Dell PowerSwitch S4820T Owner's manual

Category
Software
Type
Owner's manual
Dell Configuration Guide for the S4820T
System
9.7(0.0)
Notes, Cautions, and Warnings
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you
how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Copyright © 2015 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and
intellectual property laws. Dell
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.
2015 - 02
Rev. A00
Contents
1 About this Guide................................................................................................. 36
Audience..............................................................................................................................................36
Conventions........................................................................................................................................ 36
Related Documents............................................................................................................................ 36
2 Configuration Fundamentals............................................................................37
Accessing the Command Line............................................................................................................37
CLI Modes............................................................................................................................................37
Navigating CLI Modes................................................................................................................... 39
The do Command...............................................................................................................................42
Undoing Commands...........................................................................................................................43
Obtaining Help....................................................................................................................................44
Entering and Editing Commands....................................................................................................... 44
Command History...............................................................................................................................45
Filtering show Command Outputs.....................................................................................................45
Multiple Users in Configuration Mode............................................................................................... 47
3 Getting Started................................................................................................... 48
Console Access...................................................................................................................................48
Serial Console................................................................................................................................48
Accessing the CLI Interface and Running Scripts Using SSH............................................................49
Entering CLI commands Using an SSH Connection................................................................... 50
Executing Local CLI Scripts Using an SSH Connection...............................................................50
Default Configuration..........................................................................................................................51
Configuring a Host Name................................................................................................................... 51
Accessing the System Remotely.........................................................................................................51
Accessing the System Remotely................................................................................................... 51
Configure the Management Port IP Address................................................................................51
Configure a Management Route.................................................................................................. 52
Configuring a Username and Password.......................................................................................52
Configuring the Enable Password...................................................................................................... 52
Configuration File Management.........................................................................................................53
Copy Files to and from the System.............................................................................................. 53
Mounting an NFS File System....................................................................................................... 54
Save the Running-Configuration..................................................................................................56
Configure the Overload Bit for a Startup Scenario......................................................................56
Viewing Files.................................................................................................................................. 56
Managing the File System...................................................................................................................58
Enabling Software Features on Devices Using a Command Option................................................ 58
View Command History......................................................................................................................59
Upgrading Dell Networking OS..........................................................................................................60
Using HTTP for File Transfers.............................................................................................................60
Using Hashes to Validate Software Images....................................................................................... 60
4 Management....................................................................................................... 62
Configuring Privilege Levels............................................................................................................... 62
Creating a Custom Privilege Level................................................................................................62
Removing a Command from EXEC Mode................................................................................... 62
Moving a Command from EXEC Privilege Mode to EXEC Mode................................................ 63
Allowing Access to CONFIGURATION Mode Commands.......................................................... 63
Allowing Access to the Following Modes.................................................................................... 63
Applying a Privilege Level to a Username.................................................................................... 65
Applying a Privilege Level to a Terminal Line...............................................................................65
Configuring Logging...........................................................................................................................65
Audit and Security Logs................................................................................................................ 66
Configuring Logging Format ...................................................................................................... 68
Display the Logging Buffer and the Logging Configuration....................................................... 68
Setting Up a Secure Connection to a Syslog Server....................................................................69
Log Messages in the Internal Buffer...................................................................................................70
Configuration Task List for System Log Management.................................................................70
Disabling System Logging...................................................................................................................70
Sending System Messages to a Syslog Server.................................................................................... 71
Configuring a UNIX System as a Syslog Server.............................................................................71
Changing System Logging Settings.................................................................................................... 71
Display the Logging Buffer and the Logging Configuration..............................................................72
Configuring a UNIX Logging Facility Level.........................................................................................73
Synchronizing Log Messages..............................................................................................................74
Enabling Timestamp on Syslog Messages..........................................................................................74
File Transfer Services...........................................................................................................................75
Configuration Task List for File Transfer Services........................................................................ 75
Enabling the FTP Server.................................................................................................................75
Configuring FTP Server Parameters..............................................................................................76
Configuring FTP Client Parameters.............................................................................................. 76
Terminal Lines......................................................................................................................................77
Denying and Permitting Access to a Terminal Line..................................................................... 77
Configuring Login Authentication for Terminal Lines................................................................. 78
Setting Time Out of EXEC Privilege Mode......................................................................................... 79
Using Telnet to get to Another Network Device............................................................................... 79
Lock CONFIGURATION Mode........................................................................................................... 80
Viewing the Configuration Lock Status........................................................................................80
Recovering from a Forgotten Password.............................................................................................81
Recovering from a Forgotten Enable Password.......................................................................... 82
Recovering from a Failed Start........................................................................................................... 83
Restoring the Factory Default Settings...............................................................................................83
Important Points to Remember....................................................................................................83
Restoring Factory Default Environment Variables.......................................................................84
5 802.1ag................................................................................................................. 86
Ethernet CFM...................................................................................................................................... 86
Maintenance Domains........................................................................................................................ 87
