	65
Track Login Activity..........................................................................................................................................................	65
Restrictions for Tracking Login Activity................................................................................................................	65
Configuring Login Activity Tracking........................................................................................................................	66
Display Login Statistics..............................................................................................................................................	66
Limit Concurrent Login Sessions...................................................................................................................................	67
Restrictions for Limiting the Number of Concurrent Sessions........................................................................	68
Configuring Concurrent Session Limit....................................................................................................................	68
Enabling the System to Clear Existing Sessions..................................................................................................	68
Enabling Secured CLI Mode............................................................................................................................................	69
Log Messages in the Internal Buffer............................................................................................................................	69
Disabling System Logging...............................................................................................................................................	69
Sending System Messages to a Syslog Server..........................................................................................................	70
Configuring a UNIX System as a Syslog Server...................................................................................................	70
Changing System Logging Settings..............................................................................................................................	70
Display the Logging Buffer and the Logging Configuration.....................................................................................	71
Configuring a UNIX Logging Facility Level..................................................................................................................	72
Synchronizing Log Messages.........................................................................................................................................	72
Enabling Timestamp on Syslog Messages...................................................................................................................	73
File Transfer Services.......................................................................................................................................................	76
Enabling the FTP Server............................................................................................................................................	76
Configuring FTP Server Parameters.......................................................................................................................	76
Configuring FTP Client Parameters.........................................................................................................................	77
Terminal Lines.....................................................................................................................................................................	77
Denying and Permitting Access to a Terminal Line.............................................................................................	77
Configuring Login Authentication for Terminal Lines..........................................................................................	78
Setting Timeout for EXEC Privilege Mode..................................................................................................................	79
Using Telnet to get to Another Network Device.......................................................................................................	80
Lock CONFIGURATION Mode.......................................................................................................................................	80
LPC Bus Quality Degradation..........................................................................................................................................	81
Restoring the Factory Default Settings........................................................................................................................	81
Restoring Factory Default Environment Variables..............................................................................................	82
Viewing the Reason for Last System Reboot.............................................................................................................	83
Chapter 5: 802.1X........................................................................................................................	84
Port-Authentication Process..........................................................................................................................................	85
EAP over RADIUS........................................................................................................................................................	86
Configuring 802.1X............................................................................................................................................................	87
Important Points to Remember......................................................................................................................................	87

4 Contents

Enabling 802.1X..................................................................................................................................................................	88
Configuring Request Identity Re-Transmissions........................................................................................................	89
Configuring a Quiet Period after a Failed Authentication..................................................................................	90
Forcibly Authorizing or Unauthorizing a Port.............................................................................................................	90
Re-Authenticating a Port.................................................................................................................................................	91
Configuring Timeouts.......................................................................................................................................................	92
Configuring Dynamic VLAN Assignment with Port Authentication......................................................................	93
Guest and Authentication-Fail VLANs..........................................................................................................................	94
Configuring a Guest VLAN........................................................................................................................................	94
Configuring an Authentication-Fail VLAN.............................................................................................................	94
Chapter 6: Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)....	96
Optimizing CAM Utilization During the Attachment of ACLs to VLANs.............................................................	96
Guidelines for Configuring ACL VLAN Groups...........................................................................................................	97
Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters..........................................	97
Configuring ACL VLAN Groups................................................................................................................................	97
Configuring FP Blocks for VLAN Parameters.......................................................................................................	98
Viewing CAM Usage.........................................................................................................................................................	99
Allocating FP Blocks for VLAN Processes.................................................................................................................	100
Unified Forwarding Table (UFT) Modes....................................................................................................................	100
Configuring UFT Modes............................................................................................................................................	101
Chapter 7: Access Control Lists (ACLs).....................................................................................	102
IP Access Control Lists (ACLs)....................................................................................................................................	103
CAM Usage.................................................................................................................................................................	103
Implementing ACLs on Dell EMC Networking OS..............................................................................................	104
Important Points to Remember....................................................................................................................................	105
Configuration Task List for Route Maps..............................................................................................................	106
Configuring Match Routes......................................................................................................................................	108
Configuring Set Conditions.....................................................................................................................................	109
Configure a Route Map for Route Redistribution..............................................................................................	109
Configure a Route Map for Route Tagging..........................................................................................................	110
Continue Clause..........................................................................................................................................................	110
IP Fragment Handling.......................................................................................................................................................	111
IP Fragments ACL Examples.....................................................................................................................................	111
Layer 4 ACL Rules Examples....................................................................................................................................	111
Configure a Standard IP ACL........................................................................................................................................	112
Configuring a Standard IP ACL Filter.....................................................................................................................	113
Configure an Extended IP ACL......................................................................................................................................	114
Configuring Filters with a Sequence Number......................................................................................................	114
Configuring Filters Without a Sequence Number...............................................................................................	115
Configure Layer 2 and Layer 3 ACLs...........................................................................................................................	115
Assign an IP ACL to an Interface..................................................................................................................................	116
Applying an IP ACL...........................................................................................................................................................	116
Counting ACL Hits......................................................................................................................................................	117
Configure Ingress ACLs...................................................................................................................................................	117
Configure Egress ACLs...................................................................................................................................................	118
Applying Egress Layer 3 ACLs (Control-Plane)..................................................................................................	118
IP Prefix Lists....................................................................................................................................................................	119

Contents 5

Configuration Task List for Prefix Lists................................................................................................................	119
ACL Remarks....................................................................................................................................................................	122
Configuring a Remark...............................................................................................................................................	123
Deleting a Remark......................................................................................................................................................	123
ACL Resequencing...........................................................................................................................................................	124
Resequencing an ACL or Prefix List......................................................................................................................	124
Route Maps.......................................................................................................................................................................	125
Logging of ACL Processes............................................................................................................................................	126
Guidelines for Configuring ACL Logging..............................................................................................................	126
Configuring ACL Logging.........................................................................................................................................	127
Flow-Based Monitoring..................................................................................................................................................	127
Enabling Flow-Based Monitoring...........................................................................................................................	129
Configuring UDF ACL.....................................................................................................................................................	130
Configuring IP Mirror Access Group...........................................................................................................................	132
Sample Configuration................................................................................................................................................	133
Example of viewing IP mirror–access–group applied to an Interface..........................................................	133
Chapter 8: Bidirectional Forwarding Detection (BFD)................................................................	134
How BFD Works...............................................................................................................................................................	134
BFD Packet Format...................................................................................................................................................	135
BFD Sessions..............................................................................................................................................................	136
BFD Three-Way Handshake....................................................................................................................................	137
Session State Changes.............................................................................................................................................	138
Important Points to Remember....................................................................................................................................	138
Configure BFD..................................................................................................................................................................	138
Configure BFD for Physical Ports..........................................................................................................................	139
Configure BFD for Static Routes...........................................................................................................................	140
Configure BFD for IPv6 Static Routes.................................................................................................................	144
Configure BFD for OSPF..........................................................................................................................................	146
Configure BFD for OSPFv3......................................................................................................................................	151
Configure BFD for IS-IS...........................................................................................................................................	154
Configure BFD for BGP............................................................................................................................................	156
Configure BFD for VRRP.........................................................................................................................................	162
Configuring Protocol Liveness................................................................................................................................	165
Chapter 9: Border Gateway Protocol (BGP)...............................................................................	166
BGP IP version 4 (BGPv4) Overview.........................................................................................................................	166
BGP Autonomous Systems......................................................................................................................................	166
AS4 Number Representation..................................................................................................................................	168
Four-Byte AS Numbers............................................................................................................................................	170
BGP router ID..............................................................................................................................................................	170
Sessions and Peers....................................................................................................................................................	170
Establish a Session....................................................................................................................................................	170
BGP Attributes for selecting Best Path................................................................................................................	171
Multiprotocol BGP.....................................................................................................................................................	176
BGP global and address family configuration......................................................................................................	177
Implement BGP with Dell EMC Networking OS.................................................................................................	178
Configuration Information.........................................................................................................................................	181
Basic BGP configuration tasks.....................................................................................................................................	182

6 Contents

Prerequisite for configuring a BGP network.......................................................................................................	182
Restrictions.................................................................................................................................................................	182
Enabling BGP..............................................................................................................................................................	182
Enabling four-byte autonomous system numbers.............................................................................................	184
Changing a BGP router ID.......................................................................................................................................	185
Configuring AS4 Number Representations..........................................................................................................	185
Configuring a BGP peer............................................................................................................................................	186
Example-Configuring BGP routing between peers............................................................................................	187
BGP peer group..........................................................................................................................................................	188
Advanced BGP configuration tasks.............................................................................................................................	195
Route-refresh and Soft-reconfiguration..............................................................................................................	195
Aggregating Routes...................................................................................................................................................	197
Filtering BGP...............................................................................................................................................................	199
Configuring BGP Fast Fall-Over............................................................................................................................	204
Configuring Passive Peering...................................................................................................................................	206
Enabling Graceful Restart.......................................................................................................................................	207
Redistributing Routes...............................................................................................................................................	208
Redistributing iBGP Routes into IGP....................................................................................................................	208
Enabling Additional Paths.........................................................................................................................................	211
Configuring IP Community Lists..............................................................................................................................	211
Configuring an IP Extended Community List......................................................................................................	212
Configure BGP attributes........................................................................................................................................	213
Enabling Multipath.....................................................................................................................................................	217
Route Reflectors........................................................................................................................................................	217
Enabling Route Flap Dampening.............................................................................................................................	219
Changing BGP keepalive and hold timers............................................................................................................	221
Setting the extended timer.....................................................................................................................................	221
Enabling or disabling BGP neighbors....................................................................................................................	222
Route Map Continue................................................................................................................................................	223
Configuring BGP Confederations..........................................................................................................................	224
Configuring a BGP VRF address family...............................................................................................................	224
Maintaining Existing AS Numbers During an AS Migration.............................................................................	225
Allowing an AS Number to Appear in its Own AS Path...................................................................................	226
Enabling MBGP Configurations..............................................................................................................................	227
MBGP support for IPv6...........................................................................................................................................	227
Configuring IPv6 MBGP between peers..............................................................................................................	227
Example-Configuring IPv4 and IPv6 neighbors..................................................................................................	228
Configure IPv6 NH Automatically for IPv6 Prefix Advertised over IPv4 Neighbor..................................	230
BGP Regular Expression Optimization.................................................................................................................	232
Debugging BGP..........................................................................................................................................................	232
Chapter 10: Content Addressable Memory (CAM)......................................................................	234
CAM Allocation................................................................................................................................................................	234
Test CAM Usage.............................................................................................................................................................	236
View CAM-ACL Settings...............................................................................................................................................	236
View CAM Usage............................................................................................................................................................	238
Configuring CAM Threshold and Silence Period.....................................................................................................	238
CAM Optimization...........................................................................................................................................................	240
Troubleshoot CAM Profiling.........................................................................................................................................	240
QoS CAM Region Limitation...................................................................................................................................	240

