Dell MXL 10, MXL40GbE User Manual

Dell Networking Configuration Guide for the MXL 10/40GbE Switch I/O Module

9.8(0.0)

Notes, cautions, and warnings

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

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.

Copyright © 2015 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. Dell™ and the Dell logo are trademarks of Dell Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.

2015 - 05

Rev. A00

Contents
1 About this Guide.................................................................................................	33
Audience..............................................................................................................................................	33
Conventions........................................................................................................................................	33
Information Symbols...........................................................................................................................	34
Related Documents............................................................................................................................	34
2 Configuration Fundamentals...........................................................................	35
Accessing the Command Line............................................................................................................	35
CLI Modes............................................................................................................................................	35
Navigating CLI Modes...................................................................................................................	37
The do Command...............................................................................................................................	40
Undoing Commands..........................................................................................................................	40
Obtaining Help....................................................................................................................................	41
Entering and Editing Commands.......................................................................................................	42
Command History...............................................................................................................................	43
Filtering show Command Outputs.....................................................................................................	43
Multiple Users in Configuration Mode...............................................................................................	44
3 Getting Started....................................................................................................	46
Console Access...................................................................................................................................	47
Serial Console................................................................................................................................	47
External Serial Port with a USB Connector..................................................................................	49
Accessing the CLI Interface and Running Scripts Using SSH............................................................	49
Entering CLI commands Using an SSH Connection...................................................................	49
Executing Local CLI Scripts Using an SSH Connection...............................................................	49
Boot Process.......................................................................................................................................	50
Default Configuration.........................................................................................................................	52
Configuring a Host Name...................................................................................................................	52
Configuring a Host Name...................................................................................................................	52
Accessing the System Remotely.........................................................................................................	53
Accessing the MXL Switch Remotely............................................................................................	53
Configure the Management Port IP Address...............................................................................	53
Configure a Management Route..................................................................................................	53
Configuring a Username and Password.......................................................................................	54
Configuring the Enable Password......................................................................................................	54
Configuration File Management.........................................................................................................	55
Copy Files to and from the System..............................................................................................	55
Save the Running-Configuration..................................................................................................	56

3

Viewing Files..................................................................................................................................	57
Managing the File System...................................................................................................................	58
View the Command History...............................................................................................................	59
Using HTTP for File Transfers.............................................................................................................	60
Upgrading and Downgrading the Dell Networking OS.....................................................................	60
Using Hashes to Validate Software Images.......................................................................................	60
4 Management.......................................................................................................	62
Configuring Privilege Levels...............................................................................................................	62
Creating a Custom Privilege Level................................................................................................	62
Customizing a Privilege Level.......................................................................................................	63
Applying a Privilege Level to a Username....................................................................................	64
Applying a Privilege Level to a Terminal Line...............................................................................	65
Configuring Logging...........................................................................................................................	65
Audit and Security Logs.................................................................................................................	65
Configuring Logging Format .......................................................................................................	67
Setting Up a Secure Connection to a Syslog Server....................................................................	68
Display the Logging Buffer and the Logging Configuration.............................................................	69
Log Messages in the Internal Buffer...................................................................................................	70
Configuration Task List for System Log Management.................................................................	70
Disabling System Logging...................................................................................................................	70
Sending System Messages to a Syslog Server....................................................................................	70
Configuring a UNIX System as a Syslog Server.............................................................................	71
Changing System Logging Settings....................................................................................................	71
Display the Logging Buffer and the Logging Configuration..............................................................	72
Configuring a UNIX Logging Facility Level.........................................................................................	73
Synchronizing Log Messages..............................................................................................................	74
Enabling Timestamp on Syslog Messages..........................................................................................	74
File Transfer Services...........................................................................................................................	75
Configuration Task List for File Transfer Services........................................................................	75
Enabling the FTP Server.................................................................................................................	75
Configuring FTP Server Parameters..............................................................................................	76
Configuring FTP Client Parameters..............................................................................................	76
Terminal Lines......................................................................................................................................	77
Denying and Permitting Access to a Terminal Line.....................................................................	77
Configuring Login Authentication for Terminal Lines.................................................................	78
Setting Time Out of EXEC Privilege Mode.........................................................................................	79
Using Telnet to get to Another Network Device...............................................................................	79
Lock CONFIGURATION Mode...........................................................................................................	80
Viewing the Configuration Lock Status........................................................................................	80
Limit Concurrent Login Sessions........................................................................................................	81
Restrictions for Limiting the Number of Concurrent Sessions....................................................	81

4

Configuring Concurrent Session Limit.........................................................................................	81
Enabling the System to Clear Existing Sessions...........................................................................	82
Track Login Activity.............................................................................................................................	83
Restrictions for Tracking Login Activity........................................................................................	83
Configuring Login Activity Tracking.............................................................................................	83
Display Login Statistics..................................................................................................................	84
Recovering from a Forgotten Password............................................................................................	85
Recovering from a Forgotten Enable Password................................................................................	86
Recovering from a Failed Start...........................................................................................................	86
5 802.1X...................................................................................................................	88
The Port-Authentication Process.......................................................................................................	90
EAP over RADIUS...........................................................................................................................	92
Configuring 802.1X.............................................................................................................................	92
Related Configuration Tasks.........................................................................................................	92
Important Points to Remember..........................................................................................................	93
Enabling 802.1X...................................................................................................................................	93
Configuring Request Identity Re-Transmissions.........................................................................	95
Configuring a Quiet Period after a Failed Authentication...........................................................	95
Forcibly Authorizing or Unauthorizing a Port....................................................................................	96
Re-Authenticating a Port....................................................................................................................	97
Configuring Timeouts.........................................................................................................................	98
Configuring Dynamic VLAN Assignment with Port Authentication..................................................	99
Guest and Authentication-Fail VLANs........................................................................................	100
Configuring a Guest VLAN..........................................................................................................	101
Configuring an Authentication-Fail VLAN..................................................................................	101
6 Access Control List (ACL) VLAN Groups and Content Addressable
Memory (CAM)......................................................................................................	103
Optimizing CAM Utilization During the Attachment of ACLs to VLANs.........................................	103
Guidelines for Configuring ACL VLAN groups.................................................................................	104
Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters........................	105
Configuring ACL VLAN Groups...................................................................................................	105
Configuring FP Blocks for VLAN Parameters.............................................................................	106
Viewing CAM Usage..........................................................................................................................	107
Allocating FP Blocks for VLAN Processes........................................................................................	108
7 Access Control Lists (ACLs).............................................................................	110
IP Access Control Lists (ACLs)...........................................................................................................	110
Implementing ACL on the Dell Networking OS................................................................................	111
ACLs and VLANs.................................................................................................................................	111
ACL Optimization...............................................................................................................................	111

5

Determine the Order in which ACLs are Used to Classify Traffic....................................................	111
Example of the order Keyword to Determine ACL Sequence...................................................	112
IP Fragment Handling........................................................................................................................	112
IP Fragments ACL Examples..............................................................................................................	113
Layer 4 ACL Rules Examples.............................................................................................................	113
Configure a Standard IP ACL.............................................................................................................	114
Configuring a Standard IP ACL Filter.................................................................................................	115
Configure an Extended IP ACL..........................................................................................................	116
Configuring Filters with a Sequence Number..................................................................................	116
Configuring Filters Without a Sequence Number............................................................................	117
Established Flag.................................................................................................................................	118
Configure Layer 2 and Layer 3 ACLs.................................................................................................	118
Assign an IP ACL to an Interface.......................................................................................................	119
Applying an IP ACL............................................................................................................................	119
Counting ACL Hits.............................................................................................................................	120
Configure Ingress ACLs....................................................................................................................	120
Configure Egress ACLs......................................................................................................................	121
Applying Egress Layer 3 ACLs (Control-Plane).................................................................................	121
IP Prefix Lists......................................................................................................................................	122
Implementation Information.......................................................................................................	123
Configuration Task List for Prefix Lists.............................................................................................	123
Creating a Prefix List..........................................................................................................................	123
Creating a Prefix List Without a Sequence Number........................................................................	124
Viewing Prefix Lists............................................................................................................................	125
Applying a Prefix List for Route Redistribution.................................................................................	125
Applying a Filter to a Prefix List (OSPF).............................................................................................	126
ACL Resequencing............................................................................................................................	127
Resequencing an ACL or Prefix List..................................................................................................	127
Route Maps........................................................................................................................................	129
Implementation Information......................................................................................................	129
Important Points to Remember........................................................................................................	129
Configuration Task List for Route Maps...........................................................................................	130
Creating a Route Map.......................................................................................................................	130
Configure Route Map Filters.............................................................................................................	131
Configuring Match Routes................................................................................................................	132
Configuring Set Conditions..............................................................................................................	133
Configure a Route Map for Route Redistribution............................................................................	134
Configure a Route Map for Route Tagging......................................................................................	135
Continue Clause................................................................................................................................	135
Logging of ACL Processes................................................................................................................	136
Guidelines for Configuring ACL Logging..........................................................................................	137
Configuring ACL Logging..................................................................................................................	137

