Dell S4048T User manual

Dell Configuration Guide for the
S4048T–ON System
9.10(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.
©2016 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property
laws. Dell and the Dell logo are trademarks of Dell Inc. in the United States and/or other jurisdictions. All other marks and
names mentioned herein may be trademarks of their respective companies.
2016 - 05
Rev. A00

Contents
1 About this Guide......................................................................................................................37
Audience.....................................................................................................................................37
Conventions...............................................................................................................................37
Related Documents................................................................................................................. 38
2 Configuration Fundamentals............................................................................................... 39
Accessing the Command Line...............................................................................................39
CLI Modes..................................................................................................................................40
Navigating CLI Modes........................................................................................................41
The do Command....................................................................................................................45
Undoing Commands............................................................................................................... 45
Obtaining Help..........................................................................................................................46
Entering and Editing Commands..........................................................................................46
Command History....................................................................................................................47
Filtering show Command Outputs.......................................................................................48
Example of the grep Keyword......................................................................................... 48
Multiple Users in Configuration Mode.................................................................................49
3 Getting Started........................................................................................................................50
Console Access.........................................................................................................................51
Serial Console...................................................................................................................... 51
Accessing the CLI Interface and Running Scripts Using SSH..........................................52
Entering CLI commands Using an SSH Connection...................................................52
Executing Local CLI Scripts Using an SSH Connection..............................................53
Default Configuration..............................................................................................................53
Configuring a Host Name.......................................................................................................53
Accessing the System Remotely........................................................................................... 54
Accessing the System Remotely..................................................................................... 54
Configure the Management Port IP Address................................................................54
Configure a Management Route.....................................................................................55
Configuring a Username and Password........................................................................ 55
Configuring the Enable Password.........................................................................................55
Configuration File Management........................................................................................... 56
Copy Files to and from the System................................................................................ 56
Mounting an NFS File System...........................................................................................57
Save the Running-Configuration.................................................................................... 59
Configure the Overload Bit for a Startup Scenario..................................................... 59
Viewing Files........................................................................................................................ 59
9.10(0.1) 3

Compressing Configuration Files....................................................................................61
Managing the File System.......................................................................................................64
Enabling Software Features on Devices Using a Command Option............................ 64
View Command History..........................................................................................................65
Upgrading Dell Networking OS.............................................................................................65
Verify Software Images Before Installation.........................................................................66
Using HTTP for File Transfers.................................................................................................67
4 Management........................................................................................................................... 69
Configuring Privilege Levels...................................................................................................69
Creating a Custom Privilege Level..................................................................................70
Removing a Command from EXEC Mode.................................................................... 70
Moving a Command from EXEC Privilege Mode to EXEC Mode............................. 70
Allowing Access to CONFIGURATION Mode Commands........................................ 70
Allowing Access to Different Modes............................................................................... 71
Applying a Privilege Level to a Username......................................................................73
Applying a Privilege Level to a Terminal Line................................................................73
Configuring Logging................................................................................................................73
Audit and Security Logs.....................................................................................................74
Configuring Logging Format ..........................................................................................75
Display the Logging Buffer and the Logging Configuration......................................76
Setting Up a Secure Connection to a Syslog Server................................................... 77
Sending System Messages to a Syslog Server.............................................................. 78
Track Login Activity..................................................................................................................78
Restrictions for Tracking Login Activity......................................................................... 79
Configuring Login Activity Tracking............................................................................... 79
Display Login Statistics...................................................................................................... 79
Limit Concurrent Login Sessions...........................................................................................81
Restrictions for Limiting the Number of Concurrent Sessions................................. 81
Configuring Concurrent Session Limit.......................................................................... 82
Enabling the System to Clear Existing Sessions...........................................................82
Log Messages in the Internal Buffer.....................................................................................83
Configuration Task List for System Log Management............................................... 83
Disabling System Logging...................................................................................................... 83
Sending System Messages to a Syslog Server....................................................................84
Configuring a UNIX System as a Syslog Server............................................................84
Changing System Logging Settings..................................................................................... 84
Display the Logging Buffer and the Logging Configuration........................................... 85
Configuring a UNIX Logging Facility Level......................................................................... 86
Synchronizing Log Messages.................................................................................................87
Enabling Timestamp on Syslog Messages.......................................................................... 88
File Transfer Services...............................................................................................................88
9.10(0.1) 4