Contents 7

Chapter 11: Control Plane Policing (CoPP).................................................................................	241
Configure Control Plane Policing................................................................................................................................	242
Configuring CoPP for Protocols............................................................................................................................	243
Configuring CoPP for CPU Queues......................................................................................................................	244
CoPP for OSPFv3 Packets.....................................................................................................................................	245
Configuring CoPP for OSPFv3..............................................................................................................................	248
Displaying CoPP Configuration .............................................................................................................................	249
Chapter 12: Data Center Bridging (DCB)....................................................................................	251
Ethernet Enhancements in Data Center Bridging....................................................................................................	251
Priority-Based Flow Control...................................................................................................................................	252
Enhanced Transmission Selection.........................................................................................................................	253
Data Center Bridging Exchange Protocol (DCBx)............................................................................................	254
Data Center Bridging in a Traffic Flow................................................................................................................	254
Enabling Data Center Bridging....................................................................................................................................	255
DCB Maps and its Attributes.................................................................................................................................	255
Data Center Bridging: Default Configuration...........................................................................................................	256
Configuring Priority-Based Flow Control..................................................................................................................	256
Configuring Lossless Queues..................................................................................................................................	257
Configuring PFC in a DCB Map...................................................................................................................................	258
Applying a DCB Map on a Port....................................................................................................................................	259
Configuring PFC without a DCB Map........................................................................................................................	260
Priority-Based Flow Control Using Dynamic Buffer Method................................................................................	261
Behavior of Tagged Packets........................................................................................................................................	262
Configuration Example for DSCP and PFC Priorities.............................................................................................	263
Using PFC to Manage Converged Ethernet Traffic...............................................................................................	264
Configure Enhanced Transmission Selection...........................................................................................................	264
ETS Prerequisites and Restrictions......................................................................................................................	264
Creating an ETS Priority Group.............................................................................................................................	265
ETS Operation with DCBx......................................................................................................................................	265
Configuring Bandwidth Allocation for DCBx CIN..............................................................................................	266
Configuring ETS in a DCB Map..............................................................................................................................	267
Hierarchical Scheduling in ETS Output Policies......................................................................................................	268
Using ETS to Manage Converged Ethernet Traffic...............................................................................................	268
Applying DCB Policies in a Switch Stack..................................................................................................................	268
Configure a DCBx Operation........................................................................................................................................	269
DCBx Operation.........................................................................................................................................................	269
DCBx Port Roles........................................................................................................................................................	269
DCB Configuration Exchange..................................................................................................................................	271
Configuration Source Election................................................................................................................................	271
Propagation of DCB Information............................................................................................................................	271
Auto-Detection and Manual Configuration of the DCBx Version..................................................................	272
DCBx Example............................................................................................................................................................	272
DCBx Prerequisites and Restrictions....................................................................................................................	273
Configuring DCBx......................................................................................................................................................	273
Verifying the DCB Configuration.................................................................................................................................	276
QoS dot1p Traffic Classification and Queue Assignment......................................................................................	285
Configuring the Dynamic Buffer Method..................................................................................................................	286

8 Contents

Sample DCB Configuration...........................................................................................................................................	287
Chapter 13: Dynamic Host Configuration Protocol (DHCP)........................................................	289
DHCP Packet Format and Options.............................................................................................................................	289
Assign an IP Address using DHCP...............................................................................................................................	291
Implementation Information..........................................................................................................................................	291
Configure the System to be a DHCP Server............................................................................................................	292
Configuring the Server for Automatic Address Allocation..............................................................................	292
Specifying a Default Gateway................................................................................................................................	293
Configure a Method of Hostname Resolution....................................................................................................	294
Using DNS for Address Resolution.......................................................................................................................	294
Using NetBIOS WINS for Address Resolution....................................................................................................	294
Creating Manual Binding Entries...........................................................................................................................	294
Debugging the DHCP Server.................................................................................................................................	295
Using DHCP Clear Commands...............................................................................................................................	295
Configure the System to be a Relay Agent..............................................................................................................	295
Configure the System to be a DHCP Client.............................................................................................................	297
Configuring the DHCP Client System..................................................................................................................	297
DHCP Client on a Management Interface...........................................................................................................	298
DHCP Client Operation with Other Features.....................................................................................................	299
DHCP Relay When DHCP Server and Client are in Different VRFs...................................................................	300
Configuring Route Leaking between VRFs on DHCP Relay Agent...............................................................	300
Non-default VRF configuration for DHCPv6 helper address................................................................................	301
Configuring DHCP relay source interface..................................................................................................................	301
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................	301
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................	302
Configure the System for User Port Stacking (Option 230)...............................................................................	303
Configure Secure DHCP................................................................................................................................................	303
Option 82 (DHCPv4 relay options).......................................................................................................................	303
DHCPv6 relay agent options..................................................................................................................................	304
DHCP Snooping.........................................................................................................................................................	304
Drop DHCP Packets on Snooped VLANs Only..................................................................................................	309
Dynamic ARP Inspection.........................................................................................................................................	309
Configuring Dynamic ARP Inspection..................................................................................................................	309
Source Address Validation..............................................................................................................................................	311
Enabling IP Source Address Validation..................................................................................................................	311
DHCP MAC Source Address Validation.................................................................................................................	311
Enabling IP+MAC Source Address Validation.....................................................................................................	312
Viewing the Number of SAV Dropped Packets..................................................................................................	312
Clearing the Number of SAV Dropped Packets..................................................................................................	313
Chapter 14: Equal Cost Multi-Path (ECMP)................................................................................	314
ECMP for Flow-Based Affinity.....................................................................................................................................	314
Configuring the Hash Algorithm.............................................................................................................................	314
Enabling Deterministic ECMP Next Hop..............................................................................................................	314
Configuring the Hash Algorithm Seed..................................................................................................................	315
Link Bundle Monitoring...................................................................................................................................................	315
Managing ECMP Group Paths................................................................................................................................	316
Creating an ECMP Group Bundle..........................................................................................................................	316

Contents 9

Modifying the ECMP Group Threshold................................................................................................................	316
RTAG7.................................................................................................................................................................................	317
Flow-based Hashing for ECMP....................................................................................................................................	318
Chapter 15: FIP Snooping...........................................................................................................	321
Fibre Channel over Ethernet.........................................................................................................................................	321
Ensure Robustness in a Converged Ethernet Network..........................................................................................	321
FIP Snooping on Ethernet Bridges..............................................................................................................................	322
FIP Snooping in a Switch Stack...................................................................................................................................	324
Using FIP Snooping.........................................................................................................................................................	324
FIP Snooping Prerequisites.....................................................................................................................................	324
Important Points to Remember.............................................................................................................................	324
Enabling the FCoE Transit Feature.......................................................................................................................	325
Enable FIP Snooping on VLANs.............................................................................................................................	325
Configure the FC-MAP Value................................................................................................................................	326
Configure a Port for a Bridge-to-Bridge Link.....................................................................................................	326
Configure a Port for a Bridge-to-FCF Link.........................................................................................................	326
Impact on Other Software Features....................................................................................................................	326
FIP Snooping Restrictions.......................................................................................................................................	327
Configuring FIP Snooping........................................................................................................................................	327
Displaying FIP Snooping Information..........................................................................................................................	328
FCoE Transit Configuration Example.........................................................................................................................	333
Chapter 16: FIPS Cryptography.................................................................................................	335
Configuration Tasks........................................................................................................................................................	335
Preparing the System....................................................................................................................................................	335
Enabling FIPS Mode.......................................................................................................................................................	336
Generating Host-Keys...................................................................................................................................................	336
Monitoring FIPS Mode Status.....................................................................................................................................	336
Disabling FIPS Mode.......................................................................................................................................................	337
Chapter 17: Force10 Resilient Ring Protocol (FRRP)..................................................................	338
Protocol Overview..........................................................................................................................................................	338
Ring Status.................................................................................................................................................................	339
Multiple FRRP Rings.................................................................................................................................................	339
Important FRRP Points............................................................................................................................................	340
Important FRRP Concepts......................................................................................................................................	341
Implementing FRRP.........................................................................................................................................................	341
FRRP Configuration........................................................................................................................................................	342
Creating the FRRP Group.......................................................................................................................................	342
Configuring the Control VLAN...............................................................................................................................	342
Configuring and Adding the Member VLANs.....................................................................................................	343
Setting the FRRP Timers........................................................................................................................................	344
Clearing the FRRP Counters..................................................................................................................................	344
Viewing the FRRP Configuration...........................................................................................................................	344
Viewing the FRRP Information..............................................................................................................................	345
Troubleshooting FRRP...................................................................................................................................................	345
Sample Configuration and Topology..........................................................................................................................	345
FRRP Support on VLT...................................................................................................................................................	346