6

Flow-Based Monitoring Support for ACLs.......................................................................................	138
Behavior of Flow-Based Monitoring...........................................................................................	138
Enabling Flow-Based Monitoring.....................................................................................................	140
8 Bidirectional Forwarding Detection (BFD)..................................................	142
How BFD Works................................................................................................................................	142
BFD Packet Format......................................................................................................................	143
BFD Sessions................................................................................................................................	145
BFD Three-Way Handshake........................................................................................................	145
Session State Changes................................................................................................................	146
Important Points to Remember........................................................................................................	147
Configure BFD...................................................................................................................................	148
Configure BFD for Physical Ports...............................................................................................	148
Enabling BFD Globally.................................................................................................................	148
Establishing a Session on Physical Ports....................................................................................	149
Changing Physical Port Session Parameters..............................................................................	150
Disabling and Re-Enabling BFD..................................................................................................	151
Configure BFD for Static Routes.......................................................................................................	152
Related Configuration Tasks.......................................................................................................	152
Establishing Sessions for Static Routes.......................................................................................	152
Changing Static Route Session Parameters...............................................................................	153
Disabling BFD for Static Routes..................................................................................................	153
Configure BFD for OSPF...................................................................................................................	154
Related Configuration Tasks.......................................................................................................	154
Establishing Sessions with OSPF Neighbors...............................................................................	155
Changing OSPF Session Parameters..........................................................................................	156
Disabling BFD for OSPF...............................................................................................................	157
Configure BFD for OSPFv3................................................................................................................	157
Related Configuration Tasks.......................................................................................................	157
Establishing Sessions with OSPFv3 Neighbors...........................................................................	157
Changing OSPFv3 Session Parameters......................................................................................	158
Disabling BFD for OSPFv3...........................................................................................................	158
Configure BFD for BGP.....................................................................................................................	159
Prerequisites................................................................................................................................	159
Establishing Sessions with BGP Neighbors................................................................................	159
Disabling BFD for BGP.................................................................................................................	161
Use BFD in a BGP Peer Group....................................................................................................	162
Displaying BFD for BGP Information..........................................................................................	162
Configure BFD for VRRP...................................................................................................................	166
Related Configuration Tasks.......................................................................................................	167
Establishing Sessions with All VRRP Neighbors..........................................................................	167
Establishing VRRP Sessions on VRRP Neighbors.......................................................................	167

7

Changing VRRP Session Parameters..........................................................................................	168
Disabling BFD for VRRP...............................................................................................................	169
Configure BFD for VLANs.................................................................................................................	169
Related Configuration Task.........................................................................................................	170
Establish Sessions with VLAN Neighbors....................................................................................	170
Changing VLAN Session Parameters...........................................................................................	171
Disabling BFD for VLANs..............................................................................................................	171
Configure BFD for Port-Channels.....................................................................................................	171
Related Configuration Tasks.......................................................................................................	172
Establish Sessions on Port-Channels..........................................................................................	172
Changing Physical Port Session Parameters..............................................................................	173
Disabling BFD for Port-Channels................................................................................................	173
Configuring Protocol Liveness..........................................................................................................	173
Troubleshooting BFD........................................................................................................................	174
9 Border Gateway Protocol IPv4 (BGPv4).......................................................	175
Autonomous Systems (AS)................................................................................................................	175
Sessions and Peers............................................................................................................................	177
Establish a Session.......................................................................................................................	178
Route Reflectors................................................................................................................................	179
Communities...............................................................................................................................	179
BGP Attributes...................................................................................................................................	180
Best Path Selection Criteria........................................................................................................	180
Weight..........................................................................................................................................	182
Local Preference.........................................................................................................................	182
Multi-Exit Discriminators (MEDs)................................................................................................	183
Origin...........................................................................................................................................	184
AS Path.........................................................................................................................................	185
Next Hop......................................................................................................................................	185
Multiprotocol BGP............................................................................................................................	186
Implement BGP with the Dell Networking OS.................................................................................	186
Additional Path (Add-Path) Support...........................................................................................	186
Advertise IGP Cost as MED for Redistributed Routes................................................................	186
Ignore Router-ID for Some Best-Path Calculations..................................................................	187
Four-Byte AS Numbers................................................................................................................	187
AS4 Number Representation......................................................................................................	188
AS Number Migration..................................................................................................................	190
BGP4 Management Information Base (MIB)...............................................................................	191
Important Points to Remember..................................................................................................	191
Configuration Information................................................................................................................	192
BGP Configuration............................................................................................................................	193
Enabling BGP...............................................................................................................................	194

8

Enabling MBGP Configurations..................................................................................................	227
BGP Regular Expression Optimization.............................................................................................	228
Debugging BGP................................................................................................................................	228
Storing Last and Bad PDUs.........................................................................................................	229
PDU Counters.............................................................................................................................	230
Sample Configurations.....................................................................................................................	230
10 Content Addressable Memory (CAM).........................................................	240
CAM Allocation.................................................................................................................................	240
Test CAM Usage................................................................................................................................	241
View CAM-ACL Settings...................................................................................................................	242
CAM Optimization............................................................................................................................	242
11 Control Plane Policing (CoPP).....................................................................	243
Configure Control Plane Policing....................................................................................................	244
Configuring CoPP for Protocols................................................................................................	245
Configuring CoPP for CPU Queues...........................................................................................	247
Show Commands.......................................................................................................................	248
12 Data Center Bridging (DCB).........................................................................	250
Ethernet Enhancements in Data Center Bridging...........................................................................	250
Priority-Based Flow Control........................................................................................................	251
Enhanced Transmission Selection..............................................................................................	252
Data Center Bridging Exchange Protocol (DCBx).....................................................................	254
Data Center Bridging in a Traffic Flow.......................................................................................	254
Enabling Data Center Bridging.........................................................................................................	255
Configuring DCB Maps and its Attributes..................................................................................	256
Data Center Bridging: Default Configuration..................................................................................	259
Interworking of DCB Map With DCB Buffer Threshold Settings....................................................	260
Configuring Priority-Based Flow Control........................................................................................	261
Configuring Lossless Queues.....................................................................................................	262
Configuring the PFC Buffer in a Switch Stack...........................................................................	263
Priority-Based Flow Control Using Dynamic Buffer Method....................................................	264
Configure Enhanced Transmission Selection..................................................................................	265
ETS Prerequisites and Restrictions.............................................................................................	266
Creating an ETS Priority Group..................................................................................................	266
ETS Operation with DCBx...........................................................................................................	267
Configuring Bandwidth Allocation for DCBx CIN.....................................................................	268
Hierarchical Scheduling in ETS Output Policies........................................................................	269
Applying DCB Policies with an ETS Configuration..........................................................................	269
PFC and ETS Configuration Examples.............................................................................................	270
Using PFC and ETS to Manage Data Center Traffic...................................................................	270