Configuration Task List for File Transfer Services........................................................89
Enabling the FTP Server.................................................................................................... 89
Configuring FTP Server Parameters............................................................................... 89
Configuring FTP Client Parameters................................................................................90
Terminal Lines...........................................................................................................................90
Denying and Permitting Access to a Terminal Line.....................................................91
Configuring Login Authentication for Terminal Lines................................................ 92
Setting Timeout for EXEC Privilege Mode...........................................................................93
Using Telnet to get to Another Network Device...............................................................94
Lock CONFIGURATION Mode...............................................................................................94
Viewing the Configuration Lock Status......................................................................... 95
Restoring the Factory Default Settings................................................................................ 95
Important Points to Remember...................................................................................... 96
Restoring Factory Default Environment Variables.......................................................96
5 802.1ag..................................................................................................................................... 99
Ethernet CFM............................................................................................................................ 99
Maintenance Domains.......................................................................................................... 100
Maintenance Points................................................................................................................101
Maintenance End Points........................................................................................................101
Implementation Information............................................................................................... 102
Configuring the CFM............................................................................................................. 102
Related Configuration Tasks.......................................................................................... 103
Enable Ethernet CFM.............................................................................................................103
Creating a Maintenance Domain........................................................................................ 103
Creating a Maintenance Association..................................................................................104
Create Maintenance Points..................................................................................................104
Creating a Maintenance End Point...............................................................................104
Creating a Maintenance Intermediate Point...............................................................105
Displaying the MP Databases.........................................................................................105
Continuity Check Messages.................................................................................................106
Enabling CCM....................................................................................................................107
Enabling Cross-Checking...............................................................................................108
Sending Loopback Messages and Responses..................................................................108
Sending Linktrace Messages and Responses................................................................... 109
Caching Link Trace...........................................................................................................110
Enabling CFM SNMP Traps....................................................................................................111
Displaying Ethernet CFM Statistics......................................................................................112
6 802.1X..................................................................................................................................... 114
Port-Authentication Process................................................................................................116
EAP over RADIUS...............................................................................................................118
9.10(0.1) 5

Configuring 802.1X.................................................................................................................118
Related Configuration Tasks...........................................................................................118
Important Points to Remember...........................................................................................119
Enabling 802.1X...................................................................................................................... 120
Configuring Request Identity Re-Transmissions............................................................. 122
Configuring a Quiet Period after a Failed Authentication........................................122
Forcibly Authorizing or Unauthorizing a Port...................................................................123
Re-Authenticating a Port...................................................................................................... 124
Configuring Timeouts............................................................................................................125
Configuring Dynamic VLAN Assignment with Port Authentication.............................126
Guest and Authentication-Fail VLANs................................................................................127
Configuring a Guest VLAN..............................................................................................128
Configuring an Authentication-Fail VLAN...................................................................128
7 Access Control List (ACL) VLAN Groups and Content Addressable Memory
(CAM)..........................................................................................................................................130
Optimizing CAM Utilization During the Attachment of ACLs to VLANs.....................130
Guidelines for Configuring ACL VLAN Groups................................................................. 131
Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters.. 132
Configuring ACL VLAN Groups......................................................................................132
Configuring FP Blocks for VLAN Parameters..............................................................133
Viewing CAM Usage...............................................................................................................134
Allocating FP Blocks for VLAN Processes..........................................................................135
8 Access Control Lists (ACLs).................................................................................................137
IP Access Control Lists (ACLs)............................................................................................. 138
CAM Usage.........................................................................................................................139
Implementing ACLs on Dell Networking OS..............................................................140
Important Points to Remember...........................................................................................141
Configuration Task List for Route Maps...................................................................... 142
Configuring Match Routes............................................................................................. 144
Configuring Set Conditions............................................................................................146
Configure a Route Map for Route Redistribution...................................................... 147
Configure a Route Map for Route Tagging.................................................................147
Continue Clause............................................................................................................... 148
IP Fragment Handling............................................................................................................148
IP Fragments ACL Examples...........................................................................................149
Layer 4 ACL Rules Examples.......................................................................................... 149
Configure a Standard IP ACL............................................................................................... 150
Configuring a Standard IP ACL Filter.............................................................................151
Configure an Extended IP ACL............................................................................................ 152
Configuring Filters with a Sequence Number............................................................ 152
9.10(0.1) 6

Configuring Filters Without a Sequence Number..................................................... 154
Configure Layer 2 and Layer 3 ACLs.................................................................................. 155
Assign an IP ACL to an Interface......................................................................................... 155
Applying an IP ACL................................................................................................................. 156
Counting ACL Hits............................................................................................................ 157
Configure Ingress ACLs.........................................................................................................157
Configure Egress ACLs..........................................................................................................158
Applying Egress Layer 3 ACLs (Control-Plane)...........................................................159
IP Prefix Lists............................................................................................................................159
Implementation Information......................................................................................... 160
Configuration Task List for Prefix Lists.........................................................................160
ACL Resequencing.................................................................................................................164
Resequencing an ACL or Prefix List..............................................................................165
Route Maps..............................................................................................................................166
Implementation Information..........................................................................................166
Logging of ACL Processes....................................................................................................166
Guidelines for Configuring ACL Logging.................................................................... 168
Configuring ACL Logging............................................................................................... 168
Flow-Based Monitoring Support for ACLs........................................................................169
Behavior of Flow-Based Monitoring............................................................................ 169
Enabling Flow-Based Monitoring.................................................................................. 171
Configuring UDF ACL............................................................................................................ 172
9 Bidirectional Forwarding Detection (BFD).......................................................................176
How BFD Works......................................................................................................................176
BFD Packet Format...........................................................................................................178
BFD Sessions..................................................................................................................... 180
BFD Three-Way Handshake...........................................................................................180
Session State Changes.................................................................................................... 182
Important Points to Remember.......................................................................................... 182
Configure BFD.........................................................................................................................183
Configure BFD for Physical Ports..................................................................................183
Configure BFD for Static Routes................................................................................... 186
Configure BFD for OSPF................................................................................................. 188
Configure BFD for OSPFv3..............................................................................................191
Configure BFD for IS-IS...................................................................................................192
Configure BFD for BGP................................................................................................... 195
Configure BFD for VRRP.................................................................................................202
Configuring Protocol Liveness......................................................................................205
Troubleshooting BFD...................................................................................................... 205
10 Border Gateway Protocol IPv4 (BGPv4)........................................................................ 207
9.10(0.1) 7

