Dell S6000-ON User Manual

Dell Configuration Guide for the S6000–ON
System

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................................................................................................. 34

Audience..............................................................................................................................................34

Conventions........................................................................................................................................ 34

Related Documents............................................................................................................................ 34

2 Configuration Fundamentals........................................................................... 36

Accessing the Command Line............................................................................................................36

CLI Modes............................................................................................................................................36

Navigating CLI Modes................................................................................................................... 38

The do Command............................................................................................................................... 41

Undoing Commands...........................................................................................................................42

Obtaining Help.................................................................................................................................... 43

Entering and Editing Commands....................................................................................................... 43

Command History...............................................................................................................................44

Filtering show Command Outputs.....................................................................................................44

Multiple Users in Configuration Mode............................................................................................... 46

3 Getting Started....................................................................................................47

Console Access................................................................................................................................... 47

Serial Console................................................................................................................................47

Default Configuration......................................................................................................................... 49

Configuring a Host Name...................................................................................................................49

Accessing the System Remotely........................................................................................................ 49

Accessing the System Remotely...................................................................................................49

Configure the Management Port IP Address............................................................................... 49

Configure a Management Route..................................................................................................50

Configuring a Username and Password.......................................................................................50

Configuring the Enable Password.......................................................................................................51

Configuration File Management......................................................................................................... 51

Copy Files to and from the System...............................................................................................51

Mounting an NFS File System....................................................................................................... 52

Save the Running-Configuration..................................................................................................54

Configure the Overload Bit for a Startup Scenario...................................................................... 55

Viewing Files.................................................................................................................................. 55

Managing the File System...................................................................................................................56

View Command History......................................................................................................................57

Upgrading Dell Networking OS.......................................................................................................... 57

Using HTTP for File Transfers..............................................................................................................57

3

Using Hashes to Validate Software Images........................................................................................58

4 Management....................................................................................................... 60

Configuring Privilege Levels............................................................................................................... 60

Creating a Custom Privilege Level............................................................................................... 60

Removing a Command from EXEC Mode................................................................................... 60

Moving a Command from EXEC Privilege Mode to EXEC Mode................................................ 61

Allowing Access to CONFIGURATION Mode Commands...........................................................61

Allowing Access to the Following Modes.....................................................................................61

Applying a Privilege Level to a Username.................................................................................... 63

Applying a Privilege Level to a Terminal Line...............................................................................63

Configuring Logging...........................................................................................................................63

Audit and Security Logs................................................................................................................ 64

Configuring Logging Format ...................................................................................................... 66

Setting Up a Secure Connection to a Syslog Server....................................................................67

Log Messages in the Internal Buffer...................................................................................................68

Configuration Task List for System Log Management................................................................ 68

Disabling System Logging.................................................................................................................. 68

Sending System Messages to a Syslog Server................................................................................... 69

Configuring a UNIX System as a Syslog Server............................................................................69

Track Login Activity.............................................................................................................................69

Restrictions for Tracking Login Activity........................................................................................69

Configuring Login Activity Tracking............................................................................................. 70

Display Login Statistics..................................................................................................................70

Limit Concurrent Login Sessions........................................................................................................ 71

Restrictions for Limiting the Number of Concurrent Sessions.................................................... 71

Configuring Concurrent Session Limit..........................................................................................71

Enabling the System to Clear Existing Sessions........................................................................... 72

Changing System Logging Settings....................................................................................................73

Display the Logging Buffer and the Logging Configuration..............................................................74

Configuring a UNIX Logging Facility Level.........................................................................................74

Synchronizing Log Messages..............................................................................................................76

Enabling Timestamp on Syslog Messages..........................................................................................76

File Transfer Services........................................................................................................................... 77

Configuration Task List for File Transfer Services........................................................................ 77

Enabling the FTP Server.................................................................................................................77

Configuring FTP Server Parameters..............................................................................................78

Configuring FTP Client Parameters.............................................................................................. 78

Terminal Lines..................................................................................................................................... 79

Denying and Permitting Access to a Terminal Line..................................................................... 79

Configuring Login Authentication for Terminal Lines.................................................................80

Setting Time Out of EXEC Privilege Mode..........................................................................................81

4

Using Telnet to get to Another Network Device............................................................................... 82

Lock CONFIGURATION Mode............................................................................................................83

Viewing the Configuration Lock Status........................................................................................83

Restoring the Factory Default Settings.............................................................................................. 84

Important Points to Remember....................................................................................................84

Restoring Factory Default Environment Variables.......................................................................84

5 802.1X................................................................................................................... 87

The Port-Authentication Process.......................................................................................................88

EAP over RADIUS...........................................................................................................................90

Configuring 802.1X.............................................................................................................................90

Related Configuration Tasks.........................................................................................................90

Important Points to Remember..........................................................................................................91

Enabling 802.1X...................................................................................................................................92

Configuring Request Identity Re-Transmissions............................................................................... 93

Configuring a Quiet Period after a Failed Authentication........................................................... 94

Forcibly Authorizing or Unauthorizing a Port.................................................................................... 95

Re-Authenticating a Port....................................................................................................................96

Configuring Timeouts......................................................................................................................... 97

Configuring Dynamic VLAN Assignment with Port Authentication..................................................98

Guest and Authentication-Fail VLANs................................................................................................99

Configuring a Guest VLAN..........................................................................................................100

Configuring an Authentication-Fail VLAN..................................................................................100

6 Access Control Lists (ACLs)............................................................................ 102

IP Access Control Lists (ACLs).......................................................................................................... 102

CAM Usage.................................................................................................................................. 103

Implementing ACLs on Dell Networking OS............................................................................. 104

Important Points to Remember........................................................................................................105

Configuration Task List for Route Maps.....................................................................................105

Configuring Match Routes..........................................................................................................108

Configuring Set Conditions........................................................................................................ 109

Configure a Route Map for Route Redistribution....................................................................... 111

Configure a Route Map for Route Tagging.................................................................................111

Continue Clause.......................................................................................................................... 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

5

Configuring Filters Without a Sequence Number...................................................................... 118

Configure Layer 2 and Layer 3 ACLs.................................................................................................119

Assign an IP ACL to an Interface.......................................................................................................119

Applying an IP ACL............................................................................................................................120

Counting ACL Hits....................................................................................................................... 121

Configure Ingress ACLs..................................................................................................................... 121

Configure Egress ACLs......................................................................................................................122

Applying Egress Layer 3 ACLs (Control-Plane).......................................................................... 122

IP Prefix Lists......................................................................................................................................123

Implementation Information.......................................................................................................123

Configuration Task List for Prefix Lists....................................................................................... 123

ACL Resequencing............................................................................................................................ 127

Resequencing an ACL or Prefix List............................................................................................128

Route Maps........................................................................................................................................129

Implementation Information...................................................................................................... 130

Flow-Based Monitoring Support for ACLs.......................................................................................130

Behavior of Flow-Based Monitoring...........................................................................................130

Enabling Flow-Based Monitoring............................................................................................... 132

7 Bidirectional Forwarding Detection (BFD)...................................................134

How BFD Works................................................................................................................................ 134

BFD Packet Format......................................................................................................................135

BFD Sessions................................................................................................................................137

BFD Three-Way Handshake........................................................................................................ 137

Session State Changes................................................................................................................ 138

Important Points to Remember........................................................................................................139

Configure BFD...................................................................................................................................139

Configure BFD for Physical Ports............................................................................................... 140

Configure BFD for Static Routes.................................................................................................143

Configure BFD for OSPF............................................................................................................. 145

Configure BFD for OSPFv3......................................................................................................... 148

Configure BFD for IS-IS...............................................................................................................149

Configure BFD for BGP................................................................................................................151

Configure BFD for VRRP............................................................................................................. 158

Configuring Protocol Liveness....................................................................................................161

