Dell PowerSwitch S4820T User guide

Dell Conguration Guide for the S4820T System

9.8(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.

Dell

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be trademarks of their respective companies.

2015 - 05

Rev. A00

Contents

1 About this Guide............................................................................................................ 33

Audience.......................................................................................................................................................................... 33

Conventions..................................................................................................................................................................... 33

Related Documents.......................................................................................................................................................... 33

2 Conguration Fundamentals..........................................................................................34

Accessing the Command Line.......................................................................................................................................... 34

CLI Modes........................................................................................................................................................................34

Navigating CLI Modes................................................................................................................................................ 36

The do Command.............................................................................................................................................................38

Undoing Commands.........................................................................................................................................................39

Obtaining Help..................................................................................................................................................................40

Entering and Editing Commands...................................................................................................................................... 40

Command History............................................................................................................................................................. 41

Filtering show Command Outputs.....................................................................................................................................41

Multiple Users in Conguration Mode...............................................................................................................................42

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

Managing the File System................................................................................................................................................ 52

Enabling Software Features on Devices Using a Command Option.................................................................................. 52

View Command History....................................................................................................................................................53

Upgrading Dell Networking OS.........................................................................................................................................53

Using HTTP for File Transfers.......................................................................................................................................... 54

3

Using Hashes to Validate Software Images...................................................................................................................... 54

4 Management.................................................................................................................56

Conguring Privilege Levels............................................................................................................................................. 56

Creating a Custom Privilege Level..............................................................................................................................56

Removing a Command from EXEC Mode.................................................................................................................. 56

Moving a Command from EXEC Privilege Mode to EXEC Mode................................................................................56

Allowing Access to CONFIGURATION Mode Commands...........................................................................................56

Allowing Access to the Following Modes.................................................................................................................... 57

Applying a Privilege Level to a Username................................................................................................................... 58

Applying a Privilege Level to a Terminal Line...............................................................................................................59

Conguring Logging......................................................................................................................................................... 59

Audit and Security Logs............................................................................................................................................. 59

Conguring Logging Format ......................................................................................................................................61

Display the Logging Buer and the Logging Conguration..........................................................................................61

Setting Up a Secure Connection to a Syslog Server...................................................................................................62

Log Messages in the Internal Buer................................................................................................................................. 63

Conguration Task List for System Log Management................................................................................................ 63

Disabling System Logging.................................................................................................................................................63

Sending System Messages to a Syslog Server................................................................................................................. 63

Conguring a UNIX System as a Syslog Server..........................................................................................................63

Track Login Activity.......................................................................................................................................................... 64

Restrictions for Tracking Login Activity...................................................................................................................... 64

Conguring Login Activity Tracking............................................................................................................................ 64

Display Login Statistics...............................................................................................................................................65

Limit Concurrent Login Sessions...................................................................................................................................... 65

Restrictions for Limiting the Number of Concurrent Sessions.................................................................................... 66

Conguring Concurrent Session Limit........................................................................................................................ 66

Enabling the System to Clear Existing Sessions......................................................................................................... 66

Changing System Logging Settings.................................................................................................................................. 67

Display the Logging Buer and the Logging Conguration............................................................................................... 68

Conguring a UNIX Logging Facility Level........................................................................................................................ 68

Synchronizing Log Messages........................................................................................................................................... 69

Enabling Timestamp on Syslog Messages.........................................................................................................................70

File Transfer Services....................................................................................................................................................... 70

Conguration Task List for File Transfer Services....................................................................................................... 70

Enabling the FTP Server............................................................................................................................................. 71

Conguring FTP Server Parameters............................................................................................................................71

Conguring FTP Client Parameters............................................................................................................................. 71

Terminal Lines...................................................................................................................................................................72

Denying and Permitting Access to a Terminal Line......................................................................................................72

Conguring Login Authentication for Terminal Lines................................................................................................... 73

Setting Time Out of EXEC Privilege Mode....................................................................................................................... 74

Using Telnet to get to Another Network Device............................................................................................................... 75

Lock CONFIGURATION Mode..........................................................................................................................................75

Viewing the Conguration Lock Status.......................................................................................................................75

4

Recovering from a Forgotten Password............................................................................................................................76

Recovering from a Forgotten Enable Password.......................................................................................................... 77

Recovering from a Failed Start......................................................................................................................................... 77

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

Enabling 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................................................................................................................... 89

Caching Link Trace.....................................................................................................................................................89

Enabling CFM SNMP Traps..............................................................................................................................................90

Displaying Ethernet CFM Statistics...................................................................................................................................91

6 802.1X........................................................................................................................... 93

The 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

5

Conguring an Authentication-Fail VLAN................................................................................................................. 104

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)........................................................................................................................................ 112

CAM Usage............................................................................................................................................................... 112

Implementing ACLs on Dell Networking OS............................................................................................................... 113

IP Fragment Handling...................................................................................................................................................... 114

IP Fragments ACL Examples......................................................................................................................................114

Layer 4 ACL Rules Examples......................................................................................................................................115

Congure a Standard IP ACL........................................................................................................................................... 116

Conguring a Standard IP ACL Filter..........................................................................................................................117

Congure an Extended IP ACL........................................................................................................................................ 118

Conguring Filters with a Sequence Number.............................................................................................................118

Conguring Filters Without a Sequence Number.......................................................................................................119

Congure Layer 2 and Layer 3 ACLs...............................................................................................................................120

