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Dell Configuration Guide for the S4820T
System
9.5(0.1)
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
intellectual property laws. Dell
â„¢
and the Dell logo are trademarks of Dell Inc. in the United States and/or other
jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.
2014 - 07
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...............................................................................................................................40
Undoing Commands...........................................................................................................................41
Obtaining Help.................................................................................................................................... 42
Entering and Editing Commands....................................................................................................... 42
Command History...............................................................................................................................43
Filtering show Command Outputs.....................................................................................................43
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 S4820T and 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................................................ 59
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 ...................................................................................................... 64
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....................................................................................67
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
Configuring Priority-Based Flow Control.........................................................................................271
Configuring Lossless Queues..................................................................................................... 273
Configuring the PFC Buffer in a Switch Stack............................................................................274
Configure Enhanced Transmission Selection..................................................................................275
ETS Prerequisites and Restrictions..............................................................................................275
Creating a QoS DCB Output Policy............................................................................................276
Creating an ETS Priority Group...................................................................................................277
Applying an ETS Output Policy for a Priority Group to an Interface.........................................278
ETS Operation with DCBx.......................................................................................................... 280
Configuring Bandwidth Allocation for DCBx CIN..................................................................... 280
Applying DCB Policies in a Switch Stack..........................................................................................281
Applying DCB Policies with an ETS Configuration.......................................................................... 281
Configure a DCBx Operation........................................................................................................... 282
DCBx Operation..........................................................................................................................282
DCBx Port Roles..........................................................................................................................283
DCB Configuration Exchange.................................................................................................... 284
Configuration Source Election...................................................................................................285
Propagation of DCB Information............................................................................................... 285
Auto-Detection and Manual Configuration of the DCBx Version............................................286
DCBx Example............................................................................................................................ 286
DCBx Prerequisites and Restrictions.......................................................................................... 287
Configuring DCBx....................................................................................................................... 287
Verifying the DCB Configuration......................................................................................................291
PFC and ETS Configuration Examples.............................................................................................302
Using PFC and ETS to Manage Data Center Traffic........................................................................ 303
PFC and ETS Configuration Command Examples.................................................................... 304
Using PFC and ETS to Manage Converged Ethernet Traffic in a Switch Stack........................ 305
Hierarchical Scheduling in ETS Output Policies........................................................................306
Configuring DCB Maps and its Attributes........................................................................................306
DCB Map: Configuration Procedure..........................................................................................306
Important Points to Remember..................................................................................................307
Applying a DCB Map on a Port...................................................................................................308
Configuring PFC without a DCB Map........................................................................................308
Configuring Lossless Queues.....................................................................................................309
Priority-Based Flow Control Using Dynamic Buffer Method..........................................................310
Pause and Resume of Traffic...................................................................................................... 310
Buffer Sizes for Lossless or PFC Packets.....................................................................................311
Interworking of DCB Map With DCB Buffer Threshold Settings......................................................311
Configuring the Dynamic Buffer Method.........................................................................................312
14 Dynamic Host Configuration Protocol (DHCP)........................................314
DHCP Packet Format and Options...................................................................................................314
Assign an IP Address using DHCP.................................................................................................... 316
Implementation Information.............................................................................................................317
Configure the System to be a DHCP Server.................................................................................... 318
Configuring the Server for Automatic Address Allocation........................................................ 318
Specifying a Default Gateway.....................................................................................................320
Configure a Method of Hostname Resolution.......................................................................... 320
Using DNS for Address Resolution.............................................................................................320
Using NetBIOS WINS for Address Resolution............................................................................320
Creating Manual Binding Entries.................................................................................................321
Debugging the DHCP Server...................................................................................................... 321
Using DHCP Clear Commands...................................................................................................321
Configure the System to be a Relay Agent......................................................................................322
Configure the System to be a DHCP Client.................................................................................... 324
DHCP Client Operation with Other Features............................................................................ 324
DHCP Client on a Management Interface................................................................................. 325
Configure the System for User Port Stacking (Option 230)............................................................326
Configure Secure DHCP...................................................................................................................326
Option 82.................................................................................................................................... 326
DHCP Snooping.......................................................................................................................... 327
Drop DHCP Packets on Snooped VLANs Only..........................................................................329
Dynamic ARP Inspection............................................................................................................ 329
Configuring Dynamic ARP Inspection........................................................................................ 331
Source Address Validation................................................................................................................332
Enabling IP Source Address Validation.......................................................................................332