Troubleshooting BFD.................................................................................................................. 162

8 Border Gateway Protocol IPv4 (BGPv4)...................................................... 164

Autonomous Systems (AS)................................................................................................................164

Sessions and Peers............................................................................................................................166

Establish a Session.......................................................................................................................167

Route Reflectors................................................................................................................................168

6

BGP Attributes................................................................................................................................... 169

Best Path Selection Criteria........................................................................................................ 169

Weight...........................................................................................................................................171

Local Preference..........................................................................................................................172

Multi-Exit Discriminators (MEDs)................................................................................................ 172

Origin............................................................................................................................................173

AS Path......................................................................................................................................... 174

Next Hop......................................................................................................................................174

Multiprotocol BGP.............................................................................................................................175

Implement BGP with Dell Networking OS....................................................................................... 175

Additional Path (Add-Path) Support............................................................................................175

Advertise IGP Cost as MED for Redistributed Routes................................................................ 176

Ignore Router-ID for Some Best-Path Calculations.................................................................. 177

Four-Byte AS Numbers................................................................................................................177

AS4 Number Representation.......................................................................................................177

AS Number Migration.................................................................................................................. 179

BGP4 Management Information Base (MIB)...............................................................................181

Important Points to Remember.................................................................................................. 181

Configuration Information................................................................................................................182

BGP Configuration............................................................................................................................ 182

Enabling BGP...............................................................................................................................183

Configuring AS4 Number Representations................................................................................ 187

Configuring Peer Groups............................................................................................................189

Configuring BGP Fast Fall-Over..................................................................................................191

Configuring Passive Peering....................................................................................................... 193

Maintaining Existing AS Numbers During an AS Migration........................................................194

Allowing an AS Number to Appear in its Own AS Path..............................................................195

Enabling Graceful Restart........................................................................................................... 196

Enabling Neighbor Graceful Restart........................................................................................... 197

Filtering on an AS-Path Attribute................................................................................................198

Regular Expressions as Filters..................................................................................................... 199

Redistributing Routes..................................................................................................................201

Enabling Additional Paths........................................................................................................... 201

Configuring IP Community Lists................................................................................................ 202

Configuring an IP Extended Community List............................................................................ 203

Filtering Routes with Community Lists......................................................................................204

Manipulating the COMMUNITY Attribute.................................................................................. 205

Changing MED Attributes........................................................................................................... 207

Changing the LOCAL_PREFERENCE Attribute.......................................................................... 207

Changing the NEXT_HOP Attribute...........................................................................................208

Changing the WEIGHT Attribute................................................................................................208

Enabling Multipath......................................................................................................................209

7

Filtering BGP Routes...................................................................................................................209

Filtering BGP Routes Using Route Maps.....................................................................................211

Filtering BGP Routes Using AS-PATH Information.....................................................................211

Configuring BGP Route Reflectors.............................................................................................212

Aggregating Routes.....................................................................................................................213

Configuring BGP Confederations...............................................................................................213

Enabling Route Flap Dampening................................................................................................ 214

Changing BGP Timers................................................................................................................. 217

Enabling BGP Neighbor Soft-Reconfiguration...........................................................................217

Route Map Continue...................................................................................................................218

Enabling MBGP Configurations........................................................................................................ 219

BGP Regular Expression Optimization.............................................................................................220

Debugging BGP................................................................................................................................ 220

Storing Last and Bad PDUs..........................................................................................................221

Capturing PDUs...........................................................................................................................222

PDU Counters............................................................................................................................. 223

Sample Configurations..................................................................................................................... 224

9 Content Addressable Memory (CAM)...........................................................230

CAM Allocation................................................................................................................................. 230

Test CAM Usage................................................................................................................................232

View CAM Profiles.............................................................................................................................232

View CAM-ACL Settings................................................................................................................... 233

View CAM Usage...............................................................................................................................235

CAM Optimization............................................................................................................................ 236

Troubleshoot CAM Profiling.............................................................................................................236

CAM Profile Mismatches.............................................................................................................236

QoS CAM Region Limitation.......................................................................................................236

Syslog Error When the Table is Full............................................................................................ 237

Syslog Warning Upon 90 Percent Utilization of CAM............................................................... 237

Syslog Warning for Discrepancies Between Configured Extended Prefixes............................ 237

Unified Forwarding Table (UFT) Modes............................................................................................237

Configuring UFT Modes..............................................................................................................238

10 Control Plane Policing (CoPP).....................................................................239

Configure Control Plane Policing....................................................................................................240

Configuring CoPP for Protocols.................................................................................................241

Configuring CoPP for CPU Queues...........................................................................................243

Show Commands....................................................................................................................... 244

11 Data Center Bridging (DCB)..........................................................................246

Ethernet Enhancements in Data Center Bridging........................................................................... 246

8

Priority-Based Flow Control....................................................................................................... 247

Enhanced Transmission Selection............................................................................................. 249

Data Center Bridging Exchange Protocol (DCBx)..................................................................... 250

Data Center Bridging in a Traffic Flow.......................................................................................250

Enabling Data Center Bridging......................................................................................................... 251

DCB Maps and its Attributes........................................................................................................251

Data Center Bridging: Default Configuration.................................................................................. 252

Configuring Priority-Based Flow Control........................................................................................ 253

Configuring Lossless Queues.....................................................................................................254

Configuring PFC in a DCB Map........................................................................................................ 255

PFC Configuration Notes............................................................................................................255

PFC Prerequisites and Restrictions.............................................................................................257

Applying a DCB Map on a Port......................................................................................................... 257

Configuring PFC without a DCB Map.............................................................................................. 257

Configuring Lossless QueuesExample:......................................................................................258

Priority-Based Flow Control Using Dynamic Buffer Method......................................................... 260

Pause and Resume of Traffic......................................................................................................260

Buffer Sizes for Lossless or PFC Packets................................................................................... 260

Behavior of Tagged Packets............................................................................................................. 261

Configuration Example for DSCP and PFC Priorities...................................................................... 262

SNMP Support for PFC and Buffer Statistics Tracking.....................................................................262

Performing PFC Using DSCP Bits Instead of 802.1p Bits................................................................ 263

PFC and ETS Configuration Examples.............................................................................................264

Using PFC to Manage Converged Ethernet Traffic......................................................................... 264

Operations on Untagged Packets....................................................................................................264

Generation of PFC for a Priority for Untagged Packets.................................................................. 265

Configure Enhanced Transmission Selection..................................................................................265

ETS Prerequisites and Restrictions............................................................................................. 265

Creating an ETS Priority Group.................................................................................................. 266

ETS Operation with DCBx...........................................................................................................267

Configuring Bandwidth Allocation for DCBx CIN..................................................................... 268

Configuring ETS in a DCB Map.................................................................................................. 269

Hierarchical Scheduling in ETS Output Policies.............................................................................. 270

Using ETS to Manage Converged Ethernet Traffic.......................................................................... 271

Applying DCB Policies in a Switch Stack.......................................................................................... 271

Configure a DCBx Operation............................................................................................................271

DCBx Operation.......................................................................................................................... 272

DCBx Port Roles..........................................................................................................................272

DCB Configuration Exchange.................................................................................................... 274

Configuration Source Election................................................................................................... 274

Propagation of DCB Information................................................................................................275

Auto-Detection and Manual Configuration of the DCBx Version............................................ 275

9

DCBx Example.............................................................................................................................276

DCBx Prerequisites and Restrictions.......................................................................................... 276

Configuring DCBx....................................................................................................................... 277

Verifying the DCB Configuration......................................................................................................281

QoS dot1p Traffic Classification and Queue Assignment...............................................................292

Configuring the Dynamic Buffer Method........................................................................................ 293

Sample DCB Configuration..............................................................................................................294

PFC and ETS Configuration Command Examples.....................................................................295

