Dell Networking S6000 Specification

Dell Configuration Guide for the S6000

System

9.5(0.1)

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 - 07

Rev. A00

Contents

1 About this Guide................................................................................................. 32

Audience..............................................................................................................................................32

Conventions........................................................................................................................................ 32

Related Documents............................................................................................................................ 32

2 Configuration Fundamentals........................................................................... 33

Accessing the Command Line............................................................................................................33

CLI Modes............................................................................................................................................33

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

The do Command............................................................................................................................... 37

Undoing Commands...........................................................................................................................38

Obtaining Help.................................................................................................................................... 39

Entering and Editing Commands....................................................................................................... 39

Command History.............................................................................................................................. 40

Filtering show Command Outputs.....................................................................................................40

Multiple Users in Configuration Mode............................................................................................... 42

3 Getting Started....................................................................................................43

Console Access...................................................................................................................................43

Serial Console................................................................................................................................43

Default Configuration......................................................................................................................... 44

Configuring a Host Name...................................................................................................................44

Accessing the System Remotely.........................................................................................................45

Accessing the and S6000Remotely............................................................................................. 45

Configure the Management Port IP Address............................................................................... 45

Configure a Management Route..................................................................................................46

Configuring a Username and Password.......................................................................................46

Configuring the Enable Password......................................................................................................46

Configuration File Management.........................................................................................................47

Copy Files to and from the System.............................................................................................. 47

Save the Running-Configuration..................................................................................................48

Configure the Overload Bit for a Startup Scenario......................................................................49

Viewing Files..................................................................................................................................49

Managing the File System...................................................................................................................50

View Command History...................................................................................................................... 51

Upgrading Dell Networking OS...........................................................................................................51

Using HTTP for File Transfers..............................................................................................................51

Using Hashes to Validate Software Images........................................................................................52

4 Management....................................................................................................... 54

Configuring Privilege Levels............................................................................................................... 54

Creating a Custom Privilege Level................................................................................................54

Removing a Command from EXEC Mode................................................................................... 54

Moving a Command from EXEC Privilege Mode to EXEC Mode................................................ 54

Allowing Access to CONFIGURATION Mode Commands.......................................................... 55

Allowing Access to the Following Modes.....................................................................................55

Applying a Privilege Level to a Username.....................................................................................57

Applying a Privilege Level to a Terminal Line............................................................................... 57

Configuring Logging........................................................................................................................... 57

Audit and Security Logs.................................................................................................................58

Configuring Logging Format ...................................................................................................... 59

Setting Up a Secure Connection to a Syslog Server....................................................................60

Log Messages in the Internal Buffer................................................................................................... 61

Configuration Task List for System Log Management.................................................................61

Disabling System Logging...................................................................................................................61

Sending System Messages to a Syslog Server....................................................................................62

Configuring a UNIX System as a Syslog Server............................................................................62

Changing System Logging Settings....................................................................................................62

Display the Logging Buffer and the Logging Configuration............................................................. 63

Configuring a UNIX Logging Facility Level.........................................................................................64

Synchronizing Log Messages............................................................................................................. 65

Enabling Timestamp on Syslog Messages......................................................................................... 65

File Transfer Services.......................................................................................................................... 66

Configuration Task List for File Transfer Services........................................................................66

Enabling the FTP Server................................................................................................................ 66

Configuring FTP Server Parameters..............................................................................................67

Configuring FTP Client Parameters.............................................................................................. 67

Terminal Lines.....................................................................................................................................68

Denying and Permitting Access to a Terminal Line.....................................................................68

Configuring Login Authentication for Terminal Lines................................................................. 69

Setting Time Out of EXEC Privilege Mode......................................................................................... 70

Using Telnet to get to Another Network Device............................................................................... 70

Lock CONFIGURATION Mode............................................................................................................ 71

Viewing the Configuration Lock Status.........................................................................................71

Restoring the Factory Default Settings...............................................................................................72

S6000MXL Switch..........................................................................................................................72