10 Contents

Chapter 18: GARP VLAN Registration Protocol (GVRP).............................................................	349
Configure GVRP..............................................................................................................................................................	350
Enabling GVRP Globally.................................................................................................................................................	350
Enabling GVRP on a Layer 2 Interface.......................................................................................................................	351
Configure GVRP Registration.......................................................................................................................................	351
Configure a GARP Timer...............................................................................................................................................	352
RPM Redundancy...........................................................................................................................................................	352
Chapter 19: High Availability (HA).............................................................................................	353
Component Redundancy...............................................................................................................................................	353
Automatic and Manual Stack Unit Failover.........................................................................................................	353
Synchronization between Management and Standby Units...........................................................................	354
Forcing a Stack Unit Failover.................................................................................................................................	354
Specifying an Auto-Failover Limit.........................................................................................................................	354
Disabling Auto-Reboot.............................................................................................................................................	355
Pre-Configuring a Stack Unit Slot..............................................................................................................................	355
Removing a Provisioned Logical Stack Unit.............................................................................................................	355
Hitless Behavior...............................................................................................................................................................	355
Graceful Restart..............................................................................................................................................................	355
Software Resiliency........................................................................................................................................................	356
Software Component Health Monitoring............................................................................................................	356
System Health Monitoring......................................................................................................................................	356
Failure and Event Logging......................................................................................................................................	356
Hot-Lock Behavior..........................................................................................................................................................	357
Chapter 20: Internet Group Management Protocol (IGMP)........................................................	358
IGMP Protocol Overview..............................................................................................................................................	358
IGMP Version 2..........................................................................................................................................................	358
IGMP Version 3..........................................................................................................................................................	360
Configure IGMP...............................................................................................................................................................	362
Viewing IGMP Enabled Interfaces..............................................................................................................................	363
Selecting an IGMP Version...........................................................................................................................................	363
Viewing IGMP Groups....................................................................................................................................................	364
Adjusting Timers..............................................................................................................................................................	364
Adjusting Query and Response Timers................................................................................................................	364
Preventing a Host from Joining a Group..................................................................................................................	365
Enabling IGMP Immediate-Leave................................................................................................................................	367
IGMP Snooping................................................................................................................................................................	368
Configuring IGMP Snooping...................................................................................................................................	368
Removing a Group-Port Association....................................................................................................................	368
Disabling Multicast Flooding...................................................................................................................................	369
Specifying a Port as Connected to a Multicast Router...................................................................................	369
Configuring the Switch as Querier........................................................................................................................	369
Fast Convergence after MSTP Topology Changes................................................................................................	370
Egress Interface Selection (EIS) for HTTP and IGMP Applications...................................................................	370
Designating a Multicast Router Interface..................................................................................................................	377
Chapter 21: Interfaces...............................................................................................................	378

Contents 11

Interface Types................................................................................................................................................................	379
View Basic Interface Information................................................................................................................................	379
Resetting an Interface to its Factory Default State................................................................................................	381
Enabling a Physical Interface........................................................................................................................................	381
Physical Interfaces..........................................................................................................................................................	382
Configuration Task List for Physical Interfaces.................................................................................................	382
Overview of Layer Modes.......................................................................................................................................	382
Configuring Layer 2 (Data Link) Mode................................................................................................................	383
Configuring Layer 2 (Interface) Mode.................................................................................................................	383
Configuring Layer 3 (Network) Mode..................................................................................................................	383
Configuring Layer 3 (Interface) Mode.................................................................................................................	384
Automatic recovery of an Err-disabled interface....................................................................................................	384
Configuring an automatic recovery for an Err-disabled interface.................................................................	385
Egress Interface Selection (EIS).................................................................................................................................	385
Configuring EIS..........................................................................................................................................................	386
Management Interfaces................................................................................................................................................	386
Configuring Management Interfaces....................................................................................................................	386
Configuring a Management Interface on an Ethernet Port............................................................................	387
VLAN Interfaces..............................................................................................................................................................	388
Loopback Interfaces.......................................................................................................................................................	389
Null Interfaces..................................................................................................................................................................	389
Configuring Port Delay..................................................................................................................................................	389
Port Channel Interfaces................................................................................................................................................	390
Port Channel Definition and Standards...............................................................................................................	390
Port Channel Benefits..............................................................................................................................................	390
Port Channel Implementation.................................................................................................................................	390
Interfaces in Port Channels.....................................................................................................................................	391
Configuration Tasks for Port Channel Interfaces..............................................................................................	391
Creating a Port Channel...........................................................................................................................................	391
Adding a Physical Interface to a Port Channel..................................................................................................	392
Reassigning an Interface to a New Port Channel.............................................................................................	393
Configuring the Minimum Oper Up Links in a Port Channel...........................................................................	394
Adding or Removing a Port Channel from a VLAN...........................................................................................	394
Assigning an IP Address to a Port Channel........................................................................................................	395
Deleting or Disabling a Port Channel....................................................................................................................	395
Load Balancing Through Port Channels..............................................................................................................	396
Changing the Hash Algorithm................................................................................................................................	396
Bulk Configuration..........................................................................................................................................................	396
Interface Range.........................................................................................................................................................	396
Bulk Configuration Examples..................................................................................................................................	397
Defining Interface Range Macros...............................................................................................................................	398
Define the Interface Range....................................................................................................................................	399
Choosing an Interface-Range Macro...................................................................................................................	399
Monitoring and Maintaining Interfaces......................................................................................................................	399
Maintenance Using TDR..........................................................................................................................................	400
Non Dell-Qualified Transceivers..................................................................................................................................	400
Splitting 40G Ports without Reload............................................................................................................................	401
Splitting QSFP Ports to SFP+ Ports..........................................................................................................................	402
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port..............................................................................	403
Link Dampening...............................................................................................................................................................	405

12 Contents

Enabling Link Dampening........................................................................................................................................	408
Link Bundle Monitoring..................................................................................................................................................	409
Using Ethernet Pause Frames for Flow Control......................................................................................................	409
Enabling Pause Frames.............................................................................................................................................	410
Configure the MTU Size on an Interface....................................................................................................................	411
Port-Pipes..........................................................................................................................................................................	412
Auto-Negotiation on Ethernet Interfaces..................................................................................................................	412
Setting the Speed of Ethernet Interfaces...........................................................................................................	412
Set Auto-Negotiation Options................................................................................................................................	413
View Advanced Interface Information........................................................................................................................	414
Configuring the Interface Sampling Size..............................................................................................................	415
Configuring the Traffic Sampling Size Globally........................................................................................................	416
Dynamic Counters............................................................................................................................................................	417
Clearing Interface Counters....................................................................................................................................	417
Discard Counters.............................................................................................................................................................	418
Display discard counters..........................................................................................................................................	418
Chapter 22: Internet Protocol Security (IPSec).........................................................................	420
Configuring IPSec ..........................................................................................................................................................	420
Chapter 23: IPv4 Routing..........................................................................................................	422
IP Addresses.....................................................................................................................................................................	423
Configuration Tasks for IP Addresses........................................................................................................................	423
Assigning IP Addresses to an Interface.....................................................................................................................	423
Configuring Static Routes.............................................................................................................................................	424
Adding description for IPv4 and IPv6 static routes..........................................................................................	425
Configure Static Routes for the Management Interface......................................................................................	426
IPv4 Path MTU Discovery Overview..........................................................................................................................	426
Using the Configured Source IP Address in ICMP Messages..............................................................................	427
Configuring the Duration to Establish a TCP Connection.....................................................................................	427
Enabling Directed Broadcast........................................................................................................................................	428
Resolution of Host Names............................................................................................................................................	428
Enabling Dynamic Resolution of Host Names..........................................................................................................	428
Specifying the Local System Domain and a List of Domains................................................................................	429
Configuring DNS with Traceroute..............................................................................................................................	429
ARP.....................................................................................................................................................................................	430
Configuration Tasks for ARP........................................................................................................................................	430
Configuring Static ARP Entries...................................................................................................................................	430
Enabling Proxy ARP.........................................................................................................................................................	431
Clearing ARP Cache........................................................................................................................................................	431
ARP Learning via Gratuitous ARP................................................................................................................................	431
Enabling ARP Learning via Gratuitous ARP...............................................................................................................	431
ARP Learning via ARP Request...................................................................................................................................	432
Configuring ARP Retries...............................................................................................................................................	432
ICMP..................................................................................................................................................................................	433
Configuration Tasks for ICMP.....................................................................................................................................	433
Enabling ICMP Unreachable Messages.....................................................................................................................	433
ICMP Redirects...............................................................................................................................................................	433
UDP Helper.......................................................................................................................................................................	434