Autonomous Systems (AS)................................................................................................... 207
Sessions and Peers.................................................................................................................210
Establish a Session............................................................................................................210
Route Reflectors......................................................................................................................211
BGP Attributes......................................................................................................................... 212
Best Path Selection Criteria............................................................................................ 212
Weight................................................................................................................................. 215
Local Preference...............................................................................................................215
Multi-Exit Discriminators (MEDs)...................................................................................216
Origin...................................................................................................................................217
AS Path................................................................................................................................ 217
Next Hop............................................................................................................................ 218
Multiprotocol BGP..................................................................................................................218
Implement BGP with Dell Networking OS........................................................................219
Additional Path (Add-Path) Support............................................................................. 219
Advertise IGP Cost as MED for Redistributed Routes............................................... 219
Ignore Router-ID in Best-Path Calculation................................................................220
Four-Byte AS Numbers................................................................................................... 220
AS4 Number Representation..........................................................................................221
AS Number Migration...................................................................................................... 222
BGP4 Management Information Base (MIB)...............................................................224
Important Points to Remember.................................................................................... 224
Configuration Information................................................................................................... 225
BGP Configuration.................................................................................................................226
Enabling BGP.....................................................................................................................227
Configuring AS4 Number Representations................................................................ 230
Configuring Peer Groups................................................................................................232
Configuring BGP Fast Fall-Over....................................................................................235
Configuring Passive Peering.......................................................................................... 236
Maintaining Existing AS Numbers During an AS Migration......................................237
Allowing an AS Number to Appear in its Own AS Path............................................ 238
Enabling Graceful Restart...............................................................................................239
Enabling Neighbor Graceful Restart............................................................................ 240
Filtering on an AS-Path Attribute...................................................................................241
Regular Expressions as Filters........................................................................................242
Redistributing Routes...................................................................................................... 244
Enabling Additional Paths...............................................................................................245
Configuring IP Community Lists...................................................................................245
Configuring an IP Extended Community List.............................................................246
Filtering Routes with Community Lists........................................................................247
Manipulating the COMMUNITY Attribute................................................................... 248
Changing MED Attributes...............................................................................................250
9.10(0.1) 8

Changing the LOCAL_PREFERENCE Attribute.......................................................... 250
Configuring the local System or a Different System to be the Next Hop for
BGP-Learned Routes....................................................................................................... 251
Changing the WEIGHT Attribute...................................................................................252
Enabling Multipath........................................................................................................... 252
Filtering BGP Routes........................................................................................................252
Filtering BGP Routes Using Route Maps..................................................................... 254
Filtering BGP Routes Using AS-PATH Information....................................................255
Configuring BGP Route Reflectors...............................................................................256
Aggregating Routes......................................................................................................... 256
Configuring BGP Confederations................................................................................. 257
Enabling Route Flap Dampening...................................................................................257
Changing BGP Timers.....................................................................................................260
Enabling BGP Neighbor Soft-Reconfiguration...........................................................261
Route Map Continue....................................................................................................... 262
Enabling MBGP Configurations...........................................................................................263
BGP Regular Expression Optimization.............................................................................. 263
Debugging BGP......................................................................................................................264
Storing Last and Bad PDUs.............................................................................................265
Capturing PDUs................................................................................................................266
PDU Counters................................................................................................................... 267
Sample Configurations..........................................................................................................267
11 Content Addressable Memory (CAM)............................................................................. 274
CAM Allocation....................................................................................................................... 274
Test CAM Usage..................................................................................................................... 276
View CAM-ACL Settings........................................................................................................277
View CAM Usage.................................................................................................................... 279
CAM Optimization..................................................................................................................279
Troubleshoot CAM Profiling................................................................................................ 279
QoS CAM Region Limitation.......................................................................................... 279
12 Control Plane Policing (CoPP)......................................................................................... 281
Configure Control Plane Policing.......................................................................................283
Configuring CoPP for Protocols...................................................................................283
Configuring CoPP for CPU Queues.............................................................................285
CoPP for OSPFv3 Packets.............................................................................................. 286
Configuring CoPP for OSPFv3...................................................................................... 290
Displaying CoPP Configuration ....................................................................................291
13 Data Center Bridging (DCB)............................................................................................. 293
Ethernet Enhancements in Data Center Bridging...........................................................293
9.10(0.1) 9