9

Using PFC and ETS to Manage Converged Ethernet Traffic in a Switch Stack	........................ 272
Applying DCB Policies in a Switch Stack..........................................................................................	273
Configure a DCBx Operation............................................................................................................	273
DCBx Operation..........................................................................................................................	273
DCBx Port Roles..........................................................................................................................	274
DCB Configuration Exchange....................................................................................................	276
Configuration Source Election...................................................................................................	276
Propagation of DCB Information...............................................................................................	276
Auto-Detection and Manual Configuration of the DCBx Version.............................................	277
DCBx Example.............................................................................................................................	277
DCBx Prerequisites and Restrictions..........................................................................................	278
Configuring DCBx.......................................................................................................................	279
Verifying the DCB Configuration.....................................................................................................	283
QoS dot1p Traffic Classification and Queue Assignment...............................................................	293
Configuring the Dynamic Buffer Method........................................................................................	294
13 Debugging and Diagnostics.........................................................................	296
Offline Diagnostics...........................................................................................................................	296
Important Points to Remember.................................................................................................	296
Running Offline Diagnostics.......................................................................................................	296
Trace Logs.........................................................................................................................................	299
Auto Save on Crash or Rollover.................................................................................................	299
Using the Show Hardware Commands...........................................................................................	300
Enabling Environmental Monitoring.................................................................................................	301
Recognize an Over-Temperature Condition.............................................................................	303
Troubleshoot an Over-Temperature Condition........................................................................	303
Recognize an Under-Voltage Condition...................................................................................	304
Troubleshoot an Under-Voltage Condition..............................................................................	304
Troubleshooting Packet Loss...........................................................................................................	305
Displaying Drop Counters..........................................................................................................	305
Dataplane Statistics.....................................................................................................................	306
Display Stack Port Statistics........................................................................................................	307
Displaying Stack Member Counters...........................................................................................	307
Enabling Application Core Dumps...................................................................................................	308
Mini Core Dumps..............................................................................................................................	308
Enabling TCP Dumps........................................................................................................................	309
Enabling Buffer Statistics Tracking ..................................................................................................	310
14 Dynamic Host Configuration Protocol (DHCP)........................................	311
DHCP Packet Format and Options...................................................................................................	311
Assign an IP Address using DHCP...............................................................................................	313
Implementation Information............................................................................................................	314

10

Configure the System to be a DHCP Server....................................................................................	315
Configuring the Server for Automatic Address Allocation.........................................................	315
Configuration Tasks....................................................................................................................	316
Specifying a Default Gateway.....................................................................................................	317
Enabling the DHCP Server...........................................................................................................	317
Configure a Method of Hostname Resolution...........................................................................	318
Creating Manual Binding Entries.................................................................................................	319
Debugging the DHCP Server......................................................................................................	319
Using DHCP Clear Commands...................................................................................................	319
Configure the System to be a Relay Agent......................................................................................	320
Configure the System to be a DHCP Client.....................................................................................	322
Configuring the DHCP Client System........................................................................................	322
DHCP Client on a Management Interface.................................................................................	326
DHCP Client Operation with Other Features.............................................................................	327
Configure Secure DHCP...................................................................................................................	328
Option 82....................................................................................................................................	328
DHCP Snooping..........................................................................................................................	329
Drop DHCP Packets on Snooped VLANs Only..........................................................................	332
Dynamic ARP Inspection............................................................................................................	333
Configuring Dynamic ARP Inspection........................................................................................	334
Source Address Validation..........................................................................................................	335
15 Equal Cost Multi-Path (ECMP)......................................................................	337
ECMP for Flow-Based Affinity..........................................................................................................	337
Enabling Deterministic ECMP Next Hop....................................................................................	337
Link Bundle Monitoring....................................................................................................................	338
Managing ECMP Group Paths..........................................................................................................	338
16 FC FLEXIO FPORT...........................................................................................	340
FC FLEXIO FPORT.............................................................................................................................	340
Configuring Switch Mode to FCF Port Mode..................................................................................	340
Name Server......................................................................................................................................	341
FCoE Maps........................................................................................................................................	342
Creating an FCoE Map......................................................................................................................	342
Zoning...............................................................................................................................................	344
Creating Zone and Adding Members...............................................................................................	344
Creating Zone Alias and Adding Members......................................................................................	345
Creating Zonesets.............................................................................................................................	345
Activating a Zoneset.........................................................................................................................	346
Displaying the Fabric Parameters.....................................................................................................	346
17 FCoE Transit....................................................................................................	349

11

Fibre Channel over Ethernet............................................................................................................	349
Ensure Robustness in a Converged Ethernet Network...................................................................	349
FIP Snooping on Ethernet Bridges....................................................................................................	351
FIP Snooping in a Switch Stack........................................................................................................	354
Using FIP Snooping...........................................................................................................................	354
Important Points to Remember.................................................................................................	354
Enabling the FCoE Transit Feature.............................................................................................	355
Enable FIP Snooping on VLANs..................................................................................................	355
Configure the FC-MAP Value.....................................................................................................	355
Configure a Port for a Bridge-to-Bridge Link............................................................................	355
Configure a Port for a Bridge-to-FCF Link................................................................................	356
Impact on Other Software Features...........................................................................................	356
FIP Snooping Prerequisites.........................................................................................................	356
FIP Snooping Restrictions...........................................................................................................	357
Configuring FIP Snooping...........................................................................................................	357
Displaying FIP Snooping Information..............................................................................................	358
FCoE Transit Configuration Example...............................................................................................	364
18 FIPS Cryptography.........................................................................................	366
Preparing the System........................................................................................................................	366
Enabling FIPS Mode..........................................................................................................................	366
Generating Host-Keys......................................................................................................................	367
Monitoring FIPS Mode Status...........................................................................................................	367
Disabling FIPS Mode.........................................................................................................................	368
19 Force10 Resilient Ring Protocol (FRRP).....................................................	370
Protocol Overview............................................................................................................................	370
Ring Status...................................................................................................................................	371
Multiple FRRP Rings.....................................................................................................................	372
Important FRRP Points................................................................................................................	373
Important FRRP Concepts..........................................................................................................	374
Implementing FRRP..........................................................................................................................	375
FRRP Configuration...........................................................................................................................	375
Creating the FRRP Group............................................................................................................	376
Configuring the Control VLAN...................................................................................................	376
Configuring and Adding the Member VLANs.............................................................................	377
Setting the FRRP Timers..............................................................................................................	379
Clearing the FRRP Counters.......................................................................................................	379
Viewing the FRRP Configuration................................................................................................	379
Viewing the FRRP Information...................................................................................................	380
Troubleshooting FRRP......................................................................................................................	380
Configuration Checks.................................................................................................................	380

12

Sample Configuration and Topology...............................................................................................	381
20 GARP VLAN Registration Protocol (GVRP)................................................	383
Important Points to Remember.......................................................................................................	383
Configure GVRP................................................................................................................................	384
Related Configuration Tasks.......................................................................................................	385
Enabling GVRP Globally....................................................................................................................	385
Enabling GVRP on a Layer 2 Interface.............................................................................................	385
Configure GVRP Registration...........................................................................................................	386
Configure a GARP Timer..................................................................................................................	386
21 Internet Group Management Protocol (IGMP).........................................	388
IGMP Protocol Overview..................................................................................................................	388
IGMP Version 2...........................................................................................................................	388
IGMP Version 3...........................................................................................................................	390
IGMP Snooping.................................................................................................................................	393
IGMP Snooping Implementation Information...........................................................................	393
Configuring IGMP Snooping......................................................................................................	394
Enabling IGMP Immediate-Leave...............................................................................................	394
Disabling Multicast Flooding......................................................................................................	395
Specifying a Port as Connected to a Multicast Router..............................................................	395
Configuring the Switch as Querier.............................................................................................	395
Fast Convergence after MSTP Topology Changes.........................................................................	396
Designating a Multicast Router Interface........................................................................................	396
22 Interfaces.........................................................................................................	397
Basic Interface Configuration...........................................................................................................	397
Advanced Interface Configuration...................................................................................................	397
Interface Types.................................................................................................................................	398
View Basic Interface Information.....................................................................................................	398
Enabling a Physical Interface...........................................................................................................	400
Physical Interfaces............................................................................................................................	401
Configuration Task List for Physical Interfaces..........................................................................	401
Overview of Layer Modes...........................................................................................................	401
Configuring Layer 2 (Data Link) Mode.......................................................................................	402
Configuring Layer 2 (Interface) Mode........................................................................................	402
Configuring Layer 3 (Network) Mode........................................................................................	403
Configuring Layer 3 (Interface) Mode........................................................................................	403
Management Interfaces...................................................................................................................	404
Configuring Management Interfaces on the MXL Switch.........................................................	405
VLAN Interfaces................................................................................................................................	406
Loopback Interfaces.........................................................................................................................	407

