Dell Configuration Guide for the S4820T
System
9.6(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 © 2014 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and
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2014 - 09
Rev. A00
Contents
1 About this Guide..................................................................................................35
Audience..............................................................................................................................................35
Conventions........................................................................................................................................ 35
Related Documents.............................................................................................................................35
2 Configuration Fundamentals........................................................................... 36
Accessing the Command Line............................................................................................................36
CLI Modes............................................................................................................................................36
Navigating CLI Modes................................................................................................................... 37
The do Command............................................................................................................................... 41
Undoing Commands...........................................................................................................................41
Obtaining Help.................................................................................................................................... 42
Entering and Editing Commands....................................................................................................... 42
Command History...............................................................................................................................43
Filtering show Command Outputs.....................................................................................................44
Multiple Users in Configuration Mode............................................................................................... 45
3 Getting Started....................................................................................................46
Console Access...................................................................................................................................46
Serial Console................................................................................................................................46
Accessing the CLI Interface and Running Scripts Using SSH............................................................ 47
S4820T ..........................................................................................................................................47
Entering CLI commands Using an SSH Connection................................................................... 48
Executing Local CLI Scripts Using an SSH Connection...............................................................48
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......................................................................................................50
Configuration File Management......................................................................................................... 51
Copy Files to and from the System...............................................................................................51
Save the Running-Configuration..................................................................................................52
Configure the Overload Bit for a Startup Scenario...................................................................... 53
Viewing Files.................................................................................................................................. 53
Managing the File System...................................................................................................................54
Enabling Software Features on Devices Using a Command Option................................................ 55
View Command History......................................................................................................................56
Upgrading Dell Networking OS.......................................................................................................... 56
Using HTTP for File Transfers............................................................................................................. 56
Using Hashes to Validate Software Images........................................................................................56
4 Management........................................................................................................59
Configuring Privilege Levels............................................................................................................... 59
Creating a Custom Privilege Level................................................................................................59
Removing a Command from EXEC Mode................................................................................... 59
Moving a Command from EXEC Privilege Mode to EXEC Mode................................................60
Allowing Access to CONFIGURATION Mode Commands..........................................................60
Allowing Access to the Following Modes.................................................................................... 60
Applying a Privilege Level to a Username.................................................................................... 62
Applying a Privilege Level to a Terminal Line...............................................................................62
Configuring Logging...........................................................................................................................62
Audit and Security Logs.................................................................................................................63
Configuring Logging Format ...................................................................................................... 65
Display the Logging Buffer and the Logging Configuration........................................................65
Setting Up a Secure Connection to a Syslog Server....................................................................66
Log Messages in the Internal Buffer................................................................................................... 67
Configuration Task List for System Log Management.................................................................67
Disabling System Logging...................................................................................................................67
Sending System Messages to a Syslog Server................................................................................... 68
Configuring a UNIX System as a Syslog Server............................................................................68
Changing System Logging Settings................................................................................................... 68
Display the Logging Buffer and the Logging Configuration............................................................. 69
Configuring a UNIX Logging Facility Level.........................................................................................70
Synchronizing Log Messages.............................................................................................................. 71
Enabling Timestamp on Syslog Messages.......................................................................................... 71
File Transfer Services...........................................................................................................................72
Configuration Task List for File Transfer Services........................................................................ 72
Enabling the FTP Server.................................................................................................................72
Configuring FTP Server Parameters..............................................................................................73
Configuring FTP Client Parameters.............................................................................................. 73
Terminal Lines..................................................................................................................................... 74
Denying and Permitting Access to a Terminal Line..................................................................... 74
Configuring Login Authentication for Terminal Lines..................................................................75
Setting Time Out of EXEC Privilege Mode......................................................................................... 76
Using Telnet to get to Another Network Device............................................................................... 76
Lock CONFIGURATION Mode............................................................................................................ 77
Viewing the Configuration Lock Status........................................................................................ 77
Recovering from a Forgotten Password on the S4820T System......................................................78
Recovering from a Forgotten Enable Password on the S4820T.................................................79
Recovering from a Failed Start on the S4820T System.....................................................................80
Restoring the Factory Default Settings.............................................................................................. 80
S4820TMXL Switch....................................................................................................................... 80
Important Points to Remember................................................................................................... 80
Restoring Factory Default Environment Variables....................................................................... 81
5 802.1ag................................................................................................................. 83
Ethernet CFM...................................................................................................................................... 83
Maintenance Domains........................................................................................................................84
Maintenance Points............................................................................................................................ 84
Maintenance End Points..................................................................................................................... 85
Implementation Information..............................................................................................................86
Configuring the CFM.......................................................................................................................... 86
Related Configuration Tasks.........................................................................................................86
Enabling Ethernet CFM.......................................................................................................................86
Creating a Maintenance Domain....................................................................................................... 86