Priority-Based Flow Control.......................................................................................... 295
Enhanced Transmission Selection................................................................................296
Data Center Bridging Exchange Protocol (DCBx).....................................................297
Data Center Bridging in a Traffic Flow........................................................................ 298
Enabling Data Center Bridging............................................................................................298
DCB Maps and its Attributes.......................................................................................... 299
Data Center Bridging: Default Configuration.................................................................. 300
Configuring Priority-Based Flow Control......................................................................... 301
Configuring Lossless Queues........................................................................................302
Configuring PFC in a DCB Map...........................................................................................303
PFC Configuration Notes............................................................................................... 303
PFC Prerequisites and Restrictions...............................................................................304
Applying a DCB Map on a Port............................................................................................305
Configuring PFC without a DCB Map................................................................................305
Configuring Lossless QueuesExample:.......................................................................306
Priority-Based Flow Control Using Dynamic Buffer Method....................................... 308
Pause and Resume of Traffic.........................................................................................308
Buffer Sizes for Lossless or PFC Packets.....................................................................309
Behavior of Tagged Packets................................................................................................309
Configuration Example for DSCP and PFC Priorities......................................................310
Using PFC to Manage Converged Ethernet Traffic..........................................................311
Configure Enhanced Transmission Selection...................................................................311
ETS Prerequisites and Restrictions................................................................................ 311
Creating an ETS Priority Group......................................................................................312
ETS Operation with DCBx...............................................................................................313
Configuring Bandwidth Allocation for DCBx CIN..................................................... 314
Configuring ETS in a DCB Map......................................................................................315
Hierarchical Scheduling in ETS Output Policies.............................................................. 316
Using ETS to Manage Converged Ethernet Traffic..........................................................317
Applying DCB Policies in a Switch Stack........................................................................... 317
Configure a DCBx Operation...............................................................................................318
DCBx Operation................................................................................................................318
DCBx Port Roles................................................................................................................318
DCB Configuration Exchange....................................................................................... 320
Configuration Source Election...................................................................................... 321
Propagation of DCB Information.................................................................................. 321
Auto-Detection and Manual Configuration of the DCBx Version......................... 322
DCBx Example.................................................................................................................. 322
DCBx Prerequisites and Restrictions............................................................................323
Configuring DCBx............................................................................................................ 323
Verifying the DCB Configuration........................................................................................ 327
QoS dot1p Traffic Classification and Queue Assignment............................................. 338
9.10(0.1) 10

Configuring the Dynamic Buffer Method......................................................................... 339
Sample DCB Configuration................................................................................................. 340
PFC and ETS Configuration Command Examples.................................................... 342
14 Dynamic Host Configuration Protocol (DHCP)............................................................343
DHCP Packet Format and Options.....................................................................................343
Assign an IP Address using DHCP...................................................................................... 345
Implementation Information...............................................................................................346
Configure the System to be a DHCP Server.....................................................................347
Configuring the Server for Automatic Address Allocation...................................... 348
Specifying a Default Gateway........................................................................................349
Configure a Method of Hostname Resolution.......................................................... 349
Using DNS for Address Resolution............................................................................... 350
Using NetBIOS WINS for Address Resolution............................................................ 350
Creating Manual Binding Entries...................................................................................350
Debugging the DHCP Server..........................................................................................351
Using DHCP Clear Commands......................................................................................351
Configure the System to be a Relay Agent....................................................................... 351
Configure the System to be a DHCP Client..................................................................... 353
Configuring the DHCP Client System..........................................................................354
DHCP Client on a Management Interface.................................................................. 355
DHCP Client Operation with Other Features.............................................................356
Configure the System for User Port Stacking (Option 230)..........................................357
Configure Secure DHCP.......................................................................................................357
Option 82........................................................................................................................... 357
DHCP Snooping............................................................................................................... 358
Drop DHCP Packets on Snooped VLANs Only..........................................................362
Dynamic ARP Inspection................................................................................................ 362
Configuring Dynamic ARP Inspection......................................................................... 363
Source Address Validation....................................................................................................365
Enabling IP Source Address Validation........................................................................ 365
DHCP MAC Source Address Validation....................................................................... 366
Enabling IP+MAC Source Address Validation............................................................ 366
Viewing the Number of SAV Dropped Packets..........................................................367
Clearing the Number of SAV Dropped Packets......................................................... 367
15 Equal Cost Multi-Path (ECMP)......................................................................................... 368
ECMP for Flow-Based Affinity.............................................................................................368
Configuring the Hash Algorithm...................................................................................368
Enabling Deterministic ECMP Next Hop.....................................................................368
Configuring the Hash Algorithm Seed.........................................................................369
Link Bundle Monitoring........................................................................................................ 369
9.10(0.1) 11