13

Null Interfaces...................................................................................................................................	408
Port Channel Interfaces...................................................................................................................	408
Port Channel Definition and Standards.....................................................................................	408
Port Channel Benefits.................................................................................................................	408
Port Channel Implementation...................................................................................................	409
100/1000/10000 Mbps Interfaces in Port Channels.................................................................	409
Configuration Tasks for Port Channel Interfaces......................................................................	410
Creating a Port Channel.............................................................................................................	410
Adding a Physical Interface to a Port Channel..........................................................................	410
Reassigning an Interface to a New Port Channel......................................................................	412
Configuring the Minimum Oper Up Links in a Port Channel....................................................	413
Adding or Removing a Port Channel from a VLAN....................................................................	413
Assigning an IP Address to a Port Channel................................................................................	414
Deleting or Disabling a Port Channel.........................................................................................	414
Load Balancing through Port Channels...........................................................................................	415
Load-Balancing Method...................................................................................................................	415
Hash Algorithm.................................................................................................................................	416
Server Ports.......................................................................................................................................	416
Default Configuration without Start-up Config.........................................................................	417
Bulk Configuration............................................................................................................................	417
Interface Range...........................................................................................................................	417
Bulk Configuration Examples.....................................................................................................	418
Defining Interface Range Macros.....................................................................................................	419
Define the Interface Range........................................................................................................	420
Choosing an Interface-Range Macro........................................................................................	420
Monitoring and Maintaining Interfaces............................................................................................	420
Maintenance Using TDR..............................................................................................................	421
Splitting QSFP Ports to SFP+ Ports..................................................................................................	422
Merging SFP+ Ports to QSFP 40G Ports....................................................................................	423
Configure the MTU Size on an Interface...................................................................................	423
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................	424
Important Points to Remember.................................................................................................	425
Example Scenarios......................................................................................................................	425
Layer 2 Flow Control Using Ethernet Pause Frames.......................................................................	425
Enabling Pause Frames...............................................................................................................	426
Configure MTU Size on an Interface................................................................................................	427
Port-Pipes.........................................................................................................................................	428
Auto-Negotiation on Ethernet Interfaces........................................................................................	428
Setting the Speed and Duplex Mode of Ethernet Interfaces.....................................................	428
View Advanced Interface Information.............................................................................................	430
Configuring the Interface Sampling Size....................................................................................	431
Dynamic Counters......................................................................................................................	432

14

Enhanced Validation of Interface Ranges........................................................................................	434
Enhanced Control of Remote Fault Indication Processing............................................................	434
23 Internet Protocol Security (IPSec)..............................................................	435
Configuring IPSec ............................................................................................................................	436
24 IPv4 Routing...................................................................................................	437
IP Addresses......................................................................................................................................	437
Implementation Information......................................................................................................	437
Configuration Tasks for IP Addresses........................................................................................	438
IPv4 Path MTU Discovery Overview.................................................................................................	441
Using the Configured Source IP Address in ICMP Messages..........................................................	441
Configuring the ICMP Source Interface.....................................................................................	442
Configuring the Duration to Establish a TCP Connection..............................................................	442
Enabling Directed Broadcast............................................................................................................	443
Resolution of Host Names...............................................................................................................	443
Enabling Dynamic Resolution of Host Names..........................................................................	443
Specifying the Local System Domain and a List of Domains....................................................	444
Configuring DNS with Traceroute.............................................................................................	444
ARP....................................................................................................................................................	445
Configuration Tasks for ARP......................................................................................................	446
ARP Learning via Gratuitous ARP.....................................................................................................	447
ARP Learning via ARP Request.........................................................................................................	448
Configuring ARP Retries...................................................................................................................	449
ICMP..................................................................................................................................................	449
Configuration Tasks for ICMP....................................................................................................	449
UDP Helper.......................................................................................................................................	450
Configure UDP Helper................................................................................................................	450
Important Points to Remember.................................................................................................	450
Enabling UDP Helper..................................................................................................................	450
Configurations Using UDP Helper....................................................................................................	451
UDP Helper with Broadcast-All Addresses.................................................................................	451
UDP Helper with Subnet Broadcast Addresses..........................................................................	452
UDP Helper with Configured Broadcast Addresses..................................................................	453
UDP Helper with No Configured Broadcast Addresses............................................................	453
Troubleshooting UDP Helper...........................................................................................................	453
25 IPv6 Addressing..............................................................................................	455
Protocol Overview............................................................................................................................	455
Extended Address Space.............................................................................................................	455
Stateless Autoconfiguration.......................................................................................................	455
IPv6 Header Fields.............................................................................................................................	457

15

Version (4 bits).............................................................................................................................	457
Traffic Class (8 bits).....................................................................................................................	457
Flow Label (20 bits).....................................................................................................................	457
Payload Length (16 bits)..............................................................................................................	458
Next Header (8 bits)....................................................................................................................	458
Hop Limit (8 bits).........................................................................................................................	458
Source Address (128 bits)...........................................................................................................	459
Destination Address (128 bits)....................................................................................................	459
Extension Header Fields...................................................................................................................	459
Hop-by-Hop Options Header....................................................................................................	459
Addressing........................................................................................................................................	460
Link-local Addresses...................................................................................................................	461
Static and Dynamic Addressing..................................................................................................	461
Implementing IPv6 with the Dell Networking OS............................................................................	461
ICMPv6..............................................................................................................................................	464
Path MTU Discovery.........................................................................................................................	464
IPv6 Neighbor Discovery..................................................................................................................	465
IPv6 Neighbor Discovery of MTU Packets.................................................................................	466
Configuring the IPv6 Recursive DNS Server..............................................................................	466
Debugging IPv6 RDNSS Information Sent to the Host .............................................................	467
Displaying IPv6 RDNSS Information...........................................................................................	467
IPv6 Multicast....................................................................................................................................	467
Secure Shell (SSH) Over an IPv6 Transport.....................................................................................	468
Configuration Task List for IPv6.......................................................................................................	468
Adjusting Your CAM-Profile.......................................................................................................	468
Assigning an IPv6 Address to an Interface.................................................................................	469
Assigning a Static IPv6 Route.....................................................................................................	470
Configuring Telnet with IPv6......................................................................................................	470
SNMP over IPv6...........................................................................................................................	471
Showing IPv6 Information...........................................................................................................	471
Showing an IPv6 Interface..........................................................................................................	471
Showing IPv6 Routes..................................................................................................................	472
Showing the Running-Configuration for an Interface..............................................................	473
Clearing IPv6 Routes...................................................................................................................	474
26 iSCSI Optimization.........................................................................................	475
iSCSI Optimization Overview............................................................................................................	475
Monitoring iSCSI Traffic Flows....................................................................................................	477
Information Monitored in iSCSI Traffic Flows............................................................................	477
Detection and Auto-Configuration for Dell EqualLogic Arrays.................................................	477
Configuring Detection and Ports for Dell Compellent Arrays..................................................	478
iSCSI Optimization: Operation...................................................................................................	478

