Dell S4048-ON User manual

Dell Conguration Guide for the S4048–ON System
9.9(0.0)

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Copyright ©2015 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. Dell™
and the Dell logo are trademarks of Dell Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be
trademarks of their respective companies.
2015 - 09
Rev. A00

Contents
1 About this Guide............................................................................................................ 34
Audience.......................................................................................................................................................................... 34
Conventions..................................................................................................................................................................... 34
Related Documents.......................................................................................................................................................... 34
2 Conguration Fundamentals......................................................................................... 35
Accessing the Command Line.......................................................................................................................................... 35
CLI Modes........................................................................................................................................................................35
Navigating CLI Modes................................................................................................................................................ 37
The do Command.............................................................................................................................................................39
Undoing Commands.........................................................................................................................................................40
Obtaining Help..................................................................................................................................................................40
Entering and Editing Commands....................................................................................................................................... 41
Command History.............................................................................................................................................................42
Filtering show Command Outputs.................................................................................................................................... 42
Multiple Users in Conguration Mode...............................................................................................................................43
3 Getting Started............................................................................................................. 44
Console Access................................................................................................................................................................ 44
Serial Console.............................................................................................................................................................44
Accessing the CLI Interface and Running Scripts Using SSH........................................................................................... 45
Entering CLI commands Using an SSH Connection....................................................................................................45
Executing Local CLI Scripts Using an SSH Connection.............................................................................................. 45
Default Conguration....................................................................................................................................................... 46
Conguring a Host Name.................................................................................................................................................46
Accessing the System Remotely...................................................................................................................................... 46
Accessing the System Remotely................................................................................................................................ 46
Congure the Management Port IP Address.............................................................................................................. 47
Congure a Management Route.................................................................................................................................47
Conguring a Username and Password...................................................................................................................... 47
Conguring the Enable Password..................................................................................................................................... 47
Conguration File Management........................................................................................................................................48
Copy Files to and from the System.............................................................................................................................48
Mounting an NFS File System.................................................................................................................................... 49
Save the Running-Conguration................................................................................................................................ 50
Congure the Overload Bit for a Startup Scenario......................................................................................................51
Viewing Files............................................................................................................................................................... 51
Compressing Conguration Files................................................................................................................................ 52
Managing the File System................................................................................................................................................ 54
Enabling Software Features on Devices Using a Command Option.................................................................................. 55
View Command History....................................................................................................................................................55
Upgrading Dell Networking OS.........................................................................................................................................56
3

Using Hashes to Verify Software Images Before Installation.............................................................................................56
Using HTTP for File Transfers...........................................................................................................................................57
4 Management.................................................................................................................58
Conguring Privilege Levels............................................................................................................................................. 58
Creating a Custom Privilege Level..............................................................................................................................58
Removing a Command from EXEC Mode.................................................................................................................. 58
Moving a Command from EXEC Privilege Mode to EXEC Mode................................................................................58
Allowing Access to CONFIGURATION Mode Commands...........................................................................................58
Allowing Access to Dierent Modes...........................................................................................................................59
Applying a Privilege Level to a Username................................................................................................................... 60
Applying a Privilege Level to a Terminal Line................................................................................................................61
Conguring Logging.......................................................................................................................................................... 61
Audit and Security Logs.............................................................................................................................................. 61
Conguring Logging Format .....................................................................................................................................63
Display the Logging Buer and the Logging Conguration......................................................................................... 63
Setting Up a Secure Connection to a Syslog Server...................................................................................................64
Sending System Messages to a Syslog Server...........................................................................................................65
Track Login Activity..........................................................................................................................................................65
Restrictions for Tracking Login Activity...................................................................................................................... 65
Conguring Login Activity Tracking............................................................................................................................ 65
Display Login Statistics...............................................................................................................................................66
Limit Concurrent Login Sessions.......................................................................................................................................67
Restrictions for Limiting the Number of Concurrent Sessions.................................................................................... 67
Conguring Concurrent Session Limit.........................................................................................................................67
Enabling the System to Clear Existing Sessions..........................................................................................................67
Log Messages in the Internal Buer................................................................................................................................. 68
Conguration Task List for System Log Management................................................................................................ 68
Disabling System Logging.................................................................................................................................................68
Sending System Messages to a Syslog Server................................................................................................................. 69
Conguring a UNIX System as a Syslog Server..........................................................................................................69
Changing System Logging Settings..................................................................................................................................69
Display the Logging Buer and the Logging Conguration............................................................................................... 70
Conguring a UNIX Logging Facility Level......................................................................................................................... 71
Synchronizing Log Messages............................................................................................................................................72
Enabling Timestamp on Syslog Messages.........................................................................................................................72
File Transfer Services........................................................................................................................................................73
Conguration Task List for File Transfer Services........................................................................................................73
Enabling the FTP Server.............................................................................................................................................73
Conguring FTP Server Parameters........................................................................................................................... 73
Conguring FTP Client Parameters.............................................................................................................................74
Terminal Lines................................................................................................................................................................... 74
Denying and Permitting Access to a Terminal Line...................................................................................................... 74
Conguring Login Authentication for Terminal Lines................................................................................................... 75
Setting Timeout for EXEC Privilege Mode........................................................................................................................76
Using Telnet to get to Another Network Device................................................................................................................77
4

