Dell PowerSwitch S4820T Owner's manual

Dell Configuration Guide for the S4820T

System

9.6(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.

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2014 - 09

Rev. A00

Contents

1 About this Guide..................................................................................................35

Audience..............................................................................................................................................35

Conventions........................................................................................................................................ 35

Related Documents.............................................................................................................................35

2 Configuration Fundamentals........................................................................... 36

Accessing the Command Line............................................................................................................36

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

Navigating CLI Modes................................................................................................................... 37

The do Command............................................................................................................................... 41

Undoing Commands...........................................................................................................................41

Obtaining Help.................................................................................................................................... 42

Entering and Editing Commands....................................................................................................... 42

Command History...............................................................................................................................43

Filtering show Command Outputs.....................................................................................................44

Multiple Users in Configuration Mode............................................................................................... 45

3 Getting Started....................................................................................................46

Console Access...................................................................................................................................46

Serial Console................................................................................................................................46

Accessing the CLI Interface and Running Scripts Using SSH............................................................ 47

S4820T ..........................................................................................................................................47

Entering CLI commands Using an SSH Connection................................................................... 48

Executing Local CLI Scripts Using an SSH Connection...............................................................48

Default Configuration......................................................................................................................... 49

Configuring a Host Name...................................................................................................................49

Accessing the System Remotely........................................................................................................ 49

Accessing the System Remotely...................................................................................................49

Configure the Management Port IP Address............................................................................... 49

Configure a Management Route..................................................................................................50

Configuring a Username and Password.......................................................................................50

Configuring the Enable Password......................................................................................................50

Configuration File Management......................................................................................................... 51

Copy Files to and from the System...............................................................................................51

Save the Running-Configuration..................................................................................................52

Configure the Overload Bit for a Startup Scenario...................................................................... 53

Viewing Files.................................................................................................................................. 53

Managing the File System...................................................................................................................54

Enabling Software Features on Devices Using a Command Option................................................ 55

View Command History......................................................................................................................56

Upgrading Dell Networking OS.......................................................................................................... 56

Using HTTP for File Transfers............................................................................................................. 56

Using Hashes to Validate Software Images........................................................................................56

4 Management........................................................................................................59

Configuring Privilege Levels............................................................................................................... 59

Creating a Custom Privilege Level................................................................................................59

Removing a Command from EXEC Mode................................................................................... 59

Moving a Command from EXEC Privilege Mode to EXEC Mode................................................60

Allowing Access to CONFIGURATION Mode Commands..........................................................60

Allowing Access to the Following Modes.................................................................................... 60

Applying a Privilege Level to a Username.................................................................................... 62

Applying a Privilege Level to a Terminal Line...............................................................................62

Configuring Logging...........................................................................................................................62

Audit and Security Logs.................................................................................................................63

Configuring Logging Format ...................................................................................................... 65

Display the Logging Buffer and the Logging Configuration........................................................65

Setting Up a Secure Connection to a Syslog Server....................................................................66

Log Messages in the Internal Buffer................................................................................................... 67

Configuration Task List for System Log Management.................................................................67

Disabling System Logging...................................................................................................................67

Sending System Messages to a Syslog Server................................................................................... 68

Configuring a UNIX System as a Syslog Server............................................................................68

Changing System Logging Settings................................................................................................... 68

Display the Logging Buffer and the Logging Configuration............................................................. 69

Configuring a UNIX Logging Facility Level.........................................................................................70

Synchronizing Log Messages.............................................................................................................. 71

Enabling Timestamp on Syslog Messages.......................................................................................... 71

File Transfer Services...........................................................................................................................72

Configuration Task List for File Transfer Services........................................................................ 72

Enabling the FTP Server.................................................................................................................72

Configuring FTP Server Parameters..............................................................................................73

Configuring FTP Client Parameters.............................................................................................. 73

Terminal Lines..................................................................................................................................... 74

Denying and Permitting Access to a Terminal Line..................................................................... 74

Configuring Login Authentication for Terminal Lines..................................................................75

Setting Time Out of EXEC Privilege Mode......................................................................................... 76

Using Telnet to get to Another Network Device............................................................................... 76

Lock CONFIGURATION Mode............................................................................................................ 77

Viewing the Configuration Lock Status........................................................................................ 77

Recovering from a Forgotten Password on the S4820T System......................................................78

Recovering from a Forgotten Enable Password on the S4820T.................................................79

Recovering from a Failed Start on the S4820T System.....................................................................80

Restoring the Factory Default Settings.............................................................................................. 80

S4820TMXL Switch....................................................................................................................... 80

Important Points to Remember................................................................................................... 80

Restoring Factory Default Environment Variables....................................................................... 81

5 802.1ag................................................................................................................. 83

Ethernet CFM...................................................................................................................................... 83

Maintenance Domains........................................................................................................................84

Maintenance Points............................................................................................................................ 84

Maintenance End Points..................................................................................................................... 85

Implementation Information..............................................................................................................86

Configuring the CFM.......................................................................................................................... 86

Related Configuration Tasks.........................................................................................................86