Important Points to Remember....................................................................................................72

Restoring Factory Default Environment Variables....................................................................... 73

5 802.1X................................................................................................................... 75

The Port-Authentication Process.......................................................................................................76

EAP over RADIUS...........................................................................................................................78

Configuring 802.1X............................................................................................................................. 78

Related Configuration Tasks.........................................................................................................78

Important Points to Remember..........................................................................................................79

Enabling 802.1X...................................................................................................................................79

Configuring Request Identity Re-Transmissions................................................................................81

Configuring a Quiet Period after a Failed Authentication............................................................81

Forcibly Authorizing or Unauthorizing a Port....................................................................................82

Re-Authenticating a Port.................................................................................................................... 83

Configuring Timeouts.........................................................................................................................84

Configuring Dynamic VLAN Assignment with Port Authentication..................................................85

Guest and Authentication-Fail VLANs................................................................................................86

Configuring a Guest VLAN............................................................................................................ 87

Configuring an Authentication-Fail VLAN....................................................................................87

6 Access Control Lists (ACLs).............................................................................. 89

IP Access Control Lists (ACLs)............................................................................................................90

CAM Usage....................................................................................................................................90

Implementing ACLs on Dell Networking OS................................................................................92

Important Points to Remember..........................................................................................................93

Configuration Task List for Route Maps.......................................................................................93

Configuring Match Routes............................................................................................................96

Configuring Set Conditions...........................................................................................................97

Configure a Route Map for Route Redistribution........................................................................98

Configure a Route Map for Route Tagging..................................................................................99

Continue Clause............................................................................................................................99

IP Fragment Handling.......................................................................................................................100

IP Fragments ACL Examples.......................................................................................................100

Layer 4 ACL Rules Examples....................................................................................................... 101

Configure a Standard IP ACL............................................................................................................ 102

Configuring a Standard IP ACL Filter..........................................................................................103

Configure an Extended IP ACL.........................................................................................................104

Configuring Filters with a Sequence Number............................................................................104

Configuring Filters Without a Sequence Number......................................................................105

Configure Layer 2 and Layer 3 ACLs................................................................................................ 106

Assign an IP ACL to an Interface.......................................................................................................107

Applying an IP ACL............................................................................................................................ 107

Counting ACL Hits.......................................................................................................................108

Configure Ingress ACLs.................................................................................................................... 108

Configure Egress ACLs..................................................................................................................... 109

Applying Egress Layer 3 ACLs (Control-Plane)...........................................................................110

IP Prefix Lists......................................................................................................................................110

Implementation Information....................................................................................................... 111

Configuration Task List for Prefix Lists........................................................................................ 111

ACL Resequencing.............................................................................................................................115

Resequencing an ACL or Prefix List............................................................................................ 115

Route Maps........................................................................................................................................ 117

Implementation Information....................................................................................................... 117

Flow-Based Monitoring Support for ACLs........................................................................................117

Behavior of Flow-Based Monitoring...........................................................................................118

Enabling Flow-Based Monitoring................................................................................................119

7 Bidirectional Forwarding Detection (BFD)................................................... 121

How BFD Works.................................................................................................................................121

BFD Packet Format......................................................................................................................122

BFD Sessions................................................................................................................................124

BFD Three-Way Handshake........................................................................................................124

Session State Changes................................................................................................................ 125

Important Points to Remember........................................................................................................126

Configure BFD...................................................................................................................................126

Configure BFD for Physical Ports................................................................................................127

Configure BFD for Static Routes.................................................................................................130

Configure BFD for OSPF............................................................................................................. 132

Configure BFD for OSPFv3..........................................................................................................135

Configure BFD for IS-IS...............................................................................................................136

Configure BFD for BGP............................................................................................................... 139

Configure BFD for VRRP............................................................................................................. 146

Configuring Protocol Liveness................................................................................................... 149

Troubleshooting BFD..................................................................................................................149

