Dell PowerSwitch S4820T User guide

Dell
Brand
Dell
Model
PowerSwitch S4820T
Category
Software
Type
User guide
Dell Conguration Guide for the S4820T System
9.10(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.
© 2016 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. Dell and the Dell logo are
trademarks of Dell Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be trademarks of their respective
companies.
2016 - 04
Rev. A00
Contents
1 About this Guide...........................................................................................................................................32
Audience............................................................................................................................................................................32
Conventions......................................................................................................................................................................32
Related Documents......................................................................................................................................................... 32
2 Conguration Fundamentals........................................................................................................................ 33
Accessing the Command Line........................................................................................................................................33
CLI Modes.........................................................................................................................................................................33
Navigating CLI Modes...............................................................................................................................................35
The do Command.............................................................................................................................................................37
Undoing Commands........................................................................................................................................................ 38
Obtaining Help..................................................................................................................................................................38
Entering and Editing Commands....................................................................................................................................39
Command History............................................................................................................................................................40
Filtering show Command Outputs.................................................................................................................................40
Example of the grep Keyword.................................................................................................................................. 40
Multiple Users in Conguration Mode............................................................................................................................41
3 Getting Started............................................................................................................................................42
Console Access................................................................................................................................................................ 43
Serial Console............................................................................................................................................................. 43
Accessing the CLI Interface and Running Scripts Using SSH....................................................................................44
Entering CLI commands Using an SSH Connection..............................................................................................44
Executing Local CLI Scripts Using an SSH Connection........................................................................................44
Default Conguration...................................................................................................................................................... 45
Conguring a Host Name............................................................................................................................................... 45
Accessing the System Remotely....................................................................................................................................45
Accessing the System Remotely..............................................................................................................................45
Congure the Management Port IP Address.........................................................................................................45
Congure a Management Route..............................................................................................................................46
Conguring a Username and Password.................................................................................................................. 46
Conguring the Enable Password..................................................................................................................................46
Conguration File Management..................................................................................................................................... 47
Copy Files to and from the System......................................................................................................................... 47
Mounting an NFS File System..................................................................................................................................48
Save the Running-Conguration..............................................................................................................................49
Congure the Overload Bit for a Startup Scenario............................................................................................... 50
Viewing Files...............................................................................................................................................................50
Managing the File System............................................................................................................................................... 51
Enabling Software Features on Devices Using a Command Option.......................................................................... 51
View Command History.................................................................................................................................................. 52
Upgrading Dell Networking OS...................................................................................................................................... 52
Using HTTP for File Transfers........................................................................................................................................ 52
Contents
3
Verify Software Images Before Installation...................................................................................................................53
4 Management............................................................................................................................................... 55
Conguring Privilege Levels........................................................................................................................................... 55
Creating a Custom Privilege Level...........................................................................................................................55
Removing a Command from EXEC Mode.............................................................................................................. 56
Moving a Command from EXEC Privilege Mode to EXEC Mode....................................................................... 56
Allowing Access to CONFIGURATION Mode Commands....................................................................................56
Allowing Access to Dierent Modes........................................................................................................................56
Applying a Privilege Level to a Username............................................................................................................... 58
Applying a Privilege Level to a Terminal Line.......................................................................................................... 58
Conguring Logging........................................................................................................................................................ 58
Audit and Security Logs............................................................................................................................................ 59
Conguring Logging Format ...................................................................................................................................60
Display the Logging Buer and the Logging Conguration...................................................................................61
Setting Up a Secure Connection to a Syslog Server............................................................................................. 61
Log Messages in the Internal Buer..............................................................................................................................63
Conguration Task List for System Log Management.......................................................................................... 63
Disabling System Logging............................................................................................................................................... 63
Sending System Messages to a Syslog Server............................................................................................................ 63
Conguring a UNIX System as a Syslog Server.....................................................................................................63
Track Login Activity......................................................................................................................................................... 64
Restrictions for Tracking Login Activity...................................................................................................................64
Conguring Login Activity Tracking......................................................................................................................... 64
Display Login Statistics..............................................................................................................................................65
Limit Concurrent Login Sessions....................................................................................................................................66
Restrictions for Limiting the Number of Concurrent Sessions............................................................................ 66
Conguring Concurrent Session Limit.....................................................................................................................66
Enabling the System to Clear Existing Sessions.................................................................................................... 67
Changing System Logging Settings...............................................................................................................................67
Display the Logging Buer and the Logging Conguration........................................................................................68
Conguring a UNIX Logging Facility Level....................................................................................................................69
Synchronizing Log Messages......................................................................................................................................... 70
Enabling Timestamp on Syslog Messages.................................................................................................................... 70
File Transfer Services....................................................................................................................................................... 71
Conguration Task List for File Transfer Services...................................................................................................71
Enabling the FTP Server............................................................................................................................................71
Conguring FTP Server Parameters........................................................................................................................72
Conguring FTP Client Parameters......................................................................................................................... 72
Terminal Lines................................................................................................................................................................... 73
Denying and Permitting Access to a Terminal Line................................................................................................ 73
Conguring Login Authentication for Terminal Lines............................................................................................. 74
Setting Timeout for EXEC Privilege Mode................................................................................................................... 75
Using Telnet to get to Another Network Device..........................................................................................................75
Lock CONFIGURATION Mode....................................................................................................................................... 76
Viewing the Conguration Lock Status...................................................................................................................76
Recovering from a Forgotten Password....................................................................................................................... 76
4
Contents
Recovering from a Forgotten Enable Password.....................................................................................................77
Recovering from a Failed Start.......................................................................................................................................78
Restoring the Factory Default Settings.........................................................................................................................78
Important Points to Remember................................................................................................................................79
Restoring Factory Default Environment Variables................................................................................................. 79
5 802.1X.......................................................................................................................................................... 81
Port-Authentication Process..........................................................................................................................................83
EAP over RADIUS......................................................................................................................................................84
Conguring 802.1X...........................................................................................................................................................84
Related Conguration Tasks..................................................................................................................................... 84
Important Points to Remember......................................................................................................................................84