Lock CONFIGURATION Mode..........................................................................................................................................77
Viewing the Conguration Lock Status.......................................................................................................................78
Restoring the Factory Default Settings.............................................................................................................................78
Important Points to Remember.................................................................................................................................. 78
Restoring Factory Default Environment Variables....................................................................................................... 79
5 802.1ag.......................................................................................................................... 81
Ethernet CFM...................................................................................................................................................................81
Maintenance Domains...................................................................................................................................................... 82
Maintenance Points..........................................................................................................................................................82
Maintenance End Points...................................................................................................................................................83
Implementation Information..............................................................................................................................................83
Conguring the CFM........................................................................................................................................................84
Related Conguration Tasks....................................................................................................................................... 84
Enable Ethernet CFM.......................................................................................................................................................84
Creating a Maintenance Domain.......................................................................................................................................84
Creating a Maintenance Association.................................................................................................................................85
Create Maintenance Points.............................................................................................................................................. 85
Creating a Maintenance End Point............................................................................................................................. 85
Creating a Maintenance Intermediate Point................................................................................................................86
Displaying the MP Databases..................................................................................................................................... 86
Continuity Check Messages............................................................................................................................................. 87
Enabling CCM............................................................................................................................................................ 88
Enabling Cross-Checking............................................................................................................................................88
Sending Loopback Messages and Responses...................................................................................................................88
Sending Linktrace Messages and Responses................................................................................................................... 88
Caching Link Trace..................................................................................................................................................... 89
Enabling CFM SNMP Traps..............................................................................................................................................90
Displaying Ethernet CFM Statistics...................................................................................................................................91
6 802.1X........................................................................................................................... 93
Port-Authentication Process............................................................................................................................................ 94
EAP over RADIUS...................................................................................................................................................... 95
Conguring 802.1X........................................................................................................................................................... 96
Related Conguration Tasks....................................................................................................................................... 96
Important Points to Remember........................................................................................................................................ 96
Enabling 802.1X................................................................................................................................................................ 97
Conguring Request Identity Re-Transmissions................................................................................................................ 98
Conguring a Quiet Period after a Failed Authentication............................................................................................ 99
Forcibly Authorizing or Unauthorizing a Port.................................................................................................................. 100
Re-Authenticating a Port................................................................................................................................................ 100
Conguring Timeouts...................................................................................................................................................... 101
Conguring Dynamic VLAN Assignment with Port Authentication..................................................................................102
Guest and Authentication-Fail VLANs.............................................................................................................................103
Conguring a Guest VLAN........................................................................................................................................104
Conguring an Authentication-Fail VLAN................................................................................................................. 104
5

7 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM).... 106
Optimizing CAM Utilization During the Attachment of ACLs to VLANs.......................................................................... 106
Guidelines for Conguring ACL VLAN Groups.................................................................................................................107
Conguring ACL VLAN Groups and Conguring FP Blocks for VLAN Parameters.......................................................... 107
Conguring ACL VLAN Groups................................................................................................................................. 107
Conguring FP Blocks for VLAN Parameters............................................................................................................108
Viewing CAM Usage.......................................................................................................................................................109
Allocating FP Blocks for VLAN Processes....................................................................................................................... 110
8 Access Control Lists (ACLs)..........................................................................................111
IP Access Control Lists (ACLs).........................................................................................................................................111
CAM Usage............................................................................................................................................................... 112
Implementing ACLs on Dell Networking OS............................................................................................................... 113
Important Points to Remember........................................................................................................................................114
Conguration Task List for Route Maps..................................................................................................................... 114
Conguring Match Routes.........................................................................................................................................116
Conguring Set Conditions........................................................................................................................................ 117
Congure a Route Map for Route Redistribution....................................................................................................... 118
Congure a Route Map for Route Tagging.................................................................................................................119
Continue Clause........................................................................................................................................................ 119
IP Fragment Handling...................................................................................................................................................... 119
IP Fragments ACL Examples.....................................................................................................................................120
Layer 4 ACL Rules Examples.....................................................................................................................................120
Congure a Standard IP ACL........................................................................................................................................... 121
Conguring a Standard IP ACL Filter.........................................................................................................................122
Congure an Extended IP ACL........................................................................................................................................123
Conguring Filters with a Sequence Number............................................................................................................ 123
Conguring Filters Without a Sequence Number...................................................................................................... 124
Congure Layer 2 and Layer 3 ACLs............................................................................................................................... 125
Assign an IP ACL to an Interface.....................................................................................................................................125
Applying an IP ACL......................................................................................................................................................... 125
Counting ACL Hits.................................................................................................................................................... 126
Congure Ingress ACLs...................................................................................................................................................126
Congure Egress ACLs....................................................................................................................................................127
Applying Egress Layer 3 ACLs (Control-Plane)..........................................................................................................128
IP Prex Lists..................................................................................................................................................................128
Implementation Information...................................................................................................................................... 129
Conguration Task List for Prex Lists......................................................................................................................129
ACL Resequencing..........................................................................................................................................................132
Resequencing an ACL or Prex List.......................................................................................................................... 133
Route Maps.................................................................................................................................................................... 134
Implementation Information...................................................................................................................................... 134
Logging of ACL Processes.............................................................................................................................................. 134
Guidelines for Conguring ACL Logging....................................................................................................................135
Conguring ACL Logging.......................................................................................................................................... 136
6