Contents 13

Enabling UDP Helper......................................................................................................................................................	435
Configuring a Broadcast Address...............................................................................................................................	435
Configurations Using UDP Helper...............................................................................................................................	436
UDP Helper with Broadcast-All Addresses...............................................................................................................	436
UDP Helper with Subnet Broadcast Addresses.......................................................................................................	437
UDP Helper with Configured Broadcast Addresses...............................................................................................	437
UDP Helper with No Configured Broadcast Addresses.........................................................................................	438
Troubleshooting UDP Helper........................................................................................................................................	438
Chapter 24: IPv6 Routing..........................................................................................................	439
Protocol Overview..........................................................................................................................................................	439
Extended Address Space........................................................................................................................................	439
Stateless Autoconfiguration...................................................................................................................................	439
IPv6 Headers..............................................................................................................................................................	440
IPv6 Header Fields.....................................................................................................................................................	441
Extension Header Fields..........................................................................................................................................	442
Addressing..................................................................................................................................................................	443
Implementing IPv6 with Dell EMC Networking OS.................................................................................................	444
ICMPv6..............................................................................................................................................................................	446
Path MTU discovery.......................................................................................................................................................	446
IPv6 Neighbor Discovery...............................................................................................................................................	446
IPv6 Neighbor Discovery of MTU Packets.........................................................................................................	447
Configuration Task List for IPv6 RDNSS..................................................................................................................	447
Configuring the IPv6 Recursive DNS Server......................................................................................................	447
Debugging IPv6 RDNSS Information Sent to the Host ..................................................................................	448
Displaying IPv6 RDNSS Information.....................................................................................................................	449
Secure Shell (SSH) Over an IPv6 Transport............................................................................................................	449
Configuration Tasks for IPv6.......................................................................................................................................	450
Adjusting Your CAM-Profile...................................................................................................................................	450
Assigning an IPv6 Address to an Interface.........................................................................................................	450
Assigning a Static IPv6 Route................................................................................................................................	451
Configuring Telnet with IPv6..................................................................................................................................	451
SNMP over IPv6........................................................................................................................................................	452
Displaying IPv6 Information....................................................................................................................................	452
Displaying an IPv6 Interface Information............................................................................................................	452
Showing IPv6 Routes...............................................................................................................................................	453
Showing the Running-Configuration for an Interface......................................................................................	454
Clearing IPv6 Routes................................................................................................................................................	455
Disabling ND Entry Timeout...................................................................................................................................	455
Configuring IPv6 RA Guard..........................................................................................................................................	455
Configuring IPv6 RA Guard on an Interface.......................................................................................................	457
Monitoring IPv6 RA Guard......................................................................................................................................	457
Chapter 25: iSCSI Optimization.................................................................................................	458
iSCSI Optimization Overview.......................................................................................................................................	458
Monitoring iSCSI Traffic Flows..............................................................................................................................	459
Application of Quality of Service to iSCSI Traffic Flows.................................................................................	460
Information Monitored in iSCSI Traffic Flows....................................................................................................	460
Detection and Auto-Configuration for Dell EqualLogic Arrays.......................................................................	461

14 Contents

Configuring Detection and Ports for Dell Compellent Arrays.........................................................................	461
Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer...........................................................	461
Enable and Disable iSCSI Optimization................................................................................................................	462
Default iSCSI Optimization Values..............................................................................................................................	462
iSCSI Optimization Prerequisites................................................................................................................................	463
Configuring iSCSI Optimization...................................................................................................................................	463
Displaying iSCSI Optimization Information...............................................................................................................	465
Chapter 26: Intermediate System to Intermediate System.........................................................	467
IS-IS Protocol Overview................................................................................................................................................	467
IS-IS Addressing..............................................................................................................................................................	467
Multi-Topology IS-IS......................................................................................................................................................	468
Transition Mode.........................................................................................................................................................	468
Interface Support......................................................................................................................................................	468
Adjacencies.................................................................................................................................................................	468
Graceful Restart..............................................................................................................................................................	469
Timers..........................................................................................................................................................................	469
Implementation Information.........................................................................................................................................	469
Configuration Information.............................................................................................................................................	470
Configuration Tasks for IS-IS.................................................................................................................................	470
Configuring the Distance of a Route....................................................................................................................	477
Changing the IS-Type...............................................................................................................................................	477
Redistributing IPv4 Routes.....................................................................................................................................	480
Redistributing IPv6 Routes.....................................................................................................................................	480
Configuring Authentication Passwords................................................................................................................	481
Setting the Overload Bit..........................................................................................................................................	481
Debugging IS-IS.........................................................................................................................................................	482
IS-IS Metric Styles..........................................................................................................................................................	483
Configure Metric Values................................................................................................................................................	483
Maximum Values in the Routing Table.................................................................................................................	483
Change the IS-IS Metric Style in One Level Only.............................................................................................	483
Leaks from One Level to Another.........................................................................................................................	485
Sample Configurations...................................................................................................................................................	485
Chapter 27: Link Aggregation Control Protocol (LACP).............................................................	488
Introduction to Dynamic LAGs and LACP.................................................................................................................	488
Important Points to Remember.............................................................................................................................	488
LACP Modes...............................................................................................................................................................	489
Configuring LACP Commands................................................................................................................................	489
LACP Configuration Tasks............................................................................................................................................	489
Creating a LAG..........................................................................................................................................................	490
Configuring the LAG Interfaces as Dynamic......................................................................................................	490
Setting the LACP Long Timeout............................................................................................................................	491
Monitoring and Debugging LACP...........................................................................................................................	491
Shared LAG State Tracking...........................................................................................................................................	491
Configuring Shared LAG State Tracking.............................................................................................................	492
Important Points about Shared LAG State Tracking........................................................................................	493
LACP Basic Configuration Example............................................................................................................................	494
Configure a LAG on ALPHA....................................................................................................................................	494

Contents 15

Chapter 28: Layer 2...................................................................................................................	502
Manage the MAC Address Table................................................................................................................................	502
Clearing the MAC Address Table..........................................................................................................................	502
Setting the Aging Time for Dynamic Entries......................................................................................................	502
Configuring a Static MAC Address.......................................................................................................................	503
Displaying the MAC Address Table.......................................................................................................................	503
MAC Learning Limit........................................................................................................................................................	503
Setting the MAC Learning Limit............................................................................................................................	504
mac learning-limit Dynamic.....................................................................................................................................	504
mac learning-limit mac-address-sticky................................................................................................................	504
mac learning-limit station-move............................................................................................................................	504
mac learning-limit no-station-move.....................................................................................................................	505
Learning Limit Violation Actions............................................................................................................................	505
Setting Station Move Violation Actions..............................................................................................................	505
Recovering from Learning Limit and Station Move Violations.......................................................................	506
Enabling port security..............................................................................................................................................	506
NIC Teaming....................................................................................................................................................................	506
Configure Redundant Pairs...........................................................................................................................................	507
Far-End Failure Detection.............................................................................................................................................	510
FEFD State Changes.................................................................................................................................................	511
Configuring FEFD.......................................................................................................................................................	511
Enabling FEFD on an Interface...............................................................................................................................	512
Debugging FEFD........................................................................................................................................................	513
Chapter 29: Link Layer Discovery Protocol (LLDP).....................................................................	515
802.1AB (LLDP) Overview............................................................................................................................................	515
Protocol Data Units...................................................................................................................................................	515
Optional TLVs...................................................................................................................................................................	517
Management TLVs.....................................................................................................................................................	517
TIA-1057 (LLDP-MED) Overview................................................................................................................................	518
TIA Organizationally Specific TLVs........................................................................................................................	519
Configure LLDP...............................................................................................................................................................	522
CONFIGURATION versus INTERFACE Configurations.........................................................................................	523
Enabling LLDP..................................................................................................................................................................	523
Disabling and Undoing LLDP..................................................................................................................................	523
Enabling LLDP on Management Ports.......................................................................................................................	524
Disabling and Undoing LLDP on Management Ports........................................................................................	524
Advertising TLVs.............................................................................................................................................................	524
Storing and Viewing Unrecognized LLDP TLVs......................................................................................................	525
Viewing the LLDP Configuration.................................................................................................................................	526
Viewing Information Advertised by Adjacent LLDP Neighbors............................................................................	527
Examples of Viewing Information Advertised by Neighbors...........................................................................	527
Configuring LLDPDU Intervals.....................................................................................................................................	529
Configuring LLDP Notification Interval......................................................................................................................	530
Configuring LLDP Notification Interval......................................................................................................................	530
Configuring Transmit and Receive Mode..................................................................................................................	530
Configuring the Time to Live Value.............................................................................................................................	531
Debugging LLDP..............................................................................................................................................................	532

16 Contents

Relevant Management Objects...................................................................................................................................	533
Chapter 30: Microsoft Network Load Balancing.........................................................................	538
Configuring a Switch for NLB ....................................................................................................................................	539
Enabling a Switch for Multicast NLB...................................................................................................................	540
Chapter 31: Multicast Source Discovery Protocol (MSDP).........................................................	541
Anycast RP.......................................................................................................................................................................	542
Implementation Information.........................................................................................................................................	543
Configure Multicast Source Discovery Protocol.....................................................................................................	543
Related Configuration Tasks..................................................................................................................................	543
Enable MSDP...................................................................................................................................................................	547
Manage the Source-Active Cache..............................................................................................................................	548
Viewing the Source-Active Cache........................................................................................................................	548
Limiting the Source-Active Cache........................................................................................................................	548
Clearing the Source-Active Cache.......................................................................................................................	549
Enabling the Rejected Source-Active Cache.....................................................................................................	549
Accept Source-Active Messages that Fail the RFP Check..................................................................................	549
Specifying Source-Active Messages..........................................................................................................................	552
Limiting the Source-Active Messages from a Peer................................................................................................	553
Preventing MSDP from Caching a Local Source....................................................................................................	553
Preventing MSDP from Caching a Remote Source...............................................................................................	554
Preventing MSDP from Advertising a Local Source..............................................................................................	554
Logging Changes in Peership States.........................................................................................................................	555
Terminating a Peership..................................................................................................................................................	555
Clearing Peer Statistics.................................................................................................................................................	555
Debugging MSDP............................................................................................................................................................	556
MSDP with Anycast RP................................................................................................................................................	556
Configuring Anycast RP................................................................................................................................................	557
Reducing Source-Active Message Flooding.......................................................................................................	558
Specifying the RP Address Used in SA Messages............................................................................................	558
MSDP Sample Configurations.....................................................................................................................................	560
Chapter 32: Multicast Listener Discovery Protocol....................................................................	563
MLD timers.......................................................................................................................................................................	566
Reducing Host Response Burstiness...................................................................................................................	566
Configuring MLD Version..............................................................................................................................................	567
Clearing MLD groups......................................................................................................................................................	567
Debugging MLD...............................................................................................................................................................	567
Explicit Tracking..............................................................................................................................................................	567
Reducing Leave Latency...............................................................................................................................................	567
Displaying MLD groups table........................................................................................................................................	568
Displaying MLD Interfaces............................................................................................................................................	568
Chapter 33: Multiple Spanning Tree Protocol (MSTP)...............................................................	569
Spanning Tree Variations..............................................................................................................................................	570
Implementation Information....................................................................................................................................	570
Configure Multiple Spanning Tree Protocol.............................................................................................................	570
Related Configuration Tasks..................................................................................................................................	570