Enabling Ethernet CFM.......................................................................................................................86

Creating a Maintenance Domain....................................................................................................... 86

Creating a Maintenance Association..................................................................................................87

Create Maintenance Points.................................................................................................................87

Creating a Maintenance End Point...............................................................................................87

Creating a Maintenance Intermediate Point................................................................................88

Displaying the MP Databases........................................................................................................89

Continuity Check Messages............................................................................................................... 90

Enabling CCM................................................................................................................................ 91

Enabling Cross-Checking..............................................................................................................91

Sending Loopback Messages and Responses....................................................................................91

Sending Linktrace Messages and Responses.....................................................................................92

Caching Link Trace........................................................................................................................92

Enabling CFM SNMP Traps................................................................................................................. 93

Displaying Ethernet CFM Statistics..................................................................................................... 95

6 802.1X...................................................................................................................96

The Port-Authentication Process.......................................................................................................97

EAP over RADIUS...........................................................................................................................99

Configuring 802.1X............................................................................................................................. 99

Related Configuration Tasks.........................................................................................................99

Important Points to Remember....................................................................................................... 100

Enabling 802.1X................................................................................................................................ 100

Configuring Request Identity Re-Transmissions............................................................................. 102

Configuring a Quiet Period after a Failed Authentication......................................................... 102

Forcibly Authorizing or Unauthorizing a Port..................................................................................103

Re-Authenticating a Port..................................................................................................................104

Configuring Timeouts.......................................................................................................................105

Configuring Dynamic VLAN Assignment with Port Authentication................................................106

Guest and Authentication-Fail VLANs.............................................................................................. 107

Configuring a Guest VLAN..........................................................................................................108

Configuring an Authentication-Fail VLAN..................................................................................108

7 Access Control List (ACL) VLAN Groups and Content Addressable

Memory (CAM)......................................................................................................110

Optimizing CAM Utilization During the Attachment of ACLs to VLANs..........................................110

Guidelines for Configuring ACL VLAN groups..................................................................................111

Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters.........................112

Configuring ACL VLAN Groups................................................................................................... 112

Configuring FP Blocks for VLAN Parameters..............................................................................113

Viewing CAM Usage.......................................................................................................................... 114

Allocating FP Blocks for VLAN Processes......................................................................................... 115

8 Access Control Lists (ACLs).............................................................................117

IP Access Control Lists (ACLs)...........................................................................................................118

CAM Usage...................................................................................................................................118

Implementing ACLs on Dell Networking OS..............................................................................120

IP Fragment Handling........................................................................................................................121

IP Fragments ACL Examples........................................................................................................121

Layer 4 ACL Rules Examples....................................................................................................... 122

Configure a Standard IP ACL............................................................................................................ 123

Configuring a Standard IP ACL Filter.......................................................................................... 124

Configure an Extended IP ACL......................................................................................................... 125

Configuring Filters with a Sequence Number............................................................................ 125

Configuring Filters Without a Sequence Number......................................................................126

Configure Layer 2 and Layer 3 ACLs.................................................................................................127

Assign an IP ACL to an Interface.......................................................................................................128

Applying an IP ACL............................................................................................................................128

Counting ACL Hits.......................................................................................................................129

Configure Ingress ACLs.....................................................................................................................129

Configure Egress ACLs......................................................................................................................130

Applying Egress Layer 3 ACLs (Control-Plane)...........................................................................131

IP Prefix Lists...................................................................................................................................... 131

Implementation Information.......................................................................................................132

Configuration Task List for Prefix Lists....................................................................................... 132

ACL Resequencing............................................................................................................................ 136

Resequencing an ACL or Prefix List............................................................................................ 137

Route Maps........................................................................................................................................138

Implementation Information...................................................................................................... 138

Important Points to Remember........................................................................................................138

Configuration Task List for Route Maps..................................................................................... 139

Configuring Match Routes.......................................................................................................... 141

Configuring Set Conditions........................................................................................................ 143

Configure a Route Map for Route Redistribution...................................................................... 144

Configure a Route Map for Route Tagging................................................................................144

Continue Clause..........................................................................................................................145

Logging of ACL Processes................................................................................................................ 145

Guidelines for Configuring ACL Logging................................................................................... 146

Configuring ACL Logging............................................................................................................147

Flow-Based Monitoring Support for ACLs....................................................................................... 147

Behavior of Flow-Based Monitoring.......................................................................................... 148

Enabling Flow-Based Monitoring............................................................................................... 149

9 Bidirectional Forwarding Detection (BFD)...................................................151

How BFD Works.................................................................................................................................151

BFD Packet Format......................................................................................................................152

BFD Sessions................................................................................................................................154

BFD Three-Way Handshake........................................................................................................154

Session State Changes................................................................................................................ 155

Important Points to Remember........................................................................................................156

Configure BFD...................................................................................................................................156

Configure BFD for Physical Ports................................................................................................157

Configure BFD for Static Routes................................................................................................ 160

Configure BFD for OSPF............................................................................................................. 162