Assign an IP ACL to an Interface.....................................................................................................................................120

Applying an IP ACL.......................................................................................................................................................... 121

Counting ACL Hits.....................................................................................................................................................121

Congure Ingress ACLs................................................................................................................................................... 121

Congure Egress ACLs................................................................................................................................................... 122

Applying Egress Layer 3 ACLs (Control-Plane)..........................................................................................................123

IP Prex Lists.................................................................................................................................................................. 124

Implementation Information.......................................................................................................................................124

Conguration Task List for Prex Lists...................................................................................................................... 124

ACL Resequencing..........................................................................................................................................................128

Resequencing an ACL or Prex List.......................................................................................................................... 128

Route Maps.................................................................................................................................................................... 129

Implementation Information...................................................................................................................................... 130

Important Points to Remember.......................................................................................................................................130

Conguration Task List for Route Maps.................................................................................................................... 130

Conguring Match Routes........................................................................................................................................ 132

Conguring Set Conditions....................................................................................................................................... 134

Congure a Route Map for Route Redistribution...................................................................................................... 135

Congure a Route Map for Route Tagging................................................................................................................135

Continue Clause........................................................................................................................................................135

Logging of ACL Processes.............................................................................................................................................. 136

Guidelines for Conguring ACL Logging.................................................................................................................... 137

6

Conguring ACL Logging.......................................................................................................................................... 137

Flow-Based Monitoring Support for ACLs.......................................................................................................................138

Behavior of Flow-Based Monitoring..........................................................................................................................138

Enabling Flow-Based Monitoring...............................................................................................................................139

9 Bidirectional Forwarding Detection (BFD).................................................................... 141

How BFD Works.............................................................................................................................................................. 141

BFD Packet Format.................................................................................................................................................. 142

BFD Sessions............................................................................................................................................................143

BFD Three-Way Handshake...................................................................................................................................... 144

Session State Changes............................................................................................................................................. 146

Important Points to Remember.......................................................................................................................................146

Congure BFD................................................................................................................................................................ 146

Congure BFD for Physical Ports..............................................................................................................................147

Congure BFD for Static Routes.............................................................................................................................. 150

Congure BFD for OSPF........................................................................................................................................... 151

Congure BFD for OSPFv3.......................................................................................................................................153

Congure BFD for IS-IS............................................................................................................................................ 155

Congure BFD for BGP.............................................................................................................................................157

Congure BFD for VRRP.......................................................................................................................................... 163

Conguring Protocol Liveness.................................................................................................................................. 166

Troubleshooting BFD.................................................................................................................................................166

10 Border Gateway Protocol IPv4 (BGPv4).................................................................... 168

Autonomous Systems (AS).............................................................................................................................................168

Sessions and Peers......................................................................................................................................................... 170

Establish a Session....................................................................................................................................................170

Route Reectors..............................................................................................................................................................171

BGP Attributes................................................................................................................................................................172

Best Path Selection Criteria...................................................................................................................................... 172

Weight.......................................................................................................................................................................174

Local Preference....................................................................................................................................................... 174

Multi-Exit Discriminators (MEDs)..............................................................................................................................175

Origin........................................................................................................................................................................ 176

AS Path.....................................................................................................................................................................176

Next Hop...................................................................................................................................................................177

Multiprotocol BGP...........................................................................................................................................................177

Implement BGP with Dell Networking OS....................................................................................................................... 178

Additional Path (Add-Path) Support..........................................................................................................................178

Advertise IGP Cost as MED for Redistributed Routes...............................................................................................178

Ignore Router-ID for Some Best-Path Calculations................................................................................................... 179

Four-Byte AS Numbers.............................................................................................................................................179

AS4 Number Representation.....................................................................................................................................179

AS Number Migration................................................................................................................................................ 181

BGP4 Management Information Base (MIB).............................................................................................................182

Important Points to Remember.................................................................................................................................182

7

Conguration Information............................................................................................................................................... 183

BGP Conguration..........................................................................................................................................................183

Enabling BGP............................................................................................................................................................184

Conguring AS4 Number Representations................................................................................................................187

Conguring Peer Groups...........................................................................................................................................189

Conguring BGP Fast Fall-Over................................................................................................................................ 191

Conguring Passive Peering......................................................................................................................................193

Maintaining Existing AS Numbers During an AS Migration........................................................................................ 193

Allowing an AS Number to Appear in its Own AS Path..............................................................................................194

Enabling Graceful Restart......................................................................................................................................... 195

Enabling Neighbor Graceful Restart..........................................................................................................................196

Filtering on an AS-Path Attribute..............................................................................................................................196

Regular Expressions as Filters...................................................................................................................................198

Redistributing Routes............................................................................................................................................... 199

Enabling Additional Paths.........................................................................................................................................200

Conguring IP Community Lists...............................................................................................................................200

Conguring an IP Extended Community List.............................................................................................................201

Filtering Routes with Community Lists..................................................................................................................... 202

Manipulating the COMMUNITY Attribute................................................................................................................ 202

Changing MED Attributes........................................................................................................................................ 204

Changing the LOCAL_PREFERENCE Attribute....................................................................................................... 204

Changing the NEXT_HOP Attribute.........................................................................................................................205

Changing the WEIGHT Attribute..............................................................................................................................205

Enabling Multipath................................................................................................................................................... 206

Filtering BGP Routes................................................................................................................................................206