Maintenance Points.............................................................................................................................87
Maintenance End Points.....................................................................................................................88
Implementation Information..............................................................................................................89
Configuring the CFM.......................................................................................................................... 89
Related Configuration Tasks.........................................................................................................89
Enabling Ethernet CFM.......................................................................................................................89
Creating a Maintenance Domain....................................................................................................... 89
Creating a Maintenance Association..................................................................................................90
Create Maintenance Points................................................................................................................ 90
Creating a Maintenance End Point...............................................................................................90
Creating a Maintenance Intermediate Point.................................................................................91
Displaying the MP Databases........................................................................................................92
Continuity Check Messages............................................................................................................... 93
Enabling CCM................................................................................................................................94
Enabling Cross-Checking.............................................................................................................94
Sending Loopback Messages and Responses................................................................................... 94
Sending Linktrace Messages and Responses.....................................................................................95
Caching Link Trace........................................................................................................................95
Enabling CFM SNMP Traps................................................................................................................. 96
Displaying Ethernet CFM Statistics.....................................................................................................98
6 802.1X...................................................................................................................99
The Port-Authentication Process.....................................................................................................100
EAP over RADIUS.........................................................................................................................102
Configuring 802.1X........................................................................................................................... 102
Related Configuration Tasks.......................................................................................................102
Important Points to Remember........................................................................................................103
Enabling 802.1X.................................................................................................................................103
Configuring Request Identity Re-Transmissions............................................................................. 105
Configuring a Quiet Period after a Failed Authentication......................................................... 105
Forcibly Authorizing or Unauthorizing a Port..................................................................................106
Re-Authenticating a Port.................................................................................................................. 107
Configuring Timeouts.......................................................................................................................108
Configuring Dynamic VLAN Assignment with Port Authentication................................................109
Guest and Authentication-Fail VLANs.............................................................................................. 110
Configuring a Guest VLAN...........................................................................................................111
Configuring an Authentication-Fail VLAN...................................................................................111
7 Access Control List (ACL) VLAN Groups and Content Addressable
Memory (CAM)...................................................................................................... 113
Optimizing CAM Utilization During the Attachment of ACLs to VLANs..........................................113
Guidelines for Configuring ACL VLAN groups................................................................................. 114
Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters.........................115
Configuring ACL VLAN Groups................................................................................................... 115
Configuring FP Blocks for VLAN Parameters..............................................................................116
Viewing CAM Usage...........................................................................................................................117
Allocating FP Blocks for VLAN Processes.........................................................................................118
8 Access Control Lists (ACLs)............................................................................ 120
IP Access Control Lists (ACLs)...........................................................................................................121
CAM Usage...................................................................................................................................121
Implementing ACLs on Dell Networking OS..............................................................................122
IP Fragment Handling....................................................................................................................... 124
IP Fragments ACL Examples....................................................................................................... 124
Layer 4 ACL Rules Examples....................................................................................................... 125
Configure a Standard IP ACL............................................................................................................ 126
Configuring a Standard IP ACL Filter.......................................................................................... 127
Configure an Extended IP ACL......................................................................................................... 128
Configuring Filters with a Sequence Number............................................................................128
Configuring Filters Without a Sequence Number......................................................................129
Configure Layer 2 and Layer 3 ACLs................................................................................................ 130
Assign an IP ACL to an Interface....................................................................................................... 131
Applying an IP ACL.............................................................................................................................131
Counting ACL Hits.......................................................................................................................132
Configure Ingress ACLs.....................................................................................................................132
Configure Egress ACLs......................................................................................................................133
Applying Egress Layer 3 ACLs (Control-Plane).......................................................................... 134
IP Prefix Lists......................................................................................................................................135
Implementation Information.......................................................................................................135
Configuration Task List for Prefix Lists........................................................................................135
ACL Resequencing............................................................................................................................ 139
Resequencing an ACL or Prefix List............................................................................................140
Route Maps........................................................................................................................................ 141
Implementation Information.......................................................................................................141
Important Points to Remember........................................................................................................142
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
Logging of ACL Processes................................................................................................................148
Guidelines for Configuring ACL Logging................................................................................... 149
Configuring ACL Logging........................................................................................................... 150
Flow-Based Monitoring Support for ACLs........................................................................................151
Behavior of Flow-Based Monitoring........................................................................................... 151
Enabling Flow-Based Monitoring............................................................................................... 152
9 Bidirectional Forwarding Detection (BFD)...................................................154
How BFD Works................................................................................................................................ 154
BFD Packet Format......................................................................................................................155
BFD Sessions................................................................................................................................157
BFD Three-Way Handshake........................................................................................................ 157
Session State Changes................................................................................................................ 158
Important Points to Remember........................................................................................................159
Configure BFD...................................................................................................................................159
Configure BFD for Physical Ports............................................................................................... 160
Configure BFD for Static Routes.................................................................................................163
Configure BFD for OSPF............................................................................................................. 165