Contents 17

Enable Multiple Spanning Tree Globally.....................................................................................................................	571
Adding and Removing Interfaces.................................................................................................................................	571
Creating Multiple Spanning Tree Instances...............................................................................................................	571
Influencing MSTP Root Selection...............................................................................................................................	572
Interoperate with Non-Dell Bridges............................................................................................................................	573
Changing the Region Name or Revision....................................................................................................................	573
Modifying Global Parameters.......................................................................................................................................	573
Modifying the Interface Parameters..........................................................................................................................	574
Setting STP path cost as constant............................................................................................................................	575
Configuring an EdgePort...............................................................................................................................................	576
Flush MAC Addresses after a Topology Change.....................................................................................................	576
MSTP Sample Configurations......................................................................................................................................	577
Debugging and Verifying MSTP Configurations......................................................................................................	580
Chapter 34: Multicast Features.................................................................................................	582
Enabling IP Multicast......................................................................................................................................................	582
Implementation Information.........................................................................................................................................	582
Multicast Policies............................................................................................................................................................	583
IPv4 Multicast Policies.............................................................................................................................................	583
Understanding Multicast Traceroute (mtrace).......................................................................................................	589
Printing Multicast Traceroute (mtrace) Paths........................................................................................................	590
Supported Error Codes..................................................................................................................................................	591
mtrace Scenarios............................................................................................................................................................	592
Chapter 35: Multicast Listener Discovery Protocol....................................................................	598
MLD timers........................................................................................................................................................................	601
Reducing Host Response Burstiness....................................................................................................................	601
Clearing MLD groups.....................................................................................................................................................	602
Debugging MLD...............................................................................................................................................................	602
Explicit Tracking..............................................................................................................................................................	602
Reducing Leave Latency...............................................................................................................................................	602
Displaying MLD groups table........................................................................................................................................	602
Displaying MLD Interfaces............................................................................................................................................	603
MLD Snooping.................................................................................................................................................................	603
Enable MLD Snooping..............................................................................................................................................	603
Disable MLD Snooping.............................................................................................................................................	603
Configure the switch as a querier.........................................................................................................................	604
Specify port as connected to multicast router..................................................................................................	604
Enable Snooping Explicit Tracking........................................................................................................................	604
Display the MLD Snooping Table..........................................................................................................................	604
Chapter 36: Object Tracking.....................................................................................................	605
Object Tracking Overview............................................................................................................................................	605
Track Layer 2 Interfaces.........................................................................................................................................	606
Track Layer 3 Interfaces.........................................................................................................................................	606
Track IPv4 and IPv6 Routes...................................................................................................................................	607
Set Tracking Delays..................................................................................................................................................	608
VRRP Object Tracking.............................................................................................................................................	608
Object Tracking Configuration....................................................................................................................................	608

18 Contents

Tracking a Layer 2 Interface..................................................................................................................................	608
Tracking a Layer 3 Interface..................................................................................................................................	609
Track an IPv4/IPv6 Route.......................................................................................................................................	610
Displaying Tracked Objects...........................................................................................................................................	613
Chapter 37: Open Shortest Path First (OSPFv2 and OSPFv3)....................................................	616
Protocol Overview...........................................................................................................................................................	616
Autonomous System (AS) Areas...........................................................................................................................	616
Area Types...................................................................................................................................................................	617
Networks and Neighbors.........................................................................................................................................	618
Router Types...............................................................................................................................................................	618
Designated and Backup Designated Routers......................................................................................................	619
Link-State Advertisements (LSAs)........................................................................................................................	619
Router Priority and Cost.........................................................................................................................................	620
OSPF with Dell EMC Networking OS.........................................................................................................................	621
Graceful Restart.........................................................................................................................................................	621
Fast Convergence (OSPFv2, IPv4 Only)............................................................................................................	622
Multi-Process OSPFv2 with VRF..........................................................................................................................	623
OSPF ACK Packing...................................................................................................................................................	623
Setting OSPF Adjacency with Cisco Routers....................................................................................................	623
Configuration Information.............................................................................................................................................	624
Configuration Task List for OSPFv2 (OSPF for IPv4).....................................................................................	624
OSPFv3 NSSA...........................................................................................................................................................	636
Configuration Task List for OSPFv3 (OSPF for IPv6).....................................................................................	637
MIB Support for OSPFv3..............................................................................................................................................	649
Viewing the OSPFv3 MIB........................................................................................................................................	649
Configuration Task List for OSPFv3 (OSPF for IPv6)..........................................................................................	650
Enabling IPv6 Unicast Routing..............................................................................................................................	650
Applying cost for OSPFv3......................................................................................................................................	650
Assigning IPv6 Addresses on an Interface..........................................................................................................	651
Assigning Area ID on an Interface..........................................................................................................................	651
Assigning OSPFv3 Process ID and Router ID Globally.....................................................................................	651
Assigning OSPFv3 Process ID and Router ID to a VRF...................................................................................	652
Configuring Stub Areas...........................................................................................................................................	652
Configuring Passive-Interface...............................................................................................................................	652
Redistributing Routes...............................................................................................................................................	653
Configuring a Default Route...................................................................................................................................	653
Enabling OSPFv3 Graceful Restart......................................................................................................................	653
OSPFv3 Authentication Using IPsec....................................................................................................................	655
Troubleshooting OSPFv3.........................................................................................................................................	661
Chapter 38: Policy-based Routing (PBR)...................................................................................	663
Overview...........................................................................................................................................................................	663
Implementing PBR..........................................................................................................................................................	664
Configuration Task List for Policy-based Routing..................................................................................................	664
Create a Redirect List..............................................................................................................................................	665
Create a Rule for a Redirect-list...........................................................................................................................	665
Apply a Redirect-list to an Interface using a Redirect-group.........................................................................	667
Sample Configuration.....................................................................................................................................................	669

Contents 19

Chapter 39: PIM Sparse-Mode (PIM-SM)..................................................................................	673
Implementation Information..........................................................................................................................................	673
Protocol Overview..........................................................................................................................................................	673
Requesting Multicast Traffic..................................................................................................................................	673
Refuse Multicast Traffic..........................................................................................................................................	674
Send Multicast Traffic.............................................................................................................................................	674
Configuring PIM-SM.......................................................................................................................................................	674
Related Configuration Tasks..................................................................................................................................	675
Enable PIM-SM................................................................................................................................................................	675
Configuring S,G Expiry Timers.....................................................................................................................................	677
Configuring a Static Rendezvous Point.....................................................................................................................	677
Overriding Bootstrap Router Updates.................................................................................................................	678
Configuring a Designated Router................................................................................................................................	678
Creating Multicast Boundaries and Domains...........................................................................................................	680
Electing an RP using the BSR Mechanism...............................................................................................................	680
Chapter 40: PIM Source-Specific Mode (PIM-SSM)..................................................................	682
Implementation Information.........................................................................................................................................	682
Configure PIM-SSM.......................................................................................................................................................	682
Enabling PIM-SSM..........................................................................................................................................................	683
Use PIM-SSM with IGMP Version 2 Hosts..............................................................................................................	683
Electing an RP using the BSR Mechanism...............................................................................................................	685
Enabling RP to Server Specific Multicast Groups.............................................................................................	686
Chapter 41: Port Monitoring......................................................................................................	688
Important Points to Remember...................................................................................................................................	688
Port Monitoring...............................................................................................................................................................	689
Configuring Port Monitoring.........................................................................................................................................	691
Configuring Monitor Multicast Queue.......................................................................................................................	692
Enabling Flow-Based Monitoring................................................................................................................................	693
Remote Port Mirroring..................................................................................................................................................	694
Remote Port Mirroring Example............................................................................................................................	694
Configuring Remote Port Mirroring......................................................................................................................	695
Displaying Remote-Port Mirroring Configurations............................................................................................	696
Configuration procedure for Remote Port Mirroring........................................................................................	697
Encapsulated Remote Port Monitoring......................................................................................................................	701
ERPM Behavior on a typical Dell EMC Networking OS ........................................................................................	703
Port Monitoring on VLT.................................................................................................................................................	704
Chapter 42: Private VLANs (PVLAN)..........................................................................................	707
Private VLAN Concepts.................................................................................................................................................	707
Using the Private VLAN Commands...........................................................................................................................	708
Configuration Task List..................................................................................................................................................	709
Creating PVLAN ports.............................................................................................................................................	709
Creating a Primary VLAN........................................................................................................................................	709
Creating a Community VLAN..................................................................................................................................	710
Creating an Isolated VLAN.......................................................................................................................................	711
Private VLAN Configuration Example.........................................................................................................................	712