16

Default iSCSI Optimization Values.............................................................................................	479
Displaying iSCSI Optimization Information.....................................................................................	479
27 Intermediate System to Intermediate System..........................................	481
IS-IS Protocol Overview....................................................................................................................	481
IS-IS Addressing................................................................................................................................	481
Multi-Topology IS-IS........................................................................................................................	482
Transition Mode..........................................................................................................................	483
Interface Support........................................................................................................................	483
Adjacencies.................................................................................................................................	483
Graceful Restart................................................................................................................................	483
Timers..........................................................................................................................................	484
Implementation Information............................................................................................................	484
Configuration Information...............................................................................................................	485
Configuration Tasks for IS-IS......................................................................................................	485
IS-IS Metric Styles.............................................................................................................................	502
Configure Metric Values...................................................................................................................	502
Maximum Values in the Routing Table......................................................................................	502
Change the IS-IS Metric Style in One Level Only......................................................................	502
Leaks from One Level to Another..............................................................................................	504
Sample Configurations.....................................................................................................................	505
28 Link Aggregation Control Protocol (LACP)...............................................	510
Introduction to Dynamic LAGs and LACP........................................................................................	510
Important Points to Remember..................................................................................................	510
LACP Modes.................................................................................................................................	511
Configuring LACP Commands....................................................................................................	511
LACP Configuration Tasks................................................................................................................	512
Creating a LAG.............................................................................................................................	512
Configuring the LAG Interfaces as Dynamic..............................................................................	513
Setting the LACP Long Timeout.................................................................................................	513
Shared LAG State Tracking...............................................................................................................	514
Configuring Shared LAG State Tracking...........................................................................................	515
Important Points about Shared LAG State Tracking...................................................................	517
LACP Basic Configuration Example..................................................................................................	517
Configure a LAG on ALPHA.........................................................................................................	517
29 Layer 2..............................................................................................................	526
Manage the MAC Address Table......................................................................................................	526
Clearing the MAC Address Table................................................................................................	526
Setting the Aging Time for Dynamic Entries..............................................................................	526
Configuring a Static MAC Address..............................................................................................	527

17

Displaying the MAC Address Table.............................................................................................	527
MAC Learning Limit...........................................................................................................................	527
Setting the MAC Learning Limit..................................................................................................	528
mac learning-limit Dynamic.......................................................................................................	528
mac learning-limit station-move...............................................................................................	529
Learning Limit Violation Actions.................................................................................................	529
Setting Station Move Violation Actions......................................................................................	529
Recovering from Learning Limit and Station Move Violations..................................................	530
NIC Teaming.....................................................................................................................................	530
MAC Move Optimization.............................................................................................................	532
30 Link Layer Discovery Protocol (LLDP)........................................................	533
802.1AB (LLDP) Overview.................................................................................................................	533
Protocol Data Units.....................................................................................................................	533
Optional TLVs....................................................................................................................................	534
Management TLVs.......................................................................................................................	535
TIA-1057 (LLDP-MED) Overview......................................................................................................	537
TIA Organizationally Specific TLVs.............................................................................................	537
Extended Power via MDI TLV......................................................................................................	541
Configure LLDP.................................................................................................................................	542
Related Configuration Tasks.......................................................................................................	542
Important Points to Remember.................................................................................................	542
LLDP Compatibility.....................................................................................................................	542
CONFIGURATION versus INTERFACE Configurations....................................................................	542
Enabling LLDP...................................................................................................................................	543
Disabling and Undoing LLDP......................................................................................................	543
Advertising TLVs................................................................................................................................	544
Viewing the LLDP Configuration......................................................................................................	545
Viewing Information Advertised by Adjacent LLDP Agents............................................................	546
Configuring LLDPDU Intervals..........................................................................................................	547
Configuring Transmit and Receive Mode........................................................................................	548
Configuring a Time to Live...............................................................................................................	549
Debugging LLDP...............................................................................................................................	549
Relevant Management Objects........................................................................................................	550
31 Microsoft Network Load Balancing............................................................	557
NLB Unicast Mode Scenario.............................................................................................................	557
NLB Multicast Mode Scenario..........................................................................................................	558
Limitations With Enabling NLB on Switches....................................................................................	558
Benefits and Working of Microsoft Clustering................................................................................	558
Enable and Disable VLAN Flooding .................................................................................................	559
Configuring a Switch for NLB ..........................................................................................................	559

18

.....................................................................................................................................................	559
32 Multicast Source Discovery Protocol (MSDP)...........................................	560
Protocol Overview............................................................................................................................	560
Anycast RP.........................................................................................................................................	562
Implementation Information............................................................................................................	562
Configure the Multicast Source Discovery Protocol.......................................................................	563
Related Configuration Tasks.......................................................................................................	563
Enabling MSDP..................................................................................................................................	567
Manage the Source-Active Cache...................................................................................................	568
Viewing the Source-Active Cache.............................................................................................	568
Limiting the Source-Active Cache.............................................................................................	569
Clearing the Source-Active Cache.............................................................................................	569
Enabling the Rejected Source-Active Cache.............................................................................	569
Accept Source-Active Messages that Fail the RFP Check..............................................................	569
Specifying Source-Active Messages.................................................................................................	573
Limiting the Source-Active Messages from a Peer..........................................................................	574
Preventing MSDP from Caching a Local Source.............................................................................	574
Preventing MSDP from Caching a Remote Source.........................................................................	575
Preventing MSDP from Advertising a Local Source.........................................................................	576
Logging Changes in Peership States................................................................................................	577
Terminating a Peership.....................................................................................................................	577
Clearing Peer Statistics.....................................................................................................................	578
Debugging MSDP..............................................................................................................................	578
MSDP with Anycast RP......................................................................................................................	579
Configuring Anycast RP....................................................................................................................	580
Reducing Source-Active Message Flooding..............................................................................	581
Specifying the RP Address Used in SA Messages.......................................................................	581
MSDP Sample Configurations..........................................................................................................	584
33 Multiple Spanning Tree Protocol (MSTP)...................................................	587
Protocol Overview............................................................................................................................	587
Spanning Tree Variations..................................................................................................................	588
Implementation Information............................................................................................................	588
Configure Multiple Spanning Tree Protocol....................................................................................	588
Related Configuration Tasks......................................................................................................	588
Enable Multiple Spanning Tree Globally..........................................................................................	589
Creating Multiple Spanning Tree Instances.....................................................................................	589
Influencing MSTP Root Selection....................................................................................................	590
Interoperate with Non-Dell Networking OS Bridges.......................................................................	591
Changing the Region Name or Revision..........................................................................................	591
Modifying Global Parameters...........................................................................................................	592

19

Enable BPDU Filtering Globally........................................................................................................	593
Modifying the Interface Parameters.................................................................................................	594
Configuring an EdgePort..................................................................................................................	595
Flush MAC Addresses after a Topology Change.............................................................................	596
MSTP Sample Configurations...........................................................................................................	596
Router 1 Running-ConfigurationRouter 2 Running-ConfigurationRouter 3 Running-
ConfigurationSFTOS Example Running-Configuration.............................................................	597
Debugging and Verifying MSTP Configurations.............................................................................	600
34 Multicast Features.........................................................................................	603
Enabling IP Multicast........................................................................................................................	603
Implementation Information............................................................................................................	603
First Packet Forwarding for Lossless Multicast................................................................................	604
Multicast Policies..............................................................................................................................	604
IPv4 Multicast Policies......................................................................................................................	604
Limiting the Number of Multicast Routes..................................................................................	605
Preventing a Host from Joining a Group...................................................................................	605
Rate Limiting IGMP Join Requests.............................................................................................	609
Preventing a PIM Router from Forming an Adjacency..............................................................	609
Preventing a Source from Registering with the RP...................................................................	609
Preventing a PIM Router from Processing a Join......................................................................	612
35 Open Shortest Path First (OSPFv2 and OSPFv3).......................................	613
Protocol Overview............................................................................................................................	613
Autonomous System (AS) Areas..................................................................................................	613
Area Types...................................................................................................................................	614
Networks and Neighbors............................................................................................................	615
Router Types................................................................................................................................	615
Link-State Advertisements (LSAs)................................................................................................	617
Router Priority and Cost..............................................................................................................	619
OSPF with the Dell Networking OS..................................................................................................	619
Graceful Restart..........................................................................................................................	620
Fast Convergence (OSPFv2, IPv4 Only)......................................................................................	621
Multi-Process OSPFv2 (IPv4 only)..............................................................................................	621
RFC-2328 Compliant OSPF Flooding........................................................................................	622
OSPF ACK Packing......................................................................................................................	623
Setting OSPF Adjacency with Cisco Routers.............................................................................	623
Configuration Information...............................................................................................................	624
Configuration Task List for OSPFv2 (OSPF for IPv4)..................................................................	624
Troubleshooting OSPFv2............................................................................................................	638
Configuration Task List for OSPFv3 (OSPF for IPv6).......................................................................	642
Enabling IPv6 Unicast Routing...................................................................................................	643