Configure BFD for OSPFv3..........................................................................................................165

Configure BFD for IS-IS...............................................................................................................166

Configure BFD for BGP...............................................................................................................169

Configure BFD for VRRP..............................................................................................................176

Configuring Protocol Liveness....................................................................................................179

Troubleshooting BFD.................................................................................................................. 179

10 Border Gateway Protocol IPv4 (BGPv4).....................................................181

Autonomous Systems (AS)................................................................................................................ 181

Sessions and Peers............................................................................................................................183

Establish a Session.......................................................................................................................184

Route Reflectors................................................................................................................................184

BGP Attributes................................................................................................................................... 185

Best Path Selection Criteria........................................................................................................ 186

Weight..........................................................................................................................................188

Local Preference......................................................................................................................... 188

Multi-Exit Discriminators (MEDs)................................................................................................189

Origin...........................................................................................................................................190

AS Path......................................................................................................................................... 191

Next Hop...................................................................................................................................... 191

Multiprotocol BGP.............................................................................................................................192

Implement BGP with Dell Networking OS....................................................................................... 192

Additional Path (Add-Path) Support........................................................................................... 192

Advertise IGP Cost as MED for Redistributed Routes................................................................ 192

Ignore Router-ID for Some Best-Path Calculations..................................................................193

Four-Byte AS Numbers............................................................................................................... 193

AS4 Number Representation...................................................................................................... 194

AS Number Migration..................................................................................................................195

BGP4 Management Information Base (MIB)...............................................................................197

Important Points to Remember..................................................................................................197

Configuration Information................................................................................................................198

BGP Configuration............................................................................................................................198

Enabling BGP...............................................................................................................................199

Configuring AS4 Number Representations............................................................................... 203

Configuring Peer Groups............................................................................................................205

Configuring BGP Fast Fall-Over................................................................................................. 207

Configuring Passive Peering.......................................................................................................209

Maintaining Existing AS Numbers During an AS Migration........................................................210

Allowing an AS Number to Appear in its Own AS Path.............................................................. 211

Enabling Graceful Restart............................................................................................................212

Enabling Neighbor Graceful Restart........................................................................................... 213

Filtering on an AS-Path Attribute................................................................................................ 213

Regular Expressions as Filters..................................................................................................... 215

Redistributing Routes.................................................................................................................. 216

Enabling Additional Paths............................................................................................................217

Configuring IP Community Lists.................................................................................................217

Configuring an IP Extended Community List.............................................................................219

Filtering Routes with Community Lists...................................................................................... 220

Manipulating the COMMUNITY Attribute.................................................................................. 220

Changing MED Attributes........................................................................................................... 222

Changing the LOCAL_PREFERENCE Attribute.......................................................................... 222

Changing the NEXT_HOP Attribute........................................................................................... 223

Changing the WEIGHT Attribute................................................................................................ 224

Enabling Multipath...................................................................................................................... 224

Filtering BGP Routes................................................................................................................... 224

Filtering BGP Routes Using Route Maps.................................................................................... 226

Filtering BGP Routes Using AS-PATH Information.................................................................... 227

Configuring BGP Route Reflectors.............................................................................................227

Aggregating Routes.................................................................................................................... 228

Configuring BGP Confederations.............................................................................................. 229

Enabling Route Flap Dampening................................................................................................229

Changing BGP Timers.................................................................................................................232

Enabling BGP Neighbor Soft-Reconfiguration.......................................................................... 232

Route Map Continue...................................................................................................................234

Enabling MBGP Configurations........................................................................................................234

BGP Regular Expression Optimization.............................................................................................235

Debugging BGP.................................................................................................................................235

Storing Last and Bad PDUs......................................................................................................... 236

Capturing PDUs...........................................................................................................................237

PDU Counters............................................................................................................................. 238

Sample Configurations..................................................................................................................... 239

11 Content Addressable Memory (CAM)......................................................... 245

CAM Allocation................................................................................................................................. 245

Test CAM Usage................................................................................................................................247

View CAM Profiles.............................................................................................................................247

View CAM-ACL Settings................................................................................................................... 248

View CAM Usage...............................................................................................................................250

CAM Optimization.............................................................................................................................251

Troubleshoot CAM Profiling............................................................................................................. 251

CAM Profile Mismatches............................................................................................................. 251

QoS CAM Region Limitation....................................................................................................... 251

12 Control Plane Policing (CoPP)..................................................................... 253

Configure Control Plane Policing.................................................................................................... 254

Configuring CoPP for Protocols.................................................................................................255

Configuring CoPP for CPU Queues........................................................................................... 257

CoPP for OSPFv3 Packets...........................................................................................................258

Configuring CoPP for OSPFv3....................................................................................................261

Show Commands....................................................................................................................... 262

13 Data Center Bridging (DCB)......................................................................... 264

Ethernet Enhancements in Data Center Bridging........................................................................... 264

Priority-Based Flow Control.......................................................................................................265

Enhanced Transmission Selection............................................................................................. 266

Data Center Bridging Exchange Protocol (DCBx)..................................................................... 268