20 Contents

Inspecting the Private VLAN Configuration..............................................................................................................	713
Chapter 43: Per-VLAN Spanning Tree Plus (PVST+)..................................................................	715
Protocol Overview...........................................................................................................................................................	715
Implementation Information..........................................................................................................................................	716
Configure Per-VLAN Spanning Tree Plus..................................................................................................................	717
Enabling PVST+................................................................................................................................................................	717
Disabling PVST+...............................................................................................................................................................	717
Influencing PVST+ Root Selection..............................................................................................................................	718
Modifying Global PVST+ Parameters.........................................................................................................................	719
Modifying Interface PVST+ Parameters....................................................................................................................	719
Configuring an EdgePort...............................................................................................................................................	720
PVST+ in Multi-Vendor Networks...............................................................................................................................	721
Enabling PVST+ Extend System ID.............................................................................................................................	721
PVST+ Sample Configurations.....................................................................................................................................	722
Chapter 44: Quality of Service (QoS).........................................................................................	724
Implementation Information..........................................................................................................................................	726
Port-Based QoS Configurations..................................................................................................................................	726
Setting dot1p Priorities for Incoming Traffic......................................................................................................	726
Honoring dot1p Priorities on Ingress Traffic.......................................................................................................	727
Configuring Port-Based Rate Policing..................................................................................................................	727
Configuring Port-Based Rate Shaping.................................................................................................................	728
Policy-Based QoS Configurations...............................................................................................................................	729
Classify Traffic...........................................................................................................................................................	729
Create a QoS Policy..................................................................................................................................................	732
Create Policy Maps...................................................................................................................................................	734
DSCP Color Maps............................................................................................................................................................	737
Creating a DSCP Color Map...................................................................................................................................	737
Displaying DSCP Color Maps..................................................................................................................................	738
Displaying a DSCP Color Policy Configuration ..................................................................................................	739
Enabling QoS Rate Adjustment....................................................................................................................................	739
Enabling Strict-Priority Queueing...............................................................................................................................	740
Weighted Random Early Detection.............................................................................................................................	740
Creating WRED Profiles...........................................................................................................................................	741
Applying a WRED Profile to Traffic.......................................................................................................................	741
Displaying Default and Configured WRED Profiles............................................................................................	742
Displaying WRED Drop Statistics..........................................................................................................................	742
Displaying egress–queue Statistics.......................................................................................................................	742
Pre-Calculating Available QoS CAM Space..............................................................................................................	742
Configuring Weights and ECN for WRED ................................................................................................................	743
Configuring WRED and ECN Attributes....................................................................................................................	745
Guidelines for Configuring ECN for Classifying and Color-Marking Packets...................................................	746
Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class..........................	746
Classifying Incoming Packets Using ECN and Color-Marking........................................................................	747
Sample configuration to mark non-ecn packets as “yellow” with single traffic class..............................	748
Applying Layer 2 Match Criteria on a Layer 3 Interface........................................................................................	749
Applying DSCP and VLAN Match Criteria on a Service Queue...........................................................................	750
Classifying Incoming Packets Using ECN and Color-Marking..............................................................................	750

Contents 21

Guidelines for Configuring ECN for Classifying and Color-Marking Packets...................................................	752
Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class................................	753
Sample configuration to mark non-ecn packets as “yellow” with single traffic class....................................	753
Enabling Buffer Statistics Tracking ...........................................................................................................................	754
Chapter 45: Routing Information Protocol (RIP)........................................................................	757
Protocol Overview..........................................................................................................................................................	757
RIPv1.............................................................................................................................................................................	757
RIPv2............................................................................................................................................................................	757
Implementation Information..........................................................................................................................................	757
Configuration Information.............................................................................................................................................	758
Configuration Task List............................................................................................................................................	758
RIP Configuration Example.....................................................................................................................................	764
Chapter 46: Remote Monitoring (RMON)..................................................................................	769
Implementation Information..........................................................................................................................................	769
Fault Recovery.................................................................................................................................................................	769
Setting the RMON Alarm........................................................................................................................................	769
Configuring an RMON Event..................................................................................................................................	770
Configuring RMON Collection Statistics..............................................................................................................	771
Configuring the RMON Collection History...........................................................................................................	771
Chapter 47: Rapid Spanning Tree Protocol (RSTP)....................................................................	773
Protocol Overview..........................................................................................................................................................	773
Configuring Rapid Spanning Tree................................................................................................................................	773
Important Points to Remember...................................................................................................................................	774
RSTP and VLT............................................................................................................................................................	774
Configuring Interfaces for Layer 2 Mode..................................................................................................................	774
Enabling Rapid Spanning Tree Protocol Globally.....................................................................................................	775
Adding and Removing Interfaces.................................................................................................................................	777
Modifying Global Parameters.......................................................................................................................................	777
Enabling SNMP Traps for Root Elections and Topology Changes................................................................	778
Modifying Interface Parameters..................................................................................................................................	778
Enabling SNMP Traps for Root Elections and Topology Changes......................................................................	778
Influencing RSTP Root Selection................................................................................................................................	779
Configuring an EdgePort...............................................................................................................................................	779
Configuring Fast Hellos for Link State Detection...................................................................................................	780
Chapter 48: Software-Defined Networking (SDN)......................................................................	781
Chapter 49: Security.................................................................................................................	782
AAA Accounting...............................................................................................................................................................	782
Configuration Task List for AAA Accounting......................................................................................................	782
RADIUS Accounting..................................................................................................................................................	784
AAA Authentication........................................................................................................................................................	789
Configuration Task List for AAA Authentication................................................................................................	789
Obscuring Passwords and Keys...................................................................................................................................	792
AAA Authorization...........................................................................................................................................................	792
Privilege Levels Overview.......................................................................................................................................	793

22 Contents

Configuration Task List for Privilege Levels.......................................................................................................	793
RADIUS..............................................................................................................................................................................	797
RADIUS Authentication............................................................................................................................................	797
Configuration Task List for RADIUS.....................................................................................................................	798
Support for Change of Authorization and Disconnect Messages packets..................................................	801
TACACS+...........................................................................................................................................................................	811
Configuration Task List for TACACS+...................................................................................................................	811
TACACS+ Remote Authentication.........................................................................................................................	813
Command Authorization...........................................................................................................................................	814
Protection from TCP Tiny and Overlapping Fragment Attacks...........................................................................	814
Enabling SCP and SSH...................................................................................................................................................	814
Using SCP with SSH to Copy a Software Image...............................................................................................	815
Removing the RSA Host Keys and Zeroizing Storage .....................................................................................	816
Configuring When to Re-generate an SSH Key ................................................................................................	816
Configuring the SSH Server Key Exchange Algorithm.....................................................................................	816
Configuring the HMAC Algorithm for the SSH Server.....................................................................................	817
Configuring the SSH Server Cipher List...............................................................................................................	817
Configuring DNS in the SSH Server......................................................................................................................	818
Secure Shell Authentication....................................................................................................................................	818
Troubleshooting SSH...............................................................................................................................................	820
Telnet..................................................................................................................................................................................	821
VTY Line and Access-Class Configuration................................................................................................................	821
VTY Line Local Authentication and Authorization.............................................................................................	821
VTY Line Remote Authentication and Authorization........................................................................................	822
VTY MAC-SA Filter Support...................................................................................................................................	822
Role-Based Access Control..........................................................................................................................................	823
Overview of RBAC....................................................................................................................................................	823
User Roles...................................................................................................................................................................	825
AAA Authentication and Authorization for Roles..............................................................................................	828
Role Accounting.........................................................................................................................................................	831
Display Information About User Roles..................................................................................................................	832
Two Factor Authentication (2FA)...............................................................................................................................	833
Handling Access-Challenge Message...................................................................................................................	833
Configuring Challenge Response Authentication for SSHv2..........................................................................	833
SMS-OTP Mechanism..............................................................................................................................................	834
Configuring the System to Drop Certain ICMP Reply Messages........................................................................	834
Dell EMC Networking OS Security Hardening.........................................................................................................	835
Dell EMC Networking OS Image Verification.....................................................................................................	836
Startup Configuration Verification........................................................................................................................	837
Configuring the root User Password....................................................................................................................	838
Locking Access to GRUB Interface......................................................................................................................	838
Enabling User Lockout for Failed Login Attempts............................................................................................	839
Chapter 50: Service Provider Bridging......................................................................................	840
VLAN Stacking.................................................................................................................................................................	840
Configure VLAN Stacking........................................................................................................................................	841
Creating Access and Trunk Ports.........................................................................................................................	842
Enable VLAN-Stacking for a VLAN.......................................................................................................................	842
Configuring the Protocol Type Value for the Outer VLAN Tag.....................................................................	843
Configuring Dell EMC Networking OS Options for Trunk Ports....................................................................	843