Managing ECMP Group Paths....................................................................................... 370
Creating an ECMP Group Bundle..................................................................................371
Modifying the ECMP Group Threshold........................................................................ 371
RTAG7....................................................................................................................................... 372
Flow-based Hashing for ECMP........................................................................................... 373
16 FIP Snooping........................................................................................................................377
Fibre Channel over Ethernet................................................................................................ 377
Ensure Robustness in a Converged Ethernet Network.................................................. 377
FIP Snooping on Ethernet Bridges......................................................................................379
FIP Snooping in a Switch Stack...........................................................................................382
Using FIP Snooping................................................................................................................382
FIP Snooping Prerequisites.............................................................................................382
Important Points to Remember.................................................................................... 383
Enabling the FCoE Transit Feature............................................................................... 384
Enable FIP Snooping on VLANs.....................................................................................384
Configure the FC-MAP Value........................................................................................ 384
Configure a Port for a Bridge-to-Bridge Link............................................................ 385
Configure a Port for a Bridge-to-FCF Link................................................................. 385
Impact on Other Software Features.............................................................................385
FIP Snooping Restrictions.............................................................................................. 386
Configuring FIP Snooping..............................................................................................386
Displaying FIP Snooping Information................................................................................ 387
FCoE Transit Configuration Example.................................................................................393
17 FIPS Cryptography............................................................................................................. 395
Configuration Tasks...............................................................................................................395
Preparing the System............................................................................................................ 396
Enabling FIPS Mode...............................................................................................................396
Generating Host-Keys...........................................................................................................397
Monitoring FIPS Mode Status...............................................................................................397
Disabling FIPS Mode.............................................................................................................. 397
18 Force10 Resilient Ring Protocol (FRRP).........................................................................399
Protocol Overview.................................................................................................................399
Ring Status.........................................................................................................................400
Multiple FRRP Rings......................................................................................................... 401
Important FRRP Points....................................................................................................402
Important FRRP Concepts............................................................................................. 403
Implementing FRRP...............................................................................................................404
FRRP Configuration...............................................................................................................405
Creating the FRRP Group...............................................................................................405
9.10(0.1) 12

Configuring the Control VLAN......................................................................................405
Configuring and Adding the Member VLANs.............................................................406
Setting the FRRP Timers................................................................................................. 408
Clearing the FRRP Counters..........................................................................................408
Viewing the FRRP Configuration.................................................................................. 408
Viewing the FRRP Information......................................................................................408
Troubleshooting FRRP..........................................................................................................409
Configuration Checks.....................................................................................................409
Sample Configuration and Topology................................................................................409
19 GARP VLAN Registration Protocol (GVRP).................................................................... 412
Important Points to Remember.......................................................................................... 412
Configure GVRP......................................................................................................................414
Related Configuration Tasks.......................................................................................... 415
Enabling GVRP Globally........................................................................................................ 415
Enabling GVRP on a Layer 2 Interface............................................................................... 415
Configure GVRP Registration...............................................................................................416
Configure a GARP Timer.......................................................................................................416
RPM Redundancy................................................................................................................... 417
20 High Availability (HA).........................................................................................................418
Component Redundancy..................................................................................................... 418
Automatic and Manual Stack Unit Failover................................................................. 419
Synchronization between Management and Standby Units.................................. 420
Forcing an Stack Unit Failover.......................................................................................420
Specifying an Auto-Failover Limit.................................................................................420
Disabling Auto-Reboot....................................................................................................421
Manually Synchronizing Management and Standby Units...................................... 421
Pre-Configuring a Stack Unit Slot.......................................................................................421
Removing a Provisioned Logical Stack Unit..................................................................... 421
Hitless Behavior...................................................................................................................... 422
Graceful Restart......................................................................................................................422
Software Resiliency................................................................................................................423
Software Component Health Monitoring................................................................... 423
System Health Monitoring..............................................................................................423
Failure and Event Logging..............................................................................................423
Hot-Lock Behavior................................................................................................................ 424
21 Internet Group Management Protocol (IGMP).............................................................425
IGMP Implementation Information....................................................................................425
IGMP Protocol Overview......................................................................................................426
IGMP Version 2................................................................................................................. 426
9.10(0.1) 13