Flow-Based Monitoring Support for ACLs...................................................................................................................... 136
Behavior of Flow-Based Monitoring.......................................................................................................................... 137
Enabling Flow-Based Monitoring...............................................................................................................................138
Conguring UDF ACL..................................................................................................................................................... 139
9 Bidirectional Forwarding Detection (BFD)....................................................................142
How BFD Works............................................................................................................................................................. 142
BFD Packet Format.................................................................................................................................................. 143
BFD Sessions............................................................................................................................................................144
BFD Three-Way Handshake...................................................................................................................................... 145
Session State Changes............................................................................................................................................. 147
Important Points to Remember....................................................................................................................................... 147
Congure BFD................................................................................................................................................................ 147
Congure BFD for Physical Ports..............................................................................................................................148
Congure BFD for Static Routes............................................................................................................................... 151
Congure BFD for OSPF.......................................................................................................................................... 152
Congure BFD for OSPFv3.......................................................................................................................................154
Congure BFD for IS-IS............................................................................................................................................ 156
Congure BFD for BGP............................................................................................................................................ 158
Congure BFD for VRRP.......................................................................................................................................... 164
Conguring Protocol Liveness...................................................................................................................................167
Troubleshooting BFD.................................................................................................................................................167
10 Border Gateway Protocol IPv4 (BGPv4).................................................................... 169
Autonomous Systems (AS).............................................................................................................................................169
Sessions and Peers..........................................................................................................................................................171
Establish a Session.....................................................................................................................................................171
Route Reectors............................................................................................................................................................. 172
BGP Attributes................................................................................................................................................................173
Best Path Selection Criteria...................................................................................................................................... 173
Weight...................................................................................................................................................................... 175
Local Preference....................................................................................................................................................... 175
Multi-Exit Discriminators (MEDs)..............................................................................................................................176
Origin........................................................................................................................................................................ 177
AS Path.....................................................................................................................................................................177
Next Hop.................................................................................................................................................................. 178
Multiprotocol BGP...........................................................................................................................................................178
Implement BGP with Dell Networking OS....................................................................................................................... 179
Additional Path (Add-Path) Support......................................................................................................................... 179
Advertise IGP Cost as MED for Redistributed Routes...............................................................................................179
Ignore Router-ID in Best-Path Calculation.................................................................................................................180
Four-Byte AS Numbers.............................................................................................................................................180
AS4 Number Representation.................................................................................................................................... 180
AS Number Migration............................................................................................................................................... 182
BGP4 Management Information Base (MIB).............................................................................................................183
Important Points to Remember.................................................................................................................................183
7

Conguration Information............................................................................................................................................... 184
BGP Conguration..........................................................................................................................................................184
Enabling BGP............................................................................................................................................................185
Conguring AS4 Number Representations................................................................................................................188
Conguring Peer Groups...........................................................................................................................................189
Conguring BGP Fast Fall-Over................................................................................................................................192
Conguring Passive Peering..................................................................................................................................... 194
Maintaining Existing AS Numbers During an AS Migration........................................................................................ 194
Allowing an AS Number to Appear in its Own AS Path..............................................................................................195
Enabling Graceful Restart......................................................................................................................................... 196
Enabling Neighbor Graceful Restart.......................................................................................................................... 197
Filtering on an AS-Path Attribute.............................................................................................................................. 197
Regular Expressions as Filters...................................................................................................................................198
Redistributing Routes...............................................................................................................................................200
Enabling Additional Paths.........................................................................................................................................200
Conguring IP Community Lists................................................................................................................................201
Conguring an IP Extended Community List............................................................................................................ 202
Filtering Routes with Community Lists..................................................................................................................... 203
Manipulating the COMMUNITY Attribute................................................................................................................ 203
Changing MED Attributes........................................................................................................................................ 205
Changing the LOCAL_PREFERENCE Attribute.......................................................................................................205
Changing the NEXT_HOP Attribute.........................................................................................................................206
Changing the WEIGHT Attribute..............................................................................................................................206
Enabling Multipath................................................................................................................................................... 206
Filtering BGP Routes................................................................................................................................................ 207
Filtering BGP Routes Using Route Maps..................................................................................................................208
Filtering BGP Routes Using AS-PATH Information................................................................................................... 209
Conguring BGP Route Reectors...........................................................................................................................209
Aggregating Routes.................................................................................................................................................. 210
Conguring BGP Confederations..............................................................................................................................210
Enabling Route Flap Dampening................................................................................................................................ 211
Changing BGP Timers...............................................................................................................................................213
Enabling BGP Neighbor Soft-Reconguration...........................................................................................................213
Route Map Continue.................................................................................................................................................214
Enabling MBGP Congurations.......................................................................................................................................215
BGP Regular Expression Optimization............................................................................................................................ 216
Debugging BGP.............................................................................................................................................................. 216
Storing Last and Bad PDUs.......................................................................................................................................217
Capturing PDUs........................................................................................................................................................218
PDU Counters...........................................................................................................................................................219
Sample Congurations....................................................................................................................................................219
11 Content Addressable Memory (CAM).........................................................................225
CAM Allocation.............................................................................................................................................................. 225
Test CAM Usage............................................................................................................................................................ 227
View CAM-ACL Settings................................................................................................................................................ 227
8