Creating a Maintenance Association..................................................................................................87
Create Maintenance Points.................................................................................................................87
Creating a Maintenance End Point...............................................................................................87
Creating a Maintenance Intermediate Point................................................................................88
Displaying the MP Databases........................................................................................................89
Continuity Check Messages............................................................................................................... 90
Enabling CCM................................................................................................................................ 91
Enabling Cross-Checking..............................................................................................................91
Sending Loopback Messages and Responses....................................................................................91
Sending Linktrace Messages and Responses.....................................................................................92
Caching Link Trace........................................................................................................................92
Enabling CFM SNMP Traps................................................................................................................. 93
Displaying Ethernet CFM Statistics..................................................................................................... 95
6 802.1X...................................................................................................................96
The Port-Authentication Process.......................................................................................................97
EAP over RADIUS...........................................................................................................................99
Configuring 802.1X............................................................................................................................. 99
Related Configuration Tasks.........................................................................................................99
Important Points to Remember....................................................................................................... 100
Enabling 802.1X................................................................................................................................ 100
Configuring Request Identity Re-Transmissions............................................................................. 102
Configuring a Quiet Period after a Failed Authentication......................................................... 102
Forcibly Authorizing or Unauthorizing a Port..................................................................................103
Re-Authenticating a Port..................................................................................................................104
Configuring Timeouts.......................................................................................................................105
Configuring Dynamic VLAN Assignment with Port Authentication................................................106
Guest and Authentication-Fail VLANs.............................................................................................. 107
Configuring a Guest VLAN..........................................................................................................108
Configuring an Authentication-Fail VLAN..................................................................................108
7 Access Control List (ACL) VLAN Groups and Content Addressable
Memory (CAM)......................................................................................................110
Optimizing CAM Utilization During the Attachment of ACLs to VLANs..........................................110
Guidelines for Configuring ACL VLAN groups..................................................................................111
Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters.........................112
Configuring ACL VLAN Groups................................................................................................... 112
Configuring FP Blocks for VLAN Parameters..............................................................................113
Viewing CAM Usage.......................................................................................................................... 114
Allocating FP Blocks for VLAN Processes......................................................................................... 115
8 Access Control Lists (ACLs).............................................................................117
IP Access Control Lists (ACLs)...........................................................................................................118
CAM Usage...................................................................................................................................118
Implementing ACLs on Dell Networking OS..............................................................................120
IP Fragment Handling........................................................................................................................121
IP Fragments ACL Examples........................................................................................................121
Layer 4 ACL Rules Examples....................................................................................................... 122
Configure a Standard IP ACL............................................................................................................ 123
Configuring a Standard IP ACL Filter.......................................................................................... 124
Configure an Extended IP ACL......................................................................................................... 125
Configuring Filters with a Sequence Number............................................................................ 125
Configuring Filters Without a Sequence Number......................................................................126
Configure Layer 2 and Layer 3 ACLs.................................................................................................127
Assign an IP ACL to an Interface.......................................................................................................128
Applying an IP ACL............................................................................................................................128
Counting ACL Hits.......................................................................................................................129
Configure Ingress ACLs.....................................................................................................................129
Configure Egress ACLs......................................................................................................................130
Applying Egress Layer 3 ACLs (Control-Plane)...........................................................................131
IP Prefix Lists...................................................................................................................................... 131
Implementation Information.......................................................................................................132
Configuration Task List for Prefix Lists....................................................................................... 132
ACL Resequencing............................................................................................................................ 136
Resequencing an ACL or Prefix List............................................................................................ 137
Route Maps........................................................................................................................................138
Implementation Information...................................................................................................... 138
Important Points to Remember........................................................................................................138
Configuration Task List for Route Maps..................................................................................... 139
Configuring Match Routes.......................................................................................................... 141
Configuring Set Conditions........................................................................................................ 143
Configure a Route Map for Route Redistribution...................................................................... 144
Configure a Route Map for Route Tagging................................................................................144
Continue Clause..........................................................................................................................145
Logging of ACL Processes................................................................................................................ 145
Guidelines for Configuring ACL Logging................................................................................... 146
Configuring ACL Logging............................................................................................................147
Flow-Based Monitoring Support for ACLs....................................................................................... 147
Behavior of Flow-Based Monitoring.......................................................................................... 148
Enabling Flow-Based Monitoring............................................................................................... 149
9 Bidirectional Forwarding Detection (BFD)...................................................151
How BFD Works.................................................................................................................................151
BFD Packet Format......................................................................................................................152
BFD Sessions................................................................................................................................154
BFD Three-Way Handshake........................................................................................................154
Session State Changes................................................................................................................ 155
Important Points to Remember........................................................................................................156
Configure BFD...................................................................................................................................156
Configure BFD for Physical Ports................................................................................................157
Configure BFD for Static Routes................................................................................................ 160
Configure BFD for OSPF............................................................................................................. 162
Configure BFD for OSPFv3..........................................................................................................165