8 Border Gateway Protocol IPv4 (BGPv4)....................................................... 151

Autonomous Systems (AS)................................................................................................................ 151

Sessions and Peers............................................................................................................................ 153

Establish a Session.......................................................................................................................154

Route Reflectors................................................................................................................................154

BGP Attributes................................................................................................................................... 155

Best Path Selection Criteria.........................................................................................................156

Weight..........................................................................................................................................158

Local Preference......................................................................................................................... 158

Multi-Exit Discriminators (MEDs)................................................................................................ 159

Origin...........................................................................................................................................160

AS Path......................................................................................................................................... 161

Next Hop...................................................................................................................................... 161

Multiprotocol BGP.............................................................................................................................162

Implement BGP with Dell Networking OS....................................................................................... 162

Additional Path (Add-Path) Support........................................................................................... 162

Advertise IGP Cost as MED for Redistributed Routes................................................................ 162

Ignore Router-ID for Some Best-Path Calculations..................................................................163

Four-Byte AS Numbers............................................................................................................... 163

AS4 Number Representation...................................................................................................... 164

AS Number Migration..................................................................................................................165

BGP4 Management Information Base (MIB)...............................................................................167

Important Points to Remember..................................................................................................167

Configuration Information................................................................................................................168

BGP Configuration............................................................................................................................168

Enabling BGP...............................................................................................................................169

Configuring AS4 Number Representations................................................................................ 173

Configuring Peer Groups............................................................................................................ 175

Configuring BGP Fast Fall-Over..................................................................................................177

Configuring Passive Peering....................................................................................................... 179

Maintaining Existing AS Numbers During an AS Migration........................................................180

Allowing an AS Number to Appear in its Own AS Path.............................................................. 181

Enabling Graceful Restart............................................................................................................182

Enabling Neighbor Graceful Restart...........................................................................................183

Filtering on an AS-Path Attribute................................................................................................183

Regular Expressions as Filters..................................................................................................... 185

Redistributing Routes..................................................................................................................186

Enabling Additional Paths............................................................................................................187

Configuring IP Community Lists.................................................................................................187

Configuring an IP Extended Community List.............................................................................189

Filtering Routes with Community Lists...................................................................................... 190

Manipulating the COMMUNITY Attribute...................................................................................190

Changing MED Attributes............................................................................................................192

Changing the LOCAL_PREFERENCE Attribute...........................................................................192

Changing the NEXT_HOP Attribute............................................................................................193

Changing the WEIGHT Attribute.................................................................................................194

Enabling Multipath...................................................................................................................... 194

Filtering BGP Routes................................................................................................................... 194

Filtering BGP Routes Using Route Maps.................................................................................... 196

Filtering BGP Routes Using AS-PATH Information.................................................................... 197

Configuring BGP Route Reflectors............................................................................................. 197

Aggregating Routes.....................................................................................................................198

Configuring BGP Confederations...............................................................................................199

Enabling Route Flap Dampening................................................................................................ 199

Changing BGP Timers................................................................................................................ 202

Enabling BGP Neighbor Soft-Reconfiguration..........................................................................202

Route Map Continue.................................................................................................................. 204

Enabling MBGP Configurations....................................................................................................... 204

BGP Regular Expression Optimization.............................................................................................205

Debugging BGP................................................................................................................................ 205

Storing Last and Bad PDUs.........................................................................................................206

Capturing PDUs...........................................................................................................................207

PDU Counters.............................................................................................................................208

Sample Configurations.....................................................................................................................209

9 Content Addressable Memory (CAM)........................................................... 215

CAM Allocation..................................................................................................................................215

Test CAM Usage................................................................................................................................ 217

View CAM Profiles............................................................................................................................. 217

View CAM-ACL Settings....................................................................................................................218

View CAM Usage...............................................................................................................................220

CAM Optimization............................................................................................................................ 220

Troubleshoot CAM Profiling............................................................................................................. 221

CAM Profile Mismatches............................................................................................................. 221