Data Center Bridging in a Traffic Flow.......................................................................................269

Enabling Data Center Bridging.........................................................................................................269

QoS dot1p Traffic Classification and Queue Assignment............................................................... 270

DCB Maps and its Attributes..............................................................................................................271

DCB Map: Configuration Procedure...........................................................................................271

Important Points to Remember.................................................................................................. 271

Applying a DCB Map on a Port................................................................................................... 272

Configuring PFC without a DCB Map.........................................................................................272

Configuring Lossless Queues..................................................................................................... 273

Data Center Bridging: Default Configuration.................................................................................. 274

Configuring PFC and ETS in a DCB Map..........................................................................................274

PFC Configuration Notes............................................................................................................274

PFC Prerequisites and Restrictions.............................................................................................276

ETS Configuration Notes............................................................................................................ 276

ETS Prerequisites and Restrictions..............................................................................................277

Configuring Priority-Based Flow Control.........................................................................................277

Configuring Lossless Queues..................................................................................................... 279

Configure Enhanced Transmission Selection..................................................................................279

ETS Prerequisites and Restrictions.............................................................................................280

Creating an ETS Priority Group.................................................................................................. 280

ETS Operation with DCBx.......................................................................................................... 280

Configuring Bandwidth Allocation for DCBx CIN......................................................................281

Applying DCB Policies in a Switch Stack......................................................................................... 282

Configure a DCBx Operation........................................................................................................... 282

DCBx Operation..........................................................................................................................283

DCBx Port Roles..........................................................................................................................283

DCB Configuration Exchange.................................................................................................... 285

Configuration Source Election...................................................................................................285

Propagation of DCB Information............................................................................................... 286

Auto-Detection and Manual Configuration of the DCBx Version............................................286

Behavior of Tagged Packets....................................................................................................... 287

Configuration Example for DSCP and PFC Priorities.................................................................287

DCBx Example............................................................................................................................ 288

DCBx Prerequisites and Restrictions..........................................................................................289

Configuring DCBx.......................................................................................................................289

Verifying the DCB Configuration..................................................................................................... 293

Using PFC and ETS to Manage Data Center Traffic........................................................................ 305

PFC and ETS Configuration Command Examples.................................................................... 306

Using PFC and ETS to Manage Converged Ethernet Traffic..................................................... 307

Hierarchical Scheduling in ETS Output Policies........................................................................ 307

Priority-Based Flow Control Using Dynamic Buffer Method..........................................................307

Pause and Resume of Traffic......................................................................................................308

Buffer Sizes for Lossless or PFC Packets................................................................................... 308

Configuring the Dynamic Buffer Method........................................................................................309

14 Dynamic Host Configuration Protocol (DHCP)........................................ 311

DHCP Packet Format and Options................................................................................................... 311

Assign an IP Address using DHCP.....................................................................................................313

Implementation Information............................................................................................................ 314

Configure the System to be a DHCP Server.................................................................................... 315

Configuring the Server for Automatic Address Allocation.........................................................315

Specifying a Default Gateway..................................................................................................... 317

Configure a Method of Hostname Resolution........................................................................... 317

Using DNS for Address Resolution..............................................................................................317

Using NetBIOS WINS for Address Resolution.............................................................................317

Creating Manual Binding Entries................................................................................................ 318

Debugging the DHCP Server...................................................................................................... 318

Using DHCP Clear Commands...................................................................................................318

Configure the System to be a Relay Agent...................................................................................... 319

Configure the System to be a DHCP Client.....................................................................................321

DHCP Client Operation with Other Features.............................................................................321

DHCP Client on a Management Interface................................................................................. 322

Configure the System for User Port Stacking (Option 230)............................................................323

Configure Secure DHCP...................................................................................................................323

Option 82.................................................................................................................................... 323

DHCP Snooping..........................................................................................................................324

Drop DHCP Packets on Snooped VLANs Only..........................................................................326

Dynamic ARP Inspection............................................................................................................ 326

Configuring Dynamic ARP Inspection........................................................................................328

Source Address Validation................................................................................................................329

Enabling IP Source Address Validation.......................................................................................329

DHCP MAC Source Address Validation......................................................................................330

Enabling IP+MAC Source Address Validation............................................................................330

Viewing the Number of SAV Dropped Packets.......................................................................... 331

Clearing the Number of SAV Dropped Packets......................................................................... 331

15 Equal Cost Multi-Path (ECMP)..................................................................... 332

ECMP for Flow-Based Affinity.......................................................................................................... 332

Configuring the Hash Algorithm................................................................................................ 332

Enabling Deterministic ECMP Next Hop....................................................................................332

Configuring the Hash Algorithm Seed....................................................................................... 333

Link Bundle Monitoring.....................................................................................................................333

Managing ECMP Group Paths.................................................................................................... 334

Creating an ECMP Group Bundle...............................................................................................335

Modifying the ECMP Group Threshold...................................................................................... 335

16 FCoE Transit.....................................................................................................337

Fibre Channel over Ethernet.............................................................................................................337