Configure BFD for IS-IS...............................................................................................................166
Configure BFD for BGP...............................................................................................................169
Configure BFD for VRRP..............................................................................................................176
Configuring Protocol Liveness....................................................................................................179
Troubleshooting BFD.................................................................................................................. 179
10 Border Gateway Protocol IPv4 (BGPv4).....................................................181
Autonomous Systems (AS)................................................................................................................ 181
Sessions and Peers............................................................................................................................183
Establish a Session.......................................................................................................................184
Route Reflectors................................................................................................................................184
BGP Attributes................................................................................................................................... 185
Best Path Selection Criteria........................................................................................................ 186
Weight..........................................................................................................................................188
Local Preference......................................................................................................................... 188
Multi-Exit Discriminators (MEDs)................................................................................................189
Origin...........................................................................................................................................190
AS Path......................................................................................................................................... 191
Next Hop...................................................................................................................................... 191
Multiprotocol BGP.............................................................................................................................192
Implement BGP with Dell Networking OS....................................................................................... 192
Additional Path (Add-Path) Support........................................................................................... 192
Advertise IGP Cost as MED for Redistributed Routes................................................................ 192
Ignore Router-ID for Some Best-Path Calculations..................................................................193
Four-Byte AS Numbers............................................................................................................... 193
AS4 Number Representation...................................................................................................... 194
AS Number Migration..................................................................................................................195
BGP4 Management Information Base (MIB)...............................................................................197
Important Points to Remember..................................................................................................197
Configuration Information................................................................................................................198
BGP Configuration............................................................................................................................198
Enabling BGP...............................................................................................................................199
Configuring AS4 Number Representations............................................................................... 203
Configuring Peer Groups............................................................................................................205
Configuring BGP Fast Fall-Over................................................................................................. 207
Configuring Passive Peering.......................................................................................................209
Maintaining Existing AS Numbers During an AS Migration........................................................210
Allowing an AS Number to Appear in its Own AS Path.............................................................. 211
Enabling Graceful Restart............................................................................................................212
Enabling Neighbor Graceful Restart........................................................................................... 213
Filtering on an AS-Path Attribute................................................................................................ 213
Regular Expressions as Filters..................................................................................................... 215
Redistributing Routes.................................................................................................................. 216
Enabling Additional Paths............................................................................................................217
Configuring IP Community Lists.................................................................................................217
Configuring an IP Extended Community List.............................................................................219
Filtering Routes with Community Lists...................................................................................... 220
Manipulating the COMMUNITY Attribute.................................................................................. 220
Changing MED Attributes........................................................................................................... 222
Changing the LOCAL_PREFERENCE Attribute.......................................................................... 222
Changing the NEXT_HOP Attribute........................................................................................... 223
Changing the WEIGHT Attribute................................................................................................ 224
Enabling Multipath...................................................................................................................... 224
Filtering BGP Routes................................................................................................................... 224
Filtering BGP Routes Using Route Maps.................................................................................... 226
Filtering BGP Routes Using AS-PATH Information.................................................................... 227
Configuring BGP Route Reflectors.............................................................................................227
Aggregating Routes.................................................................................................................... 228
Configuring BGP Confederations.............................................................................................. 229
Enabling Route Flap Dampening................................................................................................229
Changing BGP Timers.................................................................................................................232
Enabling BGP Neighbor Soft-Reconfiguration.......................................................................... 232
Route Map Continue...................................................................................................................234
Enabling MBGP Configurations........................................................................................................234
BGP Regular Expression Optimization.............................................................................................235
Debugging BGP.................................................................................................................................235
Storing Last and Bad PDUs......................................................................................................... 236
Capturing PDUs...........................................................................................................................237
PDU Counters............................................................................................................................. 238
Sample Configurations..................................................................................................................... 239
11 Content Addressable Memory (CAM)......................................................... 245
CAM Allocation................................................................................................................................. 245
Test CAM Usage................................................................................................................................247
View CAM Profiles.............................................................................................................................247
View CAM-ACL Settings................................................................................................................... 248
View CAM Usage...............................................................................................................................250
CAM Optimization.............................................................................................................................251
Troubleshoot CAM Profiling............................................................................................................. 251
CAM Profile Mismatches............................................................................................................. 251
QoS CAM Region Limitation....................................................................................................... 251
12 Control Plane Policing (CoPP)..................................................................... 253
Configure Control Plane Policing.................................................................................................... 254
Configuring CoPP for Protocols.................................................................................................255
Configuring CoPP for CPU Queues........................................................................................... 257
CoPP for OSPFv3 Packets...........................................................................................................258
Configuring CoPP for OSPFv3....................................................................................................261
Show Commands....................................................................................................................... 262
13 Data Center Bridging (DCB)......................................................................... 264
Ethernet Enhancements in Data Center Bridging........................................................................... 264
Priority-Based Flow Control.......................................................................................................265