IGMP Version 3................................................................................................................. 427
Configure IGMP...................................................................................................................... 431
Related Configuration Tasks.......................................................................................... 431
Viewing IGMP Enabled Interfaces.......................................................................................431
Selecting an IGMP Version...................................................................................................432
Viewing IGMP Groups...........................................................................................................432
Adjusting Timers.....................................................................................................................433
Adjusting Query and Response Timers....................................................................... 433
Preventing a Host from Joining a Group..........................................................................434
Enabling IGMP Immediate-Leave....................................................................................... 437
IGMP Snooping.......................................................................................................................437
IGMP Snooping Implementation Information............................................................437
Configuring IGMP Snooping..........................................................................................438
Removing a Group-Port Association...........................................................................438
Disabling Multicast Flooding..........................................................................................439
Specifying a Port as Connected to a Multicast Router............................................ 439
Configuring the Switch as Querier...............................................................................439
Fast Convergence after MSTP Topology Changes.........................................................440
Egress Interface Selection (EIS) for HTTP and IGMP Applications..............................440
Protocol Separation......................................................................................................... 441
Enabling and Disabling Management Egress Interface Selection......................... 442
Handling of Management Route Configuration........................................................444
Handling of Switch-Initiated Traffic.............................................................................444
Handling of Switch-Destined Traffic........................................................................... 445
Handling of Transit Traffic (Traffic Separation)..........................................................446
Mapping of Management Applications and Traffic Type........................................ 446
Behavior of Various Applications for Switch-Initiated Traffic ................................447
Behavior of Various Applications for Switch-Destined Traffic ..............................448
Interworking of EIS With Various Applications.......................................................... 449
Designating a Multicast Router Interface......................................................................... 450
22 Interfaces............................................................................................................................. 451
Basic Interface Configuration.............................................................................................. 451
Advanced Interface Configuration......................................................................................451
Interface Types....................................................................................................................... 452
View Basic Interface Information........................................................................................453
Resetting an Interface to its Factory Default State......................................................... 455
Enabling a Physical Interface...............................................................................................455
Physical Interfaces................................................................................................................. 456
Configuration Task List for Physical Interfaces..........................................................456
Overview of Layer Modes...............................................................................................456
Configuring Layer 2 (Data Link) Mode......................................................................... 457
9.10(0.1) 14

Configuring Layer 2 (Interface) Mode..........................................................................457
Configuring Layer 3 (Network) Mode.......................................................................... 458
Configuring Layer 3 (Interface) Mode..........................................................................458
Egress Interface Selection (EIS)...........................................................................................459
Important Points to Remember.................................................................................... 459
Configuring EIS.................................................................................................................460
Management Interfaces....................................................................................................... 460
Configuring Management Interfaces...........................................................................460
Configuring a Management Interface on an Ethernet Port.................................... 462
VLAN Interfaces......................................................................................................................463
Loopback Interfaces..............................................................................................................464
Null Interfaces........................................................................................................................ 464
Port Channel Interfaces........................................................................................................465
Port Channel Definition and Standards.......................................................................465
Port Channel Benefits..................................................................................................... 465
Port Channel Implementation.......................................................................................465
Interfaces in Port Channels............................................................................................466
Configuration Tasks for Port Channel Interfaces......................................................466
Creating a Port Channel................................................................................................. 467
Adding a Physical Interface to a Port Channel.......................................................... 467
Reassigning an Interface to a New Port Channel..................................................... 469
Configuring the Minimum Oper Up Links in a Port Channel..................................470
Adding or Removing a Port Channel from a VLAN...................................................470
Assigning an IP Address to a Port Channel.................................................................472
Deleting or Disabling a Port Channel...........................................................................472
Load Balancing Through Port Channels..................................................................... 472
Changing the Hash Algorithm....................................................................................... 473
Bulk Configuration.................................................................................................................473
Interface Range.................................................................................................................473
Bulk Configuration Examples........................................................................................ 474
Defining Interface Range Macros....................................................................................... 476
Define the Interface Range............................................................................................ 476
Choosing an Interface-Range Macro.......................................................................... 476
Monitoring and Maintaining Interfaces............................................................................. 476
Maintenance Using TDR................................................................................................. 478
Non Dell-Qualified Transceivers........................................................................................ 478
Splitting QSFP Ports to SFP+ Ports.....................................................................................479
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port..........................................480
Important Points to Remember....................................................................................480
Example Scenarios........................................................................................................... 481
Link Dampening..................................................................................................................... 482
Important Points to Remember....................................................................................482
9.10(0.1) 15

Enabling Link Dampening.............................................................................................. 482
Link Bundle Monitoring........................................................................................................ 484
Using Ethernet Pause Frames for Flow Control..............................................................485
Enabling Pause Frames...................................................................................................486
Configure the MTU Size on an Interface.......................................................................... 486
Port-Pipes................................................................................................................................487
Auto-Negotiation on Ethernet Interfaces.........................................................................488
Setting the Speed and Duplex Mode of Ethernet Interfaces.................................. 488
Set Auto-Negotiation Options...................................................................................... 490
View Advanced Interface Information...............................................................................490
Configuring the Interface Sampling Size.....................................................................491
Dynamic Counters.................................................................................................................493
Clearing Interface Counters.......................................................................................... 493
23 Internet Protocol Security (IPSec).................................................................................. 495
Configuring IPSec .................................................................................................................496
24 IPv4 Routing....................................................................................................................... 497
IP Addresses............................................................................................................................498
Implementation Information.........................................................................................498
Configuration Tasks for IP Addresses................................................................................498
Assigning IP Addresses to an Interface............................................................................. 499
Configuring Static Routes....................................................................................................500
Configure Static Routes for the Management Interface................................................501
IPv4 Path MTU Discovery Overview...................................................................................501
Using the Configured Source IP Address in ICMP Messages....................................... 502
Configuring the ICMP Source Interface......................................................................502
Configuring the Duration to Establish a TCP Connection............................................503
Enabling Directed Broadcast...............................................................................................503
Resolution of Host Names...................................................................................................504
Enabling Dynamic Resolution of Host Names................................................................ 504
Specifying the Local System Domain and a List of Domains....................................... 505
Configuring DNS with Traceroute......................................................................................505
ARP............................................................................................................................................506
Configuration Tasks for ARP................................................................................................506
Configuring Static ARP Entries............................................................................................ 507
Enabling Proxy ARP................................................................................................................507
Clearing ARP Cache.............................................................................................................. 508
ARP Learning via Gratuitous ARP........................................................................................508
Enabling ARP Learning via Gratuitous ARP.......................................................................509
ARP Learning via ARP Request............................................................................................ 509
Configuring ARP Retries........................................................................................................510
9.10(0.1) 16