12 Dynamic Host Configuration Protocol (DHCP)........................................296

DHCP Packet Format and Options.................................................................................................. 296

Assign an IP Address using DHCP....................................................................................................298

Implementation Information............................................................................................................299

Configure the System to be a DHCP Server....................................................................................300

Configuring the Server for Automatic Address Allocation........................................................300

Specifying a Default Gateway.....................................................................................................302

Configure a Method of Hostname Resolution.......................................................................... 302

Using DNS for Address Resolution.............................................................................................302

Using NetBIOS WINS for Address Resolution............................................................................302

Creating Manual Binding Entries................................................................................................303

Debugging the DHCP Server......................................................................................................303

Using DHCP Clear Commands.................................................................................................. 303

Configure the System to be a DHCP Client.................................................................................... 304

Configuring the DHCP Client System........................................................................................304

DHCP Client on a Management Interface.................................................................................306

DHCP Client Operation with Other Features.............................................................................307

Configure the System for User Port Stacking (Option 230)........................................................... 308

Configure Secure DHCP.................................................................................................................. 308

Option 82....................................................................................................................................308

DHCP Snooping..........................................................................................................................309

Drop DHCP Packets on Snooped VLANs Only.......................................................................... 313

Dynamic ARP Inspection.............................................................................................................313

Configuring Dynamic ARP Inspection........................................................................................314

Source Address Validation................................................................................................................ 315

Enabling IP Source Address Validation.......................................................................................316

DHCP MAC Source Address Validation...................................................................................... 316

Enabling IP+MAC Source Address Validation.............................................................................317

Viewing the Number of SAV Dropped Packets.......................................................................... 317

Clearing the Number of SAV Dropped Packets......................................................................... 318

13 Equal Cost Multi-Path (ECMP)......................................................................319

ECMP for Flow-Based Affinity...........................................................................................................319

10

Configuring the Hash Algorithm.................................................................................................319

Enabling Deterministic ECMP Next Hop.................................................................................... 319

Configuring the Hash Algorithm Seed.......................................................................................320

Link Bundle Monitoring.................................................................................................................... 320

Managing ECMP Group Paths.....................................................................................................321

Creating an ECMP Group Bundle...............................................................................................322

Modifying the ECMP Group Threshold...................................................................................... 322

Support for /128 IPv6 and /32 IPv4 Prefixes in Layer 3 Host Table and LPM Table.................323

Support for ECMP in host table..................................................................................................323

Support for moving /128 IPv6 Prefixes and /32 IPv4 Prefixes ..................................................324

14 FCoE Transit.................................................................................................... 325

Fibre Channel over Ethernet.............................................................................................................325

Ensure Robustness in a Converged Ethernet Network................................................................... 325

FIP Snooping on Ethernet Bridges................................................................................................... 327

FIP Snooping in a Switch Stack........................................................................................................ 329

Using FIP Snooping...........................................................................................................................329

FIP Snooping Prerequisites.........................................................................................................329

Important Points to Remember................................................................................................. 330

Enabling the FCoE Transit Feature..............................................................................................331

Enable FIP Snooping on VLANs.................................................................................................. 331

Configure the FC-MAP Value......................................................................................................331

Configure a Port for a Bridge-to-Bridge Link............................................................................ 332

Configure a Port for a Bridge-to-FCF Link................................................................................ 332

Impact on Other Software Features...........................................................................................332

FIP Snooping Restrictions...........................................................................................................333

Configuring FIP Snooping...........................................................................................................333

Displaying FIP Snooping Information.............................................................................................. 334

FCoE Transit Configuration Example...............................................................................................340

15 Flex Hash and Optimized Boot-Up............................................................. 342

Flex Hash Capability Overview......................................................................................................... 342

Configuring the Flex Hash Mechanism............................................................................................342

Configuring Fast Boot and LACP Fast Switchover.......................................................................... 343

Optimizing the Boot Time................................................................................................................343

Booting Process When Optimized Boot Time Mechanism is Enabled.....................................344

Guidelines for Configuring Optimized Booting Mechanism.................................................... 344

Interoperation of Applications with Fast Boot and System States..................................................345

LACP and IPv4 Routing...............................................................................................................345

LACP and IPv6 Routing...............................................................................................................346

BGP Graceful Restart.................................................................................................................. 346

Cold Boot Caused by Power Cycling the System..................................................................... 346

11

Unexpected Reload of the System.............................................................................................347

Software Upgrade....................................................................................................................... 347

LACP Fast Switchover................................................................................................................. 347

Changes to BGP Multipath......................................................................................................... 347

Delayed Installation of ECMP Routes Into BGP.........................................................................347

RDMA Over Converged Ethernet (RoCE) Overview........................................................................348

Preserving 802.1Q VLAN Tag Value for Lite Subinterfaces.............................................................349

16 Force10 Resilient Ring Protocol (FRRP).....................................................350

Protocol Overview............................................................................................................................350

Ring Status................................................................................................................................... 351

Multiple FRRP Rings.................................................................................................................... 352

Important FRRP Points................................................................................................................352

Important FRRP Concepts.......................................................................................................... 353

Implementing FRRP.......................................................................................................................... 354

FRRP Configuration.......................................................................................................................... 354

Creating the FRRP Group............................................................................................................355

Configuring the Control VLAN................................................................................................... 355

Configuring and Adding the Member VLANs.............................................................................356

Setting the FRRP Timers............................................................................................................. 358

Clearing the FRRP Counters.......................................................................................................358

Viewing the FRRP Configuration................................................................................................358

Viewing the FRRP Information................................................................................................... 358

Troubleshooting FRRP......................................................................................................................359

Configuration Checks.................................................................................................................359

Sample Configuration and Topology...............................................................................................359

17 GARP VLAN Registration Protocol (GVRP).................................................361

Important Points to Remember........................................................................................................361

Configure GVRP................................................................................................................................362

Related Configuration Tasks.......................................................................................................363

Enabling GVRP Globally....................................................................................................................363

Enabling GVRP on a Layer 2 Interface............................................................................................. 363

Configure GVRP Registration...........................................................................................................364

Configure a GARP Timer.................................................................................................................. 364

18 Internet Group Management Protocol (IGMP).........................................366

IGMP Implementation Information..................................................................................................366

IGMP Protocol Overview..................................................................................................................366

IGMP Version 2............................................................................................................................366

IGMP Version 3............................................................................................................................368

Configure IGMP.................................................................................................................................371

12

Related Configuration Tasks....................................................................................................... 371

Viewing IGMP Enabled Interfaces.................................................................................................... 372

Selecting an IGMP Version................................................................................................................372

Viewing IGMP Groups.......................................................................................................................373

Adjusting Timers................................................................................................................................373

Adjusting Query and Response Timers...................................................................................... 373

Enabling IGMP Immediate-Leave.....................................................................................................374

IGMP Snooping................................................................................................................................. 374

IGMP Snooping Implementation Information........................................................................... 375

Configuring IGMP Snooping.......................................................................................................375

Removing a Group-Port Association..........................................................................................375

Disabling Multicast Flooding.......................................................................................................376

Specifying a Port as Connected to a Multicast Router..............................................................376

Configuring the Switch as Querier.............................................................................................376

Fast Convergence after MSTP Topology Changes..........................................................................377

Egress Interface Selection (EIS) for HTTP and IGMP Applications.................................................. 377

Protocol Separation.................................................................................................................... 378

Enabling and Disabling Management Egress Interface Selection.............................................379

Handling of Management Route Configuration........................................................................380

Handling of Switch-Initiated Traffic........................................................................................... 381

Handling of Switch-Destined Traffic..........................................................................................382

Handling of Transit Traffic (Traffic Separation)..........................................................................382

Mapping of Management Applications and Traffic Type.......................................................... 383

Behavior of Various Applications for Switch-Initiated Traffic .................................................. 384