Enhanced Transmission Selection............................................................................................. 266
Data Center Bridging Exchange Protocol (DCBx)..................................................................... 268
Data Center Bridging in a Traffic Flow.......................................................................................269
Enabling Data Center Bridging.........................................................................................................269
QoS dot1p Traffic Classification and Queue Assignment............................................................... 270
DCB Maps and its Attributes..............................................................................................................271
DCB Map: Configuration Procedure...........................................................................................271
Important Points to Remember.................................................................................................. 271
Applying a DCB Map on a Port................................................................................................... 272
Configuring PFC without a DCB Map.........................................................................................272
Configuring Lossless Queues..................................................................................................... 273
Data Center Bridging: Default Configuration.................................................................................. 274
Configuring PFC and ETS in a DCB Map..........................................................................................274
PFC Configuration Notes............................................................................................................274
PFC Prerequisites and Restrictions.............................................................................................276
ETS Configuration Notes............................................................................................................ 276
ETS Prerequisites and Restrictions..............................................................................................277
Configuring Priority-Based Flow Control.........................................................................................277
Configuring Lossless Queues..................................................................................................... 279
Configure Enhanced Transmission Selection..................................................................................279
ETS Prerequisites and Restrictions.............................................................................................280
Creating an ETS Priority Group.................................................................................................. 280
ETS Operation with DCBx.......................................................................................................... 280
Configuring Bandwidth Allocation for DCBx CIN......................................................................281
Applying DCB Policies in a Switch Stack......................................................................................... 282
Configure a DCBx Operation........................................................................................................... 282
DCBx Operation..........................................................................................................................283
DCBx Port Roles..........................................................................................................................283
DCB Configuration Exchange.................................................................................................... 285
Configuration Source Election...................................................................................................285
Propagation of DCB Information............................................................................................... 286
Auto-Detection and Manual Configuration of the DCBx Version............................................286
Behavior of Tagged Packets....................................................................................................... 287
Configuration Example for DSCP and PFC Priorities.................................................................287
DCBx Example............................................................................................................................ 288
DCBx Prerequisites and Restrictions..........................................................................................289
Configuring DCBx.......................................................................................................................289
Verifying the DCB Configuration..................................................................................................... 293
Using PFC and ETS to Manage Data Center Traffic........................................................................ 305
PFC and ETS Configuration Command Examples.................................................................... 306
Using PFC and ETS to Manage Converged Ethernet Traffic..................................................... 307
Hierarchical Scheduling in ETS Output Policies........................................................................ 307
Priority-Based Flow Control Using Dynamic Buffer Method..........................................................307
Pause and Resume of Traffic......................................................................................................308
Buffer Sizes for Lossless or PFC Packets................................................................................... 308
Configuring the Dynamic Buffer Method........................................................................................309
14 Dynamic Host Configuration Protocol (DHCP)........................................ 311
DHCP Packet Format and Options................................................................................................... 311
Assign an IP Address using DHCP.....................................................................................................313
Implementation Information............................................................................................................ 314
Configure the System to be a DHCP Server.................................................................................... 315
Configuring the Server for Automatic Address Allocation.........................................................315
Specifying a Default Gateway..................................................................................................... 317
Configure a Method of Hostname Resolution........................................................................... 317
Using DNS for Address Resolution..............................................................................................317
Using NetBIOS WINS for Address Resolution.............................................................................317
Creating Manual Binding Entries................................................................................................ 318
Debugging the DHCP Server...................................................................................................... 318
Using DHCP Clear Commands...................................................................................................318
Configure the System to be a Relay Agent...................................................................................... 319
Configure the System to be a DHCP Client.....................................................................................321
DHCP Client Operation with Other Features.............................................................................321
DHCP Client on a Management Interface................................................................................. 322
Configure the System for User Port Stacking (Option 230)............................................................323
Configure Secure DHCP...................................................................................................................323
Option 82.................................................................................................................................... 323
DHCP Snooping..........................................................................................................................324
Drop DHCP Packets on Snooped VLANs Only..........................................................................326
Dynamic ARP Inspection............................................................................................................ 326
Configuring Dynamic ARP Inspection........................................................................................328
Source Address Validation................................................................................................................329
Enabling IP Source Address Validation.......................................................................................329
DHCP MAC Source Address Validation......................................................................................330
Enabling IP+MAC Source Address Validation............................................................................330
Viewing the Number of SAV Dropped Packets.......................................................................... 331
Clearing the Number of SAV Dropped Packets......................................................................... 331
15 Equal Cost Multi-Path (ECMP)..................................................................... 332
ECMP for Flow-Based Affinity.......................................................................................................... 332
Configuring the Hash Algorithm................................................................................................ 332
Enabling Deterministic ECMP Next Hop....................................................................................332
Configuring the Hash Algorithm Seed....................................................................................... 333
Link Bundle Monitoring.....................................................................................................................333
Managing ECMP Group Paths.................................................................................................... 334
Creating an ECMP Group Bundle...............................................................................................335
Modifying the ECMP Group Threshold...................................................................................... 335
16 FCoE Transit.....................................................................................................337
Fibre Channel over Ethernet.............................................................................................................337
Ensure Robustness in a Converged Ethernet Network................................................................... 337
FIP Snooping on Ethernet Bridges................................................................................................... 339
FIP Snooping in a Switch Stack.........................................................................................................341
Using FIP Snooping........................................................................................................................... 341
FIP Snooping Prerequisites......................................................................................................... 341