Enabling 802.1X................................................................................................................................................................ 85
Conguring MAC addresses for a do1x Prole.............................................................................................................86
Conguring Request Identity Re-Transmissions........................................................................................................... 87
Conguring a Quiet Period after a Failed Authentication......................................................................................87
Forcibly Authorizing or Unauthorizing a Port............................................................................................................... 88
Re-Authenticating a Port................................................................................................................................................89
Conguring Timeouts......................................................................................................................................................90
Conguring Dynamic VLAN Assignment with Port Authentication........................................................................... 91
Guest and Authentication-Fail VLANs.......................................................................................................................... 92
Conguring a Guest VLAN....................................................................................................................................... 92
Conguring an Authentication-Fail VLAN...............................................................................................................92
Conguring dot1x Prole ................................................................................................................................................93
Conguring the Static MAB and MAB Prole .............................................................................................................94
Conguring Critical VLAN ..............................................................................................................................................94
6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)....................................96
Optimizing CAM Utilization During the Attachment of ACLs to VLANs...................................................................96
Guidelines for Conguring ACL VLAN Groups............................................................................................................. 97
Conguring ACL VLAN Groups and Conguring FP Blocks for VLAN Parameters................................................ 97
Conguring ACL VLAN Groups................................................................................................................................ 97
Conguring FP Blocks for VLAN Parameters........................................................................................................ 98
Viewing CAM Usage........................................................................................................................................................99
Allocating FP Blocks for VLAN Processes.................................................................................................................. 100
7 Access Control Lists (ACLs)........................................................................................................................101
IP Access Control Lists (ACLs).....................................................................................................................................102
CAM Usage...............................................................................................................................................................102
Implementing ACLs on Dell Networking OS..........................................................................................................103
IP Fragment Handling.................................................................................................................................................... 105
IP Fragments ACL Examples...................................................................................................................................105
Layer 4 ACL Rules Examples.................................................................................................................................. 105
Congure a Standard IP ACL........................................................................................................................................106
Conguring a Standard IP ACL Filter..................................................................................................................... 107
Congure an Extended IP ACL.....................................................................................................................................108
Conguring Filters with a Sequence Number.......................................................................................................108
Contents
5
Conguring Filters Without a Sequence Number................................................................................................ 109
Congure Layer 2 and Layer 3 ACLs............................................................................................................................ 110
Assign an IP ACL to an Interface...................................................................................................................................110
Applying an IP ACL.......................................................................................................................................................... 111
Counting ACL Hits..................................................................................................................................................... 111
Congure Ingress ACLs.................................................................................................................................................. 112
Congure Egress ACLs...................................................................................................................................................112
Applying Egress Layer 3 ACLs (Control-Plane)..................................................................................................... 113
IP Prex Lists................................................................................................................................................................... 113
Implementation Information..................................................................................................................................... 114
Conguration Task List for Prex Lists...................................................................................................................114
ACL Resequencing.......................................................................................................................................................... 117
Resequencing an ACL or Prex List........................................................................................................................118
Route Maps......................................................................................................................................................................119
Implementation Information..................................................................................................................................... 119
Important Points to Remember.....................................................................................................................................119
Conguration Task List for Route Maps................................................................................................................ 120
Conguring Match Routes...................................................................................................................................... 122
Conguring Set Conditions..................................................................................................................................... 123
Congure a Route Map for Route Redistribution.................................................................................................124
Congure a Route Map for Route Tagging............................................................................................................124
Continue Clause........................................................................................................................................................125
Logging of ACL Processes............................................................................................................................................ 125
Guidelines for Conguring ACL Logging................................................................................................................126
Conguring ACL Logging.........................................................................................................................................126
Flow-Based Monitoring Support for ACLs.................................................................................................................. 127
Behavior of Flow-Based Monitoring.......................................................................................................................127
Enabling Flow-Based Monitoring............................................................................................................................128
8 Bidirectional Forwarding Detection (BFD).................................................................................................. 130
How BFD Works............................................................................................................................................................. 130
BFD Packet Format...................................................................................................................................................131
BFD Sessions............................................................................................................................................................ 132
BFD Three-Way Handshake.................................................................................................................................... 133
Session State Changes............................................................................................................................................135
Important Points to Remember.................................................................................................................................... 135
Congure BFD................................................................................................................................................................ 135
Congure BFD for Physical Ports...........................................................................................................................136
Congure BFD for Static Routes............................................................................................................................139
Congure BFD for OSPF..........................................................................................................................................141
Congure BFD for OSPFv3.....................................................................................................................................143
Congure BFD for IS-IS...........................................................................................................................................145
Congure BFD for BGP........................................................................................................................................... 147
Congure BFD for VRRP.........................................................................................................................................154
Conguring Protocol Liveness................................................................................................................................156
Troubleshooting BFD................................................................................................................................................156
6
Contents
9 Border Gateway Protocol IPv4 (BGPv4).................................................................................................... 158
Autonomous Systems (AS)...........................................................................................................................................158
Sessions and Peers........................................................................................................................................................ 160
Establish a Session...................................................................................................................................................160
Route Reectors............................................................................................................................................................. 161
BGP Attributes................................................................................................................................................................162
Best Path Selection Criteria....................................................................................................................................162
Weight........................................................................................................................................................................164
Local Preference.......................................................................................................................................................164
Multi-Exit Discriminators (MEDs)...........................................................................................................................165
Origin..........................................................................................................................................................................166
AS Path......................................................................................................................................................................166
Next Hop................................................................................................................................................................... 167
Multiprotocol BGP.......................................................................................................................................................... 167
Implement BGP with Dell Networking OS...................................................................................................................168
Additional Path (Add-Path) Support......................................................................................................................168
Advertise IGP Cost as MED for Redistributed Routes........................................................................................ 168
Ignore Router-ID in Best-Path Calculation............................................................................................................ 169
Four-Byte AS Numbers........................................................................................................................................... 169
AS4 Number Representation.................................................................................................................................. 169
AS Number Migration............................................................................................................................................... 171
BGP4 Management Information Base (MIB)........................................................................................................172
Important Points to Remember.............................................................................................................................. 172