ICMP.......................................................................................................................................... 511
Configuration Tasks for ICMP.............................................................................................. 511
Enabling ICMP Unreachable Messages.............................................................................. 511
UDP Helper.............................................................................................................................. 512
Configure UDP Helper.....................................................................................................512
Important Points to Remember.....................................................................................512
Enabling UDP Helper............................................................................................................. 512
Configuring a Broadcast Address........................................................................................513
Configurations Using UDP Helper...................................................................................... 513
UDP Helper with Broadcast-All Addresses....................................................................... 514
UDP Helper with Subnet Broadcast Addresses................................................................515
UDP Helper with Configured Broadcast Addresses........................................................515
UDP Helper with No Configured Broadcast Addresses................................................. 516
Troubleshooting UDP Helper.............................................................................................. 516
25 IPv6 Routing........................................................................................................................518
Protocol Overview................................................................................................................. 518
Extended Address Space.................................................................................................519
Stateless Autoconfiguration........................................................................................... 519
IPv6 Headers..................................................................................................................... 520
IPv6 Header Fields............................................................................................................520
Extension Header Fields..................................................................................................522
Addressing..........................................................................................................................523
Implementing IPv6 with Dell Networking OS..................................................................524
ICMPv6..................................................................................................................................... 527
Path MTU Discovery.............................................................................................................. 527
IPv6 Neighbor Discovery......................................................................................................528
IPv6 Neighbor Discovery of MTU Packets.................................................................. 529
Configuration Task List for IPv6 RDNSS............................................................................529
Configuring the IPv6 Recursive DNS Server...............................................................530
Debugging IPv6 RDNSS Information Sent to the Host ...........................................530
Displaying IPv6 RDNSS Information............................................................................. 531
Secure Shell (SSH) Over an IPv6 Transport.......................................................................532
Configuration Tasks for IPv6................................................................................................532
Adjusting Your CAM-Profile........................................................................................... 532
Assigning an IPv6 Address to an Interface.................................................................. 533
Assigning a Static IPv6 Route.........................................................................................534
Configuring Telnet with IPv6.........................................................................................534
SNMP over IPv6................................................................................................................ 535
Displaying IPv6 Information...........................................................................................535
Displaying an IPv6 Interface Information....................................................................536
Showing IPv6 Routes.......................................................................................................536
9.10(0.1) 17

Showing the Running-Configuration for an Interface.............................................538
Clearing IPv6 Routes....................................................................................................... 538
Configuring IPv6 RA Guard..................................................................................................539
Configuring IPv6 RA Guard on an Interface............................................................... 541
Monitoring IPv6 RA Guard.............................................................................................. 541
26 iSCSI Optimization.............................................................................................................542
iSCSI Optimization Overview...............................................................................................542
Monitoring iSCSI Traffic Flows...................................................................................... 544
Application of Quality of Service to iSCSI Traffic Flows...........................................545
Information Monitored in iSCSI Traffic Flows............................................................ 545
Detection and Auto-Configuration for Dell EqualLogic Arrays............................. 546
Configuring Detection and Ports for Dell Compellent Arrays................................547
Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer.....................547
Enable and Disable iSCSI Optimization.......................................................................548
Default iSCSI Optimization Values..................................................................................... 549
iSCSI Optimization Prerequisites........................................................................................ 549
Configuring iSCSI Optimization..........................................................................................549
Displaying iSCSI Optimization Information...................................................................... 552
27 Intermediate System to Intermediate System.............................................................. 554
IS-IS Protocol Overview....................................................................................................... 554
IS-IS Addressing......................................................................................................................555
Multi-Topology IS-IS............................................................................................................. 555
Transition Mode................................................................................................................556
Interface Support..............................................................................................................556
Adjacencies........................................................................................................................556
Graceful Restart......................................................................................................................556
Timers................................................................................................................................. 557
Implementation Information............................................................................................... 557
Configuration Information...................................................................................................558
Configuration Tasks for IS-IS.........................................................................................559
Configuring the Distance of a Route........................................................................... 567
Changing the IS-Type..................................................................................................... 568
Redistributing IPv4 Routes............................................................................................. 570
Redistributing IPv6 Routes..............................................................................................571
Configuring Authentication Passwords....................................................................... 572
Setting the Overload Bit.................................................................................................. 573
Debugging IS-IS................................................................................................................573
IS-IS Metric Styles...................................................................................................................575
Configure Metric Values....................................................................................................... 575
Maximum Values in the Routing Table........................................................................ 575
9.10(0.1) 18