Behavior of Various Applications for Switch-Destined Traffic .................................................385

Interworking of EIS With Various Applications.......................................................................... 386

Designating a Multicast Router Interface........................................................................................ 386

19 Interfaces......................................................................................................... 387

Basic Interface Configuration...........................................................................................................387

Advanced Interface Configuration...................................................................................................387

Interface Types................................................................................................................................. 388

View Basic Interface Information.....................................................................................................388

Enabling a Physical Interface........................................................................................................... 390

Physical Interfaces.............................................................................................................................391

Configuration Task List for Physical Interfaces.......................................................................... 391

40G to 1G Breakout Cable Adaptor............................................................................................391

Overview of Layer Modes........................................................................................................... 392

Configuring Layer 2 (Data Link) Mode....................................................................................... 392

Configuring Layer 2 (Interface) Mode........................................................................................ 393

Configuring Layer 3 (Network) Mode.........................................................................................393

Configuring Layer 3 (Interface) Mode........................................................................................394

13

Egress Interface Selection (EIS)........................................................................................................394

Important Points to Remember................................................................................................. 395

Configuring EIS........................................................................................................................... 395

Management Interfaces....................................................................................................................395

Configuring Management Interfaces......................................................................................... 395

Configuring Management Interfaces on the S-Series...............................................................396

VLAN Interfaces.................................................................................................................................397

Loopback Interfaces.........................................................................................................................398

Null Interfaces...................................................................................................................................398

Port Channel Interfaces....................................................................................................................398

Port Channel Definition and Standards..................................................................................... 399

Port Channel Benefits.................................................................................................................399

Port Channel Implementation....................................................................................................399

10/100/1000 Mbps Interfaces in Port Channels....................................................................... 400

Configuration Tasks for Port Channel Interfaces......................................................................400

Creating a Port Channel............................................................................................................. 401

Adding a Physical Interface to a Port Channel.......................................................................... 401

Reassigning an Interface to a New Port Channel......................................................................403

Configuring the Minimum Oper Up Links in a Port Channel....................................................404

.....................................................................................................................................................404

Assigning an IP Address to a Port Channel................................................................................405

Deleting or Disabling a Port Channel........................................................................................ 405

Load Balancing Through Port Channels....................................................................................405

Load-Balancing Method.............................................................................................................406

Changing the Hash Algorithm....................................................................................................406

Bulk Configuration........................................................................................................................... 408

Interface Range...........................................................................................................................408

Bulk Configuration Examples.....................................................................................................408

Defining Interface Range Macros.....................................................................................................410

Define the Interface Range.........................................................................................................410

Choosing an Interface-Range Macro.........................................................................................410

Monitoring and Maintaining Interfaces.............................................................................................411

Maintenance Using TDR..............................................................................................................412

Fanning out 40G Ports Dynamically.................................................................................................413

Splitting QSFP Ports to SFP+ Ports...................................................................................................413

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................ 413

Important Points to Remember..................................................................................................414

Example Scenarios...................................................................................................................... 414

Link Dampening................................................................................................................................ 416

Important Points to Remember..................................................................................................416

Enabling Link Dampening...........................................................................................................416

Link Bundle Monitoring.....................................................................................................................418

14

Using Ethernet Pause Frames for Flow Control.............................................................................. 418

Enabling Pause Frames............................................................................................................... 419

Configure the MTU Size on an Interface.........................................................................................420

Port-Pipes..........................................................................................................................................421

Auto-Negotiation on Ethernet Interfaces........................................................................................ 421

Setting the Speed and Duplex Mode of Ethernet Interfaces..................................................... 421

Set Auto-Negotiation Options................................................................................................... 423

View Advanced Interface Information............................................................................................. 424

Configuring the Interface Sampling Size................................................................................... 425

Dynamic Counters............................................................................................................................426

Clearing Interface Counters.......................................................................................................426

Enhanced Validation of Interface Ranges........................................................................................427

Compressing Configuration Files.....................................................................................................427

20 IPv4 Routing....................................................................................................431

IP Addresses.......................................................................................................................................431

Implementation Information...................................................................................................... 431

Configuration Tasks for IP Addresses.............................................................................................. 432

Assigning IP Addresses to an Interface............................................................................................ 432

Configuring Static Routes.................................................................................................................433

Configure Static Routes for the Management Interface.................................................................435

Using the Configured Source IP Address in ICMP Messages..........................................................435

Configuring the ICMP Source Interface.....................................................................................435

Configuring the Duration to Establish a TCP Connection..............................................................436

Enabling Directed Broadcast............................................................................................................436

Resolution of Host Names................................................................................................................437

Enabling Dynamic Resolution of Host Names.................................................................................437

Specifying the Local System Domain and a List of Domains..........................................................438

Configuring DNS with Traceroute................................................................................................... 438

ARP.................................................................................................................................................... 439

Configuration Tasks for ARP............................................................................................................ 439

Configuring Static ARP Entries.........................................................................................................440

Enabling Proxy ARP.......................................................................................................................... 440

Clearing ARP Cache..........................................................................................................................441

ARP Learning via Gratuitous ARP......................................................................................................441

Enabling ARP Learning via Gratuitous ARP......................................................................................442

ARP Learning via ARP Request......................................................................................................... 442

Configuring ARP Retries................................................................................................................... 443

ICMP..................................................................................................................................................444

Configuration Tasks for ICMP..........................................................................................................444

Enabling ICMP Unreachable Messages........................................................................................... 444

UDP Helper....................................................................................................................................... 444

15

Configure UDP Helper................................................................................................................444

Important Points to Remember................................................................................................. 445

Enabling UDP Helper........................................................................................................................445

Configuring a Broadcast Address.....................................................................................................445

Configurations Using UDP Helper................................................................................................... 446

UDP Helper with Broadcast-All Addresses......................................................................................446

UDP Helper with Subnet Broadcast Addresses............................................................................... 447

UDP Helper with Configured Broadcast Addresses........................................................................448

UDP Helper with No Configured Broadcast Addresses..................................................................448

Troubleshooting UDP Helper...........................................................................................................449

21 IPv6 Routing....................................................................................................450

Protocol Overview............................................................................................................................450

Extended Address Space............................................................................................................ 450

Stateless Autoconfiguration....................................................................................................... 450

IPv6 Headers................................................................................................................................451

Longest Prefix Match (LPM) Table and IPv6 /65 – /128 support.............................................. 452

IPv6 Header Fields.......................................................................................................................453

Extension Header Fields..............................................................................................................455

Addressing...................................................................................................................................456

Implementing IPv6 with Dell Networking OS..................................................................................457

ICMPv6..............................................................................................................................................459

Path MTU Discovery.........................................................................................................................460

IPv6 Neighbor Discovery..................................................................................................................460

IPv6 Neighbor Discovery of MTU Packets................................................................................. 461

Configuring the IPv6 Recursive DNS Server.............................................................................. 461

Debugging IPv6 RDNSS Information Sent to the Host ............................................................ 462

Displaying IPv6 RDNSS Information...........................................................................................463

Secure Shell (SSH) Over an IPv6 Transport..................................................................................... 464

Configuration Tasks for IPv6............................................................................................................464

Adjusting Your CAM-Profile....................................................................................................... 464

Assigning an IPv6 Address to an Interface.................................................................................465

Assigning a Static IPv6 Route..................................................................................................... 465

Configuring Telnet with IPv6..................................................................................................... 466

SNMP over IPv6.......................................................................................................................... 466

Showing IPv6 Information.......................................................................................................... 467

Showing an IPv6 Interface..........................................................................................................467

Showing IPv6 Routes..................................................................................................................468

Showing the Running-Configuration for an Interface..............................................................469

Clearing IPv6 Routes...................................................................................................................470

Configuring IPv6 RA Guard.............................................................................................................. 470