DHCP MAC Source Address Validation......................................................................................332
Enabling IP+MAC Source Address Validation............................................................................ 333
15 Equal Cost Multi-Path (ECMP)..................................................................... 334
ECMP for Flow-Based Affinity.......................................................................................................... 334
Configuring the Hash Algorithm................................................................................................ 334
Enabling Deterministic ECMP Next Hop....................................................................................334
Configuring the Hash Algorithm Seed....................................................................................... 335
Link Bundle Monitoring.....................................................................................................................335
Managing ECMP Group Paths.................................................................................................... 336
Creating an ECMP Group Bundle...............................................................................................337
Modifying the ECMP Group Threshold...................................................................................... 337
16 FCoE Transit.................................................................................................... 339
Fibre Channel over Ethernet............................................................................................................ 339
Ensure Robustness in a Converged Ethernet Network...................................................................339
FIP Snooping on Ethernet Bridges....................................................................................................341
FIP Snooping in a Switch Stack........................................................................................................ 343
Using FIP Snooping...........................................................................................................................343
FIP Snooping Prerequisites.........................................................................................................343
Important Points to Remember................................................................................................. 344
Enabling the FCoE Transit Feature.............................................................................................344
Enable FIP Snooping on VLANs..................................................................................................345
Configure the FC-MAP Value..................................................................................................... 345
Configure a Port for a Bridge-to-Bridge Link............................................................................345
Configure a Port for a Bridge-to-FCF Link................................................................................ 345
Impact on Other Software Features...........................................................................................345
FIP Snooping Restrictions...........................................................................................................346
Configuring FIP Snooping.......................................................................................................... 346
Displaying FIP Snooping Information...............................................................................................347
FCoE Transit Configuration Example...............................................................................................353
17 Enabling FIPS Cryptography.........................................................................355
Configuration Tasks..........................................................................................................................355
Preparing the System........................................................................................................................355
Enabling FIPS Mode.......................................................................................................................... 356
Generating Host-Keys...................................................................................................................... 356
Monitoring FIPS Mode Status........................................................................................................... 357
Disabling FIPS Mode..........................................................................................................................357
18 Force10 Resilient Ring Protocol (FRRP).....................................................359
Protocol Overview............................................................................................................................359
Ring Status.................................................................................................................................. 360
Multiple FRRP Rings.....................................................................................................................361
Important FRRP Points................................................................................................................ 361
Important FRRP Concepts.......................................................................................................... 361
Implementing FRRP.......................................................................................................................... 363
FRRP Configuration.......................................................................................................................... 363
Creating the FRRP Group........................................................................................................... 363
Configuring the Control VLAN...................................................................................................364
Configuring and Adding the Member VLANs.............................................................................365
Setting the FRRP Timers............................................................................................................. 366
Clearing the FRRP Counters....................................................................................................... 367
Viewing the FRRP Configuration................................................................................................ 367
Viewing the FRRP Information....................................................................................................367
Troubleshooting FRRP......................................................................................................................368
Configuration Checks.................................................................................................................368
Sample Configuration and Topology.............................................................................................. 368
19 GARP VLAN Registration Protocol (GVRP)................................................ 370
Important Points to Remember....................................................................................................... 370
Configure GVRP.................................................................................................................................371
Related Configuration Tasks....................................................................................................... 371
Enabling GVRP Globally....................................................................................................................372
Enabling GVRP on a Layer 2 Interface..............................................................................................372
Configure GVRP Registration........................................................................................................... 372
Configure a GARP Timer...................................................................................................................373
RPM Redundancy..............................................................................................................................374
20 High Availability (HA).....................................................................................375
Component Redundancy................................................................................................................. 375
RPM Redundancy........................................................................................................................ 375
Automatic and Manual Stack Unit Failover.................................................................................377
Support for RPM Redundancy by Dell Networking OS Version................................................378
Synchronization between Management and Standby Units.....................................................378
Configuring RPM Redundancy................................................................................................... 378
Online Insertion and Removal......................................................................................................... 380
RPM Online Insertion and Removal........................................................................................... 380
Linecard Online Insertion and Removal.................................................................................... 380
Hitless Behavior.................................................................................................................................381
Graceful Restart................................................................................................................................ 382
Software Resiliency...........................................................................................................................382