Filtering BGP Routes Using Route Maps.................................................................................................................. 207

Filtering BGP Routes Using AS-PATH Information................................................................................................... 208

Conguring BGP Route Reectors...........................................................................................................................208

Aggregating Routes................................................................................................................................................. 209

Conguring BGP Confederations............................................................................................................................. 209

Enabling Route Flap Dampening................................................................................................................................210

Changing BGP Timers...............................................................................................................................................212

Enabling BGP Neighbor Soft-Reconguration...........................................................................................................213

Route Map Continue.................................................................................................................................................214

Enabling MBGP Congurations.......................................................................................................................................214

BGP Regular Expression Optimization............................................................................................................................ 215

Debugging BGP.............................................................................................................................................................. 215

Storing Last and Bad PDUs.......................................................................................................................................216

Capturing PDUs........................................................................................................................................................ 217

PDU Counters...........................................................................................................................................................218

Sample Congurations....................................................................................................................................................218

11 Content Addressable Memory (CAM).........................................................................225

CAM Allocation.............................................................................................................................................................. 225

Test CAM Usage............................................................................................................................................................ 227

View CAM Proles..........................................................................................................................................................227

8

View CAM-ACL Settings................................................................................................................................................228

View CAM Usage...........................................................................................................................................................230

CAM Optimization..........................................................................................................................................................230

Troubleshoot CAM Proling............................................................................................................................................230

CAM Prole Mismatches..........................................................................................................................................230

QoS CAM Region Limitation.....................................................................................................................................230

12 Control Plane Policing (CoPP)................................................................................... 232

Congure Control Plane Policing.................................................................................................................................... 233

Conguring CoPP for Protocols............................................................................................................................... 234

Conguring CoPP for CPU Queues..........................................................................................................................235

CoPP for OSPFv3 Packets...................................................................................................................................... 236

Conguring CoPP for OSPFv3.................................................................................................................................239

Show Commands.....................................................................................................................................................240

13 Data Center Bridging (DCB)...................................................................................... 242

Ethernet Enhancements in Data Center Bridging........................................................................................................... 242

Priority-Based Flow Control..................................................................................................................................... 243

Enhanced Transmission Selection.............................................................................................................................244

Data Center Bridging Exchange Protocol (DCBx).................................................................................................... 245

Data Center Bridging in a Trac Flow...................................................................................................................... 245

Enabling Data Center Bridging........................................................................................................................................245

DCB Maps and its Attributes....................................................................................................................................246

Data Center Bridging: Default Conguration...................................................................................................................247

Conguring Priority-Based Flow Control........................................................................................................................ 247

Conguring Lossless Queues....................................................................................................................................248

Conguring PFC in a DCB Map......................................................................................................................................249

PFC Conguration Notes......................................................................................................................................... 249

PFC Prerequisites and Restrictions.......................................................................................................................... 250

Applying a DCB Map on a Port.......................................................................................................................................250

Conguring PFC without a DCB Map............................................................................................................................. 251

Conguring Lossless QueuesExample:...................................................................................................................... 251

Priority-Based Flow Control Using Dynamic Buer Method...........................................................................................253

Pause and Resume of Trac....................................................................................................................................253

Buer Sizes for Lossless or PFC Packets.................................................................................................................253

Behavior of Tagged Packets...........................................................................................................................................254

Conguration Example for DSCP and PFC Priorities......................................................................................................254

Using PFC to Manage Converged Ethernet Trac........................................................................................................ 255

Congure Enhanced Transmission Selection.................................................................................................................. 255

ETS Prerequisites and Restrictions.......................................................................................................................... 255

Creating an ETS Priority Group................................................................................................................................ 255

ETS Operation with DCBx........................................................................................................................................256

Conguring Bandwidth Allocation for DCBx CIN...................................................................................................... 257

Conguring ETS in a DCB Map................................................................................................................................ 258

Hierarchical Scheduling in ETS Output Policies.............................................................................................................. 259

Using ETS to Manage Converged Ethernet Trac.........................................................................................................259

9

Applying DCB Policies in a Switch Stack........................................................................................................................ 260

Congure a DCBx Operation..........................................................................................................................................260

DCBx Operation.......................................................................................................................................................260

DCBx Port Roles...................................................................................................................................................... 260

DCB Conguration Exchange...................................................................................................................................262

Conguration Source Election..................................................................................................................................262

Propagation of DCB Information.............................................................................................................................. 263

Auto-Detection and Manual Conguration of the DCBx Version.............................................................................. 263

DCBx Example......................................................................................................................................................... 263

DCBx Prerequisites and Restrictions........................................................................................................................ 264

Conguring DCBx.................................................................................................................................................... 264

Verifying the DCB Conguration.................................................................................................................................... 268

Sample DCB Conguration............................................................................................................................................. 277

PFC and ETS Conguration Command Examples.....................................................................................................279

QoS dot1p Trac Classication and Queue Assignment.................................................................................................279

Conguring the Dynamic Buer Method........................................................................................................................280

14 Dynamic Host Conguration Protocol (DHCP).......................................................... 282

DHCP Packet Format and Options.................................................................................................................................282

Assign an IP Address using DHCP.................................................................................................................................. 284

Implementation Information............................................................................................................................................284

Congure the System to be a DHCP Server.................................................................................................................. 285

Conguring the Server for Automatic Address Allocation.........................................................................................285