Configuring IPv6 RA Guard on an Interface...............................................................................472

16

Monitoring IPv6 RA Guard.......................................................................................................... 473

22 iSCSI Optimization.........................................................................................474

iSCSI Optimization Overview........................................................................................................... 474

Monitoring iSCSI Traffic Flows................................................................................................... 476

Application of Quality of Service to iSCSI Traffic Flows............................................................ 477

Information Monitored in iSCSI Traffic Flows............................................................................ 477

Detection and Auto-Configuration for Dell EqualLogic Arrays................................................ 478

Configuring Detection and Ports for Dell Compellent Arrays.................................................. 478

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer........................................479

Enable and Disable iSCSI Optimization......................................................................................479

Default iSCSI Optimization Values...................................................................................................480

iSCSI Optimization Prerequisites......................................................................................................481

Configuring iSCSI Optimization....................................................................................................... 481

Displaying iSCSI Optimization Information..................................................................................... 483

23 Intermediate System to Intermediate System..........................................485

IS-IS Protocol Overview................................................................................................................... 485

IS-IS Addressing................................................................................................................................485

Multi-Topology IS-IS........................................................................................................................ 486

Transition Mode.......................................................................................................................... 487

Interface Support........................................................................................................................ 487

Adjacencies................................................................................................................................. 487

Graceful Restart................................................................................................................................ 487

Timers..........................................................................................................................................488

Implementation Information............................................................................................................488

Configuration Information............................................................................................................... 489

Configuration Tasks for IS-IS..................................................................................................... 489

Configuring the Distance of a Route......................................................................................... 498

Changing the IS-Type.................................................................................................................498

Redistributing IPv4 Routes..........................................................................................................501

Redistributing IPv6 Routes..........................................................................................................502

Configuring Authentication Passwords..................................................................................... 503

Setting the Overload Bit............................................................................................................. 504

Debugging IS-IS..........................................................................................................................504

IS-IS Metric Styles............................................................................................................................. 506

Configure Metric Values...................................................................................................................506

Maximum Values in the Routing Table...................................................................................... 506

Change the IS-IS Metric Style in One Level Only......................................................................506

Leaks from One Level to Another.............................................................................................. 508

Sample Configurations.....................................................................................................................509

17

24 Link Aggregation Control Protocol (LACP)............................................... 512

Introduction to Dynamic LAGs and LACP........................................................................................512

Important Points to Remember..................................................................................................512

LACP Modes.................................................................................................................................513

Configuring LACP Commands....................................................................................................513

LACP Configuration Tasks................................................................................................................ 514

Creating a LAG.............................................................................................................................514

Configuring the LAG Interfaces as Dynamic.............................................................................. 515

Setting the LACP Long Timeout................................................................................................. 515

Monitoring and Debugging LACP...............................................................................................516

Shared LAG State Tracking............................................................................................................... 516

Configuring Shared LAG State Tracking..................................................................................... 517

Important Points about Shared LAG State Tracking.................................................................. 518

LACP Basic Configuration Example..................................................................................................519

Configure a LAG on ALPHA........................................................................................................ 519

25 Layer 2.............................................................................................................. 527

Manage the MAC Address Table.......................................................................................................527

Clearing the MAC Address Table................................................................................................ 527

Setting the Aging Time for Dynamic Entries.............................................................................. 527

Configuring a Static MAC Address............................................................................................. 528

Displaying the MAC Address Table.............................................................................................528

MAC Learning Limit.......................................................................................................................... 528

Setting the MAC Learning Limit..................................................................................................529

mac learning-limit Dynamic.......................................................................................................529

mac learning-limit mac-address-sticky.....................................................................................530

mac learning-limit station-move............................................................................................... 530

mac learning-limit no-station-move.........................................................................................530

Learning Limit Violation Actions................................................................................................. 531

Setting Station Move Violation Actions.......................................................................................531

Recovering from Learning Limit and Station Move Violations..................................................532

NIC Teaming..................................................................................................................................... 532

Configure Redundant Pairs.............................................................................................................. 534

Important Points about Configuring Redundant Pairs.............................................................. 535

Far-End Failure Detection.................................................................................................................537

FEFD State Changes....................................................................................................................538

Configuring FEFD........................................................................................................................539

Enabling FEFD on an Interface...................................................................................................540

Debugging FEFD..........................................................................................................................541

26 Link Layer Discovery Protocol (LLDP)........................................................543

18

802.1AB (LLDP) Overview.................................................................................................................543

Protocol Data Units.....................................................................................................................543

Optional TLVs....................................................................................................................................544

Management TLVs...................................................................................................................... 545

TIA-1057 (LLDP-MED) Overview...................................................................................................... 547

TIA Organizationally Specific TLVs............................................................................................. 547

Configure LLDP.................................................................................................................................552

Related Configuration Tasks.......................................................................................................552

Important Points to Remember..................................................................................................552

LLDP Compatibility......................................................................................................................552

CONFIGURATION versus INTERFACE Configurations....................................................................552

Enabling LLDP................................................................................................................................... 553

Disabling and Undoing LLDP......................................................................................................553

Enabling LLDP on Management Ports............................................................................................. 553

Disabling and Undoing LLDP on Management Ports................................................................554

Advertising TLVs................................................................................................................................554

Viewing the LLDP Configuration......................................................................................................555

Viewing Information Advertised by Adjacent LLDP Agents.............................................................556

Configuring LLDPDU Intervals..........................................................................................................557

Configuring Transmit and Receive Mode........................................................................................ 558

Configuring a Time to Live............................................................................................................... 559

Debugging LLDP...............................................................................................................................559

Relevant Management Objects........................................................................................................560

27 Microsoft Network Load Balancing............................................................ 567

NLB Unicast Mode Scenario.............................................................................................................567

NLB Multicast Mode Scenario.......................................................................................................... 568

Limitations of the NLB Feature.........................................................................................................568

Microsoft Clustering......................................................................................................................... 568

Enable and Disable VLAN Flooding .................................................................................................569

Configuring a Switch for NLB ..........................................................................................................569

..................................................................................................................................................... 569

28 Multicast Source Discovery Protocol (MSDP)........................................... 571

Protocol Overview.............................................................................................................................571

Anycast RP.........................................................................................................................................573

Implementation Information............................................................................................................ 573

Configure Multicast Source Discovery Protocol............................................................................. 573

Related Configuration Tasks.......................................................................................................574

Enable MSDP.....................................................................................................................................578

Manage the Source-Active Cache................................................................................................... 579

Viewing the Source-Active Cache..............................................................................................579

19

Limiting the Source-Active Cache.............................................................................................580

Clearing the Source-Active Cache............................................................................................ 580

Enabling the Rejected Source-Active Cache............................................................................ 580

Accept Source-Active Messages that Fail the RFP Check.............................................................. 580

Specifying Source-Active Messages................................................................................................ 584

Limiting the Source-Active Messages from a Peer......................................................................... 585

Preventing MSDP from Caching a Local Source.............................................................................585

Preventing MSDP from Caching a Remote Source.........................................................................586

Preventing MSDP from Advertising a Local Source.........................................................................587

Logging Changes in Peership States................................................................................................588

Terminating a Peership.....................................................................................................................588

Clearing Peer Statistics..................................................................................................................... 589

Debugging MSDP..............................................................................................................................589

MSDP with Anycast RP..................................................................................................................... 590

Configuring Anycast RP.................................................................................................................... 591

Reducing Source-Active Message Flooding..............................................................................592

Specifying the RP Address Used in SA Messages.......................................................................592

MSDP Sample Configurations.......................................................................................................... 595

29 Multiple Spanning Tree Protocol (MSTP).................................................. 598

Protocol Overview............................................................................................................................598

Spanning Tree Variations..................................................................................................................599

Implementation Information......................................................................................................599