Conguration Information..............................................................................................................................................173
BGP Conguration..........................................................................................................................................................173
Enabling BGP.............................................................................................................................................................174
Conguring AS4 Number Representations............................................................................................................177
Conguring Peer Groups......................................................................................................................................... 178
Conguring BGP Fast Fall-Over..............................................................................................................................181
Conguring Passive Peering................................................................................................................................... 182
Maintaining Existing AS Numbers During an AS Migration................................................................................. 183
Allowing an AS Number to Appear in its Own AS Path....................................................................................... 184
Enabling Graceful Restart....................................................................................................................................... 185
Enabling Neighbor Graceful Restart...................................................................................................................... 186
Filtering on an AS-Path Attribute........................................................................................................................... 186
Regular Expressions as Filters................................................................................................................................. 187
Redistributing Routes...............................................................................................................................................189
Enabling Additional Paths........................................................................................................................................ 189
Conguring IP Community Lists.............................................................................................................................190
Conguring an IP Extended Community List.........................................................................................................191
Filtering Routes with Community Lists.................................................................................................................. 192
Manipulating the COMMUNITY Attribute.............................................................................................................192
Changing MED Attributes....................................................................................................................................... 194
Changing the LOCAL_PREFERENCE Attribute.................................................................................................. 194
Changing the NEXT_HOP Attribute......................................................................................................................195
Changing the WEIGHT Attribute............................................................................................................................195
Contents
7
Enabling Multipath....................................................................................................................................................196
Filtering BGP Routes................................................................................................................................................196
Filtering BGP Routes Using Route Maps...............................................................................................................197
Filtering BGP Routes Using AS-PATH Information.............................................................................................. 198
Conguring BGP Route Reectors........................................................................................................................ 198
Aggregating Routes..................................................................................................................................................199
Conguring BGP Confederations........................................................................................................................... 199
Enabling Route Flap Dampening............................................................................................................................ 200
Changing BGP Timers.............................................................................................................................................202
Enabling BGP Neighbor Soft-Reconguration.....................................................................................................203
Route Map Continue............................................................................................................................................... 204
Enabling MBGP Congurations................................................................................................................................... 204
BGP Regular Expression Optimization........................................................................................................................205
Debugging BGP............................................................................................................................................................. 205
Storing Last and Bad PDUs....................................................................................................................................206
Capturing PDUs....................................................................................................................................................... 207
PDU Counters.......................................................................................................................................................... 208
Sample Congurations.................................................................................................................................................. 208
10 Content Addressable Memory (CAM)....................................................................................................... 214
CAM Allocation............................................................................................................................................................... 214
Test CAM Usage.............................................................................................................................................................216
View CAM Proles..........................................................................................................................................................216
View CAM-ACL Settings............................................................................................................................................... 217
View CAM Usage............................................................................................................................................................218
CAM Optimization.......................................................................................................................................................... 219
Troubleshoot CAM Proling.......................................................................................................................................... 219
CAM Prole Mismatches.........................................................................................................................................219
QoS CAM Region Limitation................................................................................................................................... 219
11 Control Plane Policing (CoPP).................................................................................................................. 220
Congure Control Plane Policing.................................................................................................................................. 221
Conguring CoPP for Protocols............................................................................................................................ 222
Conguring CoPP for CPU Queues...................................................................................................................... 224
CoPP for OSPFv3 Packets.....................................................................................................................................225
Conguring CoPP for OSPFv3...............................................................................................................................227
Displaying CoPP Conguration ............................................................................................................................. 228
12 Data Center Bridging (DCB)..................................................................................................................... 230
Ethernet Enhancements in Data Center Bridging..................................................................................................... 230
Priority-Based Flow Control.................................................................................................................................... 231
Enhanced Transmission Selection..........................................................................................................................232
Data Center Bridging Exchange Protocol (DCBx)...............................................................................................233
Data Center Bridging in a Trac Flow...................................................................................................................234
Enabling Data Center Bridging..................................................................................................................................... 234
DCB Maps and its Attributes..................................................................................................................................235
Data Center Bridging: Default Conguration..............................................................................................................236
8
Contents
Conguring Priority-Based Flow Control.................................................................................................................... 236
Conguring Lossless Queues..................................................................................................................................237
Conguring PFC in a DCB Map................................................................................................................................... 238
PFC Conguration Notes........................................................................................................................................238
PFC Prerequisites and Restrictions.......................................................................................................................239
Applying a DCB Map on a Port.................................................................................................................................... 239
Conguring PFC without a DCB Map.........................................................................................................................240
Conguring Lossless QueuesExample:..................................................................................................................240
Priority-Based Flow Control Using Dynamic Buer Method.................................................................................... 241
Pause and Resume of Trac...................................................................................................................................241
Buer Sizes for Lossless or PFC Packets.............................................................................................................242
Behavior of Tagged Packets.........................................................................................................................................242
Conguration Example for DSCP and PFC Priorities................................................................................................243
Using PFC to Manage Converged Ethernet Trac...................................................................................................243
Congure Enhanced Transmission Selection..............................................................................................................244
ETS Prerequisites and Restrictions........................................................................................................................244
Creating an ETS Priority Group..............................................................................................................................244
ETS Operation with DCBx...................................................................................................................................... 245
Conguring Bandwidth Allocation for DCBx CIN.................................................................................................246
Conguring ETS in a DCB Map..............................................................................................................................246
Hierarchical Scheduling in ETS Output Policies......................................................................................................... 248
Using ETS to Manage Converged Ethernet Trac...................................................................................................248
Applying DCB Policies in a Switch Stack.................................................................................................................... 248
Congure a DCBx Operation........................................................................................................................................248
DCBx Operation....................................................................................................................................................... 249
DCBx Port Roles...................................................................................................................................................... 249
DCB Conguration Exchange................................................................................................................................ 250
Conguration Source Election................................................................................................................................ 251
Propagation of DCB Information............................................................................................................................ 251
Auto-Detection and Manual Conguration of the DCBx Version....................................................................... 251
DCBx Example..........................................................................................................................................................252
DCBx Prerequisites and Restrictions.....................................................................................................................252
Conguring DCBx....................................................................................................................................................253
Verifying the DCB Conguration................................................................................................................................. 256