Software Component Health Monitoring..................................................................................382
System Health Monitoring..........................................................................................................383
Failure and Event Logging.......................................................................................................... 383
Hot-Lock Behavior........................................................................................................................... 384
Process Restartability........................................................................................................................384
Enabling Process Restartability...................................................................................................384
21 Internet Group Management Protocol (IGMP).........................................386
IGMP Implementation Information..................................................................................................386
IGMP Protocol Overview..................................................................................................................386
IGMP Version 2........................................................................................................................... 386
IGMP Version 3........................................................................................................................... 388
Configure IGMP.................................................................................................................................391
Related Configuration Tasks.......................................................................................................391
Viewing IGMP Enabled Interfaces.................................................................................................... 392
Selecting an IGMP Version............................................................................................................... 392
Viewing IGMP Groups.......................................................................................................................393
Adjusting Timers............................................................................................................................... 393
Adjusting Query and Response Timers......................................................................................393
Adjusting the IGMP Querier Timeout Value...............................................................................394
Configuring a Static IGMP Group.................................................................................................... 394
Enabling IGMP Immediate-Leave.....................................................................................................395
IGMP Snooping................................................................................................................................. 395
IGMP Snooping Implementation Information........................................................................... 395
Configuring IGMP Snooping...................................................................................................... 395
Removing a Group-Port Association......................................................................................... 396
Disabling Multicast Flooding...................................................................................................... 396
Specifying a Port as Connected to a Multicast Router..............................................................397
Configuring the Switch as Querier.............................................................................................397
Fast Convergence after MSTP Topology Changes......................................................................... 398
Egress Interface Selection (EIS) for HTTP and IGMP Applications..................................................398
Protocol Separation....................................................................................................................399
Enabling and Disabling Management Egress Interface Selection............................................ 400
Handling of Management Route Configuration........................................................................ 401
Handling of Switch-Initiated Traffic........................................................................................... 401
Handling of Switch-Destined Traffic......................................................................................... 402
Handling of Transit Traffic (Traffic Separation)..........................................................................403
Mapping of Management Applications and Traffic Type.......................................................... 403
Behavior of Various Applications for Switch-Initiated Traffic ..................................................404
Behavior of Various Applications for Switch-Destined Traffic .................................................405
Interworking of EIS With Various Applications.......................................................................... 406
Designating a Multicast Router Interface........................................................................................ 407
22 Interfaces.........................................................................................................408
Basic Interface Configuration.......................................................................................................... 408
Advanced Interface Configuration.................................................................................................. 408
Interface Types................................................................................................................................. 409
View Basic Interface Information.....................................................................................................409
Enabling a Physical Interface............................................................................................................ 411
Physical Interfaces.............................................................................................................................411
Configuration Task List for Physical Interfaces..........................................................................412
Overview of Layer Modes........................................................................................................... 412
Configuring Layer 2 (Data Link) Mode........................................................................................412
Configuring Layer 2 (Interface) Mode........................................................................................ 413
Configuring Layer 3 (Network) Mode.........................................................................................413
Configuring Layer 3 (Interface) Mode........................................................................................ 414
Egress Interface Selection (EIS)........................................................................................................ 414
Important Points to Remember..................................................................................................415
Configuring EIS............................................................................................................................415
Management Interfaces.................................................................................................................... 415
Configuring Management Interfaces..........................................................................................415
Configuring Management Interfaces on the S-Series............................................................... 416
VLAN Interfaces................................................................................................................................. 417
Loopback Interfaces......................................................................................................................... 418
Null Interfaces................................................................................................................................... 418
Port Channel Interfaces....................................................................................................................418
Port Channel Definition and Standards......................................................................................419
Port Channel Benefits................................................................................................................. 419
Port Channel Implementation....................................................................................................419
10/100/1000 Mbps Interfaces in Port Channels....................................................................... 420
Configuration Tasks for Port Channel Interfaces......................................................................420
Creating a Port Channel.............................................................................................................420
Adding a Physical Interface to a Port Channel...........................................................................421
Reassigning an Interface to a New Port Channel......................................................................423
Configuring the Minimum Oper Up Links in a Port Channel....................................................424
.....................................................................................................................................................424
Assigning an IP Address to a Port Channel................................................................................425
Deleting or Disabling a Port Channel.........................................................................................425