Important Points to Remember................................................................................................. 342
Enabling the FCoE Transit Feature.............................................................................................342
Enable FIP Snooping on VLANs..................................................................................................343
Configure the FC-MAP Value..................................................................................................... 343
Configure a Port for a Bridge-to-Bridge Link............................................................................343
Configure a Port for a Bridge-to-FCF Link................................................................................ 343
Impact on Other Software Features...........................................................................................343
FIP Snooping Restrictions...........................................................................................................344
Configuring FIP Snooping.......................................................................................................... 344
Displaying FIP Snooping Information.............................................................................................. 345
FCoE Transit Configuration Example............................................................................................... 351
17 Enabling FIPS Cryptography.........................................................................353
Configuration Tasks..........................................................................................................................353
Preparing the System........................................................................................................................353
Enabling FIPS Mode.......................................................................................................................... 354
Generating Host-Keys...................................................................................................................... 354
Monitoring FIPS Mode Status........................................................................................................... 355
Disabling FIPS Mode......................................................................................................................... 355
18 Force10 Resilient Ring Protocol (FRRP)..................................................... 357
Protocol Overview............................................................................................................................ 357
Ring Status...................................................................................................................................358
Multiple FRRP Rings.................................................................................................................... 359
Important FRRP Points................................................................................................................359
Important FRRP Concepts..........................................................................................................359
Implementing FRRP...........................................................................................................................361
FRRP Configuration...........................................................................................................................361
Creating the FRRP Group............................................................................................................361
Configuring the Control VLAN................................................................................................... 362
Configuring and Adding the Member VLANs.............................................................................363
Setting the FRRP Timers............................................................................................................. 364
Clearing the FRRP Counters.......................................................................................................365
Viewing the FRRP Configuration................................................................................................365
Viewing the FRRP Information................................................................................................... 365
Troubleshooting FRRP......................................................................................................................366
Configuration Checks.................................................................................................................366
Sample Configuration and Topology...............................................................................................366
19 GARP VLAN Registration Protocol (GVRP)................................................368
Important Points to Remember....................................................................................................... 368
Configure GVRP................................................................................................................................369
Related Configuration Tasks...................................................................................................... 369
Enabling GVRP Globally....................................................................................................................370
Enabling GVRP on a Layer 2 Interface............................................................................................. 370
Configure GVRP Registration........................................................................................................... 370
Configure a GARP Timer................................................................................................................... 371
RPM Redundancy..............................................................................................................................372
20 High Availability (HA).....................................................................................373
Component Redundancy................................................................................................................. 373
RPM Redundancy........................................................................................................................ 373
Automatic and Manual Stack Unit Failover................................................................................ 375
Support for RPM Redundancy by Dell Networking OS Version................................................376
Synchronization between Management and Standby Units..................................................... 376
Configuring RPM Redundancy................................................................................................... 376
Online Insertion and Removal..........................................................................................................378
RPM Online Insertion and Removal........................................................................................... 378
Linecard Online Insertion and Removal.....................................................................................378
Hitless Behavior.................................................................................................................................379
Graceful Restart................................................................................................................................380
Software Resiliency.......................................................................................................................... 380
Software Component Health Monitoring..................................................................................380
System Health Monitoring.......................................................................................................... 381
Failure and Event Logging...........................................................................................................381
Hot-Lock Behavior........................................................................................................................... 382
Process Restartability........................................................................................................................382
Enabling Process Restartability...................................................................................................382
21 Internet Group Management Protocol (IGMP).........................................384
IGMP Implementation Information..................................................................................................384
IGMP Protocol Overview..................................................................................................................384
IGMP Version 2........................................................................................................................... 384
IGMP Version 3............................................................................................................................386
Configure IGMP................................................................................................................................ 389
Related Configuration Tasks...................................................................................................... 389
Viewing IGMP Enabled Interfaces....................................................................................................390
Selecting an IGMP Version...............................................................................................................390
Viewing IGMP Groups.......................................................................................................................391
Adjusting Timers................................................................................................................................391
Adjusting Query and Response Timers...................................................................................... 391
Adjusting the IGMP Querier Timeout Value...............................................................................392
Configuring a Static IGMP Group.....................................................................................................392
Enabling IGMP Immediate-Leave.....................................................................................................393
IGMP Snooping.................................................................................................................................393
IGMP Snooping Implementation Information........................................................................... 393
Configuring IGMP Snooping...................................................................................................... 393
Removing a Group-Port Association.........................................................................................394
Disabling Multicast Flooding...................................................................................................... 394
Specifying a Port as Connected to a Multicast Router..............................................................395
Configuring the Switch as Querier.............................................................................................395
Fast Convergence after MSTP Topology Changes......................................................................... 396
Egress Interface Selection (EIS) for HTTP and IGMP Applications..................................................396
Protocol Separation.................................................................................................................... 397