Sample DCB Conguration...........................................................................................................................................264
PFC and ETS Conguration Command Examples...............................................................................................266
QoS dot1p Trac Classication and Queue Assignment..........................................................................................266
Conguring the Dynamic Buer Method....................................................................................................................267
13 Dynamic Host Conguration Protocol (DHCP)......................................................................................... 269
DHCP Packet Format and Options............................................................................................................................. 269
Assign an IP Address using DHCP................................................................................................................................271
Implementation Information..........................................................................................................................................272
Congure the System to be a DHCP Server..............................................................................................................272
Conguring the Server for Automatic Address Allocation.................................................................................. 273
Specifying a Default Gateway.................................................................................................................................274
Congure a Method of Hostname Resolution......................................................................................................274
Contents
9
Using DNS for Address Resolution........................................................................................................................ 274
Using NetBIOS WINS for Address Resolution......................................................................................................275
Creating Manual Binding Entries............................................................................................................................275
Debugging the DHCP Server................................................................................................................................. 275
Using DHCP Clear Commands...............................................................................................................................276
Congure the System to be a Relay Agent.................................................................................................................276
Congure the System to be a DHCP Client................................................................................................................277
DHCP Client Operation with Other Features....................................................................................................... 278
DHCP Client on a Management Interface............................................................................................................ 279
Congure the System for User Port Stacking (Option 230)....................................................................................279
Congure Secure DHCP............................................................................................................................................... 280
Option 82..................................................................................................................................................................280
DHCP Snooping........................................................................................................................................................281
Conguring the DHCP secondary-subnet............................................................................................................284
Drop DHCP Packets on Snooped VLANs Only....................................................................................................284
Dynamic ARP Inspection........................................................................................................................................ 285
Conguring Dynamic ARP Inspection................................................................................................................... 286
Source Address Validation.............................................................................................................................................287
Enabling IP Source Address Validation.................................................................................................................. 287
DHCP MAC Source Address Validation................................................................................................................ 288
Enabling IP+MAC Source Address Validation.......................................................................................................288
Viewing the Number of SAV Dropped Packets....................................................................................................289
Clearing the Number of SAV Dropped Packets...................................................................................................289
14 Equal Cost Multi-Path (ECMP)................................................................................................................ 290
ECMP for Flow-Based Anity.....................................................................................................................................290
Conguring the Hash Algorithm............................................................................................................................ 290
Enabling Deterministic ECMP Next Hop.............................................................................................................. 290
Conguring the Hash Algorithm Seed................................................................................................................... 291
Link Bundle Monitoring.................................................................................................................................................. 291
Managing ECMP Group Paths...............................................................................................................................292
Creating an ECMP Group Bundle.......................................................................................................................... 292
Modifying the ECMP Group Threshold.................................................................................................................292
RTAG7.............................................................................................................................................................................293
Flow-based Hashing for ECMP................................................................................................................................... 294
15 FIP Snooping............................................................................................................................................ 297
Fibre Channel over Ethernet........................................................................................................................................ 297
Ensure Robustness in a Converged Ethernet Network............................................................................................ 297
FIP Snooping on Ethernet Bridges..............................................................................................................................299
FIP Snooping in a Switch Stack...................................................................................................................................300
Using FIP Snooping........................................................................................................................................................301
FIP Snooping Prerequisites..................................................................................................................................... 301
Important Points to Remember.............................................................................................................................. 301
Enabling the FCoE Transit Feature........................................................................................................................302
Enable FIP Snooping on VLANs.............................................................................................................................302
Congure the FC-MAP Value................................................................................................................................ 303
10
Contents
Congure a Port for a Bridge-to-Bridge Link.......................................................................................................303
Congure a Port for a Bridge-to-FCF Link...........................................................................................................303
Impact on Other Software Features..................................................................................................................... 303
FIP Snooping Restrictions...................................................................................................................................... 304
Conguring FIP Snooping.......................................................................................................................................304
Displaying FIP Snooping Information...........................................................................................................................305
FCoE Transit Conguration Example........................................................................................................................... 310
16 FIPS Cryptography................................................................................................................................... 312
Conguration Tasks........................................................................................................................................................312
Preparing the System.................................................................................................................................................... 312
Enabling FIPS Mode.......................................................................................................................................................313
Generating Host-Keys....................................................................................................................................................313
Monitoring FIPS Mode Status...................................................................................................................................... 313
Disabling FIPS Mode...................................................................................................................................................... 314
17 Force10 Resilient Ring Protocol (FRRP)....................................................................................................315
Protocol Overview..........................................................................................................................................................315
Ring Status................................................................................................................................................................316
Multiple FRRP Rings................................................................................................................................................ 316
Important FRRP Points............................................................................................................................................317
Important FRRP Concepts......................................................................................................................................318
Implementing FRRP....................................................................................................................................................... 319
FRRP Conguration....................................................................................................................................................... 319
Creating the FRRP Group....................................................................................................................................... 319
Conguring the Control VLAN................................................................................................................................319
Conguring and Adding the Member VLANs.......................................................................................................320
Setting the FRRP Timers.........................................................................................................................................321
Clearing the FRRP Counters.................................................................................................................................. 322
Viewing the FRRP Conguration...........................................................................................................................322
Viewing the FRRP Information...............................................................................................................................322
Troubleshooting FRRP.................................................................................................................................................. 322
Conguration Checks..............................................................................................................................................322
Sample Conguration and Topology............................................................................................................................323
18 GARP VLAN Registration Protocol (GVRP)..............................................................................................325
Important Points to Remember................................................................................................................................... 325
Congure GVRP............................................................................................................................................................ 326
Related Conguration Tasks...................................................................................................................................326
Enabling GVRP Globally................................................................................................................................................ 326
Enabling GVRP on a Layer 2 Interface........................................................................................................................ 327
Congure GVRP Registration.......................................................................................................................................327
Congure a GARP Timer.............................................................................................................................................. 328
RPM Redundancy..........................................................................................................................................................328
19 High Availability (HA)............................................................................................................................... 329
Component Redundancy.............................................................................................................................................. 329
Contents
11
RPM Redundancy....................................................................................................................................................329
Automatic and Manual Stack Unit Failover........................................................................................................... 331