Configure BFD for OSPFv3......................................................................................................... 168
Configure BFD for IS-IS...............................................................................................................169
Configure BFD for BGP............................................................................................................... 172
Configure BFD for VRRP..............................................................................................................179
Configuring Protocol Liveness................................................................................................... 182
Troubleshooting BFD.................................................................................................................. 182
10 Border Gateway Protocol IPv4 (BGPv4).................................................... 184
Autonomous Systems (AS)................................................................................................................184
Sessions and Peers............................................................................................................................186
Establish a Session.......................................................................................................................187
Route Reflectors................................................................................................................................187
BGP Attributes...................................................................................................................................188
Best Path Selection Criteria........................................................................................................ 189
Weight.......................................................................................................................................... 191
Local Preference..........................................................................................................................191
Multi-Exit Discriminators (MEDs)................................................................................................ 192
Origin........................................................................................................................................... 193
AS Path.........................................................................................................................................194
Next Hop......................................................................................................................................194
Multiprotocol BGP.............................................................................................................................195
Implement BGP with Dell Networking OS....................................................................................... 195
Additional Path (Add-Path) Support........................................................................................... 195
Advertise IGP Cost as MED for Redistributed Routes................................................................ 195
Ignore Router-ID for Some Best-Path Calculations..................................................................196
Four-Byte AS Numbers............................................................................................................... 196
AS4 Number Representation.......................................................................................................197
AS Number Migration..................................................................................................................198
BGP4 Management Information Base (MIB)..............................................................................200
Important Points to Remember................................................................................................. 200
Configuration Information................................................................................................................201
BGP Configuration............................................................................................................................201
Enabling BGP...............................................................................................................................202
Configuring AS4 Number Representations............................................................................... 206
Configuring Peer Groups........................................................................................................... 208
Configuring BGP Fast Fall-Over................................................................................................. 210
Configuring Passive Peering....................................................................................................... 212
Maintaining Existing AS Numbers During an AS Migration........................................................ 213
Allowing an AS Number to Appear in its Own AS Path..............................................................214
Enabling Graceful Restart............................................................................................................215
Enabling Neighbor Graceful Restart...........................................................................................216
Filtering on an AS-Path Attribute................................................................................................ 216
Regular Expressions as Filters..................................................................................................... 218
Redistributing Routes.................................................................................................................. 219
Enabling Additional Paths...........................................................................................................220
Configuring IP Community Lists................................................................................................ 220
Configuring an IP Extended Community List............................................................................ 222
Filtering Routes with Community Lists...................................................................................... 223
Manipulating the COMMUNITY Attribute...................................................................................223
Changing MED Attributes........................................................................................................... 225
Changing the LOCAL_PREFERENCE Attribute.......................................................................... 225
Changing the NEXT_HOP Attribute........................................................................................... 226
Changing the WEIGHT Attribute.................................................................................................227
Enabling Multipath.......................................................................................................................227
Filtering BGP Routes................................................................................................................... 227
Filtering BGP Routes Using Route Maps.................................................................................... 229
Filtering BGP Routes Using AS-PATH Information....................................................................230
Configuring BGP Route Reflectors............................................................................................ 230
Aggregating Routes.....................................................................................................................231
Configuring BGP Confederations...............................................................................................232
Enabling Route Flap Dampening................................................................................................232
Changing BGP Timers.................................................................................................................235
Enabling BGP Neighbor Soft-Reconfiguration.......................................................................... 235
Route Map Continue...................................................................................................................237
Enabling MBGP Configurations........................................................................................................237
BGP Regular Expression Optimization.............................................................................................238
Debugging BGP................................................................................................................................ 238
Storing Last and Bad PDUs......................................................................................................... 239
Capturing PDUs.......................................................................................................................... 240
PDU Counters..............................................................................................................................241
Sample Configurations..................................................................................................................... 241
11 Content Addressable Memory (CAM)......................................................... 248
CAM Allocation................................................................................................................................. 248
Test CAM Usage................................................................................................................................250
View CAM Profiles.............................................................................................................................250
View CAM-ACL Settings....................................................................................................................251
View CAM Usage...............................................................................................................................253
CAM Optimization.............................................................................................................................253
Troubleshoot CAM Profiling.............................................................................................................254
CAM Profile Mismatches.............................................................................................................254
QoS CAM Region Limitation.......................................................................................................254
12 Control Plane Policing (CoPP)..................................................................... 255
Configure Control Plane Policing.................................................................................................... 256
Configuring CoPP for Protocols.................................................................................................257
Configuring CoPP for CPU Queues...........................................................................................259
CoPP for OSPFv3 Packets.......................................................................................................... 260
Configuring CoPP for OSPFv3....................................................................................................263
Show Commands....................................................................................................................... 264
13 Data Center Bridging (DCB)......................................................................... 266
Ethernet Enhancements in Data Center Bridging........................................................................... 266