Specifying a Default Gateway...................................................................................................................................287

Congure a Method of Hostname Resolution...........................................................................................................287

Using DNS for Address Resolution........................................................................................................................... 287

Using NetBIOS WINS for Address Resolution...........................................................................................................287

Creating Manual Binding Entries...............................................................................................................................287

Debugging the DHCP Server................................................................................................................................... 288

Using DHCP Clear Commands................................................................................................................................. 288

Congure the System to be a Relay Agent.....................................................................................................................288

Congure the System to be a DHCP Client....................................................................................................................290

DHCP Client Operation with Other Features............................................................................................................290

DHCP Client on a Management Interface................................................................................................................. 291

Congure the System for User Port Stacking (Option 230)............................................................................................291

Congure Secure DHCP.................................................................................................................................................292

Option 82.................................................................................................................................................................292

DHCP Snooping....................................................................................................................................................... 292

Drop DHCP Packets on Snooped VLANs Only.........................................................................................................295

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................................................................................................................................. 302

Creating an ECMP Group Bundle............................................................................................................................. 303

Modifying the ECMP Group Threshold.................................................................................................................... 303

16 FCoE Transit..............................................................................................................305

Fibre Channel over Ethernet.......................................................................................................................................... 305

Ensure Robustness in a Converged Ethernet Network.................................................................................................. 305

FIP Snooping on Ethernet Bridges................................................................................................................................. 306

FIP Snooping in a Switch Stack......................................................................................................................................308

Using FIP Snooping........................................................................................................................................................308

FIP Snooping Prerequisites...................................................................................................................................... 308

Important Points to Remember................................................................................................................................309

Enabling the FCoE Transit Feature...........................................................................................................................309

Enable FIP Snooping on VLANs................................................................................................................................ 310

Congure the FC-MAP Value................................................................................................................................... 310

Congure a Port for a Bridge-to-Bridge Link.............................................................................................................310

Congure a Port for a Bridge-to-FCF Link................................................................................................................ 310

Impact on Other Software Features......................................................................................................................... 310

FIP Snooping Restrictions..........................................................................................................................................311

Conguring FIP Snooping.......................................................................................................................................... 311

Displaying FIP Snooping Information............................................................................................................................... 312

FCoE Transit Conguration Example............................................................................................................................... 317

17 FIPS Cryptography..................................................................................................... 319

Conguration Tasks.........................................................................................................................................................319

Preparing the System..................................................................................................................................................... 319

Enabling FIPS Mode........................................................................................................................................................319

Generating Host-Keys....................................................................................................................................................320

Monitoring FIPS Mode Status........................................................................................................................................320

Disabling FIPS Mode....................................................................................................................................................... 321

18 Force10 Resilient Ring Protocol (FRRP).....................................................................322

Protocol Overview..........................................................................................................................................................322

Ring Status.............................................................................................................................................................. 322

Multiple FRRP Rings................................................................................................................................................ 323

Important FRRP Points............................................................................................................................................ 323

Important FRRP Concepts....................................................................................................................................... 324

Implementing FRRP....................................................................................................................................................... 325

11

FRRP Conguration....................................................................................................................................................... 325

Creating the FRRP Group........................................................................................................................................ 325

Conguring the Control VLAN................................................................................................................................. 326

Conguring and Adding the Member VLANs............................................................................................................327

Setting the FRRP Timers......................................................................................................................................... 328

Clearing the FRRP Counters.................................................................................................................................... 328

Viewing the FRRP Conguration..............................................................................................................................328

Viewing the FRRP Information................................................................................................................................. 328

Troubleshooting FRRP....................................................................................................................................................329

Conguration Checks...............................................................................................................................................329

Sample Conguration and Topology............................................................................................................................... 329

19 GARP VLAN Registration Protocol (GVRP)................................................................ 331

Important Points to Remember.......................................................................................................................................331

Congure GVRP............................................................................................................................................................. 331

Related Conguration Tasks..................................................................................................................................... 332

Enabling GVRP Globally..................................................................................................................................................332

Enabling GVRP on a Layer 2 Interface............................................................................................................................333

Congure GVRP Registration.........................................................................................................................................333

Congure a GARP Timer................................................................................................................................................ 334

RPM Redundancy.......................................................................................................................................................... 334

20 High Availability (HA)................................................................................................ 335

Component Redundancy................................................................................................................................................335

RPM Redundancy....................................................................................................................................................335

Automatic and Manual Stack Unit Failover............................................................................................................... 337

Support for RPM Redundancy by Dell Networking OS Version................................................................................ 337

Synchronization between Management and Standby Units..................................................................................... 338

Conguring RPM Redundancy................................................................................................................................. 338

Online Insertion and Removal......................................................................................................................................... 339

RPM Online Insertion and Removal.......................................................................................................................... 339

Linecard Online Insertion and Removal.....................................................................................................................340

Hitless Behavior.............................................................................................................................................................. 341

Graceful Restart............................................................................................................................................................. 341

Software Resiliency........................................................................................................................................................342

Software Component Health Monitoring..................................................................................................................342

System Health Monitoring........................................................................................................................................342

Failure and Event Logging........................................................................................................................................ 342

Hot-Lock Behavior......................................................................................................................................................... 343

Process Restartability.....................................................................................................................................................343

Enabling Process Restartability................................................................................................................................ 343

21 Internet Group Management Protocol (IGMP)...........................................................345

IGMP Implementation Information..................................................................................................................................345