Support for RPM Redundancy by Dell Networking OS Version........................................................................ 332
Synchronization between Management and Standby Units.............................................................................. 332
Conguring RPM Redundancy...............................................................................................................................332
Online Insertion and Removal.......................................................................................................................................333
RPM Online Insertion and Removal.......................................................................................................................334
Linecard Online Insertion and Removal................................................................................................................. 334
Hitless Behavior............................................................................................................................................................. 335
Graceful Restart.............................................................................................................................................................336
Software Resiliency....................................................................................................................................................... 336
Software Component Health Monitoring............................................................................................................. 336
System Health Monitoring......................................................................................................................................336
Failure and Event Logging.......................................................................................................................................336
Hot-Lock Behavior.........................................................................................................................................................337
Process Restartability....................................................................................................................................................337
Enabling Process Restartability..............................................................................................................................338
20 Internet Group Management Protocol (IGMP).........................................................................................339
IGMP Implementation Information.............................................................................................................................. 339
IGMP Protocol Overview..............................................................................................................................................339
IGMP Version 2........................................................................................................................................................ 339
IGMP Version 3.........................................................................................................................................................341
Congure IGMP............................................................................................................................................................. 343
Related Conguration Tasks...................................................................................................................................344
Viewing IGMP Enabled Interfaces............................................................................................................................... 344
Selecting an IGMP Version........................................................................................................................................... 344
Viewing IGMP Groups...................................................................................................................................................345
Adjusting Timers............................................................................................................................................................ 345
Adjusting Query and Response Timers................................................................................................................. 345
Enabling IGMP Immediate-Leave.................................................................................................................................346
IGMP Snooping..............................................................................................................................................................346
IGMP Snooping Implementation Information....................................................................................................... 346
Conguring IGMP Snooping...................................................................................................................................346
Removing a Group-Port Association..................................................................................................................... 347
Disabling Multicast Flooding................................................................................................................................... 347
Specifying a Port as Connected to a Multicast Router...................................................................................... 348
Conguring the Switch as Querier........................................................................................................................ 348
Fast Convergence after MSTP Topology Changes...................................................................................................349
Egress Interface Selection (EIS) for HTTP and IGMP Applications........................................................................349
Protocol Separation.................................................................................................................................................349
Enabling and Disabling Management Egress Interface Selection......................................................................350
Handling of Management Route Conguration.................................................................................................... 351
Handling of Switch-Initiated Trac....................................................................................................................... 352
Handling of Switch-Destined Trac......................................................................................................................352
Handling of Transit Trac (Trac Separation).................................................................................................... 353
Mapping of Management Applications and Trac Type.....................................................................................353
12
Contents
Behavior of Various Applications for Switch-Initiated Trac ............................................................................ 354
Behavior of Various Applications for Switch-Destined Trac .......................................................................... 355
Interworking of EIS With Various Applications.....................................................................................................356
Designating a Multicast Router Interface...................................................................................................................356
21 Interfaces................................................................................................................................................. 357
Basic Interface Conguration....................................................................................................................................... 357
Advanced Interface Conguration...............................................................................................................................357
Interface Types...............................................................................................................................................................358
View Basic Interface Information.................................................................................................................................358
Resetting an Interface to its Factory Default State...................................................................................................360
Enabling a Physical Interface........................................................................................................................................360
Physical Interfaces......................................................................................................................................................... 361
Conguration Task List for Physical Interfaces.....................................................................................................361
Overview of Layer Modes....................................................................................................................................... 361
Conguring Layer 2 (Data Link) Mode..................................................................................................................362
Conguring Layer 2 (Interface) Mode.................................................................................................................. 362
Conguring Layer 3 (Network) Mode...................................................................................................................362
Conguring Layer 3 (Interface) Mode.................................................................................................................. 363
Egress Interface Selection (EIS)..................................................................................................................................364
Important Points to Remember............................................................................................................................. 364
Conguring EIS........................................................................................................................................................ 364
Management Interfaces................................................................................................................................................364
Conguring Management Interfaces.....................................................................................................................364
Conguring a Management Interface on an Ethernet Port............................................................................... 366
VLAN Interfaces.............................................................................................................................................................367
Loopback Interfaces...................................................................................................................................................... 367
Null Interfaces................................................................................................................................................................ 368
Port Channel Interfaces................................................................................................................................................ 368
Port Channel Denition and Standards.................................................................................................................368
Port Channel Benets.............................................................................................................................................368
Port Channel Implementation.................................................................................................................................369
Interfaces in Port Channels.................................................................................................................................... 369
Conguration Tasks for Port Channel Interfaces.................................................................................................369
Creating a Port Channel..........................................................................................................................................370
Adding a Physical Interface to a Port Channel.....................................................................................................370
Reassigning an Interface to a New Port Channel................................................................................................ 372
Conguring the Minimum Oper Up Links in a Port Channel...............................................................................372
Adding or Removing a Port Channel from a VLAN..............................................................................................373
Assigning an IP Address to a Port Channel...........................................................................................................374
Deleting or Disabling a Port Channel..................................................................................................................... 374
Load Balancing Through Port Channels................................................................................................................ 374
Changing the Hash Algorithm................................................................................................................................ 375
Bulk Conguration..........................................................................................................................................................376
Interface Range........................................................................................................................................................376
Bulk Conguration Examples..................................................................................................................................376
Dening Interface Range Macros.................................................................................................................................377
Contents
13
Dene the Interface Range.....................................................................................................................................378
Choosing an Interface-Range Macro.................................................................................................................... 378
Monitoring and Maintaining Interfaces........................................................................................................................378
Maintenance Using TDR......................................................................................................................................... 379
Splitting QSFP Ports to SFP+ Ports........................................................................................................................... 380
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port..................................................................................380
Important Points to Remember.............................................................................................................................. 381
Example Scenarios................................................................................................................................................... 381
Conguring wavelength for 10–Gigabit SFP+ optics................................................................................................384
Link Dampening..............................................................................................................................................................385
Important Points to Remember............................................................................................................................. 385
Enabling Link Dampening........................................................................................................................................385