Contents 23

Debugging VLAN Stacking......................................................................................................................................	844
VLAN Stacking in Multi-Vendor Networks.........................................................................................................	844
VLAN Stacking Packet Drop Precedence.................................................................................................................	848
Enabling Drop Eligibility............................................................................................................................................	848
Honoring the Incoming DEI Value..........................................................................................................................	848
Marking Egress Packets with a DEI Value..........................................................................................................	849
Dynamic Mode CoS for VLAN Stacking....................................................................................................................	849
Mapping C-Tag to S-Tag dot1p Values................................................................................................................	851
Layer 2 Protocol Tunneling...........................................................................................................................................	851
Enabling Layer 2 Protocol Tunneling....................................................................................................................	853
Specifying a Destination MAC Address for BPDUs..........................................................................................	854
Setting Rate-Limit BPDUs......................................................................................................................................	854
Debugging Layer 2 Protocol Tunneling................................................................................................................	854
Provider Backbone Bridging.........................................................................................................................................	855
Chapter 51: sFlow......................................................................................................................	856
Overview...........................................................................................................................................................................	856
Implementation Information.........................................................................................................................................	856
Enabling Extended sFlow..............................................................................................................................................	857
Enabling and Disabling sFlow on an Interface..........................................................................................................	858
Enabling and Disabling sFlow for Egress Traffic...............................................................................................	858
Enabling sFlow Max-Header Size Extended.............................................................................................................	858
sFlow Show Commands................................................................................................................................................	859
Displaying Show sFlow Global................................................................................................................................	859
Displaying Show sFlow on an Interface...............................................................................................................	860
Displaying Show sFlow on a Stack-unit...............................................................................................................	860
Configuring Specify Collectors.....................................................................................................................................	861
Changing the Polling Intervals......................................................................................................................................	861
Back-Off Mechanism......................................................................................................................................................	861
sFlow on LAG ports.........................................................................................................................................................	861
Enabling Extended sFlow...............................................................................................................................................	861
Important Points to Remember.............................................................................................................................	862
Chapter 52: Simple Network Management Protocol (SNMP).....................................................	864
Protocol Overview..........................................................................................................................................................	865
Implementation Information.........................................................................................................................................	865
SNMPv3 Compliance With FIPS.................................................................................................................................	865
Configuration Task List for SNMP.............................................................................................................................	866
Important Points to Remember...................................................................................................................................	866
Set up SNMP...................................................................................................................................................................	866
Creating a Community.............................................................................................................................................	867
Setting Up User-Based Security (SNMPv3)......................................................................................................	867
Enable SNMPv3 traps..............................................................................................................................................	868
Reading Managed Object Values................................................................................................................................	868
Writing Managed Object Values..................................................................................................................................	869
Configuring Contact and Location Information using SNMP...............................................................................	869
Subscribing to Managed Object Value Updates using SNMP..............................................................................	870
Enabling a Subset of SNMP Traps..............................................................................................................................	871
Enabling an SNMP Agent to Notify Syslog Server Failure....................................................................................	872

24 Contents

Copy Configuration Files Using SNMP......................................................................................................................	873
Copying a Configuration File..................................................................................................................................	875
Copying Configuration Files via SNMP................................................................................................................	876
Copying the Startup-Config Files to the Running-Config...............................................................................	876
Copying the Startup-Config Files to the Server via FTP................................................................................	876
Copying the Startup-Config Files to the Server via TFTP..............................................................................	877
Copy a Binary File to the Startup-Configuration...............................................................................................	877
Additional MIB Objects to View Copy Statistics................................................................................................	877
Obtaining a Value for MIB Objects........................................................................................................................	878
MIB Support to Display Reason for Last System Reboot.....................................................................................	879
Viewing the Reason for Last System Reboot Using SNMP............................................................................	879
MIB Support for Power Monitoring............................................................................................................................	879
MIB Support to Display the Available Memory Size on Flash..............................................................................	880
Viewing the Available Flash Memory Size...........................................................................................................	880
MIB Support to Display the Software Core Files Generated by the System...................................................	880
Viewing the Software Core Files Generated by the System...........................................................................	881
MIB Support to Display the Available Partitions on Flash......................................................................................	881
Viewing the Available Partitions on Flash............................................................................................................	882
MIB Support to Display Egress Queue Statistics....................................................................................................	883
MIB Support to ECMP Group Count..........................................................................................................................	883
Viewing the ECMP Group Count Information....................................................................................................	883
MIB Support for entAliasMappingTable ...................................................................................................................	886
Viewing the entAliasMappingTable MIB..............................................................................................................	886
MIB Support for LAG.....................................................................................................................................................	887
Viewing the LAG MIB...............................................................................................................................................	888
MIB Support to Display Unrecognized LLDP TLVs.................................................................................................	889
MIB Support to Display Reserved Unrecognized LLDP TLVs........................................................................	889
MIB Support to Display Organizational Specific Unrecognized LLDP TLVs...............................................	890
MIB Support for LLDP Notification Interval..............................................................................................................	891
MIB support for Port Security......................................................................................................................................	891
Global MIB objects for port security.....................................................................................................................	891
MIB support for interface level port security.....................................................................................................	891
MIB objects for configuring MAC addresses......................................................................................................	893
MIB objects for configuring MAC addresses......................................................................................................	893
Manage VLANs using SNMP........................................................................................................................................	894
Creating a VLAN........................................................................................................................................................	894
Assigning a VLAN Alias............................................................................................................................................	894
Displaying the Ports in a VLAN..............................................................................................................................	895
Add Tagged and Untagged Ports to a VLAN.....................................................................................................	896
Managing Overload on Startup....................................................................................................................................	897
Enabling and Disabling a Port using SNMP...............................................................................................................	897
Fetch Dynamic MAC Entries using SNMP................................................................................................................	897
Example of Deriving the Interface Index Number...................................................................................................	899
MIB Objects for Viewing the System Image on Flash Partitions...................................................................	899
Monitoring BGP sessions via SNMP..........................................................................................................................	899
Monitor Port-Channels...................................................................................................................................................	901
Enabling an SNMP Agent to Notify Syslog Server Failure...................................................................................	902
Troubleshooting SNMP Operation..............................................................................................................................	903
Transceiver Monitoring.................................................................................................................................................	903
Configuring SNMP context name...............................................................................................................................	904

Contents 25

Chapter 53: Stacking................................................................................................................	906
Stacking Overview.........................................................................................................................................................	906
Stack Management Roles.......................................................................................................................................	906
Stack Master Election..............................................................................................................................................	907
Virtual IP......................................................................................................................................................................	909
Failover Roles.............................................................................................................................................................	909
MAC Addressing on Stacks....................................................................................................................................	909
Stacking LAG..............................................................................................................................................................	910
Supported Stacking Topologies.............................................................................................................................	910
High Availability on Stacks.......................................................................................................................................	911
Management Access on Stacks..............................................................................................................................	911
Mixed-mode Stacking...............................................................................................................................................	912
Important Points to Remember....................................................................................................................................	913
Stacking Installation Tasks............................................................................................................................................	913
Create a Stack............................................................................................................................................................	914
Add Units to an Existing Stack...............................................................................................................................	917
Split a Stack...............................................................................................................................................................	920
Stacking Configuration Tasks......................................................................................................................................	920
Assigning Unit Numbers to Units in an Stack....................................................................................................	920
Creating a Virtual Stack Unit on a Stack.............................................................................................................	920
Displaying Information about a Stack...................................................................................................................	921
Influencing Management Unit Selection on a Stack.........................................................................................	923
Managing Redundancy on a Stack........................................................................................................................	924
Resetting a Unit on a Stack....................................................................................................................................	924
Enabling Mixed-mode Stacking.............................................................................................................................	924
Verify a Stack Configuration........................................................................................................................................	925
Displaying the Status of Stacking Ports..............................................................................................................	925
Remove Units or Front End Ports from a Stack.....................................................................................................	926
Removing a Unit from a Stack...............................................................................................................................	926
Removing Front End Port Stacking......................................................................................................................	927
Troubleshoot a Stack.....................................................................................................................................................	927
Recover from Stack Link Flaps..............................................................................................................................	927
Recover from a Card Problem State on a Stack...............................................................................................	928
Chapter 54: Storm Control........................................................................................................	930
Configure Storm Control...............................................................................................................................................	930
Configuring Storm Control from INTERFACE Mode........................................................................................	930
Configuring Storm Control from CONFIGURATION Mode.............................................................................	931
Chapter 55: Spanning Tree Protocol (STP)...............................................................................	932
Protocol Overview..........................................................................................................................................................	932
Configure Spanning Tree..............................................................................................................................................	932
Important Points to Remember...................................................................................................................................	933
Configuring Interfaces for Layer 2 Mode..................................................................................................................	934
Enabling Spanning Tree Protocol Globally................................................................................................................	935
Adding an Interface to the Spanning Tree Group...................................................................................................	936
Modifying Global Parameters.......................................................................................................................................	937
Modifying Interface STP Parameters.........................................................................................................................	938

26 Contents

Enabling PortFast............................................................................................................................................................	938
Prevent Network Disruptions with BPDU Guard..............................................................................................	939
Selecting STP Root.........................................................................................................................................................	941
STP Root Guard...............................................................................................................................................................	941
Root Guard Scenario.................................................................................................................................................	941
Configuring Root Guard...........................................................................................................................................	942
Enabling SNMP Traps for Root Elections and Topology Changes......................................................................	943
Configuring Spanning Trees as Hitless......................................................................................................................	943
STP Loop Guard..............................................................................................................................................................	943
Configuring Loop Guard..........................................................................................................................................	944
Displaying STP Guard Configuration..........................................................................................................................	945
Chapter 56: SupportAssist........................................................................................................	946
Configuring SupportAssist Using a Configuration Wizard....................................................................................	946
Configuring SupportAssist Manually...........................................................................................................................	947
Configuring SupportAssist Activity............................................................................................................................	948
Configuring SupportAssist Company.........................................................................................................................	950
Configuring SupportAssist Person.............................................................................................................................	950
Configuring SupportAssist Server...............................................................................................................................	951
Viewing SupportAssist Configuration........................................................................................................................	952
Chapter 57: System Time and Date............................................................................................	954
Network Time Protocol.................................................................................................................................................	954
Protocol Overview....................................................................................................................................................	955
Configure the Network Time Protocol................................................................................................................	955
Enabling NTP.............................................................................................................................................................	955
Configuring NTP Broadcasts.................................................................................................................................	956
Disabling NTP on an Interface...............................................................................................................................	956
Configuring a Source IP Address for NTP Packets..........................................................................................	956
Configuring NTP Authentication...........................................................................................................................	957
Configuring NTP control key password...............................................................................................................	959
Configuring the NTP Step-Threshold..................................................................................................................	959
Dell EMC Networking OS Time and Date.................................................................................................................	959
Configuration Task List ..........................................................................................................................................	959
Setting the Time and Date for the Switch Software Clock...........................................................................	960
Setting the Timezone...............................................................................................................................................	960
Set Daylight Saving Time.........................................................................................................................................	961
Setting Daylight Saving Time Once.......................................................................................................................	961
Setting Recurring Daylight Saving Time...............................................................................................................	961
Chapter 58: Tunneling...............................................................................................................	963
Configuring a Tunnel......................................................................................................................................................	963
Configuring Tunnel Keepalive Settings......................................................................................................................	964
Configuring a Tunnel Interface....................................................................................................................................	964
Configuring Tunnel Allow-Remote Decapsulation...................................................................................................	965
Configuring the Tunnel Source Anylocal...................................................................................................................	965
Chapter 59: Uplink Failure Detection (UFD)...............................................................................	967
Feature Description........................................................................................................................................................	967