Enabling and Disabling Management Egress Interface Selection.............................................398
Handling of Management Route Configuration........................................................................399
Handling of Switch-Initiated Traffic...........................................................................................399
Handling of Switch-Destined Traffic......................................................................................... 400
Handling of Transit Traffic (Traffic Separation)..........................................................................401
Mapping of Management Applications and Traffic Type...........................................................401
Behavior of Various Applications for Switch-Initiated Traffic ..................................................402
Behavior of Various Applications for Switch-Destined Traffic .................................................403
Interworking of EIS With Various Applications.......................................................................... 404
Designating a Multicast Router Interface........................................................................................ 405
22 Interfaces.........................................................................................................406
Basic Interface Configuration.......................................................................................................... 406
Advanced Interface Configuration.................................................................................................. 406
Interface Types................................................................................................................................. 407
View Basic Interface Information.....................................................................................................407
Enabling a Physical Interface........................................................................................................... 409
Physical Interfaces............................................................................................................................409
Configuration Task List for Physical Interfaces..........................................................................410
Overview of Layer Modes........................................................................................................... 410
Configuring Layer 2 (Data Link) Mode........................................................................................410
Configuring Layer 2 (Interface) Mode.........................................................................................411
Configuring Layer 3 (Network) Mode......................................................................................... 411
Configuring Layer 3 (Interface) Mode........................................................................................ 412
Egress Interface Selection (EIS)........................................................................................................ 412
Important Points to Remember..................................................................................................413
Configuring EIS............................................................................................................................413
Management Interfaces.................................................................................................................... 413
Configuring Management Interfaces..........................................................................................413
Configuring Management Interfaces on the S-Series............................................................... 414
VLAN Interfaces.................................................................................................................................415
Loopback Interfaces......................................................................................................................... 416
Null Interfaces................................................................................................................................... 416
Port Channel Interfaces....................................................................................................................416
Port Channel Definition and Standards...................................................................................... 417
Port Channel Benefits..................................................................................................................417
Port Channel Implementation.................................................................................................... 417
10/100/1000 Mbps Interfaces in Port Channels........................................................................418
Configuration Tasks for Port Channel Interfaces...................................................................... 418
Creating a Port Channel............................................................................................................. 418
Adding a Physical Interface to a Port Channel...........................................................................419
Reassigning an Interface to a New Port Channel...................................................................... 421
Configuring the Minimum Oper Up Links in a Port Channel....................................................422
..................................................................................................................................................... 422
Assigning an IP Address to a Port Channel................................................................................423
Deleting or Disabling a Port Channel.........................................................................................423
Load Balancing Through Port Channels....................................................................................423
Load-Balancing Method.............................................................................................................423
Changing the Hash Algorithm....................................................................................................424
Bulk Configuration............................................................................................................................425
Interface Range...........................................................................................................................425
Bulk Configuration Examples..................................................................................................... 426
Defining Interface Range Macros.....................................................................................................427
Define the Interface Range.........................................................................................................428
Choosing an Interface-Range Macro........................................................................................ 428
Monitoring and Maintaining Interfaces............................................................................................428
Maintenance Using TDR............................................................................................................. 429
Splitting QSFP Ports to SFP+ Ports.................................................................................................. 430
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................ 431
Important Points to Remember..................................................................................................431
Support for LM4 Optics.............................................................................................................. 432
Example Scenarios......................................................................................................................432
Link Dampening................................................................................................................................436
Important Points to Remember................................................................................................. 436
Enabling Link Dampening...........................................................................................................436
Link Bundle Monitoring.................................................................................................................... 438
Using Ethernet Pause Frames for Flow Control.............................................................................. 438
Enabling Pause Frames...............................................................................................................439
Configure the MTU Size on an Interface.........................................................................................440
Port-Pipes..........................................................................................................................................441
Auto-Negotiation on Ethernet Interfaces........................................................................................ 441
Setting the Speed and Duplex Mode of Ethernet Interfaces.....................................................441
Set Auto-Negotiation Options................................................................................................... 443
View Advanced Interface Information.............................................................................................444
Configuring the Interface Sampling Size...................................................................................444
Dynamic Counters............................................................................................................................446
Clearing Interface Counters.......................................................................................................446
Enhanced Validation of Interface Ranges........................................................................................447
Compressing Configuration Files.....................................................................................................447
23 Internet Protocol Security (IPSec)...............................................................451
Configuring IPSec ............................................................................................................................ 452
24 IPv4 Routing................................................................................................... 453
IP Addresses...................................................................................................................................... 453
Implementation Information...................................................................................................... 453
Configuration Tasks for IP Addresses.............................................................................................. 453
Assigning IP Addresses to an Interface............................................................................................ 454
Configuring Static Routes.................................................................................................................455
Configure Static Routes for the Management Interface.................................................................456
IPv4 Path MTU Discovery Overview.................................................................................................457
Using the Configured Source IP Address in ICMP Messages..........................................................458
Configuring the ICMP Source Interface.....................................................................................458