Link Bundle Monitoring..................................................................................................................................................387
Using Ethernet Pause Frames for Flow Control.........................................................................................................387
Enabling Pause Frames........................................................................................................................................... 388
Congure the MTU Size on an Interface....................................................................................................................388
Port-Pipes.......................................................................................................................................................................389
Auto-Negotiation on Ethernet Interfaces...................................................................................................................389
Setting the Speed and Duplex Mode of Ethernet Interfaces.............................................................................390
Set Auto-Negotiation Options................................................................................................................................ 391
View Advanced Interface Information.........................................................................................................................392
Conguring the Interface Sampling Size.............................................................................................................. 392
Dynamic Counters......................................................................................................................................................... 393
Clearing Interface Counters....................................................................................................................................393
Compressing Conguration Files................................................................................................................................. 394
22 Internet Protocol Security (IPSec).......................................................................................................... 398
Conguring IPSec .........................................................................................................................................................398
23 IPv4 Routing............................................................................................................................................400
IP Addresses....................................................................................................................................................................401
Implementation Information.................................................................................................................................... 401
Conguration Tasks for IP Addresses.......................................................................................................................... 401
Assigning IP Addresses to an Interface....................................................................................................................... 401
Conguring Static Routes.............................................................................................................................................402
Congure Static Routes for the Management Interface..........................................................................................403
IPv4 Path MTU Discovery Overview.......................................................................................................................... 403
Using the Congured Source IP Address in ICMP Messages..................................................................................404
Conguring the ICMP Source Interface............................................................................................................... 404
Conguring the Duration to Establish a TCP Connection........................................................................................ 404
Enabling Directed Broadcast........................................................................................................................................405
Resolution of Host Names............................................................................................................................................405
Enabling Dynamic Resolution of Host Names............................................................................................................405
Specifying the Local System Domain and a List of Domains................................................................................... 406
Conguring DNS with Traceroute............................................................................................................................... 406
ARP..................................................................................................................................................................................407
Conguration Tasks for ARP........................................................................................................................................ 407
14
Contents
Conguring Static ARP Entries....................................................................................................................................408
Enabling Proxy ARP.......................................................................................................................................................408
Clearing ARP Cache......................................................................................................................................................408
ARP Learning via Gratuitous ARP............................................................................................................................... 409
Enabling ARP Learning via Gratuitous ARP................................................................................................................409
ARP Learning via ARP Request................................................................................................................................... 409
Conguring ARP Retries................................................................................................................................................410
ICMP................................................................................................................................................................................ 410
Conguration Tasks for ICMP........................................................................................................................................411
Enabling ICMP Unreachable Messages........................................................................................................................411
UDP Helper...................................................................................................................................................................... 411
Congure UDP Helper.............................................................................................................................................. 411
Important Points to Remember...............................................................................................................................411
Enabling UDP Helper...................................................................................................................................................... 411
Conguring a Broadcast Address................................................................................................................................. 412
Congurations Using UDP Helper................................................................................................................................ 412
UDP Helper with Broadcast-All Addresses..................................................................................................................413
UDP Helper with Subnet Broadcast Addresses..........................................................................................................413
UDP Helper with Congured Broadcast Addresses...................................................................................................414
UDP Helper with No Congured Broadcast Addresses.............................................................................................414
Troubleshooting UDP Helper.........................................................................................................................................415
24 IPv6 Routing.............................................................................................................................................416
Protocol Overview..........................................................................................................................................................416
Extended Address Space.........................................................................................................................................417
Stateless Autoconguration.................................................................................................................................... 417
IPv6 Headers.............................................................................................................................................................417
IPv6 Header Fields................................................................................................................................................... 418
Extension Header Fields..........................................................................................................................................420
Addressing................................................................................................................................................................. 421
Implementing IPv6 with Dell Networking OS............................................................................................................. 422
ICMPv6........................................................................................................................................................................... 423
Path MTU Discovery..................................................................................................................................................... 424
IPv6 Neighbor Discovery.............................................................................................................................................. 424
IPv6 Neighbor Discovery of MTU Packets...........................................................................................................425
Conguration Task List for IPv6 RDNSS.................................................................................................................... 425
Conguring the IPv6 Recursive DNS Server....................................................................................................... 425
Debugging IPv6 RDNSS Information Sent to the Host ..................................................................................... 426
Displaying IPv6 RDNSS Information......................................................................................................................426
Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 427
Conguration Tasks for IPv6........................................................................................................................................ 427
Adjusting Your CAM-Prole.................................................................................................................................... 427
Assigning an IPv6 Address to an Interface...........................................................................................................428
Assigning a Static IPv6 Route................................................................................................................................429
Conguring Telnet with IPv6..................................................................................................................................429
SNMP over IPv6......................................................................................................................................................429
Displaying IPv6 Information....................................................................................................................................430
Contents
15
Displaying an IPv6 Interface Information.............................................................................................................. 430
Showing IPv6 Routes...............................................................................................................................................431
Showing the Running-Conguration for an Interface......................................................................................... 432
Clearing IPv6 Routes...............................................................................................................................................432
Conguring IPv6 RA Guard.......................................................................................................................................... 433
Conguring IPv6 RA Guard on an Interface.........................................................................................................435
Monitoring IPv6 RA Guard..................................................................................................................................... 435
25 iSCSI Optimization.................................................................................................................................. 436
iSCSI Optimization Overview....................................................................................................................................... 436
Monitoring iSCSI Trac Flows............................................................................................................................... 437
Application of Quality of Service to iSCSI Trac Flows..................................................................................... 438
Information Monitored in iSCSI Trac Flows....................................................................................................... 438
Detection and Auto-Conguration for Dell EqualLogic Arrays........................................................................... 439
Conguring Detection and Ports for Dell Compellent Arrays.............................................................................439
Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer.................................................................440
Enable and Disable iSCSI Optimization................................................................................................................. 440
Default iSCSI Optimization Values................................................................................................................................441
iSCSI Optimization Prerequisites.................................................................................................................................. 441
Conguring iSCSI Optimization.................................................................................................................................... 441
Displaying iSCSI Optimization Information..................................................................................................................443
26 Intermediate System to Intermediate System.......................................................................................... 445
IS-IS Protocol Overview............................................................................................................................................... 445