Load Balancing Through Port Channels....................................................................................425
Load-Balancing on the S- Series................................................................................................425
Changing the Hash Algorithm....................................................................................................426
Bulk Configuration............................................................................................................................427
Interface Range........................................................................................................................... 427
Bulk Configuration Examples..................................................................................................... 428
Defining Interface Range Macros.................................................................................................... 429
Define the Interface Range........................................................................................................ 430
Choosing an Interface-Range Macro........................................................................................ 430
Monitoring and Maintaining Interfaces............................................................................................430
Maintenance Using TDR..............................................................................................................431
Splitting QSFP Ports to SFP+ Ports.................................................................................................. 432
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................ 433
Important Points to Remember................................................................................................. 433
Support for LM4 Optics.............................................................................................................. 434
Example Scenarios......................................................................................................................434
Link Dampening................................................................................................................................438
Important Points to Remember................................................................................................. 438
Enabling Link Dampening...........................................................................................................438
Link Bundle Monitoring....................................................................................................................440
Using Ethernet Pause Frames for Flow Control..............................................................................440
Threshold Settings.......................................................................................................................441
Enabling Pause Frames...............................................................................................................442
Configure the MTU Size on an Interface......................................................................................... 442
Port-Pipes......................................................................................................................................... 443
Auto-Negotiation on Ethernet Interfaces........................................................................................443
Setting the Speed and Duplex Mode of Ethernet Interfaces.................................................... 444
Set Auto-Negotiation Options................................................................................................... 445
View Advanced Interface Information.............................................................................................446
Configuring the Interface Sampling Size................................................................................... 447
Dynamic Counters............................................................................................................................448
Clearing Interface Counters.......................................................................................................448
Enhanced Validation of Interface Ranges....................................................................................... 449
Compressing Configuration Files.................................................................................................... 449
23 Internet Protocol Security (IPSec).............................................................. 453
Configuring IPSec ............................................................................................................................454
24 IPv4 Routing................................................................................................... 455
IP Addresses...................................................................................................................................... 455
Implementation Information...................................................................................................... 455
Configuration Tasks for IP Addresses.............................................................................................. 455
Assigning IP Addresses to an Interface............................................................................................ 456
Configuring Static Routes.................................................................................................................457
Configure Static Routes for the Management Interface.................................................................458
IPv4 Path MTU Discovery Overview.................................................................................................459
Using the Configured Source IP Address in ICMP Messages......................................................... 460
Configuring the ICMP Source Interface.................................................................................... 460
Configuring the Duration to Establish a TCP Connection............................................................. 460
Enabling Directed Broadcast............................................................................................................ 461
Resolution of Host Names................................................................................................................461
Enabling Dynamic Resolution of Host Names.................................................................................461
Specifying the Local System Domain and a List of Domains..........................................................462
Configuring DNS with Traceroute................................................................................................... 462
ARP.................................................................................................................................................... 463
Configuration Tasks for ARP............................................................................................................ 464
Configuring Static ARP Entries.........................................................................................................464
Enabling Proxy ARP...........................................................................................................................465
Clearing ARP Cache..........................................................................................................................465
ARP Learning via Gratuitous ARP..................................................................................................... 465
Enabling ARP Learning via Gratuitous ARP......................................................................................466
ARP Learning via ARP Request.........................................................................................................466
Configuring ARP Retries................................................................................................................... 467
ICMP..................................................................................................................................................468
Configuration Tasks for ICMP..........................................................................................................468
Enabling ICMP Unreachable Messages........................................................................................... 468
UDP Helper....................................................................................................................................... 468
Configure UDP Helper................................................................................................................468
Important Points to Remember................................................................................................. 469
Enabling UDP Helper........................................................................................................................469
Configuring a Broadcast Address.................................................................................................... 469
Configurations Using UDP Helper................................................................................................... 470
UDP Helper with Broadcast-All Addresses...................................................................................... 470
UDP Helper with Subnet Broadcast Addresses................................................................................471
UDP Helper with Configured Broadcast Addresses........................................................................ 472
UDP Helper with No Configured Broadcast Addresses.................................................................. 472
Troubleshooting UDP Helper...........................................................................................................472
25 IPv6 Routing....................................................................................................474