20

Assigning IPv6 Addresses on an Interface.................................................................................	643
Assigning Area ID on an Interface..............................................................................................	643
Assigning OSPFv3 Process ID and Router ID Globally..............................................................	644
Configuring Stub Areas...............................................................................................................	644
Configuring Passive-Interface....................................................................................................	644
Redistributing Routes..................................................................................................................	645
Configuring a Default Route......................................................................................................	645
Enabling OSPFv3 Graceful Restart.............................................................................................	646
Displaying Graceful Restart........................................................................................................	647
OSPFv3 Authentication Using IPsec...........................................................................................	648
36 Policy-based Routing (PBR).........................................................................	658
Overview...........................................................................................................................................	658
Implementing Policy-based Routing with Dell Networking OS.....................................................	660
Configuration Task List for Policy-based Routing..........................................................................	660
PBR Exceptions (Permit).............................................................................................................	663
Sample Configuration......................................................................................................................	666
Create the Redirect-List GOLDAssign Redirect-List GOLD to Interface 2/11View
Redirect-List GOLD....................................................................................................................	666
37 PIM Sparse-Mode (PIM-SM)..........................................................................	671
Implementation Information............................................................................................................	671
Protocol Overview.............................................................................................................................	671
Requesting Multicast Traffic........................................................................................................	671
Refuse Multicast Traffic...............................................................................................................	672
Send Multicast Traffic..................................................................................................................	672
Configuring PIM-SM.........................................................................................................................	673
Related Configuration Tasks.......................................................................................................	673
Enable PIM-SM..................................................................................................................................	673
Configuring S,G Expiry Timers..........................................................................................................	675
Configuring a Static Rendezvous Point...........................................................................................	676
Overriding Bootstrap Router Updates........................................................................................	676
Configuring a Designated Router.....................................................................................................	677
Creating Multicast Boundaries and Domains...................................................................................	677
Enabling PIM-SM Graceful Restart...................................................................................................	678
38 PIM Source-Specific Mode (PIM-SSM).......................................................	679
Configure PIM-SMM.........................................................................................................................	679
Related Configuration Tasks.......................................................................................................	679
Implementation Information...........................................................................................................	680
Important Points to Remember.................................................................................................	680
Enabling PIM-SSM............................................................................................................................	680

21

Use PIM-SSM with IGMP Version 2 Hosts........................................................................................	681
Configuring PIM-SSM with IGMPv2............................................................................................	681
39 Port Monitoring..............................................................................................	683
Important Points to Remember.......................................................................................................	683
Configuring Port Monitoring............................................................................................................	684
Enabling Flow-Based Monitoring....................................................................................................	686
Remote Port Mirroring......................................................................................................................	687
Remote Port Mirroring Example.................................................................................................	687
Configuring Remote Port Mirroring...........................................................................................	688
Displaying Remote-Port Mirroring Configurations...................................................................	690
Configuring the Sample Remote Port Mirroring.......................................................................	690
Configuring the Encapsulated Remote Port Mirroring...................................................................	693
Configuration steps for ERPM ...................................................................................................	693
ERPM Behavior on a typical Dell Networking OS ...........................................................................	695
Decapsulation of ERPM packets at the Destination IP/ Analyzer.............................................	695
40 Private VLANs (PVLAN)..................................................................................	697
Private VLAN Concepts.....................................................................................................................	697
Using the Private VLAN Commands..........................................................................................	698
Configuration Task List...............................................................................................................	699
Private VLAN Configuration Example.........................................................................................	703
41 Per-VLAN Spanning Tree Plus (PVST+).......................................................	707
Protocol Overview............................................................................................................................	707
Implementation Information......................................................................................................	708
Configure Per-VLAN Spanning Tree Plus........................................................................................	708
Related Configuration Tasks......................................................................................................	708
Enabling PVST+.................................................................................................................................	708
Disabling PVST+................................................................................................................................	709
Influencing PVST+ Root Selection.............................................................................................	709
Modifying Global PVST+ Parameters................................................................................................	711
Modifying Interface PVST+ Parameters............................................................................................	712
Configuring an EdgePort...................................................................................................................	713
PVST+ in Multi-Vendor Networks.....................................................................................................	714
Enabling PVST+ Extend System ID...................................................................................................	714
PVST+ Sample Configurations..........................................................................................................	715
Enable BPDU Filtering globally..........................................................................................................	717
42 Quality of Service (QoS)................................................................................	719
Implementation Information.............................................................................................................	721
Port-Based QoS Configurations.......................................................................................................	721

22

Setting dot1p Priorities for Incoming Traffic..............................................................................	721
Honoring dot1p Priorities on Ingress Traffic..............................................................................	722
Configuring Port-Based Rate Policing.......................................................................................	723
Configuring Port-Based Rate Shaping.......................................................................................	723
Guidelines for Configuring ECN for Classifying and Color-Marking Packets................................	724
Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class..........	724
Classifying Incoming Packets Using ECN and Color-Marking..................................................	725
Sample configuration to mark non-ecn packets as “yellow” with single traffic class..............	727
Policy-Based QoS Configurations....................................................................................................	729
DSCP Color Maps........................................................................................................................	729
Classify Traffic..............................................................................................................................	731
Create a QoS Policy....................................................................................................................	736
Create Policy Maps......................................................................................................................	739
Enabling QoS Rate Adjustment........................................................................................................	744
Enabling Strict-Priority Queueing....................................................................................................	745
Weighted Random Early Detection..................................................................................................	745
Creating WRED Profiles..............................................................................................................	746
Applying a WRED Profile to Traffic.............................................................................................	747
Displaying Default and Configured WRED Profiles....................................................................	747
Displaying WRED Drop Statistics................................................................................................	747
Displaying egress-queue Statistics.............................................................................................	748
Classifying Layer 2 Traffic on Layer 3 Interfaces ......................................................................	748
Classifying Packets Based on a Combination of DSCP Code Points and VLAN IDs................	749
43 Routing Information Protocol (RIP)............................................................	751
Protocol Overview.............................................................................................................................	751
RIPv1.............................................................................................................................................	751
RIPv2............................................................................................................................................	752
Implementation Information............................................................................................................	752
Configuration Information................................................................................................................	752
Configuration Task List...............................................................................................................	752
RIP Configuration Example.........................................................................................................	759
44 Remote Monitoring (RMON)........................................................................	765
Implementation Information............................................................................................................	765
Fault Recovery...................................................................................................................................	766
Setting the rmon Alarm...............................................................................................................	766
Configuring an RMON Event......................................................................................................	767
Configuring RMON Collection Statistics....................................................................................	768
Configuring the RMON Collection History................................................................................	768
Enabling an RMON MIB Collection History Group....................................................................	769