Ensure Robustness in a Converged Ethernet Network................................................................... 337

FIP Snooping on Ethernet Bridges................................................................................................... 339

FIP Snooping in a Switch Stack.........................................................................................................341

Using FIP Snooping........................................................................................................................... 341

FIP Snooping Prerequisites......................................................................................................... 341

Important Points to Remember................................................................................................. 342

Enabling the FCoE Transit Feature.............................................................................................342

Enable FIP Snooping on VLANs..................................................................................................343

Configure the FC-MAP Value..................................................................................................... 343

Configure a Port for a Bridge-to-Bridge Link............................................................................343

Configure a Port for a Bridge-to-FCF Link................................................................................ 343

Impact on Other Software Features...........................................................................................343

FIP Snooping Restrictions...........................................................................................................344

Configuring FIP Snooping.......................................................................................................... 344

Displaying FIP Snooping Information.............................................................................................. 345

FCoE Transit Configuration Example............................................................................................... 351

17 Enabling FIPS Cryptography.........................................................................353

Configuration Tasks..........................................................................................................................353

Preparing the System........................................................................................................................353

Enabling FIPS Mode.......................................................................................................................... 354

Generating Host-Keys...................................................................................................................... 354

Monitoring FIPS Mode Status........................................................................................................... 355

Disabling FIPS Mode......................................................................................................................... 355

18 Force10 Resilient Ring Protocol (FRRP)..................................................... 357

Protocol Overview............................................................................................................................ 357

Ring Status...................................................................................................................................358

Multiple FRRP Rings.................................................................................................................... 359

Important FRRP Points................................................................................................................359

Important FRRP Concepts..........................................................................................................359

Implementing FRRP...........................................................................................................................361

FRRP Configuration...........................................................................................................................361

Creating the FRRP Group............................................................................................................361

Configuring the Control VLAN................................................................................................... 362

Configuring and Adding the Member VLANs.............................................................................363

Setting the FRRP Timers............................................................................................................. 364

Clearing the FRRP Counters.......................................................................................................365

Viewing the FRRP Configuration................................................................................................365

Viewing the FRRP Information................................................................................................... 365

Troubleshooting FRRP......................................................................................................................366

Configuration Checks.................................................................................................................366

Sample Configuration and Topology...............................................................................................366

19 GARP VLAN Registration Protocol (GVRP)................................................368

Important Points to Remember....................................................................................................... 368

Configure GVRP................................................................................................................................369

Related Configuration Tasks...................................................................................................... 369

Enabling GVRP Globally....................................................................................................................370

Enabling GVRP on a Layer 2 Interface............................................................................................. 370

Configure GVRP Registration........................................................................................................... 370

Configure a GARP Timer................................................................................................................... 371

RPM Redundancy..............................................................................................................................372

20 High Availability (HA).....................................................................................373

Component Redundancy................................................................................................................. 373

RPM Redundancy........................................................................................................................ 373

Automatic and Manual Stack Unit Failover................................................................................ 375

Support for RPM Redundancy by Dell Networking OS Version................................................376

Synchronization between Management and Standby Units..................................................... 376

Configuring RPM Redundancy................................................................................................... 376

Online Insertion and Removal..........................................................................................................378

RPM Online Insertion and Removal........................................................................................... 378

Linecard Online Insertion and Removal.....................................................................................378

Hitless Behavior.................................................................................................................................379

Graceful Restart................................................................................................................................380

Software Resiliency.......................................................................................................................... 380

Software Component Health Monitoring..................................................................................380

System Health Monitoring.......................................................................................................... 381

Failure and Event Logging...........................................................................................................381

Hot-Lock Behavior........................................................................................................................... 382

Process Restartability........................................................................................................................382

Enabling Process Restartability...................................................................................................382

21 Internet Group Management Protocol (IGMP).........................................384

IGMP Implementation Information..................................................................................................384

IGMP Protocol Overview..................................................................................................................384

IGMP Version 2........................................................................................................................... 384

IGMP Version 3............................................................................................................................386

Configure IGMP................................................................................................................................ 389

Related Configuration Tasks...................................................................................................... 389

Viewing IGMP Enabled Interfaces....................................................................................................390

Selecting an IGMP Version...............................................................................................................390

Viewing IGMP Groups.......................................................................................................................391

Adjusting Timers................................................................................................................................391

Adjusting Query and Response Timers...................................................................................... 391

Adjusting the IGMP Querier Timeout Value...............................................................................392

Configuring a Static IGMP Group.....................................................................................................392

Enabling IGMP Immediate-Leave.....................................................................................................393

IGMP Snooping.................................................................................................................................393

IGMP Snooping Implementation Information........................................................................... 393

Configuring IGMP Snooping...................................................................................................... 393

Removing a Group-Port Association.........................................................................................394

Disabling Multicast Flooding...................................................................................................... 394

Specifying a Port as Connected to a Multicast Router..............................................................395

Configuring the Switch as Querier.............................................................................................395

Fast Convergence after MSTP Topology Changes......................................................................... 396