View CAM Usage...........................................................................................................................................................229
CAM Optimization..........................................................................................................................................................229
Troubleshoot CAM Proling............................................................................................................................................229
CAM Prole Mismatches..........................................................................................................................................229
QoS CAM Region Limitation.....................................................................................................................................230
12 Control Plane Policing (CoPP)....................................................................................231
Congure Control Plane Policing.................................................................................................................................... 232
Conguring CoPP for Protocols............................................................................................................................... 233
Conguring CoPP for CPU Queues..........................................................................................................................234
CoPP for OSPFv3 Packets...................................................................................................................................... 235
Conguring CoPP for OSPFv3.................................................................................................................................238
Displaying CoPP Conguration ................................................................................................................................239
13 Data Center Bridging (DCB)....................................................................................... 241
Ethernet Enhancements in Data Center Bridging............................................................................................................241
Priority-Based Flow Control..................................................................................................................................... 242
Enhanced Transmission Selection.............................................................................................................................243
Data Center Bridging Exchange Protocol (DCBx).....................................................................................................244
Data Center Bridging in a Trac Flow...................................................................................................................... 244
Enabling Data Center Bridging........................................................................................................................................244
DCB Maps and its Attributes....................................................................................................................................245
Data Center Bridging: Default Conguration.................................................................................................................. 246
Conguring Priority-Based Flow Control........................................................................................................................ 246
Conguring Lossless Queues....................................................................................................................................247
Conguring PFC in a DCB Map......................................................................................................................................248
PFC Conguration Notes......................................................................................................................................... 248
PFC Prerequisites and Restrictions.......................................................................................................................... 249
Applying a DCB Map on a Port.......................................................................................................................................250
Conguring PFC without a DCB Map............................................................................................................................ 250
Conguring Lossless QueuesExample:...................................................................................................................... 251
Priority-Based Flow Control Using Dynamic Buer Method...........................................................................................252
Pause and Resume of Trac....................................................................................................................................252
Buer Sizes for Lossless or PFC Packets.................................................................................................................252
Behavior of Tagged Packets...........................................................................................................................................253
Conguration Example for DSCP and PFC Priorities......................................................................................................253
Using PFC to Manage Converged Ethernet Trac........................................................................................................ 254
Congure Enhanced Transmission Selection.................................................................................................................. 254
ETS Prerequisites and Restrictions...........................................................................................................................254
Creating an ETS Priority Group................................................................................................................................ 255
ETS Operation with DCBx........................................................................................................................................256
Conguring Bandwidth Allocation for DCBx CIN......................................................................................................256
Conguring ETS in a DCB Map................................................................................................................................ 257
Hierarchical Scheduling in ETS Output Policies.............................................................................................................. 258
Using ETS to Manage Converged Ethernet Trac.........................................................................................................259
Applying DCB Policies in a Switch Stack........................................................................................................................ 259
9

Congure a DCBx Operation..........................................................................................................................................259
DCBx Operation....................................................................................................................................................... 259
DCBx Port Roles...................................................................................................................................................... 260
DCB Conguration Exchange....................................................................................................................................261
Conguration Source Election...................................................................................................................................261
Propagation of DCB Information.............................................................................................................................. 262
Auto-Detection and Manual Conguration of the DCBx Version.............................................................................. 262
DCBx Example......................................................................................................................................................... 262
DCBx Prerequisites and Restrictions........................................................................................................................ 263
Conguring DCBx.................................................................................................................................................... 263
Verifying the DCB Conguration.....................................................................................................................................267
QoS dot1p Trac Classication and Queue Assignment................................................................................................. 277
Conguring the Dynamic Buer Method........................................................................................................................278
Sample DCB Conguration.............................................................................................................................................279
PFC and ETS Conguration Command Examples.................................................................................................... 280
14 Dynamic Host Conguration Protocol (DHCP)........................................................... 281
DHCP Packet Format and Options................................................................................................................................. 281
Assign an IP Address using DHCP.................................................................................................................................. 283
Implementation Information............................................................................................................................................283
Congure the System to be a DHCP Server.................................................................................................................. 284
Conguring the Server for Automatic Address Allocation.........................................................................................284
Specifying a Default Gateway.................................................................................................................................. 286
Congure a Method of Hostname Resolution.......................................................................................................... 286
Using DNS for Address Resolution........................................................................................................................... 286
Using NetBIOS WINS for Address Resolution.......................................................................................................... 286
Creating Manual Binding Entries.............................................................................................................................. 286
Debugging the DHCP Server....................................................................................................................................287
Using DHCP Clear Commands................................................................................................................................. 287
Congure the System to be a Relay Agent..................................................................................................................... 287
Congure the System to be a DHCP Client....................................................................................................................289
Conguring the DHCP Client System.......................................................................................................................289
DHCP Client on a Management Interface................................................................................................................ 290
DHCP Client Operation with Other Features............................................................................................................ 291
Congure the System for User Port Stacking (Option 230)...........................................................................................292
Congure Secure DHCP.................................................................................................................................................292
Option 82.................................................................................................................................................................292
DHCP Snooping....................................................................................................................................................... 293
Drop DHCP Packets on Snooped VLANs Only.........................................................................................................296
Dynamic ARP Inspection..........................................................................................................................................296
Conguring Dynamic ARP Inspection....................................................................................................................... 297
Source Address Validation..............................................................................................................................................298
Enabling IP Source Address Validation......................................................................................................................298
DHCP MAC Source Address Validation.................................................................................................................... 299
Enabling IP+MAC Source Address Validation........................................................................................................... 299
Viewing the Number of SAV Dropped Packets.........................................................................................................299
10

Clearing the Number of SAV Dropped Packets........................................................................................................ 300
15 Equal Cost Multi-Path (ECMP).................................................................................. 301
ECMP for Flow-Based Anity........................................................................................................................................ 301
Conguring the Hash Algorithm................................................................................................................................301
Enabling Deterministic ECMP Next Hop................................................................................................................... 301
Conguring the Hash Algorithm Seed.......................................................................................................................301
Link Bundle Monitoring...................................................................................................................................................302
Managing ECMP Group Paths................................................................................................................................. 303
Creating an ECMP Group Bundle.............................................................................................................................303
Modifying the ECMP Group Threshold.................................................................................................................... 303
RTAG7........................................................................................................................................................................... 304
Flow-based Hashing for ECMP......................................................................................................................................305
16 FCoE Transit..............................................................................................................308
Fibre Channel over Ethernet.......................................................................................................................................... 308
Ensure Robustness in a Converged Ethernet Network...................................................................................................308
FIP Snooping on Ethernet Bridges................................................................................................................................. 309
FIP Snooping in a Switch Stack....................................................................................................................................... 311
Using FIP Snooping......................................................................................................................................................... 311
FIP Snooping Prerequisites........................................................................................................................................ 311
Important Points to Remember.................................................................................................................................312
Enabling the FCoE Transit Feature............................................................................................................................312
Enable FIP Snooping on VLANs................................................................................................................................ 313
Congure the FC-MAP Value....................................................................................................................................313
Congure a Port for a Bridge-to-Bridge Link.............................................................................................................313
Congure a Port for a Bridge-to-FCF Link................................................................................................................ 313
Impact on Other Software Features..........................................................................................................................313
FIP Snooping Restrictions.........................................................................................................................................314
Conguring FIP Snooping......................................................................................................................................... 314
Displaying FIP Snooping Information............................................................................................................................... 315
FCoE Transit Conguration Example.............................................................................................................................. 320
17 FIPS Cryptography.................................................................................................... 322
Conguration Tasks........................................................................................................................................................322
Preparing the System.....................................................................................................................................................322
Enabling FIPS Mode.......................................................................................................................................................322
Generating Host-Keys.................................................................................................................................................... 323
Monitoring FIPS Mode Status........................................................................................................................................ 323
Disabling FIPS Mode...................................................................................................................................................... 326
18 Force10 Resilient Ring Protocol (FRRP).....................................................................327
Protocol Overview..........................................................................................................................................................327
Ring Status...............................................................................................................................................................327
Multiple FRRP Rings................................................................................................................................................ 328
Important FRRP Points............................................................................................................................................ 329
11