Priority-Based Flow Control....................................................................................................... 267
Enhanced Transmission Selection............................................................................................. 268
Data Center Bridging Exchange Protocol (DCBx)..................................................................... 269
Data Center Bridging in a Traffic Flow....................................................................................... 270
Enabling Data Center Bridging.........................................................................................................270
QoS dot1p Traffic Classification and Queue Assignment................................................................271
DCB Maps and its Attributes............................................................................................................. 272
DCB Map: Configuration Procedure.......................................................................................... 272
Important Points to Remember..................................................................................................272
Applying a DCB Map on a Port................................................................................................... 273
Configuring PFC without a DCB Map.........................................................................................273
Configuring Lossless Queues..................................................................................................... 274
Data Center Bridging: Default Configuration.................................................................................. 275
Configuring PFC and ETS in a DCB Map..........................................................................................276
PFC Configuration Notes............................................................................................................276
PFC Prerequisites and Restrictions............................................................................................. 277
ETS Configuration Notes.............................................................................................................277
ETS Prerequisites and Restrictions............................................................................................. 278
Configuring Priority-Based Flow Control........................................................................................ 279
Configuring Lossless Queues.....................................................................................................280
Configure Enhanced Transmission Selection................................................................................. 280
ETS Prerequisites and Restrictions..............................................................................................281
Creating an ETS Priority Group...................................................................................................281
ETS Operation with DCBx...........................................................................................................282
Configuring Bandwidth Allocation for DCBx CIN..................................................................... 283
Applying DCB Policies in a Switch Stack......................................................................................... 283
Configure a DCBx Operation...........................................................................................................284
DCBx Operation..........................................................................................................................284
DCBx Port Roles..........................................................................................................................284
DCB Configuration Exchange.................................................................................................... 286
Configuration Source Election................................................................................................... 287
Propagation of DCB Information............................................................................................... 287
Auto-Detection and Manual Configuration of the DCBx Version............................................ 287
Behavior of Tagged Packets.......................................................................................................288
Configuration Example for DSCP and PFC Priorities................................................................ 288
DCBx Example............................................................................................................................ 289
DCBx Prerequisites and Restrictions..........................................................................................290
Configuring DCBx.......................................................................................................................290
Verifying the DCB Configuration..................................................................................................... 294
Using PFC and ETS to Manage Data Center Traffic........................................................................ 305
PFC and ETS Configuration Command Examples.....................................................................307
Using PFC and ETS to Manage Converged Ethernet Traffic..................................................... 307
Hierarchical Scheduling in ETS Output Policies........................................................................ 307
Priority-Based Flow Control Using Dynamic Buffer Method......................................................... 308
Pause and Resume of Traffic......................................................................................................308
Buffer Sizes for Lossless or PFC Packets................................................................................... 309
Configuring the Dynamic Buffer Method........................................................................................309
Sample Configurations......................................................................................................................311
...................................................................................................................................................... 311
14 Dynamic Host Configuration Protocol (DHCP)........................................ 315
DHCP Packet Format and Options...................................................................................................315
Assign an IP Address using DHCP.....................................................................................................317
Implementation Information............................................................................................................ 318
Configure the System to be a DHCP Server.................................................................................... 319
Configuring the Server for Automatic Address Allocation........................................................ 319
Specifying a Default Gateway..................................................................................................... 321
Configure a Method of Hostname Resolution...........................................................................321
Using DNS for Address Resolution............................................................................................. 321
Using NetBIOS WINS for Address Resolution.............................................................................321
Creating Manual Binding Entries.................................................................................................321
Debugging the DHCP Server......................................................................................................322
Using DHCP Clear Commands...................................................................................................322
Configure the System to be a Relay Agent......................................................................................322
Configure the System to be a DHCP Client.................................................................................... 324
DHCP Client Operation with Other Features.............................................................................325
DHCP Client on a Management Interface................................................................................. 326
Configure the System for User Port Stacking (Option 230)............................................................326
Configure Secure DHCP...................................................................................................................326
Option 82.....................................................................................................................................327
DHCP Snooping.......................................................................................................................... 327
Drop DHCP Packets on Snooped VLANs Only.......................................................................... 331
Dynamic ARP Inspection.............................................................................................................331
Configuring Dynamic ARP Inspection........................................................................................332
Source Address Validation................................................................................................................333
Enabling IP Source Address Validation.......................................................................................334
DHCP MAC Source Address Validation......................................................................................334
Enabling IP+MAC Source Address Validation............................................................................ 334
Viewing the Number of SAV Dropped Packets..........................................................................335
Clearing the Number of SAV Dropped Packets.........................................................................336
15 Equal Cost Multi-Path (ECMP)......................................................................337
ECMP for Flow-Based Affinity.......................................................................................................... 337
Configuring the Hash Algorithm.................................................................................................337
Enabling Deterministic ECMP Next Hop.................................................................................... 337
Configuring the Hash Algorithm Seed....................................................................................... 338
Link Bundle Monitoring.................................................................................................................... 338
Managing ECMP Group Paths.................................................................................................... 339
Creating an ECMP Group Bundle...............................................................................................339
Modifying the ECMP Group Threshold......................................................................................340
16 FCoE Transit.................................................................................................... 341
Fibre Channel over Ethernet.............................................................................................................341
Ensure Robustness in a Converged Ethernet Network................................................................... 341
FIP Snooping on Ethernet Bridges................................................................................................... 343