QoS CAM Region Limitation....................................................................................................... 221

Syslog Error When the Table is Full............................................................................................ 221

Syslog Warning Upon 90 Percent Utilization of CAM............................................................... 222

Syslog Warning for Discrepancies Between Configured Extended Prefixes............................ 222

10 Control Plane Policing (CoPP).....................................................................223

Configure Control Plane Policing.................................................................................................... 224

Configuring CoPP for Protocols.................................................................................................225

Configuring CoPP for CPU Queues........................................................................................... 227

Show Commands....................................................................................................................... 228

11 Data Center Bridging (DCB)..........................................................................230

Ethernet Enhancements in Data Center Bridging........................................................................... 230

Priority-Based Flow Control....................................................................................................... 231

Enhanced Transmission Selection..............................................................................................233

Data Center Bridging Exchange Protocol (DCBx)..................................................................... 235

Data Center Bridging in a Traffic Flow....................................................................................... 235

Enabling Data Center Bridging.........................................................................................................236

QoS dot1p Traffic Classification and Queue Assignment...............................................................236

SNMP Support for PFC and Buffer Statistics Tracking.....................................................................237

Configuring Priority-Based Flow Control........................................................................................238

Configuring Lossless Queues.....................................................................................................240

Configuring the PFC Buffer in a Switch Stack............................................................................241

Configure Enhanced Transmission Selection..................................................................................242

ETS Prerequisites and Restrictions............................................................................................. 242

Creating a QoS DCB Output Policy........................................................................................... 243

Creating an ETS Priority Group.................................................................................................. 245

Applying an ETS Output Policy for a Priority Group to an Interface........................................ 246

ETS Operation with DCBx...........................................................................................................247

Configuring Bandwidth Allocation for DCBx CIN..................................................................... 248

Applying DCB Policies in a Switch Stack......................................................................................... 248

Applying DCB Policies with an ETS Configuration..........................................................................249

Configure a DCBx Operation........................................................................................................... 249

DCBx Operation..........................................................................................................................250

DCBx Port Roles..........................................................................................................................250

DCB Configuration Exchange.................................................................................................... 252

Configuration Source Election................................................................................................... 252

Propagation of DCB Information............................................................................................... 253

Auto-Detection and Manual Configuration of the DCBx Version............................................ 253

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

Configuration Example for DSCP and PFC Priorities.................................................................254

DCBx Example.............................................................................................................................255

DCBx Prerequisites and Restrictions..........................................................................................256

Configuring DCBx.......................................................................................................................256

Verifying the DCB Configuration..................................................................................................... 260

Generation of PFC for a Priority for Untagged Packets...................................................................271

Operations on Untagged Packets.................................................................................................... 272

Performing PFC Using DSCP Bits Instead of 802.1p Bits.................................................................272

PFC and ETS Configuration Examples............................................................................................. 273

Using PFC and ETS to Manage Data Center Traffic.........................................................................273

PFC and ETS Configuration Command Examples.....................................................................275

Using PFC and ETS to Manage Converged Ethernet Traffic in a Switch Stack........................ 276

Hierarchical Scheduling in ETS Output Policies........................................................................ 276

Configuring DCB Maps and its Attributes.........................................................................................277

DCB Map: Configuration Procedure.......................................................................................... 277

Important Points to Remember..................................................................................................278

Applying a DCB Map on a Port................................................................................................... 278

Configuring PFC without a DCB Map........................................................................................ 279

Configuring Lossless Queues.....................................................................................................280

Data Center Bridging: Default Configuration.................................................................................. 281

Configuring PFC and ETS in a DCB Map..........................................................................................281

PFC Configuration Notes............................................................................................................281

PFC Prerequisites and Restrictions.............................................................................................282

ETS Configuration Notes............................................................................................................ 283

ETS Prerequisites and Restrictions............................................................................................. 283

Priority-Based Flow Control Using Dynamic Buffer Method..........................................................284

Pause and Resume of Traffic......................................................................................................284