Egress Interface Selection (EIS) for HTTP and IGMP Applications..................................................396

Protocol Separation.................................................................................................................... 397

Enabling and Disabling Management Egress Interface Selection.............................................398

Handling of Management Route Configuration........................................................................399

Handling of Switch-Initiated Traffic...........................................................................................399

Handling of Switch-Destined Traffic......................................................................................... 400

Handling of Transit Traffic (Traffic Separation)..........................................................................401

Mapping of Management Applications and Traffic Type...........................................................401

Behavior of Various Applications for Switch-Initiated Traffic ..................................................402

Behavior of Various Applications for Switch-Destined Traffic .................................................403

Interworking of EIS With Various Applications.......................................................................... 404

Designating a Multicast Router Interface........................................................................................ 405

22 Interfaces.........................................................................................................406

Basic Interface Configuration.......................................................................................................... 406

Advanced Interface Configuration.................................................................................................. 406

Interface Types................................................................................................................................. 407

View Basic Interface Information.....................................................................................................407

Enabling a Physical Interface........................................................................................................... 409

Physical Interfaces............................................................................................................................409

Configuration Task List for Physical Interfaces..........................................................................410

Overview of Layer Modes........................................................................................................... 410

Configuring Layer 2 (Data Link) Mode........................................................................................410

Configuring Layer 2 (Interface) Mode.........................................................................................411

Configuring Layer 3 (Network) Mode......................................................................................... 411

Configuring Layer 3 (Interface) Mode........................................................................................ 412

Egress Interface Selection (EIS)........................................................................................................ 412

Important Points to Remember..................................................................................................413

Configuring EIS............................................................................................................................413

Management Interfaces.................................................................................................................... 413

Configuring Management Interfaces..........................................................................................413

Configuring Management Interfaces on the S-Series............................................................... 414

VLAN Interfaces.................................................................................................................................415

Loopback Interfaces......................................................................................................................... 416

Null Interfaces................................................................................................................................... 416

Port Channel Interfaces....................................................................................................................416

Port Channel Definition and Standards...................................................................................... 417

Port Channel Benefits..................................................................................................................417

Port Channel Implementation.................................................................................................... 417

10/100/1000 Mbps Interfaces in Port Channels........................................................................418

Configuration Tasks for Port Channel Interfaces...................................................................... 418

Creating a Port Channel............................................................................................................. 418

Adding a Physical Interface to a Port Channel...........................................................................419

Reassigning an Interface to a New Port Channel...................................................................... 421

Configuring the Minimum Oper Up Links in a Port Channel....................................................422

..................................................................................................................................................... 422

Assigning an IP Address to a Port Channel................................................................................423

Deleting or Disabling a Port Channel.........................................................................................423

Load Balancing Through Port Channels....................................................................................423

Load-Balancing Method.............................................................................................................423

Changing the Hash Algorithm....................................................................................................424

Bulk Configuration............................................................................................................................425

Interface Range...........................................................................................................................425

Bulk Configuration Examples..................................................................................................... 426

Defining Interface Range Macros.....................................................................................................427

Define the Interface Range.........................................................................................................428

Choosing an Interface-Range Macro........................................................................................ 428

Monitoring and Maintaining Interfaces............................................................................................428

Maintenance Using TDR............................................................................................................. 429

Splitting QSFP Ports to SFP+ Ports.................................................................................................. 430

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................ 431

Important Points to Remember..................................................................................................431

Support for LM4 Optics.............................................................................................................. 432

Example Scenarios......................................................................................................................432

Link Dampening................................................................................................................................436

Important Points to Remember................................................................................................. 436

Enabling Link Dampening...........................................................................................................436

Link Bundle Monitoring.................................................................................................................... 438

Using Ethernet Pause Frames for Flow Control.............................................................................. 438

Enabling Pause Frames...............................................................................................................439

Configure the MTU Size on an Interface.........................................................................................440

Port-Pipes..........................................................................................................................................441

Auto-Negotiation on Ethernet Interfaces........................................................................................ 441

Setting the Speed and Duplex Mode of Ethernet Interfaces.....................................................441

Set Auto-Negotiation Options................................................................................................... 443

View Advanced Interface Information.............................................................................................444

Configuring the Interface Sampling Size...................................................................................444

Dynamic Counters............................................................................................................................446

Clearing Interface Counters.......................................................................................................446

Enhanced Validation of Interface Ranges........................................................................................447

Compressing Configuration Files.....................................................................................................447

23 Internet Protocol Security (IPSec)...............................................................451

Configuring IPSec ............................................................................................................................ 452

24 IPv4 Routing................................................................................................... 453

IP Addresses...................................................................................................................................... 453

Implementation Information...................................................................................................... 453

Configuration Tasks for IP Addresses.............................................................................................. 453

Assigning IP Addresses to an Interface............................................................................................ 454

Configuring Static Routes.................................................................................................................455

Configure Static Routes for the Management Interface.................................................................456

IPv4 Path MTU Discovery Overview.................................................................................................457

Using the Configured Source IP Address in ICMP Messages..........................................................458