FIP Snooping in a Switch Stack........................................................................................................ 345
Using FIP Snooping...........................................................................................................................345
FIP Snooping Prerequisites.........................................................................................................345
Important Points to Remember................................................................................................. 346
Enabling the FCoE Transit Feature............................................................................................. 347
Enable FIP Snooping on VLANs.................................................................................................. 347
Configure the FC-MAP Value..................................................................................................... 347
Configure a Port for a Bridge-to-Bridge Link............................................................................ 347
Configure a Port for a Bridge-to-FCF Link................................................................................ 348
Impact on Other Software Features...........................................................................................348
FIP Snooping Restrictions...........................................................................................................348
Configuring FIP Snooping.......................................................................................................... 349
Displaying FIP Snooping Information.............................................................................................. 349
FCoE Transit Configuration Example...............................................................................................355
17 Enabling FIPS Cryptography.........................................................................357
Configuration Tasks.......................................................................................................................... 357
Preparing the System........................................................................................................................357
Enabling FIPS Mode.......................................................................................................................... 358
Generating Host-Keys...................................................................................................................... 358
Monitoring FIPS Mode Status........................................................................................................... 359
Disabling FIPS Mode......................................................................................................................... 359
18 Force10 Resilient Ring Protocol (FRRP)..................................................... 361
Protocol Overview............................................................................................................................ 361
Ring Status...................................................................................................................................362
Multiple FRRP Rings.................................................................................................................... 363
Important FRRP Points................................................................................................................363
Important FRRP Concepts..........................................................................................................363
Implementing FRRP.......................................................................................................................... 365
FRRP Configuration.......................................................................................................................... 365
Creating the FRRP Group........................................................................................................... 365
Configuring the Control VLAN...................................................................................................366
Configuring and Adding the Member VLANs.............................................................................367
Setting the FRRP Timers............................................................................................................. 368
Clearing the FRRP Counters.......................................................................................................368
Viewing the FRRP Configuration................................................................................................369
Viewing the FRRP Information................................................................................................... 369
Troubleshooting FRRP......................................................................................................................369
Configuration Checks.................................................................................................................369
Sample Configuration and Topology...............................................................................................369
19 GARP VLAN Registration Protocol (GVRP)................................................ 372
Important Points to Remember........................................................................................................372
Configure GVRP................................................................................................................................ 373
Related Configuration Tasks.......................................................................................................373
Enabling GVRP Globally....................................................................................................................374
Enabling GVRP on a Layer 2 Interface............................................................................................. 374
Configure GVRP Registration........................................................................................................... 374
Configure a GARP Timer...................................................................................................................375
RPM Redundancy..............................................................................................................................376
20 High Availability (HA).....................................................................................377
Component Redundancy................................................................................................................. 377
RPM Redundancy........................................................................................................................ 377
Automatic and Manual Stack Unit Failover................................................................................ 379
Support for RPM Redundancy by Dell Networking OS Version............................................... 380
Synchronization between Management and Standby Units.....................................................380
Configuring RPM Redundancy...................................................................................................380
Online Insertion and Removal..........................................................................................................382
RPM Online Insertion and Removal........................................................................................... 382
Linecard Online Insertion and Removal.....................................................................................382
Hitless Behavior.................................................................................................................................383
Graceful Restart................................................................................................................................ 384
Software Resiliency...........................................................................................................................384
Software Component Health Monitoring..................................................................................384
System Health Monitoring..........................................................................................................384
Failure and Event Logging.......................................................................................................... 385
Hot-Lock Behavior........................................................................................................................... 385
Process Restartability........................................................................................................................386
Enabling Process Restartability...................................................................................................386
21 Internet Group Management Protocol (IGMP).........................................388
IGMP Implementation Information..................................................................................................388
IGMP Protocol Overview..................................................................................................................388
IGMP Version 2........................................................................................................................... 388
IGMP Version 3........................................................................................................................... 390
Configure IGMP................................................................................................................................ 393
Related Configuration Tasks.......................................................................................................393
Viewing IGMP Enabled Interfaces....................................................................................................394
Selecting an IGMP Version............................................................................................................... 394
Viewing IGMP Groups.......................................................................................................................395
Adjusting Timers............................................................................................................................... 395
Adjusting Query and Response Timers......................................................................................395
Enabling IGMP Immediate-Leave.................................................................................................... 396
IGMP Snooping.................................................................................................................................396
IGMP Snooping Implementation Information...........................................................................396
Configuring IGMP Snooping.......................................................................................................397
Removing a Group-Port Association......................................................................................... 397
Disabling Multicast Flooding...................................................................................................... 398
Specifying a Port as Connected to a Multicast Router..............................................................398
Configuring the Switch as Querier.............................................................................................398
Fast Convergence after MSTP Topology Changes......................................................................... 399
Egress Interface Selection (EIS) for HTTP and IGMP Applications..................................................399