Buffer Sizes for Lossless or PFC Packets....................................................................................285

Interworking of DCB Map With DCB Buffer Threshold Settings.....................................................285

Configuring the Dynamic Buffer Method........................................................................................286

Applying a DCB Map in a Switch Stack ...........................................................................................288

12 Dynamic Host Configuration Protocol (DHCP)........................................289

DHCP Packet Format and Options.................................................................................................. 289

Assign an IP Address using DHCP.................................................................................................... 291

Implementation Information............................................................................................................292

Configure the System to be a DHCP Server....................................................................................293

Configuring the Server for Automatic Address Allocation........................................................ 293

Specifying a Default Gateway.....................................................................................................295

Configure a Method of Hostname Resolution.......................................................................... 295

Using DNS for Address Resolution.............................................................................................295

Using NetBIOS WINS for Address Resolution............................................................................ 295

Creating Manual Binding Entries................................................................................................296

Debugging the DHCP Server......................................................................................................296

Using DHCP Clear Commands.................................................................................................. 296

Configure the System to be a DHCP Client.....................................................................................297

Configuring the DHCP Client System........................................................................................ 297

DHCP Client on a Management Interface................................................................................. 299

DHCP Client Operation with Other Features............................................................................ 299

Configure the System for User Port Stacking (Option 230)........................................................... 300

Configure Secure DHCP...................................................................................................................301

Option 82.....................................................................................................................................301

DHCP Snooping..........................................................................................................................302

Drop DHCP Packets on Snooped VLANs Only..........................................................................304

Dynamic ARP Inspection............................................................................................................ 304

Configuring Dynamic ARP Inspection....................................................................................... 305

Source Address Validation................................................................................................................306

Enabling IP Source Address Validation...................................................................................... 306

DHCP MAC Source Address Validation......................................................................................307

Enabling IP+MAC Source Address Validation............................................................................ 307

13 Equal Cost Multi-Path (ECMP)..................................................................... 309

ECMP for Flow-Based Affinity..........................................................................................................309

Configuring the Hash Algorithm................................................................................................309

Enabling Deterministic ECMP Next Hop....................................................................................309

Configuring the Hash Algorithm Seed....................................................................................... 310

Link Bundle Monitoring.....................................................................................................................310

Managing ECMP Group Paths..................................................................................................... 311

Creating an ECMP Group Bundle............................................................................................... 312

Modifying the ECMP Group Threshold.......................................................................................312

Support for /128 IPv6 and /32 IPv4 Prefixes in Layer 3 Host Table and LPM Table................. 313

Support for ECMP in host table.................................................................................................. 313

Support for moving /128 IPv6 Prefixes and /32 IPv4 Prefixes .................................................. 314

14 FCoE Transit.....................................................................................................315

Fibre Channel over Ethernet.............................................................................................................315

Ensure Robustness in a Converged Ethernet Network................................................................... 315

FIP Snooping on Ethernet Bridges....................................................................................................317

FIP Snooping in a Switch Stack.........................................................................................................319

Using FIP Snooping........................................................................................................................... 319

FIP Snooping Prerequisites......................................................................................................... 319

Important Points to Remember................................................................................................. 320

Enabling the FCoE Transit Feature.............................................................................................320

Enable FIP Snooping on VLANs.................................................................................................. 321

Configure the FC-MAP Value......................................................................................................321

Configure a Port for a Bridge-to-Bridge Link............................................................................ 321

Configure a Port for a Bridge-to-FCF Link.................................................................................321

Impact on Other Software Features........................................................................................... 321

FIP Snooping Restrictions...........................................................................................................322

Configuring FIP Snooping...........................................................................................................322

Displaying FIP Snooping Information...............................................................................................323

FCoE Transit Configuration Example...............................................................................................329

15 Flex Hash and Optimized Boot-Up..............................................................331

Flex Hash Capability Overview..........................................................................................................331

Configuring the Flex Hash Mechanism............................................................................................ 331