IGMP Protocol Overview............................................................................................................................................... 345

IGMP Version 2........................................................................................................................................................345

12

IGMP Version 3........................................................................................................................................................ 346

Congure IGMP............................................................................................................................................................. 349

Related Conguration Tasks..................................................................................................................................... 349

Viewing IGMP Enabled Interfaces.................................................................................................................................. 350

Selecting an IGMP Version.............................................................................................................................................350

Viewing IGMP Groups....................................................................................................................................................350

Adjusting Timers............................................................................................................................................................. 351

Adjusting Query and Response Timers......................................................................................................................351

Enabling IGMP Immediate-Leave................................................................................................................................... 352

IGMP Snooping..............................................................................................................................................................352

IGMP Snooping Implementation Information............................................................................................................352

Conguring IGMP Snooping.....................................................................................................................................352

Removing a Group-Port Association........................................................................................................................ 353

Disabling Multicast Flooding.....................................................................................................................................353

Specifying a Port as Connected to a Multicast Router.............................................................................................353

Conguring the Switch as Querier........................................................................................................................... 354

Fast Convergence after MSTP Topology Changes.........................................................................................................354

Egress Interface Selection (EIS) for HTTP and IGMP Applications................................................................................ 354

Protocol Separation................................................................................................................................................. 355

Enabling and Disabling Management Egress Interface Selection.............................................................................. 356

Handling of Management Route Conguration.........................................................................................................357

Handling of Switch-Initiated Trac...........................................................................................................................357

Handling of Switch-Destined Trac.........................................................................................................................358

Handling of Transit Trac (Trac Separation)......................................................................................................... 358

Mapping of Management Applications and Trac Type........................................................................................... 359

Behavior of Various Applications for Switch-Initiated Trac ....................................................................................360

Behavior of Various Applications for Switch-Destined Trac .................................................................................. 360

Interworking of EIS With Various Applications...........................................................................................................361

Designating a Multicast Router Interface....................................................................................................................... 362

22 Interfaces..................................................................................................................363

Basic Interface Conguration.........................................................................................................................................363

Advanced Interface Conguration..................................................................................................................................363

Interface Types...............................................................................................................................................................363

View Basic Interface Information....................................................................................................................................364

Enabling a Physical Interface..........................................................................................................................................365

Physical Interfaces......................................................................................................................................................... 366

Conguration Task List for Physical Interfaces......................................................................................................... 366

Overview of Layer Modes........................................................................................................................................ 366

Conguring Layer 2 (Data Link) Mode......................................................................................................................367

Conguring Layer 2 (Interface) Mode...................................................................................................................... 367

Conguring Layer 3 (Network) Mode.......................................................................................................................367

Conguring Layer 3 (Interface) Mode...................................................................................................................... 368

Egress Interface Selection (EIS).....................................................................................................................................369

Important Points to Remember................................................................................................................................369

Conguring EIS........................................................................................................................................................ 369

13

Management Interfaces................................................................................................................................................. 369

Conguring Management Interfaces........................................................................................................................369

Conguring Management Interfaces on the S-Series................................................................................................371

VLAN Interfaces.............................................................................................................................................................372

Loopback Interfaces....................................................................................................................................................... 372

Null Interfaces................................................................................................................................................................ 373

Port Channel Interfaces..................................................................................................................................................373

Port Channel Denition and Standards..................................................................................................................... 373

Port Channel Benets.............................................................................................................................................. 373

Port Channel Implementation................................................................................................................................... 373

10/100/1000 Mbps Interfaces in Port Channels........................................................................................................374

Conguration Tasks for Port Channel Interfaces.......................................................................................................374

Creating a Port Channel........................................................................................................................................... 375

Adding a Physical Interface to a Port Channel..........................................................................................................375

Reassigning an Interface to a New Port Channel...................................................................................................... 377

Conguring the Minimum Oper Up Links in a Port Channel...................................................................................... 377

.................................................................................................................................................................................378

Assigning an IP Address to a Port Channel............................................................................................................... 378

Deleting or Disabling a Port Channel.........................................................................................................................379

Load Balancing Through Port Channels....................................................................................................................379

Load-Balancing Method........................................................................................................................................... 379

Changing the Hash Algorithm.................................................................................................................................. 380

Bulk Conguration...........................................................................................................................................................381

Interface Range........................................................................................................................................................ 381

Bulk Conguration Examples.....................................................................................................................................381

Dening Interface Range Macros................................................................................................................................... 382

Dene the Interface Range...................................................................................................................................... 383

Choosing an Interface-Range Macro........................................................................................................................383

Monitoring and Maintaining Interfaces........................................................................................................................... 383

Maintenance Using TDR...........................................................................................................................................384

Splitting QSFP Ports to SFP+ Ports...............................................................................................................................385

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port......................................................................................... 385

Important Points to Remember................................................................................................................................386

Example Scenarios...................................................................................................................................................386

Link Dampening............................................................................................................................................................. 390

Important Points to Remember................................................................................................................................390

Enabling Link Dampening......................................................................................................................................... 390

Link Bundle Monitoring................................................................................................................................................... 391

Using Ethernet Pause Frames for Flow Control..............................................................................................................392

Enabling Pause Frames............................................................................................................................................ 393

Congure the MTU Size on an Interface........................................................................................................................ 393

Port-Pipes......................................................................................................................................................................394