Important FRRP Concepts.......................................................................................................................................330
Implementing FRRP........................................................................................................................................................ 331
FRRP Conguration........................................................................................................................................................ 331
Creating the FRRP Group......................................................................................................................................... 331
Conguring the Control VLAN.................................................................................................................................. 331
Conguring and Adding the Member VLANs............................................................................................................333
Setting the FRRP Timers......................................................................................................................................... 334
Clearing the FRRP Counters.................................................................................................................................... 334
Viewing the FRRP Conguration..............................................................................................................................334
Viewing the FRRP Information................................................................................................................................. 334
Troubleshooting FRRP................................................................................................................................................... 335
Conguration Checks...............................................................................................................................................335
Sample Conguration and Topology............................................................................................................................... 335
19 GARP VLAN Registration Protocol (GVRP)............................................................... 337
Important Points to Remember...................................................................................................................................... 337
Congure GVRP.............................................................................................................................................................338
Related Conguration Tasks..................................................................................................................................... 338
Enabling GVRP Globally..................................................................................................................................................338
Enabling GVRP on a Layer 2 Interface............................................................................................................................339
Congure GVRP Registration.........................................................................................................................................339
Congure a GARP Timer................................................................................................................................................340
RPM Redundancy.......................................................................................................................................................... 340
20 High Availability (HA).................................................................................................341
Component Redundancy................................................................................................................................................ 341
Automatic and Manual Stack Unit Failover................................................................................................................341
Synchronization between Management and Standby Units..................................................................................... 342
Forcing an Stack Unit Failover..................................................................................................................................342
Specifying an Auto-Failover Limit............................................................................................................................. 342
Disabling Auto-Reboot............................................................................................................................................. 343
Manually Synchronizing Management and Standby Units........................................................................................ 343
Pre-Conguring a Stack Unit Slot.................................................................................................................................. 343
Removing a Provisioned Logical Stack Unit....................................................................................................................343
Hitless Behavior............................................................................................................................................................. 343
Graceful Restart.............................................................................................................................................................344
Software Resiliency........................................................................................................................................................344
Software Component Health Monitoring..................................................................................................................344
System Health Monitoring........................................................................................................................................344
Failure and Event Logging........................................................................................................................................ 344
Hot-Lock Behavior......................................................................................................................................................... 345
21 Internet Group Management Protocol (IGMP)...........................................................346
IGMP Implementation Information..................................................................................................................................346
IGMP Protocol Overview............................................................................................................................................... 346
IGMP Version 2........................................................................................................................................................ 346
12

IGMP Version 3........................................................................................................................................................ 347
Congure IGMP............................................................................................................................................................. 350
Related Conguration Tasks.....................................................................................................................................350
Viewing IGMP Enabled Interfaces................................................................................................................................... 351
Selecting an IGMP Version..............................................................................................................................................351
Viewing IGMP Groups.....................................................................................................................................................351
Adjusting Timers.............................................................................................................................................................352
Adjusting Query and Response Timers.....................................................................................................................352
Preventing a Host from Joining a Group........................................................................................................................ 353
Enabling IGMP Immediate-Leave................................................................................................................................... 355
IGMP Snooping..............................................................................................................................................................356
IGMP Snooping Implementation Information............................................................................................................356
Conguring IGMP Snooping.....................................................................................................................................356
Removing a Group-Port Association.........................................................................................................................357
Disabling Multicast Flooding..................................................................................................................................... 357
Specifying a Port as Connected to a Multicast Router............................................................................................. 357
Conguring the Switch as Querier............................................................................................................................357
Fast Convergence after MSTP Topology Changes.........................................................................................................358
Egress Interface Selection (EIS) for HTTP and IGMP Applications................................................................................ 358
Protocol Separation..................................................................................................................................................359
Enabling and Disabling Management Egress Interface Selection.............................................................................. 360
Handling of Management Route Conguration........................................................................................................ 360
Handling of Switch-Initiated Trac........................................................................................................................... 361
Handling of Switch-Destined Trac..........................................................................................................................361
Handling of Transit Trac (Trac Separation)......................................................................................................... 362
Mapping of Management Applications and Trac Type........................................................................................... 362
Behavior of Various Applications for Switch-Initiated Trac ....................................................................................363
Behavior of Various Applications for Switch-Destined Trac .................................................................................. 364
Interworking of EIS With Various Applications..........................................................................................................365
Designating a Multicast Router Interface....................................................................................................................... 365
22 Interfaces..................................................................................................................366
Basic Interface Conguration......................................................................................................................................... 366
Advanced Interface Conguration..................................................................................................................................366
Interface Types...............................................................................................................................................................367
View Basic Interface Information....................................................................................................................................367
Resetting an Interface to its Factory Default State........................................................................................................ 369
Enabling a Physical Interface..........................................................................................................................................369
Physical Interfaces......................................................................................................................................................... 370
Conguration Task List for Physical Interfaces......................................................................................................... 370
Overview of Layer Modes........................................................................................................................................ 370
Conguring Layer 2 (Data Link) Mode...................................................................................................................... 371
Conguring Layer 2 (Interface) Mode....................................................................................................................... 371
Conguring Layer 3 (Network) Mode....................................................................................................................... 371
Conguring Layer 3 (Interface) Mode...................................................................................................................... 372
Egress Interface Selection (EIS).....................................................................................................................................372
13