Configuring Fast Boot and LACP Fast Switchover...........................................................................332

Optimizing the Boot Time................................................................................................................332

Booting Process When Optimized Boot Time Mechanism is Enabled.....................................333

Guidelines for Configuring Optimized Booting Mechanism.....................................................333

Interoperation of Applications with Fast Boot and System States..................................................334

LACP and IPv4 Routing...............................................................................................................334

LACP and IPv6 Routing............................................................................................................... 335

BGP Graceful Restart.................................................................................................................. 335

Cold Boot Caused by Power Cycling the System..................................................................... 335

Unexpected Reload of the System.............................................................................................335

Software Upgrade....................................................................................................................... 336

LACP Fast Switchover................................................................................................................. 336

Changes to BGP Multipath......................................................................................................... 336

Delayed Installation of ECMP Routes Into BGP.........................................................................336

RDMA Over Converged Ethernet (RoCE) Overview........................................................................ 337

Preserving 802.1Q VLAN Tag Value for Lite Subinterfaces.............................................................338

16 Force10 Resilient Ring Protocol (FRRP).....................................................339

Protocol Overview............................................................................................................................339

Ring Status.................................................................................................................................. 340

Multiple FRRP Rings.....................................................................................................................341

Important FRRP Points................................................................................................................ 341

Important FRRP Concepts.......................................................................................................... 341

Implementing FRRP.......................................................................................................................... 343

FRRP Configuration.......................................................................................................................... 343

Creating the FRRP Group........................................................................................................... 343

Configuring the Control VLAN...................................................................................................344

Configuring and Adding the Member VLANs.............................................................................345

Setting the FRRP Timers............................................................................................................. 346

Clearing the FRRP Counters....................................................................................................... 347

Viewing the FRRP Configuration................................................................................................ 347

Viewing the FRRP Information....................................................................................................347

Troubleshooting FRRP......................................................................................................................348

Configuration Checks.................................................................................................................348

Sample Configuration and Topology.............................................................................................. 348

17 GARP VLAN Registration Protocol (GVRP)................................................ 350

Important Points to Remember....................................................................................................... 350

Configure GVRP................................................................................................................................ 351

Related Configuration Tasks....................................................................................................... 351

Enabling GVRP Globally....................................................................................................................352

Enabling GVRP on a Layer 2 Interface............................................................................................. 352

Configure GVRP Registration........................................................................................................... 352

Configure a GARP Timer...................................................................................................................353

18 Internet Group Management Protocol (IGMP).........................................355

IGMP Implementation Information..................................................................................................355

IGMP Protocol Overview.................................................................................................................. 355

IGMP Version 2............................................................................................................................355

IGMP Version 3............................................................................................................................357

Configure IGMP................................................................................................................................ 360

Related Configuration Tasks...................................................................................................... 360

Viewing IGMP Enabled Interfaces.....................................................................................................361

Selecting an IGMP Version................................................................................................................361

Viewing IGMP Groups.......................................................................................................................362

Adjusting Timers............................................................................................................................... 362

Adjusting Query and Response Timers......................................................................................362

Adjusting the IGMP Querier Timeout Value...............................................................................363

Configuring a Static IGMP Group.....................................................................................................363

Enabling IGMP Immediate-Leave.................................................................................................... 364

IGMP Snooping.................................................................................................................................364

IGMP Snooping Implementation Information...........................................................................364

Configuring IGMP Snooping...................................................................................................... 364

Removing a Group-Port Association......................................................................................... 365

Disabling Multicast Flooding...................................................................................................... 365

Specifying a Port as Connected to a Multicast Router..............................................................366

Configuring the Switch as Querier.............................................................................................366

Fast Convergence after MSTP Topology Changes..........................................................................367

Egress Interface Selection (EIS) for HTTP and IGMP Applications..................................................367

Protocol Separation....................................................................................................................368

Enabling and Disabling Management Egress Interface Selection.............................................369