Configure Multiple Spanning Tree Protocol....................................................................................599

Related Configuration Tasks...................................................................................................... 599

Enable Multiple Spanning Tree Globally..........................................................................................600

Adding and Removing Interfaces.....................................................................................................600

Creating Multiple Spanning Tree Instances..................................................................................... 601

Influencing MSTP Root Selection.................................................................................................... 602

Interoperate with Non-Dell Networking OS Bridges......................................................................603

Changing the Region Name or Revision......................................................................................... 603

Modifying Global Parameters...........................................................................................................604

Modifying the Interface Parameters................................................................................................ 605

Configuring an EdgePort................................................................................................................. 606

Flush MAC Addresses after a Topology Change............................................................................. 607

MSTP Sample Configurations...........................................................................................................607

Router 1 Running-ConfigurationRouter 2 Running-ConfigurationRouter 3 Running-

ConfigurationSFTOS Example Running-Configuration............................................................608

Debugging and Verifying MSTP Configurations...............................................................................611

30 Multicast Features..........................................................................................614

Enabling IP Multicast.........................................................................................................................614

20

Implementation Information............................................................................................................ 614

Multicast Policies...............................................................................................................................615

IPv4 Multicast Policies.................................................................................................................615

31 Object Tracking.............................................................................................. 623

Object Tracking Overview................................................................................................................623

Track Layer 2 Interfaces..............................................................................................................624

Track Layer 3 Interfaces..............................................................................................................624

Track IPv4 and IPv6 Routes........................................................................................................ 625

Set Tracking Delays.....................................................................................................................626

VRRP Object Tracking.................................................................................................................626

Object Tracking Configuration........................................................................................................ 626

Tracking a Layer 2 Interface....................................................................................................... 627

Tracking a Layer 3 Interface....................................................................................................... 628

Track an IPv4/IPv6 Route........................................................................................................... 629

Displaying Tracked Objects..............................................................................................................633

32 Open Shortest Path First (OSPFv2 and OSPFv3)...................................... 636

Protocol Overview............................................................................................................................636

Autonomous System (AS) Areas................................................................................................. 636

Area Types................................................................................................................................... 637

Networks and Neighbors............................................................................................................638

Router Types............................................................................................................................... 638

Designated and Backup Designated Routers............................................................................ 640

Link-State Advertisements (LSAs)...............................................................................................640

Router Priority and Cost............................................................................................................. 642

OSPF with Dell Networking OS........................................................................................................643

Graceful Restart.......................................................................................................................... 643

Fast Convergence (OSPFv2, IPv4 Only)..................................................................................... 644

Multi-Process OSPFv2 with VRF.................................................................................................645

RFC-2328 Compliant OSPF Flooding........................................................................................ 645

OSPF ACK Packing......................................................................................................................646

Setting OSPF Adjacency with Cisco Routers.............................................................................646

Configuration Information............................................................................................................... 647

Configuration Task List for OSPFv2 (OSPF for IPv4)..................................................................647

Configuration Task List for OSPFv3 (OSPF for IPv6)....................................................................... 663

Enabling IPv6 Unicast Routing................................................................................................... 664

Assigning IPv6 Addresses on an Interface................................................................................. 664

Assigning Area ID on an Interface..............................................................................................665

Assigning OSPFv3 Process ID and Router ID Globally.............................................................. 665

Assigning OSPFv3 Process ID and Router ID to a VRF..............................................................666

Configuring Stub Areas...............................................................................................................666

21

Configuring Passive-Interface....................................................................................................666

Redistributing Routes..................................................................................................................667

Configuring a Default Route.......................................................................................................667

Enabling OSPFv3 Graceful Restart............................................................................................. 668

OSPFv3 Authentication Using IPsec...........................................................................................670

Troubleshooting OSPFv3............................................................................................................ 677

33 Policy-based Routing (PBR)......................................................................... 679

Overview........................................................................................................................................... 679

Implementing Policy-based Routing with Dell Networking OS.....................................................680

Configuration Task List for Policy-based Routing...........................................................................681

PBR Exceptions (Permit)..............................................................................................................681

Create a Redirect List..................................................................................................................682

Create a Rule for a Redirect-list.................................................................................................682

Apply a Redirect-list to an Interface using a Redirect-group...................................................684

Sample Configuration...................................................................................................................... 686

34 PIM Sparse-Mode (PIM-SM).........................................................................688

Implementation Information............................................................................................................688

Protocol Overview............................................................................................................................688

Requesting Multicast Traffic.......................................................................................................688

Refuse Multicast Traffic.............................................................................................................. 689

Send Multicast Traffic................................................................................................................. 689

Configuring PIM-SM.........................................................................................................................690

Related Configuration Tasks...................................................................................................... 690

Enable PIM-SM................................................................................................................................. 690

Configuring S,G Expiry Timers..........................................................................................................691

Configuring a Static Rendezvous Point........................................................................................... 692

Overriding Bootstrap Router Updates....................................................................................... 693

Configuring a Designated Router.................................................................................................... 693

Creating Multicast Boundaries and Domains..................................................................................694

35 PIM Source-Specific Mode (PIM-SSM)....................................................... 695

Implementation Information............................................................................................................695

Important Points to Remember................................................................................................. 695

Configure PIM-SMM.........................................................................................................................696

Related Configuration Tasks...................................................................................................... 696

Enabling PIM-SSM............................................................................................................................ 696

Use PIM-SSM with IGMP Version 2 Hosts....................................................................................... 696

Configuring PIM-SSM with IGMPv2........................................................................................... 697

36 Port Monitoring..............................................................................................699

22

Important Points to Remember.......................................................................................................699

Port Monitoring.................................................................................................................................700

Configuring Port Monitoring............................................................................................................ 701

Configuring Monitor Multicast Queue.............................................................................................703

Enabling Flow-Based Monitoring.....................................................................................................704

Remote Port Mirroring......................................................................................................................705

Remote Port Mirroring Example.................................................................................................705

Configuring Remote Port Mirroring...........................................................................................706

Displaying Remote-Port Mirroring Configurations................................................................... 708

Configuring the Sample Remote Port Mirroring....................................................................... 708

Configuring the Encapsulated Remote Port Mirroring....................................................................712

Changes to Default BehaviorConfiguration steps for ERPM .................................................... 712

ERPM Behavior on a typical Dell Networking OS ........................................................................... 714

Decapsulation of ERPM packets at the Destination IP/ Analyzer..............................................714

37 Per-VLAN Spanning Tree Plus (PVST+).......................................................716

Protocol Overview.............................................................................................................................716

Implementation Information.............................................................................................................717

Configure Per-VLAN Spanning Tree Plus......................................................................................... 717

Related Configuration Tasks....................................................................................................... 717

Enabling PVST+..................................................................................................................................717

Disabling PVST+................................................................................................................................ 718

Influencing PVST+ Root Selection................................................................................................... 718

Modifying Global PVST+ Parameters...............................................................................................720

Modifying Interface PVST+ Parameters............................................................................................721

Configuring an EdgePort.................................................................................................................. 722

PVST+ in Multi-Vendor Networks.................................................................................................... 723

Enabling PVST+ Extend System ID...................................................................................................723

PVST+ Sample Configurations......................................................................................................... 724

38 Quality of Service (QoS)................................................................................726

Implementation Information............................................................................................................728

Port-Based QoS Configurations.......................................................................................................729

Setting dot1p Priorities for Incoming Traffic..............................................................................729

Honoring dot1p Priorities on Ingress Traffic..............................................................................729

Configuring Port-Based Rate Policing....................................................................................... 730

Configuring Port-Based Rate Shaping........................................................................................731

Policy-Based QoS Configurations....................................................................................................732

Classify Traffic............................................................................................................................. 732

Dot1p to Queue Mapping Requirement.....................................................................................736