Configuring the Duration to Establish a TCP Connection..............................................................458
Enabling Directed Broadcast............................................................................................................459
Resolution of Host Names............................................................................................................... 459
Enabling Dynamic Resolution of Host Names................................................................................ 459
Specifying the Local System Domain and a List of Domains......................................................... 460
Configuring DNS with Traceroute...................................................................................................460
ARP.....................................................................................................................................................461
Configuration Tasks for ARP............................................................................................................ 462
Configuring Static ARP Entries.........................................................................................................462
Enabling Proxy ARP...........................................................................................................................463
Clearing ARP Cache..........................................................................................................................463
ARP Learning via Gratuitous ARP..................................................................................................... 463
Enabling ARP Learning via Gratuitous ARP......................................................................................464
ARP Learning via ARP Request.........................................................................................................464
Configuring ARP Retries................................................................................................................... 465
ICMP..................................................................................................................................................466
Configuration Tasks for ICMP..........................................................................................................466
Enabling ICMP Unreachable Messages........................................................................................... 466
UDP Helper....................................................................................................................................... 466
Configure UDP Helper................................................................................................................466
Important Points to Remember................................................................................................. 467
Enabling UDP Helper........................................................................................................................ 467
Configuring a Broadcast Address.....................................................................................................467
Configurations Using UDP Helper................................................................................................... 468
UDP Helper with Broadcast-All Addresses......................................................................................468
UDP Helper with Subnet Broadcast Addresses............................................................................... 469
UDP Helper with Configured Broadcast Addresses........................................................................ 470
UDP Helper with No Configured Broadcast Addresses.................................................................. 470
Troubleshooting UDP Helper...........................................................................................................470
25 IPv6 Routing....................................................................................................472
Protocol Overview............................................................................................................................ 472
Extended Address Space.............................................................................................................472
Stateless Autoconfiguration........................................................................................................472
IPv6 Headers................................................................................................................................473
IPv6 Header Fields.......................................................................................................................474
Extension Header Fields..............................................................................................................475
Addressing...................................................................................................................................476
Implementing IPv6 with Dell Networking OS..................................................................................478
ICMPv6..............................................................................................................................................480
Path MTU Discovery.........................................................................................................................480
IPv6 Neighbor Discovery.................................................................................................................. 481
IPv6 Neighbor Discovery of MTU Packets.................................................................................482
Configuration Task List for IPv6 RDNSS.......................................................................................... 482
Configuring the IPv6 Recursive DNS Server.............................................................................. 482
Debugging IPv6 RDNSS Information Sent to the Host ............................................................ 483
Displaying IPv6 RDNSS Information...........................................................................................484
Secure Shell (SSH) Over an IPv6 Transport......................................................................................485
Configuration Tasks for IPv6............................................................................................................485
Adjusting Your CAM-Profile....................................................................................................... 485
Assigning an IPv6 Address to an Interface.................................................................................486
Assigning a Static IPv6 Route..................................................................................................... 486
Configuring Telnet with IPv6......................................................................................................487
SNMP over IPv6...........................................................................................................................487
Showing IPv6 Information..........................................................................................................488
Showing an IPv6 Interface..........................................................................................................488
Showing IPv6 Routes..................................................................................................................489
Showing the Running-Configuration for an Interface..............................................................490
Clearing IPv6 Routes...................................................................................................................491
26 iSCSI Optimization.........................................................................................492
iSCSI Optimization Overview........................................................................................................... 492
Monitoring iSCSI Traffic Flows................................................................................................... 494
Application of Quality of Service to iSCSI Traffic Flows............................................................494
Information Monitored in iSCSI Traffic Flows............................................................................494
Detection and Auto-Configuration for Dell EqualLogic Arrays................................................ 495
Configuring Detection and Ports for Dell Compellent Arrays..................................................496
Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer........................................496
Enable and Disable iSCSI Optimization..................................................................................... 496
Default iSCSI Optimization Values................................................................................................... 497
iSCSI Optimization Prerequisites..................................................................................................... 498
Configuring iSCSI Optimization.......................................................................................................498
Displaying iSCSI Optimization Information.....................................................................................500
27 Intermediate System to Intermediate System.......................................... 502
IS-IS Protocol Overview................................................................................................................... 502
IS-IS Addressing................................................................................................................................502
Multi-Topology IS-IS........................................................................................................................ 503
Transition Mode..........................................................................................................................504
Interface Support........................................................................................................................504
Adjacencies................................................................................................................................. 504
Graceful Restart................................................................................................................................504
Timers..........................................................................................................................................505
Implementation Information............................................................................................................505
Configuration Information............................................................................................................... 506
Configuration Tasks for IS-IS..................................................................................................... 506
Configuring the Distance of a Route..........................................................................................515
Changing the IS-Type................................................................................................................. 515
Redistributing IPv4 Routes..........................................................................................................518
Redistributing IPv6 Routes.......................................................................................................... 519
Configuring Authentication Passwords..................................................................................... 520