Protocol Separation....................................................................................................................400
Enabling and Disabling Management Egress Interface Selection.............................................401
Handling of Management Route Configuration........................................................................402
Handling of Switch-Initiated Traffic...........................................................................................403
Handling of Switch-Destined Traffic......................................................................................... 403
Handling of Transit Traffic (Traffic Separation)......................................................................... 404
Mapping of Management Applications and Traffic Type..........................................................404
Behavior of Various Applications for Switch-Initiated Traffic ..................................................406
Behavior of Various Applications for Switch-Destined Traffic .................................................407
Interworking of EIS With Various Applications.......................................................................... 407
Designating a Multicast Router Interface........................................................................................ 408
22 Interfaces.........................................................................................................409
Basic Interface Configuration.......................................................................................................... 409
Advanced Interface Configuration.................................................................................................. 409
Interface Types..................................................................................................................................410
View Basic Interface Information..................................................................................................... 410
Enabling a Physical Interface............................................................................................................412
Physical Interfaces.............................................................................................................................412
Configuration Task List for Physical Interfaces..........................................................................413
Overview of Layer Modes........................................................................................................... 413
Configuring Layer 2 (Data Link) Mode........................................................................................413
Configuring Layer 2 (Interface) Mode........................................................................................ 414
Configuring Layer 3 (Network) Mode.........................................................................................414
Configuring Layer 3 (Interface) Mode........................................................................................ 415
Egress Interface Selection (EIS)........................................................................................................ 415
Important Points to Remember..................................................................................................416
Configuring EIS............................................................................................................................416
Management Interfaces....................................................................................................................416
Configuring Management Interfaces......................................................................................... 416
Configuring Management Interfaces on the S-Series............................................................... 418
VLAN Interfaces.................................................................................................................................419
Loopback Interfaces.........................................................................................................................420
Null Interfaces...................................................................................................................................420
Port Channel Interfaces................................................................................................................... 420
Port Channel Definition and Standards......................................................................................421
Port Channel Benefits................................................................................................................. 421
Port Channel Implementation.................................................................................................... 421
10/100/1000 Mbps Interfaces in Port Channels........................................................................422
Configuration Tasks for Port Channel Interfaces...................................................................... 422
Creating a Port Channel............................................................................................................. 423
Adding a Physical Interface to a Port Channel.......................................................................... 423
Reassigning an Interface to a New Port Channel......................................................................425
Configuring the Minimum Oper Up Links in a Port Channel....................................................426
.....................................................................................................................................................426
Assigning an IP Address to a Port Channel................................................................................ 427
Deleting or Disabling a Port Channel.........................................................................................427
Load Balancing Through Port Channels.................................................................................... 427
Load-Balancing Method.............................................................................................................428
Changing the Hash Algorithm....................................................................................................428
Bulk Configuration............................................................................................................................430
Interface Range...........................................................................................................................430
Bulk Configuration Examples.....................................................................................................430
Defining Interface Range Macros.....................................................................................................432
Define the Interface Range.........................................................................................................432
Choosing an Interface-Range Macro........................................................................................ 432
Monitoring and Maintaining Interfaces............................................................................................433
Maintenance Using TDR............................................................................................................. 434
Splitting QSFP Ports to SFP+ Ports.................................................................................................. 434
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................ 435
Important Points to Remember................................................................................................. 436
Support for LM4 Optics.............................................................................................................. 436
Example Scenarios......................................................................................................................436
Link Dampening................................................................................................................................440
Important Points to Remember..................................................................................................441
Enabling Link Dampening...........................................................................................................441
Link Bundle Monitoring.................................................................................................................... 442
Using Ethernet Pause Frames for Flow Control.............................................................................. 443
Enabling Pause Frames...............................................................................................................444
Configure the MTU Size on an Interface.........................................................................................444
Port-Pipes......................................................................................................................................... 445
Auto-Negotiation on Ethernet Interfaces........................................................................................445
Setting the Speed and Duplex Mode of Ethernet Interfaces.................................................... 446
Set Auto-Negotiation Options....................................................................................................447
View Advanced Interface Information.............................................................................................448
Configuring the Interface Sampling Size...................................................................................449
Dynamic Counters............................................................................................................................450
Clearing Interface Counters........................................................................................................451
Enhanced Validation of Interface Ranges........................................................................................ 451
Compressing Configuration Files.....................................................................................................452
23 Internet Protocol Security (IPSec).............................................................. 455
Configuring IPSec ............................................................................................................................456
24 IPv4 Routing....................................................................................................457
IP Addresses...................................................................................................................................... 457
Implementation Information...................................................................................................... 457
Configuration Tasks for IP Addresses...............................................................................................457
Assigning IP Addresses to an Interface............................................................................................458
Configuring Static Routes................................................................................................................ 459
Configure Static Routes for the Management Interface................................................................. 461
IPv4 Path MTU Discovery Overview.................................................................................................461
Using the Configured Source IP Address in ICMP Messages..........................................................462