Handling of Management Route Configuration........................................................................370

Handling of Switch-Initiated Traffic........................................................................................... 370

Handling of Switch-Destined Traffic.......................................................................................... 371

Handling of Transit Traffic (Traffic Separation).......................................................................... 372

Mapping of Management Applications and Traffic Type...........................................................372

Behavior of Various Applications for Switch-Initiated Traffic ...................................................373

Behavior of Various Applications for Switch-Destined Traffic ................................................. 374

Interworking of EIS With Various Applications...........................................................................375

Designating a Multicast Router Interface.........................................................................................376

19 Interfaces......................................................................................................... 377

Basic Interface Configuration........................................................................................................... 377

Advanced Interface Configuration................................................................................................... 377

Interface Types..................................................................................................................................378

View Basic Interface Information..................................................................................................... 378

Enabling a Physical Interface........................................................................................................... 380

Physical Interfaces............................................................................................................................380

Configuration Task List for Physical Interfaces..........................................................................381

40G to 1G Breakout Cable Adaptor............................................................................................381

Overview of Layer Modes........................................................................................................... 381

Configuring Layer 2 (Data Link) Mode....................................................................................... 382

Configuring Layer 2 (Interface) Mode........................................................................................382

Configuring Layer 3 (Network) Mode.........................................................................................383

Configuring Layer 3 (Interface) Mode........................................................................................ 383

Egress Interface Selection (EIS)........................................................................................................384

Important Points to Remember................................................................................................. 384

Configuring EIS........................................................................................................................... 385

Management Interfaces....................................................................................................................385

Configuring Management Interfaces......................................................................................... 385

Configuring Management Interfaces on the S-Series...............................................................386

VLAN Interfaces................................................................................................................................ 386

Loopback Interfaces......................................................................................................................... 387

Null Interfaces...................................................................................................................................388

Port Channel Interfaces....................................................................................................................388

Port Channel Definition and Standards..................................................................................... 388

Port Channel Benefits.................................................................................................................389

Port Channel Implementation....................................................................................................389

10/100/1000 Mbps Interfaces in Port Channels........................................................................389

Configuration Tasks for Port Channel Interfaces......................................................................390

Creating a Port Channel.............................................................................................................390

Adding a Physical Interface to a Port Channel...........................................................................391

Reassigning an Interface to a New Port Channel......................................................................393

Configuring the Minimum Oper Up Links in a Port Channel....................................................393

.....................................................................................................................................................394

Assigning an IP Address to a Port Channel................................................................................394

Deleting or Disabling a Port Channel.........................................................................................395

Load Balancing Through Port Channels....................................................................................395

Load-Balancing on the S- Series................................................................................................395

Changing the Hash Algorithm....................................................................................................396

Bulk Configuration............................................................................................................................397

Interface Range........................................................................................................................... 397

Bulk Configuration Examples..................................................................................................... 398

Defining Interface Range Macros.................................................................................................... 399

Define the Interface Range.........................................................................................................399

Choosing an Interface-Range Macro........................................................................................400

Monitoring and Maintaining Interfaces........................................................................................... 400

Maintenance Using TDR............................................................................................................. 401

Splitting QSFP Ports to SFP+ Ports.................................................................................................. 402

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................402

Important Points to Remember................................................................................................. 403

Support for LM4 Optics..............................................................................................................404

Example Scenarios......................................................................................................................404

Link Dampening............................................................................................................................... 408

Important Points to Remember.................................................................................................408

Enabling Link Dampening.......................................................................................................... 408

Link Bundle Monitoring.....................................................................................................................410

Using Ethernet Pause Frames for Flow Control.............................................................................. 410

Threshold Settings....................................................................................................................... 411

Enabling Pause Frames................................................................................................................411

Configure the MTU Size on an Interface..........................................................................................412

Port-Pipes..........................................................................................................................................413

Auto-Negotiation on Ethernet Interfaces........................................................................................ 413

Setting the Speed and Duplex Mode of Ethernet Interfaces.....................................................414