Contents 27

How Uplink Failure Detection Works..........................................................................................................................	968
UFD and NIC Teaming...................................................................................................................................................	969
Important Points to Remember...................................................................................................................................	969
Configuring Uplink Failure Detection..........................................................................................................................	970
Clearing a UFD-Disabled Interface..............................................................................................................................	971
Displaying Uplink Failure Detection.............................................................................................................................	972
Sample Configuration: Uplink Failure Detection......................................................................................................	974
Chapter 60: Upgrade Procedures...............................................................................................	976
Chapter 61: Virtual LANs (VLANs)..............................................................................................	977
Default VLAN....................................................................................................................................................................	977
Port-Based VLANs..........................................................................................................................................................	978
VLANs and Port Tagging...............................................................................................................................................	978
Configuration Task List..................................................................................................................................................	979
Creating a Port-Based VLAN.................................................................................................................................	979
Assigning Interfaces to a VLAN.............................................................................................................................	980
Moving Untagged Interfaces..................................................................................................................................	981
Assigning an IP Address to a VLAN......................................................................................................................	982
Configuring Native VLANs............................................................................................................................................	982
Enabling Null VLAN as the Default VLAN.................................................................................................................	983
Chapter 62: Virtual Link Trunking (VLT)....................................................................................	984
Overview...........................................................................................................................................................................	984
VLT Terminology.......................................................................................................................................................	986
Layer-2 Traffic in VLT Domains.............................................................................................................................	987
Interspersed VLANs..................................................................................................................................................	988
VLT on Core Switches.............................................................................................................................................	988
Enhanced VLT............................................................................................................................................................	989
Configure Virtual Link Trunking...................................................................................................................................	990
Important Points to Remember.............................................................................................................................	990
Configuration Notes.................................................................................................................................................	992
Primary and Secondary VLT Peers.......................................................................................................................	994
RSTP and VLT...........................................................................................................................................................	995
VLT Bandwidth Monitoring.....................................................................................................................................	995
VLT and Stacking......................................................................................................................................................	995
VLT and IGMP Snooping.........................................................................................................................................	996
VLT IPv6......................................................................................................................................................................	996
VLT Port Delayed Restoration...............................................................................................................................	996
Additional ARP Refresh on VLTi............................................................................................................................	996
PIM-Sparse Mode Support on VLT......................................................................................................................	997
VLT Routing ..............................................................................................................................................................	999
Non-VLT ARP Sync................................................................................................................................................	1002
RSTP Configuration......................................................................................................................................................	1002
Preventing Forwarding Loops in a VLT Domain...............................................................................................	1002
Sample RSTP configuration..................................................................................................................................	1003
Configuring VLT.......................................................................................................................................................	1003
PVST+ Configuration....................................................................................................................................................	1012
Peer Routing Configuration Example........................................................................................................................	1013

28 Contents

Dell-1 Switch Configuration...................................................................................................................................	1014
Dell-2 Switch Configuration...................................................................................................................................	1018
R1 Configuration.......................................................................................................................................................	1021
Access Switch A1 Configurations and Verification..........................................................................................	1022
eVLT Configuration Example......................................................................................................................................	1022
PIM-Sparse Mode Configuration Example..............................................................................................................	1025
Verifying a VLT Configuration....................................................................................................................................	1025
Additional VLT Sample Configurations.....................................................................................................................	1028
Troubleshooting VLT....................................................................................................................................................	1030
Reconfiguring Stacked Switches as VLT.................................................................................................................	1031
Specifying VLT Nodes in a PVLAN...........................................................................................................................	1032
Configuring a VLT VLAN or LAG in a PVLAN.........................................................................................................	1035
Creating a VLT LAG or a VLT VLAN...................................................................................................................	1035
Associating the VLT LAG or VLT VLAN in a PVLAN......................................................................................	1036
Proxy ARP Capability on VLT Peer Nodes..............................................................................................................	1037
VLT Nodes as Rendezvous Points for Multicast Resiliency...............................................................................	1038
Configuring VLAN-Stack over VLT...........................................................................................................................	1038
IPv6 Peer Routing in VLT Domains Overview.........................................................................................................	1041
Configure BFD in VLT Domain...................................................................................................................................	1045
Sample BFD configuration in VLT domain.........................................................................................................	1045
VXLAN on VLT...............................................................................................................................................................	1049
Chapter 63: VLT Proxy Gateway...............................................................................................	1052
Proxy Gateway in VLT Domains................................................................................................................................	1052
LLDP VLT Proxy Gateway in a Square VLT Topology....................................................................................	1055
Configuring a Static VLT Proxy Gateway...............................................................................................................	1056
Configuring an LLDP VLT Proxy Gateway..............................................................................................................	1056
VLT Proxy Gateway Sample Topology.....................................................................................................................	1057
VLT Domain Configuration....................................................................................................................................	1057
Dell-1 VLT Configuration........................................................................................................................................	1057
Dell-2 VLT Configuration.......................................................................................................................................	1058
Dell-3 VLT Configuration.......................................................................................................................................	1059
Dell-4 VLT Configuration.......................................................................................................................................	1060
Chapter 64: Virtual Extensible LAN (VXLAN)............................................................................	1061
advertise-local-mac......................................................................................................................................................	1062
Components of VXLAN network...............................................................................................................................	1062
Functional Overview of VXLAN Gateway...............................................................................................................	1063
VXLAN Frame Format..................................................................................................................................................	1063
Limitations on VXLAN .................................................................................................................................................	1065
Configuring and Controlling VXLAN from the NSX Controller GUI..................................................................	1065
Configuring and Controling VXLAN from Nuage Controller GUI.......................................................................	1070
Configuring VxLAN Gateway.......................................................................................................................................	1071
Connecting to an NVP Controller.........................................................................................................................	1071
Advertising VXLAN Access Ports to Controller................................................................................................	1071
Displaying VXLAN Configurations.............................................................................................................................	1072
VXLAN Service nodes for BFD...................................................................................................................................	1073
Static Virtual Extensible LAN (VXLAN)...................................................................................................................	1073
Configuring Static VXLAN.....................................................................................................................................	1074

Contents 29

Displaying Static VXLAN Configurations...........................................................................................................	1074
Disabling MAC Address Learning on Static VXLAN Tunnels........................................................................	1075
Preserving 802.1 p value across VXLAN tunnels...................................................................................................	1076
VXLAN Scenario............................................................................................................................................................	1076
Routing in and out of VXLAN tunnels......................................................................................................................	1076
Configuring VXLAN RIOT......................................................................................................................................	1078
VLT Scenario............................................................................................................................................................	1079
NSX Controller-based VXLAN for VLT....................................................................................................................	1080
Important Points to Remember............................................................................................................................	1081
Configure NSX Controller-based VxLAN in VLT Setup..................................................................................	1081
Configuring BFD and UFD for VXLAN................................................................................................................	1081
Configuring NSX-based VxLAN on VLT Peer Devices....................................................................................	1081
Configuring VLT for NSX-based VxLAN............................................................................................................	1082
Configuring and Controlling VXLAN from the NSX Controller GUI.............................................................	1087
Chapter 65: Virtual Routing and Forwarding (VRF)..................................................................	1092
VRF Overview................................................................................................................................................................	1092
VRF Configuration Notes............................................................................................................................................	1093
DHCP..........................................................................................................................................................................	1095
VRF Configuration........................................................................................................................................................	1095
Loading VRF CAM...................................................................................................................................................	1095
Creating a Non-Default VRF Instance................................................................................................................	1095
Assigning an Interface to a VRF..........................................................................................................................	1095
Assigning a Front-end Port to a Management VRF........................................................................................	1095
View VRF Instance Information...........................................................................................................................	1096
Assigning an OSPF Process to a VRF Instance...............................................................................................	1096
Configuring VRRP on a VRF Instance................................................................................................................	1096
Configuring Management VRF.............................................................................................................................	1097
Configuring a Static Route....................................................................................................................................	1098
Sample VRF Configuration..........................................................................................................................................	1098
Route Leaking VRFs......................................................................................................................................................	1103
Dynamic Route Leaking................................................................................................................................................	1104
Configuring Route Leaking without Filtering Criteria......................................................................................	1104
Configuring Route Leaking with Filtering...........................................................................................................	1106
Chapter 66: Virtual Router Redundancy Protocol (VRRP).........................................................	1109
VRRP Overview..............................................................................................................................................................	1109
VRRP Benefits.................................................................................................................................................................	1110
VRRP Implementation....................................................................................................................................................	1110
VRRP Configuration........................................................................................................................................................	1111
Configuration Task List............................................................................................................................................	1111
Setting VRRP Initialization Delay...........................................................................................................................	1119
Sample Configurations..................................................................................................................................................	1120
VRRP in a VRF Configuration................................................................................................................................	1123
VRRP for IPv6 Configuration................................................................................................................................	1128
Proxy Gateway with VRRP..........................................................................................................................................	1132
Chapter 67: Debugging and Diagnostics....................................................................................	1136
Offline Diagnostics.........................................................................................................................................................	1136

30 Contents