Change the IS-IS Metric Style in One Level Only...................................................... 575
Leaks from One Level to Another................................................................................. 577
Sample Configurations..........................................................................................................578
28 Link Aggregation Control Protocol (LACP)...................................................................581
Introduction to Dynamic LAGs and LACP.........................................................................581
Important Points to Remember.....................................................................................581
LACP Modes...................................................................................................................... 582
Configuring LACP Commands......................................................................................582
LACP Configuration Tasks....................................................................................................583
Creating a LAG..................................................................................................................583
Configuring the LAG Interfaces as Dynamic..............................................................584
Setting the LACP Long Timeout................................................................................... 584
Monitoring and Debugging LACP.................................................................................585
Shared LAG State Tracking...................................................................................................585
Configuring Shared LAG State Tracking......................................................................586
Important Points about Shared LAG State Tracking.................................................588
LACP Basic Configuration Example................................................................................... 588
Configure a LAG on ALPHA........................................................................................... 588
29 Layer 2.................................................................................................................................. 597
Manage the MAC Address Table......................................................................................... 597
Clearing the MAC Address Table...................................................................................597
Setting the Aging Time for Dynamic Entries...............................................................597
Configuring a Static MAC Address............................................................................... 598
Displaying the MAC Address Table...............................................................................598
MAC Learning Limit............................................................................................................... 598
Setting the MAC Learning Limit.................................................................................... 599
mac learning-limit Dynamic.......................................................................................... 599
mac learning-limit mac-address-sticky......................................................................600
mac learning-limit station-move................................................................................. 600
mac learning-limit no-station-move.......................................................................... 600
Learning Limit Violation Actions....................................................................................601
Setting Station Move Violation Actions........................................................................601
Recovering from Learning Limit and Station Move Violations...............................602
NIC Teaming...........................................................................................................................602
Configure Redundant Pairs..................................................................................................604
Important Points about Configuring Redundant Pairs............................................ 606
Far-End Failure Detection.................................................................................................... 607
FEFD State Changes........................................................................................................ 608
Configuring FEFD............................................................................................................. 610
Enabling FEFD on an Interface.......................................................................................611
9.10(0.1) 19

Debugging FEFD............................................................................................................... 612
30 Link Layer Discovery Protocol (LLDP)............................................................................ 613
802.1AB (LLDP) Overview..................................................................................................... 613
Protocol Data Units..........................................................................................................613
Optional TLVs..........................................................................................................................614
Management TLVs............................................................................................................615
TIA-1057 (LLDP-MED) Overview.........................................................................................617
TIA Organizationally Specific TLVs................................................................................617
Configure LLDP...................................................................................................................... 622
Related Configuration Tasks..........................................................................................622
Important Points to Remember.................................................................................... 622
LLDP Compatibility.......................................................................................................... 622
CONFIGURATION versus INTERFACE Configurations...................................................622
Enabling LLDP.........................................................................................................................623
Disabling and Undoing LLDP.........................................................................................623
Enabling LLDP on Management Ports...............................................................................624
Disabling and Undoing LLDP on Management Ports...............................................624
Advertising TLVs..................................................................................................................... 624
Viewing the LLDP Configuration........................................................................................ 626
Viewing Information Advertised by Adjacent LLDP Agents.......................................... 626
Configuring LLDPDU Intervals.............................................................................................627
Configuring Transmit and Receive Mode.........................................................................628
Configuring the Time to Live Value................................................................................... 629
Debugging LLDP.................................................................................................................... 630
Relevant Management Objects........................................................................................... 631
31 Microsoft Network Load Balancing................................................................................ 637
NLB Unicast Mode Scenario................................................................................................ 637
NLB Multicast Mode Scenario............................................................................................. 638
Limitations of the NLB Feature........................................................................................... 638
Microsoft Clustering..............................................................................................................638
Enable and Disable VLAN Flooding ...................................................................................639
Configuring a Switch for NLB .............................................................................................639
Enabling a Switch for Multicast NLB............................................................................ 639
32 Multicast Source Discovery Protocol (MSDP)...............................................................641
Protocol Overview................................................................................................................. 641
Anycast RP...............................................................................................................................644
Implementation Information...............................................................................................644
Configure Multicast Source Discovery Protocol.............................................................644
Related Configuration Tasks..........................................................................................645
9.10(0.1) 20