Create a QoS Policy.................................................................................................................... 737

DSCP Color Maps........................................................................................................................739

23

Create Policy Maps......................................................................................................................741

Enabling QoS Rate Adjustment........................................................................................................ 746

Enabling Strict-Priority Queueing.................................................................................................... 746

Queue Classification Requirements for PFC Functionality............................................................. 747

Support for marking dot1p value in L3 Input Qos Policy................................................................ 747

Weighted Random Early Detection..................................................................................................748

Creating WRED Profiles.............................................................................................................. 749

Applying a WRED Profile to Traffic.............................................................................................749

Displaying Default and Configured WRED Profiles....................................................................750

Displaying WRED Drop Statistics................................................................................................750

Displaying egress-queue Statistics.............................................................................................750

Pre-Calculating Available QoS CAM Space......................................................................................751

Specifying Policy-Based Rate Shaping in Packets Per Second....................................................... 752

Configuring Policy-Based Rate Shaping.......................................................................................... 753

Configuring Weights and ECN for WRED ....................................................................................... 753

Global Service Pools With WRED and ECN Settings..................................................................754

Configuring WRED and ECN Attributes........................................................................................... 756

Guidelines for Configuring ECN for Classifying and Color-Marking Packets................................ 757

Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class.......... 757

Classifying Incoming Packets Using ECN and Color-Marking..................................................758

Sample configuration to mark non-ecn packets as “yellow” with single traffic class............. 760

Applying Layer 2 Match Criteria on a Layer 3 Interface...................................................................761

Managing Hardware Buffer Statistics......................................................................................... 762

Enabling Buffer Statistics Tracking .................................................................................................. 762

39 Routing Information Protocol (RIP)........................................................... 766

Protocol Overview............................................................................................................................766

RIPv1............................................................................................................................................ 766

RIPv2............................................................................................................................................ 767

Implementation Information............................................................................................................ 767

Configuration Information................................................................................................................767

Configuration Task List............................................................................................................... 767

RIP Configuration Example.........................................................................................................775

40 Remote Monitoring (RMON)........................................................................781

Implementation Information............................................................................................................ 781

Fault Recovery................................................................................................................................... 781

Setting the rmon Alarm...............................................................................................................782

Configuring an RMON Event...................................................................................................... 783

Configuring RMON Collection Statistics....................................................................................784

Configuring the RMON Collection History................................................................................784

24

41 Rapid Spanning Tree Protocol (RSTP)........................................................786

Protocol Overview............................................................................................................................786

Configuring Rapid Spanning Tree....................................................................................................786

Related Configuration Tasks.......................................................................................................786

Important Points to Remember........................................................................................................787

RSTP and VLT.............................................................................................................................. 787

Configuring Interfaces for Layer 2 Mode.........................................................................................787

Enabling Rapid Spanning Tree Protocol Globally............................................................................788

Adding and Removing Interfaces.....................................................................................................790

Modifying Global Parameters........................................................................................................... 791

Enabling SNMP Traps for Root Elections and Topology Changes........................................... 792

Modifying Interface Parameters....................................................................................................... 792

Enabling SNMP Traps for Root Elections and Topology Changes................................................. 793

Influencing RSTP Root Selection......................................................................................................793

Configuring an EdgePort.................................................................................................................. 793

Configuring Fast Hellos for Link State Detection............................................................................ 794

42 Software-Defined Networking (SDN).........................................................796

43 Security............................................................................................................ 797

AAA Accounting................................................................................................................................ 797

Configuration Task List for AAA Accounting..............................................................................797

AAA Authentication...........................................................................................................................799

Configuration Task List for AAA Authentication........................................................................800

Obscuring Passwords and Keys....................................................................................................... 802

AAA Authorization.............................................................................................................................803

Privilege Levels Overview........................................................................................................... 803

Configuration Task List for Privilege Levels...............................................................................804

RADIUS..............................................................................................................................................808

RADIUS Authentication...............................................................................................................808

Configuration Task List for RADIUS........................................................................................... 809

TACACS+...........................................................................................................................................812

Configuration Task List for TACACS+........................................................................................ 812

TACACS+ Remote Authentication............................................................................................. 814

Command Authorization............................................................................................................ 815

Protection from TCP Tiny and Overlapping Fragment Attacks...................................................... 816

Enabling SCP and SSH...................................................................................................................... 816

Using SCP with SSH to Copy a Software Image.........................................................................817

Removing the RSA Host Keys and Zeroizing Storage ............................................................... 817

Configuring When to Re-generate an SSH Key ........................................................................ 817

Configuring the SSH Server Key Exchange Algorithm...............................................................818

25

Configuring the HMAC Algorithm for the SSH Server............................................................... 819

Configuring the SSH Server Cipher List......................................................................................819

Secure Shell Authentication....................................................................................................... 820

Troubleshooting SSH..................................................................................................................823

Telnet.................................................................................................................................................823

VTY Line and Access-Class Configuration...................................................................................... 823

VTY Line Local Authentication and Authorization.....................................................................824

VTY Line Remote Authentication and Authorization.................................................................825

VTY MAC-SA Filter Support........................................................................................................ 825

Role-Based Access Control............................................................................................................. 826

Overview of RBAC.......................................................................................................................826

User Roles................................................................................................................................... 829

AAA Authentication and Authorization for Roles.......................................................................833

Role Accounting......................................................................................................................... 836

Display Information About User Roles....................................................................................... 837

44 Service Provider Bridging.............................................................................839

VLAN Stacking...................................................................................................................................839

Important Points to Remember.................................................................................................840

Configure VLAN Stacking............................................................................................................841

Creating Access and Trunk Ports............................................................................................... 841

Enable VLAN-Stacking for a VLAN............................................................................................. 842

Configuring the Protocol Type Value for the Outer VLAN Tag................................................ 842

Configuring Dell Networking OS Options for Trunk Ports....................................................... 843

Debugging VLAN Stacking......................................................................................................... 844

VLAN Stacking in Multi-Vendor Networks.................................................................................844

VLAN Stacking Packet Drop Precedence........................................................................................ 848

Enabling Drop Eligibility..............................................................................................................848

Honoring the Incoming DEI Value.............................................................................................849

Marking Egress Packets with a DEI Value.................................................................................. 850

Dynamic Mode CoS for VLAN Stacking...........................................................................................850

Mapping C-Tag to S-Tag dot1p Values......................................................................................852

Layer 2 Protocol Tunneling..............................................................................................................852

Implementation Information......................................................................................................854

Enabling Layer 2 Protocol Tunneling.........................................................................................855

Specifying a Destination MAC Address for BPDUs.................................................................... 855

Setting Rate-Limit BPDUs...........................................................................................................855

Debugging Layer 2 Protocol Tunneling.....................................................................................856

Provider Backbone Bridging.............................................................................................................856

45 sFlow.................................................................................................................857

Overview............................................................................................................................................857

26

Implementation Information............................................................................................................857

Important Points to Remember................................................................................................. 858

Enabling Extended sFlow................................................................................................................. 858

Enabling and Disabling sFlow on an Interface................................................................................ 859

Enabling sFlow Max-Header Size Extended.................................................................................... 859

sFlow Show Commands.................................................................................................................. 860

Displaying Show sFlow Global....................................................................................................861

Displaying Show sFlow on an Interface..................................................................................... 861

Displaying Show sFlow on a Stack-unit.....................................................................................862

Configuring Specify Collectors........................................................................................................862

Changing the Polling Intervals......................................................................................................... 863

Back-Off Mechanism........................................................................................................................863

sFlow on LAG ports.......................................................................................................................... 863

Enabling Extended sFlow................................................................................................................. 863

Important Points to Remember................................................................................................. 864

46 Simple Network Management Protocol (SNMP)..................................... 866

Protocol Overview............................................................................................................................866