Configuring the ICMP Source Interface.....................................................................................458

Configuring the Duration to Establish a TCP Connection..............................................................458

Enabling Directed Broadcast............................................................................................................459

Resolution of Host Names............................................................................................................... 459

Enabling Dynamic Resolution of Host Names................................................................................ 459

Specifying the Local System Domain and a List of Domains......................................................... 460

Configuring DNS with Traceroute...................................................................................................460

ARP.....................................................................................................................................................461

Configuration Tasks for ARP............................................................................................................ 462

Configuring Static ARP Entries.........................................................................................................462

Enabling Proxy ARP...........................................................................................................................463

Clearing ARP Cache..........................................................................................................................463

ARP Learning via Gratuitous ARP..................................................................................................... 463

Enabling ARP Learning via Gratuitous ARP......................................................................................464

ARP Learning via ARP Request.........................................................................................................464

Configuring ARP Retries................................................................................................................... 465

ICMP..................................................................................................................................................466

Configuration Tasks for ICMP..........................................................................................................466

Enabling ICMP Unreachable Messages........................................................................................... 466

UDP Helper....................................................................................................................................... 466

Configure UDP Helper................................................................................................................466

Important Points to Remember................................................................................................. 467

Enabling UDP Helper........................................................................................................................ 467

Configuring a Broadcast Address.....................................................................................................467

Configurations Using UDP Helper................................................................................................... 468

UDP Helper with Broadcast-All Addresses......................................................................................468

UDP Helper with Subnet Broadcast Addresses............................................................................... 469

UDP Helper with Configured Broadcast Addresses........................................................................ 470

UDP Helper with No Configured Broadcast Addresses.................................................................. 470

Troubleshooting UDP Helper...........................................................................................................470

25 IPv6 Routing....................................................................................................472

Protocol Overview............................................................................................................................ 472

Extended Address Space.............................................................................................................472

Stateless Autoconfiguration........................................................................................................472

IPv6 Headers................................................................................................................................473

IPv6 Header Fields.......................................................................................................................474

Extension Header Fields..............................................................................................................475

Addressing...................................................................................................................................476

Implementing IPv6 with Dell Networking OS..................................................................................478

ICMPv6..............................................................................................................................................480

Path MTU Discovery.........................................................................................................................480

IPv6 Neighbor Discovery.................................................................................................................. 481

IPv6 Neighbor Discovery of MTU Packets.................................................................................482

Configuration Task List for IPv6 RDNSS.......................................................................................... 482

Configuring the IPv6 Recursive DNS Server.............................................................................. 482

Debugging IPv6 RDNSS Information Sent to the Host ............................................................ 483

Displaying IPv6 RDNSS Information...........................................................................................484

Secure Shell (SSH) Over an IPv6 Transport......................................................................................485

Configuration Tasks for IPv6............................................................................................................485

Adjusting Your CAM-Profile....................................................................................................... 485

Assigning an IPv6 Address to an Interface.................................................................................486

Assigning a Static IPv6 Route..................................................................................................... 486

Configuring Telnet with IPv6......................................................................................................487

SNMP over IPv6...........................................................................................................................487

Showing IPv6 Information..........................................................................................................488

Showing an IPv6 Interface..........................................................................................................488

Showing IPv6 Routes..................................................................................................................489

Showing the Running-Configuration for an Interface..............................................................490

Clearing IPv6 Routes...................................................................................................................491

26 iSCSI Optimization.........................................................................................492

iSCSI Optimization Overview........................................................................................................... 492

Monitoring iSCSI Traffic Flows................................................................................................... 494

Application of Quality of Service to iSCSI Traffic Flows............................................................494

Information Monitored in iSCSI Traffic Flows............................................................................494

Detection and Auto-Configuration for Dell EqualLogic Arrays................................................ 495

Configuring Detection and Ports for Dell Compellent Arrays..................................................496

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer........................................496

Enable and Disable iSCSI Optimization..................................................................................... 496

Default iSCSI Optimization Values................................................................................................... 497

iSCSI Optimization Prerequisites..................................................................................................... 498

Configuring iSCSI Optimization.......................................................................................................498

Displaying iSCSI Optimization Information.....................................................................................500

27 Intermediate System to Intermediate System.......................................... 502

IS-IS Protocol Overview................................................................................................................... 502

IS-IS Addressing................................................................................................................................502

Multi-Topology IS-IS........................................................................................................................ 503

Transition Mode..........................................................................................................................504

Interface Support........................................................................................................................504

Adjacencies................................................................................................................................. 504

Graceful Restart................................................................................................................................504

Timers..........................................................................................................................................505

Implementation Information............................................................................................................505

Configuration Information............................................................................................................... 506

Configuration Tasks for IS-IS..................................................................................................... 506

Configuring the Distance of a Route..........................................................................................515

Changing the IS-Type................................................................................................................. 515

Redistributing IPv4 Routes..........................................................................................................518

Redistributing IPv6 Routes.......................................................................................................... 519

Configuring Authentication Passwords..................................................................................... 520