IS-IS Addressing.............................................................................................................................................................445
Multi-Topology IS-IS...................................................................................................................................................... 446
Transition Mode....................................................................................................................................................... 446
Interface Support.....................................................................................................................................................446
Adjacencies...............................................................................................................................................................447
Graceful Restart.............................................................................................................................................................447
Timers........................................................................................................................................................................447
Implementation Information..........................................................................................................................................447
Conguration Information.............................................................................................................................................448
Conguration Tasks for IS-IS..................................................................................................................................448
Conguring the Distance of a Route.....................................................................................................................456
Changing the IS-Type..............................................................................................................................................456
Redistributing IPv4 Routes.....................................................................................................................................459
Redistributing IPv6 Routes.....................................................................................................................................459
Conguring Authentication Passwords.................................................................................................................460
Setting the Overload Bit..........................................................................................................................................461
Debugging IS-IS........................................................................................................................................................461
IS-IS Metric Styles.........................................................................................................................................................462
Congure Metric Values............................................................................................................................................... 462
Maximum Values in the Routing Table.................................................................................................................. 463
Change the IS-IS Metric Style in One Level Only................................................................................................463
Leaks from One Level to Another..........................................................................................................................464
Sample Congurations..................................................................................................................................................465
16
Contents
27 Link Aggregation Control Protocol (LACP)...............................................................................................468
Introduction to Dynamic LAGs and LACP.................................................................................................................. 468
Important Points to Remember............................................................................................................................. 468
LACP Modes............................................................................................................................................................ 469
Conguring LACP Commands...............................................................................................................................469
LACP Conguration Tasks............................................................................................................................................ 470
Creating a LAG.........................................................................................................................................................470
Conguring the LAG Interfaces as Dynamic........................................................................................................ 470
Setting the LACP Long Timeout............................................................................................................................ 471
Monitoring and Debugging LACP...........................................................................................................................471
Shared LAG State Tracking...........................................................................................................................................472
Conguring Shared LAG State Tracking............................................................................................................... 472
Important Points about Shared LAG State Tracking........................................................................................... 473
LACP Basic Conguration Example.............................................................................................................................474
Congure a LAG on ALPHA....................................................................................................................................474
28 Layer 2.....................................................................................................................................................483
Manage the MAC Address Table................................................................................................................................. 483
Clearing the MAC Address Table........................................................................................................................... 483
Setting the Aging Time for Dynamic Entries........................................................................................................483
Conguring a Static MAC Address........................................................................................................................484
Displaying the MAC Address Table........................................................................................................................ 484
MAC Learning Limit....................................................................................................................................................... 484
Setting the MAC Learning Limit............................................................................................................................ 485
mac learning-limit Dynamic.................................................................................................................................... 485
mac learning-limit mac-address-sticky................................................................................................................. 485
mac learning-limit station-move............................................................................................................................ 486
mac learning-limit no-station-move...................................................................................................................... 486
Learning Limit Violation Actions.............................................................................................................................486
Setting Station Move Violation Actions................................................................................................................ 486
Recovering from Learning Limit and Station Move Violations............................................................................487
Disabling MAC Address Learning on the System.................................................................................................487
NIC Teaming................................................................................................................................................................... 488
Congure Redundant Pairs...........................................................................................................................................489
Important Points about Conguring Redundant Pairs........................................................................................ 490
Far-End Failure Detection............................................................................................................................................. 492
FEFD State Changes...............................................................................................................................................492
Conguring FEFD.................................................................................................................................................... 493
Enabling FEFD on an Interface...............................................................................................................................494
Debugging FEFD......................................................................................................................................................495
29 Link Layer Discovery Protocol (LLDP)......................................................................................................497
802.1AB (LLDP) Overview............................................................................................................................................497
Protocol Data Units..................................................................................................................................................497
Optional TLVs................................................................................................................................................................. 498
Management TLVs.................................................................................................................................................. 498
Contents
17
TIA-1057 (LLDP-MED) Overview................................................................................................................................ 500
TIA Organizationally Specic TLVs........................................................................................................................500
Congure LLDP............................................................................................................................................................. 504
Related Conguration Tasks...................................................................................................................................504
Important Points to Remember............................................................................................................................. 504
LLDP Compatibility..................................................................................................................................................504
CONFIGURATION versus INTERFACE Congurations............................................................................................ 504
Enabling LLDP................................................................................................................................................................505
Disabling and Undoing LLDP..................................................................................................................................505
Advertising TLVs............................................................................................................................................................505
Viewing the LLDP Conguration................................................................................................................................. 506
Viewing Information Advertised by Adjacent LLDP Agents..................................................................................... 507
Conguring LLDPDU Intervals.....................................................................................................................................508
Conguring Transmit and Receive Mode................................................................................................................... 508
Conguring the Time to Live Value............................................................................................................................. 509
Debugging LLDP.............................................................................................................................................................510
Relevant Management Objects..................................................................................................................................... 511
30 Microsoft Network Load Balancing...........................................................................................................516
NLB Unicast Mode Scenario.........................................................................................................................................516
NLB Multicast Mode Scenario......................................................................................................................................516
Limitations of the NLB Feature.....................................................................................................................................517
Microsoft Clustering.......................................................................................................................................................517
Enable and Disable VLAN Flooding ............................................................................................................................. 517
Conguring a Switch for NLB ......................................................................................................................................517
Enabling a Switch for Multicast NLB..................................................................................................................... 518
31 Multicast Source Discovery Protocol (MSDP).......................................................................................... 519
Protocol Overview..........................................................................................................................................................519
Anycast RP.....................................................................................................................................................................520
Implementation Information.......................................................................................................................................... 521
Congure Multicast Source Discovery Protocol.........................................................................................................521
Related Conguration Tasks....................................................................................................................................521
Enable MSDP................................................................................................................................................................. 525
Manage the Source-Active Cache.............................................................................................................................. 526