Auto-Negotiation on Ethernet Interfaces....................................................................................................................... 394

Setting the Speed and Duplex Mode of Ethernet Interfaces.................................................................................... 394

Set Auto-Negotiation Options..................................................................................................................................396

14

View Advanced Interface Information............................................................................................................................ 396

Conguring the Interface Sampling Size...................................................................................................................397

Dynamic Counters..........................................................................................................................................................398

Clearing Interface Counters..................................................................................................................................... 399

Enhanced Validation of Interface Ranges.......................................................................................................................399

Compressing Conguration Files....................................................................................................................................399

23 Internet Protocol Security (IPSec)............................................................................ 403

Conguring IPSec ......................................................................................................................................................... 403

24 IPv4 Routing............................................................................................................. 405

IP Addresses.................................................................................................................................................................. 405

Implementation Information..................................................................................................................................... 405

Conguration Tasks for IP Addresses............................................................................................................................. 405

Assigning IP Addresses to an Interface...........................................................................................................................406

Conguring Static Routes.............................................................................................................................................. 406

Congure Static Routes for the Management Interface.................................................................................................408

IPv4 Path MTU Discovery Overview..............................................................................................................................409

Using the Congured Source IP Address in ICMP Messages......................................................................................... 409

Conguring the ICMP Source Interface................................................................................................................... 409

Conguring the Duration to Establish a TCP Connection................................................................................................410

Enabling Directed Broadcast........................................................................................................................................... 410

Resolution of Host Names.............................................................................................................................................. 410

Enabling Dynamic Resolution of Host Names.................................................................................................................. 411

Specifying the Local System Domain and a List of Domains............................................................................................ 411

Conguring DNS with Traceroute................................................................................................................................... 412

ARP................................................................................................................................................................................ 412

Conguration Tasks for ARP........................................................................................................................................... 413

Conguring Static ARP Entries....................................................................................................................................... 413

Enabling Proxy ARP........................................................................................................................................................ 413

Clearing ARP Cache........................................................................................................................................................414

ARP Learning via Gratuitous ARP................................................................................................................................... 414

Enabling ARP Learning via Gratuitous ARP..................................................................................................................... 414

ARP Learning via ARP Request.......................................................................................................................................415

Conguring ARP Retries................................................................................................................................................. 415

ICMP.............................................................................................................................................................................. 416

Conguration Tasks for ICMP......................................................................................................................................... 416

Enabling ICMP Unreachable Messages...........................................................................................................................416

UDP Helper.....................................................................................................................................................................417

Congure UDP Helper...............................................................................................................................................417

Important Points to Remember.................................................................................................................................417

Enabling UDP Helper.......................................................................................................................................................417

Conguring a Broadcast Address.................................................................................................................................... 417

Congurations Using UDP Helper................................................................................................................................... 418

UDP Helper with Broadcast-All Addresses......................................................................................................................418

UDP Helper with Subnet Broadcast Addresses...............................................................................................................419

15

UDP Helper with Congured Broadcast Addresses.........................................................................................................419

UDP Helper with No Congured Broadcast Addresses.................................................................................................. 420

Troubleshooting UDP Helper.......................................................................................................................................... 420

25 IPv6 Routing..............................................................................................................421

Protocol Overview.......................................................................................................................................................... 421

Extended Address Space.......................................................................................................................................... 421

Stateless Autoconguration...................................................................................................................................... 421

IPv6 Headers........................................................................................................................................................... 422

IPv6 Header Fields................................................................................................................................................... 422

Extension Header Fields........................................................................................................................................... 424

Addressing............................................................................................................................................................... 425

Implementing IPv6 with Dell Networking OS..................................................................................................................426

ICMPv6..........................................................................................................................................................................427

Path MTU Discovery......................................................................................................................................................428

IPv6 Neighbor Discovery................................................................................................................................................428

IPv6 Neighbor Discovery of MTU Packets............................................................................................................... 429

Conguration Task List for IPv6 RDNSS........................................................................................................................ 429

Conguring the IPv6 Recursive DNS Server............................................................................................................429

Debugging IPv6 RDNSS Information Sent to the Host ............................................................................................430

Displaying IPv6 RDNSS Information......................................................................................................................... 430

Secure Shell (SSH) Over an IPv6 Transport....................................................................................................................431

Conguration Tasks for IPv6........................................................................................................................................... 431

Adjusting Your CAM-Prole.......................................................................................................................................431

Assigning an IPv6 Address to an Interface................................................................................................................432

Assigning a Static IPv6 Route.................................................................................................................................. 433

Conguring Telnet with IPv6.................................................................................................................................... 433

SNMP over IPv6...................................................................................................................................................... 433

Showing IPv6 Information........................................................................................................................................ 434

Showing an IPv6 Interface....................................................................................................................................... 434

Showing IPv6 Routes...............................................................................................................................................435

Showing the Running-Conguration for an Interface............................................................................................... 436

Clearing IPv6 Routes................................................................................................................................................436

Conguring IPv6 RA Guard............................................................................................................................................ 437

Conguring IPv6 RA Guard on an Interface..............................................................................................................438

Monitoring IPv6 RA Guard....................................................................................................................................... 439

26 iSCSI Optimization.................................................................................................... 440

iSCSI Optimization Overview......................................................................................................................................... 440

Monitoring iSCSI Trac Flows.................................................................................................................................. 441