Important Points to Remember................................................................................................................................ 373
Conguring EIS........................................................................................................................................................ 373
Management Interfaces................................................................................................................................................. 373
Conguring Management Interfaces........................................................................................................................ 373
Conguring a Management Interface on an Ethernet Port.......................................................................................375
VLAN Interfaces.............................................................................................................................................................375
Loopback Interfaces....................................................................................................................................................... 376
Null Interfaces................................................................................................................................................................ 377
Port Channel Interfaces..................................................................................................................................................377
Port Channel Denition and Standards..................................................................................................................... 377
Port Channel Benets...............................................................................................................................................377
Port Channel Implementation................................................................................................................................... 377
Interfaces in Port Channels...................................................................................................................................... 378
Conguration Tasks for Port Channel Interfaces.......................................................................................................378
Creating a Port Channel........................................................................................................................................... 378
Adding a Physical Interface to a Port Channel..........................................................................................................379
Reassigning an Interface to a New Port Channel..................................................................................................... 380
Conguring the Minimum Oper Up Links in a Port Channel...................................................................................... 381
Adding or Removing a Port Channel from a VLAN....................................................................................................381
Assigning an IP Address to a Port Channel...............................................................................................................382
Deleting or Disabling a Port Channel........................................................................................................................ 383
Load Balancing Through Port Channels....................................................................................................................383
Changing the Hash Algorithm.................................................................................................................................. 383
Bulk Conguration..........................................................................................................................................................384
Interface Range........................................................................................................................................................384
Bulk Conguration Examples....................................................................................................................................384
Dening Interface Range Macros...................................................................................................................................385
Dene the Interface Range...................................................................................................................................... 386
Choosing an Interface-Range Macro........................................................................................................................386
Monitoring and Maintaining Interfaces........................................................................................................................... 386
Maintenance Using TDR...........................................................................................................................................387
Non Dell-Qualied Transceivers......................................................................................................................................388
Splitting QSFP Ports to SFP+ Ports...............................................................................................................................388
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port......................................................................................... 388
Important Points to Remember................................................................................................................................389
Example Scenarios...................................................................................................................................................389
Link Dampening............................................................................................................................................................. 390
Important Points to Remember.................................................................................................................................391
Enabling Link Dampening.......................................................................................................................................... 391
Link Bundle Monitoring...................................................................................................................................................392
Using Ethernet Pause Frames for Flow Control..............................................................................................................393
Enabling Pause Frames............................................................................................................................................ 393
Congure the MTU Size on an Interface........................................................................................................................ 394
Port-Pipes......................................................................................................................................................................395
Auto-Negotiation on Ethernet Interfaces....................................................................................................................... 395
14

Setting the Speed and Duplex Mode of Ethernet Interfaces.................................................................................... 395
Set Auto-Negotiation Options..................................................................................................................................396
View Advanced Interface Information.............................................................................................................................397
Conguring the Interface Sampling Size.................................................................................................................. 398
Dynamic Counters..........................................................................................................................................................399
Clearing Interface Counters..................................................................................................................................... 399
23 Internet Protocol Security (IPSec).............................................................................401
Conguring IPSec ..........................................................................................................................................................401
24 IPv4 Routing............................................................................................................. 403
IP Addresses.................................................................................................................................................................. 403
Implementation Information......................................................................................................................................403
Conguration Tasks for IP Addresses............................................................................................................................. 403
Assigning IP Addresses to an Interface...........................................................................................................................404
Conguring Static Routes.............................................................................................................................................. 404
Congure Static Routes for the Management Interface.................................................................................................405
IPv4 Path MTU Discovery Overview..............................................................................................................................406
Using the Congured Source IP Address in ICMP Messages......................................................................................... 406
Conguring the ICMP Source Interface................................................................................................................... 406
Conguring the Duration to Establish a TCP Connection............................................................................................... 407
Enabling Directed Broadcast...........................................................................................................................................407
Resolution of Host Names..............................................................................................................................................407
Enabling Dynamic Resolution of Host Names.................................................................................................................408
Specifying the Local System Domain and a List of Domains...........................................................................................408
Conguring DNS with Traceroute.................................................................................................................................. 409
ARP............................................................................................................................................................................... 409
Conguration Tasks for ARP........................................................................................................................................... 410
Conguring Static ARP Entries....................................................................................................................................... 410
Enabling Proxy ARP........................................................................................................................................................ 410
Clearing ARP Cache........................................................................................................................................................ 411
ARP Learning via Gratuitous ARP.................................................................................................................................... 411
Enabling ARP Learning via Gratuitous ARP......................................................................................................................411
ARP Learning via ARP Request....................................................................................................................................... 411
Conguring ARP Retries................................................................................................................................................. 412
ICMP.............................................................................................................................................................................. 413
Conguration Tasks for ICMP......................................................................................................................................... 413
Enabling ICMP Unreachable Messages...........................................................................................................................413
UDP Helper.....................................................................................................................................................................413
Congure UDP Helper.............................................................................................................................................. 413
Important Points to Remember.................................................................................................................................413
Enabling UDP Helper.......................................................................................................................................................414
Conguring a Broadcast Address....................................................................................................................................414
Congurations Using UDP Helper................................................................................................................................... 415
UDP Helper with Broadcast-All Addresses......................................................................................................................415
UDP Helper with Subnet Broadcast Addresses...............................................................................................................416
15