Protocol Overview............................................................................................................................474
Extended Address Space.............................................................................................................474
Stateless Autoconfiguration....................................................................................................... 474
IPv6 Headers................................................................................................................................475
IPv6 Header Fields.......................................................................................................................476
Extension Header Fields..............................................................................................................477
Addressing...................................................................................................................................478
Implementing IPv6 with Dell Networking OS................................................................................. 480
ICMPv6..............................................................................................................................................482
Path MTU Discovery......................................................................................................................... 482
IPv6 Neighbor Discovery..................................................................................................................483
IPv6 Neighbor Discovery of MTU Packets.................................................................................484
Configuration Task List for IPv6 RDNSS.......................................................................................... 484
Configuring the IPv6 Recursive DNS Server..............................................................................484
Debugging IPv6 RDNSS Information Sent to the Host ............................................................ 485
Displaying IPv6 RDNSS Information...........................................................................................486
Secure Shell (SSH) Over an IPv6 Transport......................................................................................487
Configuration Tasks for IPv6............................................................................................................ 487
Adjusting Your CAM-Profile........................................................................................................487
Assigning an IPv6 Address to an Interface.................................................................................488
Assigning a Static IPv6 Route..................................................................................................... 488
Configuring Telnet with IPv6..................................................................................................... 489
SNMP over IPv6.......................................................................................................................... 489
Showing IPv6 Information..........................................................................................................490
Showing an IPv6 Interface......................................................................................................... 490
Showing IPv6 Routes.................................................................................................................. 491
Showing the Running-Configuration for an Interface..............................................................492
Clearing IPv6 Routes...................................................................................................................493
26 iSCSI Optimization........................................................................................ 494
iSCSI Optimization Overview........................................................................................................... 494
Monitoring iSCSI Traffic Flows................................................................................................... 496
Application of Quality of Service to iSCSI Traffic Flows............................................................496
Information Monitored in iSCSI Traffic Flows............................................................................496
Detection and Auto-Configuration for Dell EqualLogic Arrays................................................ 497
Configuring Detection and Ports for Dell Compellent Arrays..................................................498
Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer........................................498
Enable and Disable iSCSI Optimization..................................................................................... 498
Default iSCSI Optimization Values...................................................................................................499
iSCSI Optimization Prerequisites..................................................................................................... 500
Configuring iSCSI Optimization.......................................................................................................500
Displaying iSCSI Optimization Information..................................................................................... 502
27 Intermediate System to Intermediate System..........................................504
IS-IS Protocol Overview................................................................................................................... 504
IS-IS Addressing................................................................................................................................504
Multi-Topology IS-IS........................................................................................................................ 505
Transition Mode..........................................................................................................................506
Interface Support........................................................................................................................506
Adjacencies................................................................................................................................. 506
Graceful Restart................................................................................................................................ 506
Timers..........................................................................................................................................507
Implementation Information............................................................................................................507
Configuration Information............................................................................................................... 508
Configuration Tasks for IS-IS..................................................................................................... 508
Configuring the Distance of a Route.......................................................................................... 517
Changing the IS-Type..................................................................................................................517
Redistributing IPv4 Routes..........................................................................................................520
Redistributing IPv6 Routes.......................................................................................................... 521
Configuring Authentication Passwords......................................................................................522
Setting the Overload Bit..............................................................................................................522
Debugging IS-IS.......................................................................................................................... 523
IS-IS Metric Styles............................................................................................................................. 524
Configure Metric Values................................................................................................................... 524
Maximum Values in the Routing Table.......................................................................................525
Change the IS-IS Metric Style in One Level Only...................................................................... 525
Leaks from One Level to Another...............................................................................................527
Sample Configurations..................................................................................................................... 527
28 Link Aggregation Control Protocol (LACP)...............................................530
Introduction to Dynamic LAGs and LACP....................................................................................... 530
Important Points to Remember................................................................................................. 530
LACP Modes.................................................................................................................................531
Configuring LACP Commands....................................................................................................531
LACP Configuration Tasks................................................................................................................ 532
Creating a LAG............................................................................................................................ 532
Configuring the LAG Interfaces as Dynamic..............................................................................533
Setting the LACP Long Timeout................................................................................................. 533