Setting the Overload Bit..............................................................................................................520
Debugging IS-IS...........................................................................................................................521
IS-IS Metric Styles............................................................................................................................. 522
Configure Metric Values................................................................................................................... 522
Maximum Values in the Routing Table.......................................................................................523
Change the IS-IS Metric Style in One Level Only...................................................................... 523
Leaks from One Level to Another...............................................................................................525
Sample Configurations..................................................................................................................... 525
28 Link Aggregation Control Protocol (LACP)...............................................528
Introduction to Dynamic LAGs and LACP....................................................................................... 528
Important Points to Remember................................................................................................. 528
LACP Modes................................................................................................................................ 529
Configuring LACP Commands................................................................................................... 529
LACP Configuration Tasks................................................................................................................530
Creating a LAG............................................................................................................................ 530
Configuring the LAG Interfaces as Dynamic.............................................................................. 531
Setting the LACP Long Timeout................................................................................................. 531
Monitoring and Debugging LACP...............................................................................................532
Shared LAG State Tracking............................................................................................................... 532
Configuring Shared LAG State Tracking.....................................................................................533
Important Points about Shared LAG State Tracking..................................................................534
LACP Basic Configuration Example................................................................................................. 535
Configure a LAG on ALPHA........................................................................................................ 535
29 Layer 2..............................................................................................................543
Manage the MAC Address Table...................................................................................................... 543
Clearing the MAC Address Table................................................................................................543
Setting the Aging Time for Dynamic Entries..............................................................................543
Configuring a Static MAC Address............................................................................................. 544
Displaying the MAC Address Table............................................................................................ 544
MAC Learning Limit.......................................................................................................................... 544
Setting the MAC Learning Limit..................................................................................................545
mac learning-limit Dynamic.......................................................................................................545
mac learning-limit mac-address-sticky.....................................................................................546
mac learning-limit station-move............................................................................................... 546
mac learning-limit no-station-move.........................................................................................546
Learning Limit Violation Actions.................................................................................................547
Setting Station Move Violation Actions...................................................................................... 547
Recovering from Learning Limit and Station Move Violations..................................................548
NIC Teaming.....................................................................................................................................548
Configure Redundant Pairs.............................................................................................................. 549
Important Points about Configuring Redundant Pairs...............................................................551
Far-End Failure Detection.................................................................................................................552
FEFD State Changes....................................................................................................................553
Configuring FEFD........................................................................................................................554
Enabling FEFD on an Interface................................................................................................... 555
Debugging FEFD......................................................................................................................... 556
30 Link Layer Discovery Protocol (LLDP)........................................................558
802.1AB (LLDP) Overview.................................................................................................................558
Protocol Data Units.....................................................................................................................558
Optional TLVs....................................................................................................................................559
Management TLVs...................................................................................................................... 559
TIA-1057 (LLDP-MED) Overview...................................................................................................... 561
TIA Organizationally Specific TLVs.............................................................................................562
Configure LLDP.................................................................................................................................566
Related Configuration Tasks...................................................................................................... 566
Important Points to Remember..................................................................................................567
LLDP Compatibility......................................................................................................................567
CONFIGURATION versus INTERFACE Configurations....................................................................567
Enabling LLDP...................................................................................................................................568
Disabling and Undoing LLDP......................................................................................................568
Advertising TLVs................................................................................................................................568
Viewing the LLDP Configuration......................................................................................................569
Viewing Information Advertised by Adjacent LLDP Agents.............................................................570
Configuring LLDPDU Intervals.......................................................................................................... 571
Configuring Transmit and Receive Mode........................................................................................ 572
Configuring a Time to Live............................................................................................................... 573
Debugging LLDP............................................................................................................................... 573
Relevant Management Objects........................................................................................................ 574
31 Microsoft Network Load Balancing............................................................580
NLB Unicast Mode Scenario.............................................................................................................580
NLB Multicast Mode Scenario...........................................................................................................581
Limitations With Enabling NLB on Switches.................................................................................... 581
Benefits and Working of Microsoft Clustering.................................................................................581
Enable and Disable VLAN Flooding .................................................................................................582
Configuring a Switch for NLB ..........................................................................................................582
..................................................................................................................................................... 582
32 Multicast Source Discovery Protocol (MSDP)...........................................583
Protocol Overview............................................................................................................................583
Anycast RP.........................................................................................................................................585
Implementation Information............................................................................................................585
Configure Multicast Source Discovery Protocol............................................................................. 585
Related Configuration Tasks.......................................................................................................585
Enable MSDP.....................................................................................................................................589
Manage the Source-Active Cache...................................................................................................590
Viewing the Source-Active Cache............................................................................................. 590
Limiting the Source-Active Cache..............................................................................................591
Clearing the Source-Active Cache............................................................................................. 591
Enabling the Rejected Source-Active Cache............................................................................. 591
Accept Source-Active Messages that Fail the RFP Check...............................................................591
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