Configuring the ICMP Source Interface.....................................................................................462
Configuring the Duration to Establish a TCP Connection..............................................................463
Enabling Directed Broadcast............................................................................................................463
Resolution of Host Names............................................................................................................... 464
Enabling Dynamic Resolution of Host Names................................................................................ 464
Specifying the Local System Domain and a List of Domains..........................................................465
Configuring DNS with Traceroute................................................................................................... 465
ARP....................................................................................................................................................466
Configuration Tasks for ARP............................................................................................................ 466
Configuring Static ARP Entries......................................................................................................... 467
Enabling Proxy ARP...........................................................................................................................467
Clearing ARP Cache..........................................................................................................................467
ARP Learning via Gratuitous ARP..................................................................................................... 468
Enabling ARP Learning via Gratuitous ARP......................................................................................468
ARP Learning via ARP Request......................................................................................................... 469
Configuring ARP Retries...................................................................................................................469
ICMP..................................................................................................................................................470
Configuration Tasks for ICMP.......................................................................................................... 470
Enabling ICMP Unreachable Messages............................................................................................470
UDP Helper........................................................................................................................................471
Configure UDP Helper................................................................................................................ 471
Important Points to Remember..................................................................................................471
Enabling UDP Helper.........................................................................................................................471
Configuring a Broadcast Address.....................................................................................................472
Configurations Using UDP Helper....................................................................................................472
UDP Helper with Broadcast-All Addresses...................................................................................... 473
UDP Helper with Subnet Broadcast Addresses................................................................................473
UDP Helper with Configured Broadcast Addresses........................................................................ 474
UDP Helper with No Configured Broadcast Addresses.................................................................. 475
Troubleshooting UDP Helper...........................................................................................................475
25 IPv6 Routing....................................................................................................476
Protocol Overview............................................................................................................................476
Extended Address Space.............................................................................................................476
Stateless Autoconfiguration........................................................................................................476
IPv6 Headers................................................................................................................................477
IPv6 Header Fields.......................................................................................................................478
Extension Header Fields..............................................................................................................479
Addressing...................................................................................................................................480
Implementing IPv6 with Dell Networking OS..................................................................................482
ICMPv6..............................................................................................................................................484
Path MTU Discovery......................................................................................................................... 484
IPv6 Neighbor Discovery..................................................................................................................485
IPv6 Neighbor Discovery of MTU Packets.................................................................................486
Configuration Task List for IPv6 RDNSS.......................................................................................... 486
Configuring the IPv6 Recursive DNS Server..............................................................................486
Debugging IPv6 RDNSS Information Sent to the Host .............................................................487
Displaying IPv6 RDNSS Information.......................................................................................... 488
Secure Shell (SSH) Over an IPv6 Transport..................................................................................... 488
Configuration Tasks for IPv6............................................................................................................489
Adjusting Your CAM-Profile....................................................................................................... 489
Assigning an IPv6 Address to an Interface.................................................................................490
Assigning a Static IPv6 Route.....................................................................................................490
Configuring Telnet with IPv6......................................................................................................491
SNMP over IPv6...........................................................................................................................491
Showing IPv6 Information.......................................................................................................... 491
Showing an IPv6 Interface..........................................................................................................492
Showing IPv6 Routes..................................................................................................................493
Showing the Running-Configuration for an Interface..............................................................494
Clearing IPv6 Routes.................................................................................................................. 494
Configuring IPv6 RA Guard.............................................................................................................. 495
Configuring IPv6 RA Guard on an Interface.............................................................................. 497
Monitoring IPv6 RA Guard.......................................................................................................... 497
26 iSCSI Optimization........................................................................................ 498
iSCSI Optimization Overview........................................................................................................... 498
Monitoring iSCSI Traffic Flows................................................................................................... 500
Application of Quality of Service to iSCSI Traffic Flows............................................................500
Information Monitored in iSCSI Traffic Flows........................................................................... 500
Detection and Auto-Configuration for Dell EqualLogic Arrays.................................................501
Configuring Detection and Ports for Dell Compellent Arrays.................................................. 502
Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer........................................502
Enable and Disable iSCSI Optimization......................................................................................502
Default iSCSI Optimization Values...................................................................................................503
iSCSI Optimization Prerequisites..................................................................................................... 504
Configuring iSCSI Optimization.......................................................................................................504
Displaying iSCSI Optimization Information..................................................................................... 506
27 Intermediate System to Intermediate System.......................................... 508
IS-IS Protocol Overview...................................................................................................................508
IS-IS Addressing................................................................................................................................508
Multi-Topology IS-IS........................................................................................................................ 509
Transition Mode.......................................................................................................................... 510
Interface Support.........................................................................................................................510
Adjacencies..................................................................................................................................510
Graceful Restart.................................................................................................................................510
Timers...........................................................................................................................................511
Implementation Information.............................................................................................................511
Configuration Information................................................................................................................512
Configuration Tasks for IS-IS...................................................................................................... 512
Configuring the Distance of a Route..........................................................................................521
Changing the IS-Type................................................................................................................. 521