Monitoring and Debugging LACP.............................................................................................. 534
Shared LAG State Tracking............................................................................................................... 534
Configuring Shared LAG State Tracking.....................................................................................535
Important Points about Shared LAG State Tracking..................................................................536
LACP Basic Configuration Example..................................................................................................537
Configure a LAG on ALPHA........................................................................................................ 537
29 Layer 2..............................................................................................................545
Manage the MAC Address Table...................................................................................................... 545
Clearing the MAC Address Table................................................................................................545
Setting the Aging Time for Dynamic Entries..............................................................................545
Configuring a Static MAC Address............................................................................................. 546
Displaying the MAC Address Table.............................................................................................546
MAC Learning Limit.......................................................................................................................... 546
Setting the MAC Learning Limit..................................................................................................547
mac learning-limit Dynamic....................................................................................................... 547
mac learning-limit mac-address-sticky.....................................................................................548
mac learning-limit station-move............................................................................................... 548
mac learning-limit no-station-move.........................................................................................548
Learning Limit Violation Actions.................................................................................................549
Setting Station Move Violation Actions......................................................................................549
Recovering from Learning Limit and Station Move Violations..................................................550
NIC Teaming.....................................................................................................................................550
Configure Redundant Pairs...............................................................................................................551
Important Points about Configuring Redundant Pairs.............................................................. 553
Far-End Failure Detection................................................................................................................ 554
FEFD State Changes....................................................................................................................555
Configuring FEFD........................................................................................................................556
Enabling FEFD on an Interface....................................................................................................557
Debugging FEFD......................................................................................................................... 558
30 Link Layer Discovery Protocol (LLDP)........................................................560
802.1AB (LLDP) Overview.................................................................................................................560
Protocol Data Units.................................................................................................................... 560
Optional TLVs.................................................................................................................................... 561
Management TLVs.......................................................................................................................561
TIA-1057 (LLDP-MED) Overview......................................................................................................563
TIA Organizationally Specific TLVs.............................................................................................564
Configure LLDP.................................................................................................................................568
Related Configuration Tasks...................................................................................................... 568
Important Points to Remember................................................................................................. 569
LLDP Compatibility..................................................................................................................... 569
CONFIGURATION versus INTERFACE Configurations....................................................................569
Enabling LLDP................................................................................................................................... 570
Disabling and Undoing LLDP......................................................................................................570
Advertising TLVs................................................................................................................................570
Viewing the LLDP Configuration.......................................................................................................571
Viewing Information Advertised by Adjacent LLDP Agents.............................................................572
Configuring LLDPDU Intervals..........................................................................................................573
Configuring Transmit and Receive Mode........................................................................................ 574
Configuring a Time to Live............................................................................................................... 575
Debugging LLDP............................................................................................................................... 575
Relevant Management Objects........................................................................................................ 576
31 Microsoft Network Load Balancing............................................................ 582
NLB Unicast Mode Scenario.............................................................................................................582
NLB Multicast Mode Scenario.......................................................................................................... 583
Limitations With Enabling NLB on Switches....................................................................................583
Benefits and Working of Microsoft Clustering................................................................................ 583
Enable and Disable VLAN Flooding .................................................................................................584
Configuring a Switch for NLB ..........................................................................................................584
.....................................................................................................................................................584
32 Multicast Source Discovery Protocol (MSDP)...........................................585
Protocol Overview............................................................................................................................585
Anycast RP.........................................................................................................................................587
Implementation Information............................................................................................................587
Configure Multicast Source Discovery Protocol............................................................................. 587
Related Configuration Tasks.......................................................................................................587
Enable MSDP..................................................................................................................................... 591
Manage the Source-Active Cache................................................................................................... 592
Viewing the Source-Active Cache............................................................................................. 592
Limiting the Source-Active Cache............................................................................................. 593
Clearing the Source-Active Cache.............................................................................................593
Enabling the Rejected Source-Active Cache.............................................................................593
Accept Source-Active Messages that Fail the RFP Check...............................................................593
Specifying Source-Active Messages.................................................................................................597
Limiting the Source-Active Messages from a Peer......................................................................... 598
Preventing MSDP from Caching a Local Source.............................................................................598
Preventing MSDP from Caching a Remote Source.........................................................................599
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