23

45 Rapid Spanning Tree Protocol (RSTP)........................................................	770
Protocol Overview............................................................................................................................	770
Configuring Rapid Spanning Tree....................................................................................................	770
Related Configuration Tasks.......................................................................................................	770
Important Points to Remember..................................................................................................	771
Configuring Interfaces for Layer 2 Mode..........................................................................................	771
Enabling Rapid Spanning Tree Protocol Globally............................................................................	771
Adding and Removing Interfaces.....................................................................................................	774
Modifying Global Parameters...........................................................................................................	775
Enable BPDU Filtering Globally.........................................................................................................	776
Modifying Interface Parameters........................................................................................................	777
Configuring an EdgePort..................................................................................................................	778
Influencing RSTP Root Selection......................................................................................................	779
SNMP Traps for Root Elections and Topology Changes.................................................................	779
Configuring Fast Hellos for Link State Detection............................................................................	779
46 Security............................................................................................................	781
AAA Accounting.................................................................................................................................	781
Configuration Task List for AAA Accounting..............................................................................	781
AAA Authentication...........................................................................................................................	783
Configuration Task List for AAA Authentication........................................................................	784
AAA Authorization.............................................................................................................................	786
Privilege Levels Overview...........................................................................................................	786
Configuration Task List for Privilege Levels................................................................................	787
RADIUS...............................................................................................................................................	791
RADIUS Authentication and Authorization.................................................................................	792
Configuration Task List for RADIUS............................................................................................	793
TACACS+...........................................................................................................................................	796
Configuration Task List for TACACS+........................................................................................	796
Choosing TACACS+ as the Authentication Method..................................................................	796
Monitoring TACACS+..................................................................................................................	798
TACACS+ Remote Authentication and Authorization...............................................................	798
Specifying a TACACS+ Server Host............................................................................................	799
Command Authorization............................................................................................................	799
Protection from TCP Tiny and Overlapping Fragment Attacks......................................................	800
Enabling SCP and SSH......................................................................................................................	800
Using SCP with SSH to Copy a Software Image........................................................................	801
Removing the RSA Host Keys and Zeroizing Storage ..............................................................	802
Configuring When to Re-generate an SSH Key ........................................................................	802
Configuring the SSH Server Key Exchange Algorithm..............................................................	803
Configuring the HMAC Algorithm for the SSH Server...............................................................	803

24

Configuring the SSH Server Cipher List.....................................................................................	804
Secure Shell Authentication.......................................................................................................	805
Troubleshooting SSH..................................................................................................................	807
Telnet................................................................................................................................................	808
VTY Line and Access-Class Configuration......................................................................................	808
VTY Line Local Authentication and Authorization....................................................................	808
VTY Line Remote Authentication and Authorization................................................................	809
VTY MAC-SA Filter Support.........................................................................................................	810
Role-Based Access Control..............................................................................................................	810
Overview of RBAC.......................................................................................................................	811
User Roles....................................................................................................................................	814
AAA Authentication and Authorization for Roles.......................................................................	817
Role Accounting.........................................................................................................................	820
Display Information About User Roles.......................................................................................	822
47 Service Provider Bridging.............................................................................	824
VLAN Stacking...................................................................................................................................	824
Important Points to Remember.................................................................................................	825
Configure VLAN Stacking...........................................................................................................	826
Creating Access and Trunk Ports...............................................................................................	826
Enable VLAN-Stacking for a VLAN.............................................................................................	827
Configuring the Protocol Type Value for the Outer VLAN Tag................................................	827
Configuring Options for Trunk Ports.........................................................................................	828
Debugging VLAN Stacking..........................................................................................................	829
VLAN Stacking in Multi-Vendor Networks.................................................................................	829
VLAN Stacking Packet Drop Precedence.........................................................................................	833
Enabling Drop Eligibility..............................................................................................................	833
Honoring the Incoming DEI Value.............................................................................................	834
Marking Egress Packets with a DEI Value..................................................................................	834
Dynamic Mode CoS for VLAN Stacking...........................................................................................	835
Mapping C-Tag to S-Tag dot1p Values.....................................................................................	836
Layer 2 Protocol Tunneling..............................................................................................................	837
Implementation Information......................................................................................................	839
Enabling Layer 2 Protocol Tunneling........................................................................................	840
Specifying a Destination MAC Address for BPDUs....................................................................	840
Setting Rate-Limit BPDUs..........................................................................................................	840
Debugging Layer 2 Protocol Tunneling.....................................................................................	841
Provider Backbone Bridging.............................................................................................................	841
48 sFlow................................................................................................................	842
Overview...........................................................................................................................................	842
Implementation Information............................................................................................................	842

25

Important Points to Remember.................................................................................................	843
Enabling and Disabling sFlow...........................................................................................................	843
Enabling and Disabling sFlow on an Interface...........................................................................	843
Enabling sFlow Max-Header Size Extended....................................................................................	844
sFlow Show Commands...................................................................................................................	845
Displaying Show sFlow Global...................................................................................................	845
Displaying Show sFlow on an Interface.....................................................................................	846
Displaying Show sFlow on a Stack Unit.....................................................................................	846
Configuring Specify Collectors........................................................................................................	846
Changing the Polling Intervals.........................................................................................................	847
Changing the Sampling Rate............................................................................................................	847
Sub-Sampling.............................................................................................................................	848
Back-Off Mechanism.......................................................................................................................	848
sFlow on LAG ports..........................................................................................................................	849
Enabling Extended sFlow.................................................................................................................	849
49 Simple Network Management Protocol (SNMP)......................................	851
Implementation Information............................................................................................................	851
Configuration Task List for SNMP...............................................................................................	851
Important Points to Remember.................................................................................................	852
SNMPv3 Compliance With FIPS.......................................................................................................	852
Set up SNMP......................................................................................................................................	853
Creating a Community...............................................................................................................	854
Setting Up User-Based Security (SNMPv3)......................................................................................	854
Reading Managed Object Values.....................................................................................................	856
Writing Managed Object Values.......................................................................................................	857
Configuring Contact and Location Information using SNMP.........................................................	857
Subscribing to Managed Object Value Updates using SNMP.........................................................	858
Enabling a Subset of SNMP Traps....................................................................................................	859
Enabling an SNMP Agent to Notify Syslog Server Failure................................................................	861
Copy Configuration Files Using SNMP............................................................................................	862
Copying a Configuration File...........................................................................................................	864
Copying Configuration Files via SNMP............................................................................................	865
Copying the Startup-Config Files to the Running-Config..............................................................	866
Copying the Startup-Config Files to the Server via FTP.................................................................	866
Copying the Startup-Config Files to the Server via TFTP................................................................	867
Copying a Binary File to the Startup-Configuration........................................................................	867
Additional MIB Objects to View Copy Statistics..............................................................................	868
MIB Support to Display the Available Memory Size on Flash..........................................................	869
Viewing the Available Flash Memory Size..................................................................................	869
MIB Support to Display the Software Core Files Generated by the System..................................	869
Viewing the Software Core Files Generated by the System......................................................	870

26

Obtaining a Value for MIB Objects...................................................................................................	870
Manage VLANs using SNMP..............................................................................................................	871
Creating a VLAN...........................................................................................................................	871
Assigning a VLAN Alias.................................................................................................................	871
Displaying the Ports in a VLAN...................................................................................................	872
Add Tagged and Untagged Ports to a VLAN..............................................................................	873
Enabling and Disabling a Port using SNMP......................................................................................	874
Fetch Dynamic MAC Entries using SNMP........................................................................................	875
Deriving Interface Indices.................................................................................................................	877
Monitor Port-Channels.....................................................................................................................	878
BMP Functionality Using SNMP SET.................................................................................................	879
Entity MIBS........................................................................................................................................	880
Physical Entity.............................................................................................................................	880
Containment Tree......................................................................................................................	880
Troubleshooting SNMP Operation...................................................................................................	881
50 Stacking...........................................................................................................	882
Stacking MXL 10/40GbE Switches...................................................................................................	882
Stack Management Roles...........................................................................................................	883
Stack Master Election.................................................................................................................	884
Failover Roles..............................................................................................................................	885
MAC Addressing..........................................................................................................................	885
Stacking LAG...............................................................................................................................	885
Supported Stacking Topologies.................................................................................................	885
Stack Group/Port Numbers..............................................................................................................	887
Configuring a Switch Stack..............................................................................................................	888
Stacking Prerequisites.................................................................................................................	888
Master Selection Criteria............................................................................................................	889
Configuring Priority and stack-group........................................................................................	889
Cabling Stacked Switches..........................................................................................................	890
Accessing the CLI........................................................................................................................	891
Configuring and Bringing Up a Stack.........................................................................................	891
Removing a Switch from a Stack...............................................................................................	894
Adding a Stack Unit.....................................................................................................................	895
Merging Two Stacks...................................................................................................................	896
Splitting a Stack...........................................................................................................................	896
Managing Redundant Stack Management.................................................................................	896
Resetting a Unit on a Stack.........................................................................................................	897
Verify a Stack Configuration.............................................................................................................	897
Using Show Commands.............................................................................................................	898
Troubleshooting a Switch Stack......................................................................................................	900
Failure Scenarios...............................................................................................................................	902