UDP Helper with Congured Broadcast Addresses.........................................................................................................416
UDP Helper with No Congured Broadcast Addresses................................................................................................... 417
Troubleshooting UDP Helper........................................................................................................................................... 417
25 IPv6 Routing..............................................................................................................418
Protocol Overview.......................................................................................................................................................... 418
Extended Address Space.......................................................................................................................................... 418
Stateless Autoconguration...................................................................................................................................... 418
IPv6 Headers............................................................................................................................................................ 419
IPv6 Header Fields....................................................................................................................................................419
Extension Header Fields............................................................................................................................................421
Addressing............................................................................................................................................................... 422
Implementing IPv6 with Dell Networking OS..................................................................................................................423
ICMPv6..........................................................................................................................................................................424
Path MTU Discovery......................................................................................................................................................425
IPv6 Neighbor Discovery................................................................................................................................................425
IPv6 Neighbor Discovery of MTU Packets............................................................................................................... 426
Conguration Task List for IPv6 RDNSS........................................................................................................................ 426
Conguring the IPv6 Recursive DNS Server............................................................................................................ 426
Debugging IPv6 RDNSS Information Sent to the Host ............................................................................................427
Displaying IPv6 RDNSS Information......................................................................................................................... 427
Secure Shell (SSH) Over an IPv6 Transport...................................................................................................................428
Conguration Tasks for IPv6.......................................................................................................................................... 428
Adjusting Your CAM-Prole......................................................................................................................................428
Assigning an IPv6 Address to an Interface............................................................................................................... 429
Assigning a Static IPv6 Route.................................................................................................................................. 430
Conguring Telnet with IPv6....................................................................................................................................430
SNMP over IPv6......................................................................................................................................................430
Displaying IPv6 Information.......................................................................................................................................431
Displaying an IPv6 Interface Information................................................................................................................... 431
Showing IPv6 Routes............................................................................................................................................... 432
Showing the Running-Conguration for an Interface............................................................................................... 433
Clearing IPv6 Routes................................................................................................................................................433
Conguring IPv6 RA Guard............................................................................................................................................ 434
Conguring IPv6 RA Guard on an Interface..............................................................................................................435
Monitoring IPv6 RA Guard....................................................................................................................................... 436
26 iSCSI Optimization.................................................................................................... 437
iSCSI Optimization Overview..........................................................................................................................................437
Monitoring iSCSI Trac Flows................................................................................................................................. 438
Application of Quality of Service to iSCSI Trac Flows............................................................................................ 438
Information Monitored in iSCSI Trac Flows............................................................................................................439
Detection and Auto-Conguration for Dell EqualLogic Arrays...................................................................................439
Conguring Detection and Ports for Dell Compellent Arrays.................................................................................... 440
Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer......................................................................... 440
Enable and Disable iSCSI Optimization......................................................................................................................441
16

Default iSCSI Optimization Values...................................................................................................................................441
iSCSI Optimization Prerequisites.................................................................................................................................... 442
Conguring iSCSI Optimization...................................................................................................................................... 442
Displaying iSCSI Optimization Information...................................................................................................................... 444
27 Intermediate System to Intermediate System............................................................ 446
IS-IS Protocol Overview.................................................................................................................................................446
IS-IS Addressing.............................................................................................................................................................446
Multi-Topology IS-IS....................................................................................................................................................... 447
Transition Mode........................................................................................................................................................447
Interface Support..................................................................................................................................................... 447
Adjacencies.............................................................................................................................................................. 447
Graceful Restart.............................................................................................................................................................448
Timers......................................................................................................................................................................448
Implementation Information............................................................................................................................................448
Conguration Information...............................................................................................................................................449
Conguration Tasks for IS-IS....................................................................................................................................449
Conguring the Distance of a Route........................................................................................................................ 457
Changing the IS-Type............................................................................................................................................... 457
Redistributing IPv4 Routes.......................................................................................................................................460
Redistributing IPv6 Routes.......................................................................................................................................460
Conguring Authentication Passwords..................................................................................................................... 461
Setting the Overload Bit...........................................................................................................................................462
Debugging IS-IS....................................................................................................................................................... 462
IS-IS Metric Styles......................................................................................................................................................... 463
Congure Metric Values.................................................................................................................................................463
Maximum Values in the Routing Table...................................................................................................................... 464
Change the IS-IS Metric Style in One Level Only..................................................................................................... 464
Leaks from One Level to Another.............................................................................................................................465
Sample Congurations................................................................................................................................................... 466
28 Link Aggregation Control Protocol (LACP)................................................................469
Introduction to Dynamic LAGs and LACP.......................................................................................................................469
Important Points to Remember................................................................................................................................469
LACP Modes............................................................................................................................................................470
Conguring LACP Commands..................................................................................................................................470
LACP Conguration Tasks...............................................................................................................................................471
Creating a LAG..........................................................................................................................................................471
Conguring the LAG Interfaces as Dynamic..............................................................................................................471
Setting the LACP Long Timeout...............................................................................................................................472
Monitoring and Debugging LACP............................................................................................................................. 472
Shared LAG State Tracking............................................................................................................................................ 473
Conguring Shared LAG State Tracking................................................................................................................... 473
Important Points about Shared LAG State Tracking..................................................................................................474
LACP Basic Conguration Example................................................................................................................................475
Congure a LAG on ALPHA..................................................................................................................................... 475
17