Implementation Information............................................................................................................866

SNMPv3 Compliance With FIPS....................................................................................................... 866

Configuration Task List for SNMP....................................................................................................868

Related Configuration Tasks...................................................................................................... 868

Important Points to Remember.......................................................................................................868

Set up SNMP..................................................................................................................................... 868

Creating a Community...............................................................................................................869

Setting Up User-Based Security (SNMPv3)................................................................................ 869

Reading Managed Object Values......................................................................................................871

Writing Managed Object Values....................................................................................................... 871

Configuring Contact and Location Information using SNMP.........................................................872

Subscribing to Managed Object Value Updates using SNMP......................................................... 873

Enabling a Subset of SNMP Traps.................................................................................................... 874

Enabling an SNMP Agent to Notify Syslog Server Failure............................................................... 876

Copy Configuration Files Using SNMP.............................................................................................877

Copying a Configuration File......................................................................................................879

Copying Configuration Files via SNMP......................................................................................880

Copying the Startup-Config Files to the Running-Config........................................................880

Copying the Startup-Config Files to the Server via FTP............................................................881

Copying the Startup-Config Files to the Server via TFTP..........................................................881

Copy a Binary File to the Startup-Configuration.......................................................................882

Additional MIB Objects to View Copy Statistics........................................................................ 882

Obtaining a Value for MIB Objects.............................................................................................883

MIB Support to Display the Available Memory Size on Flash......................................................... 884

27

Viewing the Available Flash Memory Size..................................................................................884

MIB Support to Display the Software Core Files Generated by the System.................................. 884

Viewing the Software Core Files Generated by the System......................................................885

Manage VLANs using SNMP............................................................................................................. 885

Creating a VLAN..........................................................................................................................886

Assigning a VLAN Alias................................................................................................................886

Displaying the Ports in a VLAN...................................................................................................886

Add Tagged and Untagged Ports to a VLAN............................................................................. 886

Managing Overload on Startup........................................................................................................ 887

Enabling and Disabling a Port using SNMP..................................................................................... 888

Fetch Dynamic MAC Entries using SNMP........................................................................................889

Deriving Interface Indices................................................................................................................ 890

Monitor Port-Channels.....................................................................................................................891

Troubleshooting SNMP Operation.................................................................................................. 892

47 Storm Control.................................................................................................894

Configure Storm Control................................................................................................................. 894

Configuring Storm Control from INTERFACE Mode.................................................................894

Configuring Storm Control from CONFIGURATION Mode......................................................894

48 Spanning Tree Protocol (STP)..................................................................... 895

Protocol Overview............................................................................................................................895

Configure Spanning Tree................................................................................................................. 895

Related Configuration Tasks...................................................................................................... 895

Important Points to Remember.......................................................................................................896

Configuring Interfaces for Layer 2 Mode.........................................................................................897

Enabling Spanning Tree Protocol Globally......................................................................................898

Adding an Interface to the Spanning Tree Group...........................................................................900

Modifying Global Parameters........................................................................................................... 901

Modifying Interface STP Parameters................................................................................................902

Enabling PortFast..............................................................................................................................903

Prevent Network Disruptions with BPDU Guard.......................................................................903

Selecting STP Root........................................................................................................................... 906

STP Root Guard................................................................................................................................ 906

Root Guard Scenario.................................................................................................................. 907

Configuring Root Guard.............................................................................................................908

Enabling SNMP Traps for Root Elections and Topology Changes.................................................908

Configuring Spanning Trees as Hitless............................................................................................909

STP Loop Guard................................................................................................................................909

Configuring Loop Guard.............................................................................................................910

Displaying STP Guard Configuration................................................................................................ 911

28

49 System Time and Date...................................................................................913

Network Time Protocol.................................................................................................................... 913

Protocol Overview...................................................................................................................... 914

Configure the Network Time Protocol.......................................................................................915

Enabling NTP............................................................................................................................... 915

Configuring NTP Broadcasts.......................................................................................................915

Disabling NTP on an Interface....................................................................................................916

Configuring a Source IP Address for NTP Packets.................................................................... 916

Configuring NTP Authentication.................................................................................................917

Dell Networking OS Time and Date.................................................................................................920

Configuration Task List ..............................................................................................................920

Setting the Time and Date for the Switch Software Clock....................................................... 920

Setting the Timezone................................................................................................................. 920

Set Daylight Saving Time.............................................................................................................921

Setting Daylight Saving Time Once............................................................................................ 921

Setting Recurring Daylight Saving Time.....................................................................................922

50 Tunneling........................................................................................................ 924

Configuring a Tunnel........................................................................................................................924

Configuring Tunnel Keepalive Settings............................................................................................925

Configuring a Tunnel Interface........................................................................................................926

Configuring Tunnel Allow-Remote Decapsulation.........................................................................926

Configuring Tunnel source anylocal Decapsulation.......................................................................927

Guidelines for Configuring Multipoint Receive-Only Tunnels........................................................927

Multipoint Receive-Only Type and IP Unnumbered Interfaces for Tunnels..................................928

51 Upgrade Procedures......................................................................................929

Get Help with Upgrades................................................................................................................... 929

52 Virtual LANs (VLANs)......................................................................................930

Default VLAN.....................................................................................................................................930

Port-Based VLANs.............................................................................................................................931

VLANs and Port Tagging...................................................................................................................932

Configuration Task List.....................................................................................................................932

Creating a Port-Based VLAN...................................................................................................... 932

Assigning Interfaces to a VLAN...................................................................................................933

Moving Untagged Interfaces...................................................................................................... 935

Assigning an IP Address to a VLAN.............................................................................................936

Configuring Native VLANs................................................................................................................936

Enabling Null VLAN as the Default VLAN......................................................................................... 937

29

53 VLT Proxy Gateway........................................................................................938

Proxy Gateway in VLT Domains.......................................................................................................938

Guidelines for Enabling the VLT Proxy Gateway....................................................................... 939

Enabling the VLT Proxy Gateway...............................................................................................940

LLDP Organizational TLV for Proxy Gateway............................................................................940

Sample Configuration for a VLT Proxy Gateway....................................................................... 942

Configuring a Static VLT Proxy Gateway.........................................................................................943

Configuring an LLDP VLT Proxy Gateway....................................................................................... 943

54 Virtual Link Trunking (VLT).......................................................................... 945

Overview........................................................................................................................................... 945

VLT on Core Switches................................................................................................................ 946

Enhanced VLT.............................................................................................................................946

VLT Terminology...............................................................................................................................947

Configure Virtual Link Trunking....................................................................................................... 948

Important Points to Remember................................................................................................. 948

Configuration Notes...................................................................................................................949

Primary and Secondary VLT Peers............................................................................................. 953

RSTP and VLT.............................................................................................................................. 953

VLT Bandwidth Monitoring.........................................................................................................953

VLT and IGMP Snooping.............................................................................................................954

VLT IPv6.......................................................................................................................................954

VLT Port Delayed Restoration.................................................................................................... 954

PIM-Sparse Mode Support on VLT.............................................................................................955

VLT Routing ................................................................................................................................956

Non-VLT ARP Sync..................................................................................................................... 959

RSTP Configuration.......................................................................................................................... 959

Preventing Forwarding Loops in a VLT Domain........................................................................959

Sample RSTP Configuration.......................................................................................................960

Configuring VLT..........................................................................................................................960

PVST+ Configuration........................................................................................................................ 972

Sample PVST+ Configuration.....................................................................................................972

eVLT Configuration Example............................................................................................................973

eVLT Configuration Step Examples............................................................................................973

PIM-Sparse Mode Configuration Example.......................................................................................975

Verifying a VLT Configuration.......................................................................................................... 976

Additional VLT Sample Configurations............................................................................................980

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).........................................................................................................................................980

Troubleshooting VLT........................................................................................................................982

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