27

Stack Member FailsUnplugged Stacking CableMaster Switch FailsStack-Link Flapping
ErrorMaster Switch Recovers from FailureStack Unit in Card-Problem State Due to
Incorrect Dell Networking OS VersionStack Unit in Card-Problem State Due to
Configuration Mismatch.............................................................................................................	902
Upgrading a Switch Stack.................................................................................................................	905
Upgrading a Single Stack Unit..........................................................................................................	906
51 Storm Control.................................................................................................	908
Configure Storm Control.................................................................................................................	908
Configuring Storm Control from INTERFACE Mode.................................................................	908
Configuring Storm Control from CONFIGURATION Mode......................................................	908
52 Spanning Tree Protocol (STP).....................................................................	909
Protocol Overview............................................................................................................................	909
Configure Spanning Tree.................................................................................................................	909
Related Configuration Tasks......................................................................................................	909
Important Points to Remember..................................................................................................	910
Configuring Interfaces for Layer 2 Mode.........................................................................................	911
Enabling Spanning Tree Protocol Globally......................................................................................	912
Adding an Interface to the Spanning Tree Group............................................................................	915
Removing an Interface from the Spanning Tree Group..................................................................	915
Modifying Global Parameters...........................................................................................................	915
Modifying Interface STP Parameters................................................................................................	916
Enabling PortFast...............................................................................................................................	917
Prevent Network Disruptions with BPDU Guard........................................................................	918
Global BPDU Filtering.......................................................................................................................	920
Interface BPDU Filtering.............................................................................................................	920
Selecting STP Root............................................................................................................................	921
STP Root Guard................................................................................................................................	922
Root Guard Scenario..................................................................................................................	922
Configuring Root Guard.............................................................................................................	923
SNMP Traps for Root Elections and Topology Changes................................................................	924
Displaying STP Guard Configuration...............................................................................................	924
53 System Time and Date...................................................................................	925
Network Time Protocol....................................................................................................................	925
Protocol Overview......................................................................................................................	926
Configure the Network Time Protocol......................................................................................	927
Enabling NTP...............................................................................................................................	927
Configuring NTP Broadcasts......................................................................................................	928
Disabling NTP on an Interface....................................................................................................	928
Configuring a Source IP Address for NTP Packets....................................................................	928

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Configuring NTP Authentication................................................................................................	929
Dell Networking OS Time and Date.................................................................................................	931
Configuration Task List ...............................................................................................................	931
Set Daylight Saving Time............................................................................................................	933
54 Tunneling .......................................................................................................	936
Configuring a Tunnel........................................................................................................................	936
Configuring Tunnel keepalive..........................................................................................................	937
Configuring the ip and ipv6 unnumbered.......................................................................................	938
Configuring the Tunnel allow-remote............................................................................................	938
Configuring the Tunnel Source Anylocal........................................................................................	939
55 Uplink Failure Detection (UFD)...................................................................	940
Feature Description..........................................................................................................................	940
How Uplink Failure Detection Works...............................................................................................	941
UFD and NIC Teaming......................................................................................................................	942
Important Points to Remember.......................................................................................................	943
Configuring Uplink Failure Detection..............................................................................................	943
Clearing a UFD-Disabled Interface..................................................................................................	945
Displaying Uplink Failure Detection.................................................................................................	946
Sample Configuration: Uplink Failure Detection............................................................................	948
56 Upgrade Procedures.....................................................................................	950
Get Help with Upgrades...................................................................................................................	950
57 Virtual LANs (VLANs)......................................................................................	951
Default VLAN.....................................................................................................................................	951
Port-Based VLANs.......................................................................................................................	952
VLANs and Port Tagging.............................................................................................................	953
Configuration Task List...............................................................................................................	953
Configuring Native VLANs..........................................................................................................	957
Enabling Null VLAN as the Default VLAN.........................................................................................	958
58 Virtual Link Trunking (VLT)..........................................................................	959
Overview...........................................................................................................................................	959
Multi-domain VLT.......................................................................................................................	960
VLT Terminology...............................................................................................................................	961
Configure Virtual Link Trunking........................................................................................................	961
Important Points to Remember.................................................................................................	962
Configuration Notes...................................................................................................................	962
RSTP and VLT..............................................................................................................................	966
VLT Bandwidth Monitoring.........................................................................................................	967

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VLT and IGMP Snooping.............................................................................................................	967
VLT Port Delayed Restoration....................................................................................................	967
PIM-Sparse Mode Support on VLT.............................................................................................	968
VLT Multicast...............................................................................................................................	969
VLT Unicast Routing...................................................................................................................	970
Non-VLT ARP Sync......................................................................................................................	971
RSTP Configuration...........................................................................................................................	972
Preventing Forwarding Loops in a VLT Domain........................................................................	972
Sample RSTP Configuration........................................................................................................	972
Configuring VLT..........................................................................................................................	973
Configuring a VLT Interconnect.................................................................................................	973
Configuring a VLT Backup Link..................................................................................................	974
Configuring a VLT Port Delay Period.........................................................................................	975
Reconfiguring the Default VLT Settings (Optional) ...................................................................	975
Connecting a VLT Domain to an Attached Access Device (Switch or Server).........................	976
Configuring a VLT VLAN Peer-Down (Optional)........................................................................	977
Configure Multi-domain VLT (mVLT) (Optional)........................................................................	977
Verifying a VLT Configuration....................................................................................................	980
Connecting a VLT Domain.........................................................................................................	983
PVST+ Configuration........................................................................................................................	988
Sample PVST+ Configuration.....................................................................................................	988
mVLT Configuration Example..........................................................................................................	989
In Domain 1, configure the VLT domain and VLTi on Peer 1Configure mVLT on Peer 1Add
links to the mVLT port-channel on Peer 1Next, configure the VLT domain and VLTi on
Peer 2Configure mVLT on Peer 2Add links to the mVLT port-channel on Peer 2In
Domain 2, configure the VLT domain and VLTi on Peer 3Configure mVLT on Peer 3Add
links to the mVLT port-channel on Peer 3Configure the VLT domain and VLTi on Peer
4Configure mVLT on Peer 4Add links to the mVLT port-channel on Peer 4..........................	990
PIM-Sparse Mode Configuration Example.......................................................................................	991
Additional VLT Sample Configurations............................................................................................	992
Configuring Virtual Link Trunking (VLT Peer 1)Configuring Virtual Link Trunking (VLT Peer
2)Verifying a Port-Channel Connection to a VLT Domain (From an Attached Access
Switch).........................................................................................................................................	992
Troubleshooting VLT........................................................................................................................	994
Specifying VLT Nodes in a PVLAN...................................................................................................	996
Association of VLTi as a Member of a PVLAN............................................................................	997
MAC Synchronization for VLT Nodes in a PVLAN.....................................................................	998
PVLAN Operations When One VLT Peer is Down.....................................................................	998
PVLAN Operations When a VLT Peer is Restarted.....................................................................	998
Interoperation of VLT Nodes in a PVLAN with ARP Requests...................................................	998
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN.......	999
Configuring a VLT VLAN or LAG in a PVLAN.................................................................................	1000

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