29 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...........................................................................................................................483
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............................................................................................................................... 485
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
NIC Teaming...................................................................................................................................................................487
Congure Redundant Pairs............................................................................................................................................ 488
Important Points about Conguring Redundant Pairs.............................................................................................. 490
Far-End Failure Detection............................................................................................................................................... 491
FEFD State Changes................................................................................................................................................492
Conguring FEFD.....................................................................................................................................................492
Enabling FEFD on an Interface................................................................................................................................. 493
Debugging FEFD......................................................................................................................................................494
30 Link Layer Discovery Protocol (LLDP).......................................................................496
802.1AB (LLDP) Overview............................................................................................................................................. 496
Protocol Data Units..................................................................................................................................................496
Optional TLVs................................................................................................................................................................. 497
Management TLVs................................................................................................................................................... 497
TIA-1057 (LLDP-MED) Overview................................................................................................................................... 499
TIA Organizationally Specic TLVs........................................................................................................................... 499
Congure LLDP............................................................................................................................................................. 503
Related Conguration Tasks.....................................................................................................................................503
Important Points to Remember................................................................................................................................503
LLDP Compatibility.................................................................................................................................................. 503
CONFIGURATION versus INTERFACE Congurations...................................................................................................503
Enabling LLDP............................................................................................................................................................... 504
Disabling and Undoing LLDP.................................................................................................................................... 504
Enabling LLDP on Management Ports........................................................................................................................... 504
Disabling and Undoing LLDP on Management Ports................................................................................................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
18

Conguring the Time to Live Value................................................................................................................................ 509
Debugging LLDP.............................................................................................................................................................510
Relevant Management Objects.......................................................................................................................................510
31 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 ........................................................................................................................................ 518
Enabling a Switch for Multicast NLB.........................................................................................................................518
32 Multicast Source Discovery Protocol (MSDP)........................................................... 519
Protocol Overview.......................................................................................................................................................... 519
Anycast RP.................................................................................................................................................................... 520
Implementation Information............................................................................................................................................520
Congure Multicast Source Discovery Protocol............................................................................................................. 520
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...............................................................................................................................531
Limiting the Source-Active Messages from a Peer.........................................................................................................532
Preventing MSDP from Caching a Local Source............................................................................................................ 532
Preventing MSDP from Caching a Remote Source........................................................................................................ 533
Preventing MSDP from Advertising a Local Source........................................................................................................533
Logging Changes in Peership States.............................................................................................................................. 534
Terminating a Peership...................................................................................................................................................534
Clearing Peer Statistics..................................................................................................................................................535
Debugging MSDP.......................................................................................................................................................... 535
MSDP with Anycast RP................................................................................................................................................. 536
Conguring Anycast RP................................................................................................................................................. 537
Reducing Source-Active Message Flooding............................................................................................................. 538
Specifying the RP Address Used in SA Messages....................................................................................................538
MSDP Sample Congurations.........................................................................................................................................541
33 Multiple Spanning Tree Protocol (MSTP)..................................................................544
Protocol Overview......................................................................................................................................................... 544
Spanning Tree Variations................................................................................................................................................545
Implementation Information..................................................................................................................................... 545
Congure Multiple Spanning Tree Protocol.................................................................................................................... 545
19

Related Conguration Tasks.....................................................................................................................................545
Enable Multiple Spanning Tree Globally.......................................................................................................................... 546
Adding and Removing Interfaces....................................................................................................................................546
Creating Multiple Spanning Tree Instances.....................................................................................................................546
Inuencing MSTP Root Selection...................................................................................................................................547
Interoperate with Non-Dell Bridges................................................................................................................................ 548
Changing the Region Name or Revision......................................................................................................................... 548
Modifying Global Parameters......................................................................................................................................... 549
Modifying the Interface Parameters...............................................................................................................................550
Conguring an EdgePort................................................................................................................................................ 551
Flush MAC Addresses after a Topology Change..............................................................................................................551
MSTP Sample Congurations........................................................................................................................................ 552
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-CongurationSFTOS
Example Running-Conguration...............................................................................................................................552
Debugging and Verifying MSTP Congurations............................................................................................................. 555
34 Multicast Features.................................................................................................... 557
Enabling IP Multicast......................................................................................................................................................557
Implementation Information............................................................................................................................................557
Multicast Policies........................................................................................................................................................... 558
IPv4 Multicast Policies............................................................................................................................................. 558
35 Object Tracking.........................................................................................................565
Object Tracking Overview..............................................................................................................................................565
Track Layer 2 Interfaces...........................................................................................................................................566
Track Layer 3 Interfaces...........................................................................................................................................566
Track IPv4 and IPv6 Routes.....................................................................................................................................566
Set Tracking Delays.................................................................................................................................................. 567
VRRP Object Tracking............................................................................................................................................. 568
Object Tracking Conguration........................................................................................................................................568
Tracking a Layer 2 Interface..................................................................................................................................... 568
Tracking a Layer 3 Interface..................................................................................................................................... 569
Track an IPv4/IPv6 Route........................................................................................................................................ 570
Displaying Tracked Objects............................................................................................................................................. 574
36 Open Shortest Path First (OSPFv2 and OSPFv3)..................................................... 576
Protocol Overview..........................................................................................................................................................576
Autonomous System (AS) Areas.............................................................................................................................. 576
Area Types................................................................................................................................................................577
Networks and Neighbors..........................................................................................................................................578
Router Types............................................................................................................................................................ 578
Designated and Backup Designated Routers............................................................................................................580
Link-State Advertisements (LSAs)...........................................................................................................................580
Router Priority and Cost........................................................................................................................................... 581
OSPF with Dell Networking OS......................................................................................................................................582
Graceful Restart.......................................................................................................................................................583
20