Application of Quality of Service to iSCSI Trac Flows.............................................................................................441

Information Monitored in iSCSI Trac Flows............................................................................................................442

Detection and Auto-Conguration for Dell EqualLogic Arrays...................................................................................442

Conguring Detection and Ports for Dell Compellent Arrays.................................................................................... 443

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer..........................................................................443

Enable and Disable iSCSI Optimization..................................................................................................................... 444

16

Default iSCSI Optimization Values.................................................................................................................................. 444

iSCSI Optimization Prerequisites.................................................................................................................................... 445

Conguring iSCSI Optimization...................................................................................................................................... 445

Displaying iSCSI Optimization Information...................................................................................................................... 447

27 Intermediate System to Intermediate System............................................................ 449

IS-IS Protocol Overview.................................................................................................................................................449

IS-IS Addressing.............................................................................................................................................................449

Multi-Topology IS-IS.......................................................................................................................................................450

Transition Mode....................................................................................................................................................... 450

Interface Support.....................................................................................................................................................450

Adjacencies..............................................................................................................................................................450

Graceful Restart............................................................................................................................................................. 451

Timers.......................................................................................................................................................................451

Implementation Information............................................................................................................................................ 451

Conguration Information...............................................................................................................................................452

Conguration Tasks for IS-IS....................................................................................................................................452

Conguring the Distance of a Route........................................................................................................................ 460

Changing the IS-Type...............................................................................................................................................460

Redistributing IPv4 Routes.......................................................................................................................................463

Redistributing IPv6 Routes.......................................................................................................................................463

Conguring Authentication Passwords.....................................................................................................................464

Setting the Overload Bit.......................................................................................................................................... 465

Debugging IS-IS....................................................................................................................................................... 465

IS-IS Metric Styles......................................................................................................................................................... 466

Congure Metric Values.................................................................................................................................................466

Maximum Values in the Routing Table...................................................................................................................... 467

Change the IS-IS Metric Style in One Level Only......................................................................................................467

Leaks from One Level to Another.............................................................................................................................468

Sample Congurations................................................................................................................................................... 469

28 Link Aggregation Control Protocol (LACP)................................................................ 472

Introduction to Dynamic LAGs and LACP.......................................................................................................................472

Important Points to Remember................................................................................................................................ 472

LACP Modes............................................................................................................................................................473

Conguring LACP Commands..................................................................................................................................473

LACP Conguration Tasks.............................................................................................................................................. 474

Creating a LAG.........................................................................................................................................................474

Conguring the LAG Interfaces as Dynamic............................................................................................................. 474

Setting the LACP Long Timeout.............................................................................................................................. 475

Monitoring and Debugging LACP............................................................................................................................. 475

Shared LAG State Tracking............................................................................................................................................ 476

Conguring Shared LAG State Tracking................................................................................................................... 476

Important Points about Shared LAG State Tracking..................................................................................................477

LACP Basic Conguration Example................................................................................................................................478

Congure a LAG on ALPHA......................................................................................................................................478

17

29 Layer 2...................................................................................................................... 486

Manage the MAC Address Table.................................................................................................................................... 486

Clearing the MAC Address Table.............................................................................................................................. 486

Setting the Aging Time for Dynamic Entries.............................................................................................................486

Conguring a Static MAC Address...........................................................................................................................486

Displaying the MAC Address Table............................................................................................................................487

MAC Learning Limit........................................................................................................................................................487

Setting the MAC Learning Limit............................................................................................................................... 488

mac learning-limit Dynamic...................................................................................................................................... 488

mac learning-limit mac-address-sticky..................................................................................................................... 488

mac learning-limit station-move............................................................................................................................... 488

mac learning-limit no-station-move..........................................................................................................................489

Learning Limit Violation Actions................................................................................................................................489

Setting Station Move Violation Actions.................................................................................................................... 489

Recovering from Learning Limit and Station Move Violations...................................................................................490

NIC Teaming.................................................................................................................................................................. 490

Congure Redundant Pairs............................................................................................................................................. 491

Important Points about Conguring Redundant Pairs...............................................................................................493

Far-End Failure Detection...............................................................................................................................................494

FEFD State Changes................................................................................................................................................495

Conguring FEFD.....................................................................................................................................................495

Enabling FEFD on an Interface.................................................................................................................................496

Debugging FEFD...................................................................................................................................................... 497

30 Link Layer Discovery Protocol (LLDP).......................................................................499

802.1AB (LLDP) Overview............................................................................................................................................. 499

Protocol Data Units..................................................................................................................................................499

Optional TLVs................................................................................................................................................................ 500

Management TLVs...................................................................................................................................................500

TIA-1057 (LLDP-MED) Overview................................................................................................................................... 502

TIA Organizationally Specic TLVs........................................................................................................................... 502

Congure LLDP............................................................................................................................................................. 506

Related Conguration Tasks.....................................................................................................................................506

Important Points to Remember................................................................................................................................506

LLDP Compatibility.................................................................................................................................................. 506

CONFIGURATION versus INTERFACE Congurations...................................................................................................506

Enabling LLDP................................................................................................................................................................507

Disabling and Undoing LLDP.................................................................................................................................... 507

Advertising TLVs............................................................................................................................................................ 507

Viewing the LLDP Conguration.................................................................................................................................... 508

Viewing Information Advertised by Adjacent LLDP Agents............................................................................................ 509

Conguring LLDPDU Intervals........................................................................................................................................ 510