Viewing the Source-Active Cache.........................................................................................................................526
Limiting the Source-Active Cache.........................................................................................................................526
Clearing the Source-Active Cache........................................................................................................................ 527
Enabling the Rejected Source-Active Cache........................................................................................................527
Accept Source-Active Messages that Fail the RFP Check......................................................................................527
Specifying Source-Active Messages...........................................................................................................................530
Limiting the Source-Active Messages from a Peer....................................................................................................531
Preventing MSDP from Caching a Local Source........................................................................................................531
Preventing MSDP from Caching a Remote Source.................................................................................................. 532
Preventing MSDP from Advertising a Local Source..................................................................................................532
Logging Changes in Peership States...........................................................................................................................533
Terminating a Peership..................................................................................................................................................533
18
Contents
Clearing Peer Statistics.................................................................................................................................................534
Debugging MSDP.......................................................................................................................................................... 534
MSDP with Anycast RP................................................................................................................................................534
Conguring Anycast RP................................................................................................................................................535
Reducing Source-Active Message Flooding.........................................................................................................536
Specifying the RP Address Used in SA Messages.............................................................................................. 536
MSDP Sample Congurations......................................................................................................................................538
32 Multiple Spanning Tree Protocol (MSTP)................................................................................................. 541
Protocol Overview..........................................................................................................................................................541
Spanning Tree Variations...............................................................................................................................................542
Implementation Information....................................................................................................................................542
Congure Multiple Spanning Tree Protocol................................................................................................................542
Related Conguration Tasks...................................................................................................................................542
Enable Multiple Spanning Tree Globally...................................................................................................................... 543
Adding and Removing Interfaces.................................................................................................................................543
Creating Multiple Spanning Tree Instances................................................................................................................ 543
Inuencing MSTP Root Selection................................................................................................................................545
Interoperate with Non-Dell Bridges.............................................................................................................................545
Changing the Region Name or Revision..................................................................................................................... 545
Modifying Global Parameters....................................................................................................................................... 546
Modifying the Interface Parameters............................................................................................................................547
Conguring an EdgePort.............................................................................................................................................. 548
Flush MAC Addresses after a Topology Change....................................................................................................... 549
MSTP Sample Congurations......................................................................................................................................549
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................549
Debugging and Verifying MSTP Congurations........................................................................................................ 552
33 Multicast Features...................................................................................................................................554
Enabling IP Multicast.....................................................................................................................................................554
Implementation Information......................................................................................................................................... 554
Multicast Policies...........................................................................................................................................................555
IPv4 Multicast Policies............................................................................................................................................555
34 Object Tracking....................................................................................................................................... 563
Object Tracking Overview............................................................................................................................................ 563
Track Layer 2 Interfaces..........................................................................................................................................564
Track Layer 3 Interfaces..........................................................................................................................................564
Track IPv4 and IPv6 Routes...................................................................................................................................565
Set Tracking Delays................................................................................................................................................. 566
VRRP Object Tracking............................................................................................................................................ 566
Object Tracking Conguration..................................................................................................................................... 566
Tracking a Layer 2 Interface...................................................................................................................................566
Tracking a Layer 3 Interface................................................................................................................................... 567
Track an IPv4/IPv6 Route...................................................................................................................................... 568
Displaying Tracked Objects........................................................................................................................................... 572
Contents
19
35 Open Shortest Path First (OSPFv2 and OSPFv3).................................................................................... 574
Protocol Overview......................................................................................................................................................... 574
Autonomous System (AS) Areas............................................................................................................................574
Area Types................................................................................................................................................................ 575
Networks and Neighbors........................................................................................................................................ 576
Router Types.............................................................................................................................................................576
Designated and Backup Designated Routers....................................................................................................... 578
Link-State Advertisements (LSAs)........................................................................................................................ 578
Router Priority and Cost......................................................................................................................................... 579
OSPF with Dell Networking OS...................................................................................................................................580
Graceful Restart....................................................................................................................................................... 581
Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................582
Multi-Process OSPFv2 with VRF..........................................................................................................................582
RFC-2328 Compliant OSPF Flooding................................................................................................................... 582
OSPF ACK Packing................................................................................................................................................. 583
Setting OSPF Adjacency with Cisco Routers...................................................................................................... 583
Conguration Information.............................................................................................................................................584
Conguration Task List for OSPFv2 (OSPF for IPv4)........................................................................................ 584
Sample Congurations for OSPFv2.............................................................................................................................597
Basic OSPFv2 Router Topology............................................................................................................................. 597
OSPF Area 0 — Te 1/1 and 1/2..............................................................................................................................597
OSPF Area 0 — Te 3/1 and 3/2............................................................................................................................598
OSPF Area 0 — Te 2/1 and 2/2............................................................................................................................598
Conguration Task List for OSPFv3 (OSPF for IPv6).............................................................................................. 598
Enabling IPv6 Unicast Routing...............................................................................................................................599
Applying cost for OSPFv3......................................................................................................................................599
Assigning IPv6 Addresses on an Interface........................................................................................................... 599
Assigning Area ID on an Interface..........................................................................................................................600
Assigning OSPFv3 Process ID and Router ID Globally........................................................................................600
Assigning OSPFv3 Process ID and Router ID to a VRF.......................................................................................601
Conguring Stub Areas............................................................................................................................................601
Conguring Passive-Interface................................................................................................................................ 601
Redistributing Routes..............................................................................................................................................602
Conguring a Default Route...................................................................................................................................602
Enabling OSPFv3 Graceful Restart....................................................................................................................... 603
OSPFv3 Authentication Using IPsec.....................................................................................................................605
Troubleshooting OSPFv3..........................................................................................................................................611
36 Policy-based Routing (PBR).....................................................................................................................612
Overview......................................................................................................................................................................... 612
Implementing PBR..........................................................................................................................................................613
Conguration Task List for Policy-based Routing.......................................................................................................613
PBR Exceptions (Permit)........................................................................................................................................ 614
Create a Redirect List.................................................................................................................................................... 614
Create a Rule for a Redirect-list................................................................................................................................... 614
Apply a Redirect-list to an Interface using a Redirect-group.................................................................................... 616
20
Contents
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Dell PowerSwitch S4820T User guide

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Brand
Dell
Model
PowerSwitch S4820T
Category
Software
Type
User guide
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