Redistributing IPv4 Routes..........................................................................................................524
Redistributing IPv6 Routes..........................................................................................................525
Configuring Authentication Passwords......................................................................................525
Setting the Overload Bit..............................................................................................................526
Debugging IS-IS.......................................................................................................................... 527
IS-IS Metric Styles............................................................................................................................. 528
Configure Metric Values...................................................................................................................528
Maximum Values in the Routing Table...................................................................................... 529
Change the IS-IS Metric Style in One Level Only...................................................................... 529
Leaks from One Level to Another.............................................................................................. 530
Sample Configurations......................................................................................................................531
28 Link Aggregation Control Protocol (LACP)...............................................534
Introduction to Dynamic LAGs and LACP....................................................................................... 534
Important Points to Remember................................................................................................. 534
LACP Modes................................................................................................................................ 535
Configuring LACP Commands................................................................................................... 535
LACP Configuration Tasks................................................................................................................536
Creating a LAG............................................................................................................................ 536
Configuring the LAG Interfaces as Dynamic..............................................................................537
Setting the LACP Long Timeout................................................................................................. 537
Monitoring and Debugging LACP.............................................................................................. 538
Shared LAG State Tracking............................................................................................................... 538
Configuring Shared LAG State Tracking.....................................................................................539
Important Points about Shared LAG State Tracking..................................................................540
LACP Basic Configuration Example..................................................................................................541
Configure a LAG on ALPHA........................................................................................................ 541
29 Layer 2..............................................................................................................549
Manage the MAC Address Table...................................................................................................... 549
Clearing the MAC Address Table................................................................................................549
Setting the Aging Time for Dynamic Entries..............................................................................549
Configuring a Static MAC Address............................................................................................. 550
Displaying the MAC Address Table.............................................................................................550
MAC Learning Limit.......................................................................................................................... 550
Setting the MAC Learning Limit.................................................................................................. 551
mac learning-limit Dynamic....................................................................................................... 551
mac learning-limit mac-address-sticky.....................................................................................552
mac learning-limit station-move............................................................................................... 552
mac learning-limit no-station-move......................................................................................... 552
Learning Limit Violation Actions.................................................................................................553
Setting Station Move Violation Actions...................................................................................... 553
Recovering from Learning Limit and Station Move Violations..................................................554
NIC Teaming..................................................................................................................................... 554
Configure Redundant Pairs...............................................................................................................555
Important Points about Configuring Redundant Pairs.............................................................. 557
Far-End Failure Detection................................................................................................................ 558
FEFD State Changes....................................................................................................................559
Configuring FEFD........................................................................................................................560
Enabling FEFD on an Interface....................................................................................................561
Debugging FEFD......................................................................................................................... 562
30 Link Layer Discovery Protocol (LLDP)........................................................564
802.1AB (LLDP) Overview.................................................................................................................564
Protocol Data Units.....................................................................................................................564
Optional TLVs....................................................................................................................................565
Management TLVs...................................................................................................................... 565
TIA-1057 (LLDP-MED) Overview...................................................................................................... 567
TIA Organizationally Specific TLVs.............................................................................................568
Configure LLDP.................................................................................................................................572
Related Configuration Tasks.......................................................................................................572
Important Points to Remember..................................................................................................573
LLDP Compatibility......................................................................................................................573
CONFIGURATION versus INTERFACE Configurations.................................................................... 573
Enabling LLDP................................................................................................................................... 574
Disabling and Undoing LLDP......................................................................................................574
Advertising TLVs................................................................................................................................574
Viewing the LLDP Configuration...................................................................................................... 575
Viewing Information Advertised by Adjacent LLDP Agents.............................................................576
Configuring LLDPDU Intervals..........................................................................................................577
Configuring Transmit and Receive Mode........................................................................................ 578
Configuring a Time to Live............................................................................................................... 579
Debugging LLDP............................................................................................................................... 579
Relevant Management Objects........................................................................................................580
31 Microsoft Network Load Balancing............................................................ 586
NLB Unicast Mode Scenario.............................................................................................................586
NLB Multicast Mode Scenario.......................................................................................................... 587
Limitations With Enabling NLB on Switches.................................................................................... 587
Benefits and Working of Microsoft Clustering.................................................................................587
Enable and Disable VLAN Flooding .................................................................................................588
Configuring a Switch for NLB ..........................................................................................................588
.....................................................................................................................................................588
32 Multicast Source Discovery Protocol (MSDP)...........................................589
Protocol Overview............................................................................................................................589
Anycast RP.........................................................................................................................................591
Implementation Information............................................................................................................ 591
Configure Multicast Source Discovery Protocol............................................................................. 591
Related Configuration Tasks.......................................................................................................591
Enable MSDP.....................................................................................................................................595
Manage the Source-Active Cache................................................................................................... 596
Viewing the Source-Active Cache............................................................................................. 596
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Dell PowerSwitch S4820T Owner's manual

Category
Software
Type
Owner's manual

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