Setting the Overload Bit..............................................................................................................520

Debugging IS-IS...........................................................................................................................521

IS-IS Metric Styles............................................................................................................................. 522

Configure Metric Values................................................................................................................... 522

Maximum Values in the Routing Table.......................................................................................523

Change the IS-IS Metric Style in One Level Only...................................................................... 523

Leaks from One Level to Another...............................................................................................525

Sample Configurations..................................................................................................................... 525

28 Link Aggregation Control Protocol (LACP)...............................................528

Introduction to Dynamic LAGs and LACP....................................................................................... 528

Important Points to Remember................................................................................................. 528

LACP Modes................................................................................................................................ 529

Configuring LACP Commands................................................................................................... 529

LACP Configuration Tasks................................................................................................................530

Creating a LAG............................................................................................................................ 530

Configuring the LAG Interfaces as Dynamic.............................................................................. 531

Setting the LACP Long Timeout................................................................................................. 531

Monitoring and Debugging LACP...............................................................................................532

Shared LAG State Tracking............................................................................................................... 532

Configuring Shared LAG State Tracking.....................................................................................533

Important Points about Shared LAG State Tracking..................................................................534

LACP Basic Configuration Example................................................................................................. 535

Configure a LAG on ALPHA........................................................................................................ 535

29 Layer 2..............................................................................................................543

Manage the MAC Address Table...................................................................................................... 543

Clearing the MAC Address Table................................................................................................543

Setting the Aging Time for Dynamic Entries..............................................................................543

Configuring a Static MAC Address............................................................................................. 544

Displaying the MAC Address Table............................................................................................ 544

MAC Learning Limit.......................................................................................................................... 544

Setting the MAC Learning Limit..................................................................................................545

mac learning-limit Dynamic.......................................................................................................545

mac learning-limit mac-address-sticky.....................................................................................546

mac learning-limit station-move............................................................................................... 546

mac learning-limit no-station-move.........................................................................................546

Learning Limit Violation Actions.................................................................................................547

Setting Station Move Violation Actions...................................................................................... 547

Recovering from Learning Limit and Station Move Violations..................................................548

NIC Teaming.....................................................................................................................................548

Configure Redundant Pairs.............................................................................................................. 549

Important Points about Configuring Redundant Pairs...............................................................551

Far-End Failure Detection.................................................................................................................552

FEFD State Changes....................................................................................................................553

Configuring FEFD........................................................................................................................554

Enabling FEFD on an Interface................................................................................................... 555

Debugging FEFD......................................................................................................................... 556

30 Link Layer Discovery Protocol (LLDP)........................................................558

802.1AB (LLDP) Overview.................................................................................................................558

Protocol Data Units.....................................................................................................................558

Optional TLVs....................................................................................................................................559

Management TLVs...................................................................................................................... 559

TIA-1057 (LLDP-MED) Overview...................................................................................................... 561

TIA Organizationally Specific TLVs.............................................................................................562

Configure LLDP.................................................................................................................................566

Related Configuration Tasks...................................................................................................... 566

Important Points to Remember..................................................................................................567

LLDP Compatibility......................................................................................................................567

CONFIGURATION versus INTERFACE Configurations....................................................................567

Enabling LLDP...................................................................................................................................568

Disabling and Undoing LLDP......................................................................................................568

Advertising TLVs................................................................................................................................568

Viewing the LLDP Configuration......................................................................................................569

Viewing Information Advertised by Adjacent LLDP Agents.............................................................570

Configuring LLDPDU Intervals.......................................................................................................... 571

Configuring Transmit and Receive Mode........................................................................................ 572

Configuring a Time to Live............................................................................................................... 573

Debugging LLDP............................................................................................................................... 573

Relevant Management Objects........................................................................................................ 574

31 Microsoft Network Load Balancing............................................................580

NLB Unicast Mode Scenario.............................................................................................................580

NLB Multicast Mode Scenario...........................................................................................................581

Limitations With Enabling NLB on Switches.................................................................................... 581

Benefits and Working of Microsoft Clustering.................................................................................581

Enable and Disable VLAN Flooding .................................................................................................582

Configuring a Switch for NLB ..........................................................................................................582

..................................................................................................................................................... 582

32 Multicast Source Discovery Protocol (MSDP)...........................................583

Protocol Overview............................................................................................................................583

Anycast RP.........................................................................................................................................585

Implementation Information............................................................................................................585

Configure Multicast Source Discovery Protocol............................................................................. 585

Related Configuration Tasks.......................................................................................................585

Enable MSDP.....................................................................................................................................589

Manage the Source-Active Cache...................................................................................................590

Viewing the Source-Active Cache............................................................................................. 590

Limiting the Source-Active Cache..............................................................................................591

Clearing the Source-Active Cache............................................................................................. 591

Enabling the Rejected Source-Active Cache............................................................................. 591

Accept Source-Active Messages that Fail the RFP Check...............................................................591

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Dell PowerSwitch S4820T Owner's manual

Dell PowerSwitch S4820T Owner's manual

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