Conguring Transmit and Receive Mode.........................................................................................................................510

Conguring a Time to Live...............................................................................................................................................511

Debugging LLDP.............................................................................................................................................................512

18

Relevant Management Objects.......................................................................................................................................513

31 Microsoft Network Load Balancing.............................................................................518

NLB Unicast Mode Scenario...........................................................................................................................................518

NLB Multicast Mode Scenario........................................................................................................................................ 518

Limitations of the NLB Feature....................................................................................................................................... 519

Microsoft Clustering....................................................................................................................................................... 519

Enable and Disable VLAN Flooding ................................................................................................................................ 519

Conguring a Switch for NLB ....................................................................................................................................... 520

................................................................................................................................................................................ 520

32 Multicast Source Discovery Protocol (MSDP)........................................................... 521

Protocol Overview.......................................................................................................................................................... 521

Anycast RP.................................................................................................................................................................... 522

Implementation Information............................................................................................................................................522

Congure Multicast Source Discovery Protocol............................................................................................................. 522

Related Conguration Tasks..................................................................................................................................... 523

Enable MSDP................................................................................................................................................................. 527

Manage the Source-Active Cache................................................................................................................................. 528

Viewing the Source-Active Cache............................................................................................................................528

Limiting the Source-Active Cache............................................................................................................................528

Clearing the Source-Active Cache........................................................................................................................... 529

Enabling the Rejected Source-Active Cache............................................................................................................529

Accept Source-Active Messages that Fail the RFP Check.............................................................................................529

Specifying Source-Active Messages.............................................................................................................................. 533

Limiting the Source-Active Messages from a Peer.........................................................................................................534

Preventing MSDP from Caching a Local Source............................................................................................................ 534

Preventing MSDP from Caching a Remote Source........................................................................................................ 535

Preventing MSDP from Advertising a Local Source....................................................................................................... 535

Logging Changes in Peership States.............................................................................................................................. 536

Terminating a Peership...................................................................................................................................................536

Clearing Peer Statistics.................................................................................................................................................. 537

Debugging MSDP...........................................................................................................................................................537

MSDP with Anycast RP.................................................................................................................................................538

Conguring Anycast RP.................................................................................................................................................539

Reducing Source-Active Message Flooding............................................................................................................. 540

Specifying the RP Address Used in SA Messages....................................................................................................540

MSDP Sample Congurations........................................................................................................................................543

33 Multiple Spanning Tree Protocol (MSTP)..................................................................546

Protocol Overview......................................................................................................................................................... 546

Spanning Tree Variations................................................................................................................................................ 547

Implementation Information......................................................................................................................................547

Congure Multiple Spanning Tree Protocol.....................................................................................................................547

Related Conguration Tasks..................................................................................................................................... 547

Enable Multiple Spanning Tree Globally.......................................................................................................................... 548

19

Adding and Removing Interfaces....................................................................................................................................548

Creating Multiple Spanning Tree Instances.....................................................................................................................548

Inuencing MSTP Root Selection...................................................................................................................................549

Interoperate with Non-Dell Networking OS Bridges.......................................................................................................550

Changing the Region Name or Revision.........................................................................................................................550

Modifying Global Parameters.......................................................................................................................................... 551

Modifying the Interface Parameters...............................................................................................................................552

Conguring an EdgePort................................................................................................................................................553

Flush MAC Addresses after a Topology Change.............................................................................................................553

MSTP Sample Congurations........................................................................................................................................ 554

Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-CongurationSFTOS

Example Running-Conguration...............................................................................................................................554

Debugging and Verifying MSTP Congurations..............................................................................................................557

34 Multicast Features.................................................................................................... 559

Enabling IP Multicast..................................................................................................................................................... 559

Implementation Information........................................................................................................................................... 559

Multicast Policies...........................................................................................................................................................560

IPv4 Multicast Policies.............................................................................................................................................560

35 Object Tracking......................................................................................................... 567

Object Tracking Overview.............................................................................................................................................. 567

Track Layer 2 Interfaces...........................................................................................................................................568

Track Layer 3 Interfaces...........................................................................................................................................568

Track IPv4 and IPv6 Routes..................................................................................................................................... 568

Set Tracking Delays..................................................................................................................................................569

VRRP Object Tracking..............................................................................................................................................570

Object Tracking Conguration........................................................................................................................................ 570

Tracking a Layer 2 Interface..................................................................................................................................... 570

Tracking a Layer 3 Interface...................................................................................................................................... 571

Track an IPv4/IPv6 Route........................................................................................................................................ 572

Displaying Tracked Objects.............................................................................................................................................575

36 Open Shortest Path First (OSPFv2 and OSPFv3)..................................................... 578

Protocol Overview..........................................................................................................................................................578

Autonomous System (AS) Areas.............................................................................................................................. 578

Area Types................................................................................................................................................................579

Networks and Neighbors......................................................................................................................................... 580

Router Types............................................................................................................................................................580

Designated and Backup Designated Routers............................................................................................................582

Link-State Advertisements (LSAs)........................................................................................................................... 582

Router Priority and Cost.......................................................................................................................................... 583

OSPF with Dell Networking OS......................................................................................................................................584

Graceful Restart...................................................................................................................................................... 585

Fast Convergence (OSPFv2, IPv4 Only)..................................................................................................................586

Multi-Process OSPFv2 with VRF.............................................................................................................................586

20

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