Set Auto-Negotiation Options....................................................................................................415

View Advanced Interface Information..............................................................................................416

Configuring the Interface Sampling Size....................................................................................417

Dynamic Counters............................................................................................................................ 418

Clearing Interface Counters....................................................................................................... 418

Enhanced Validation of Interface Ranges........................................................................................419

Compressing Configuration Files.....................................................................................................419

20 IPv4 Routing................................................................................................... 423

IP Addresses...................................................................................................................................... 423

Implementation Information......................................................................................................423

Configuration Tasks for IP Addresses.............................................................................................. 423

Assigning IP Addresses to an Interface............................................................................................424

Configuring Static Routes.................................................................................................................425

Configure Static Routes for the Management Interface.................................................................426

Using the Configured Source IP Address in ICMP Messages..........................................................427

Configuring the ICMP Source Interface.....................................................................................427

Configuring the Duration to Establish a TCP Connection..............................................................427

Enabling Directed Broadcast............................................................................................................428

Resolution of Host Names............................................................................................................... 428

Enabling Dynamic Resolution of Host Names................................................................................ 429

Specifying the Local System Domain and a List of Domains..........................................................429

Configuring DNS with Traceroute................................................................................................... 430

ARP.....................................................................................................................................................431

Configuration Tasks for ARP.............................................................................................................431

Configuring Static ARP Entries..........................................................................................................431

Enabling Proxy ARP...........................................................................................................................432

Clearing ARP Cache..........................................................................................................................432

ARP Learning via Gratuitous ARP..................................................................................................... 433

Enabling ARP Learning via Gratuitous ARP...................................................................................... 433

ARP Learning via ARP Request......................................................................................................... 433

Configuring ARP Retries................................................................................................................... 434

ICMP.................................................................................................................................................. 435

Configuration Tasks for ICMP.......................................................................................................... 435

Enabling ICMP Unreachable Messages............................................................................................435

UDP Helper....................................................................................................................................... 436

Configure UDP Helper................................................................................................................436

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

Enabling UDP Helper........................................................................................................................436

Configuring a Broadcast Address.....................................................................................................437

Configurations Using UDP Helper....................................................................................................437

UDP Helper with Broadcast-All Addresses...................................................................................... 437

UDP Helper with Subnet Broadcast Addresses............................................................................... 438

UDP Helper with Configured Broadcast Addresses........................................................................ 439

UDP Helper with No Configured Broadcast Addresses.................................................................. 439

Troubleshooting UDP Helper.......................................................................................................... 440

21 IPv6 Routing....................................................................................................441

Protocol Overview............................................................................................................................ 441

Extended Address Space.............................................................................................................441

Stateless Autoconfiguration........................................................................................................441

IPv6 Headers............................................................................................................................... 442

Longest Prefix Match (LPM) Table and IPv6 /65 – /128 support.............................................. 442

IPv6 Header Fields...................................................................................................................... 444

Extension Header Fields............................................................................................................. 445

Addressing...................................................................................................................................446

Implementing IPv6 with Dell Networking OS................................................................................. 448

ICMPv6..............................................................................................................................................450

Path MTU Discovery......................................................................................................................... 450

IPv6 Neighbor Discovery.................................................................................................................. 451

IPv6 Neighbor Discovery of MTU Packets................................................................................. 452

Configuring the IPv6 Recursive DNS Server.............................................................................. 452

Debugging IPv6 RDNSS Information Sent to the Host .............................................................453

Displaying IPv6 RDNSS Information...........................................................................................453

Secure Shell (SSH) Over an IPv6 Transport......................................................................................454

Configuration Tasks for IPv6............................................................................................................454

Adjusting Your CAM-Profile........................................................................................................455

Assigning an IPv6 Address to an Interface.................................................................................455

Assigning a Static IPv6 Route..................................................................................................... 456

Configuring Telnet with IPv6......................................................................................................457

SNMP over IPv6...........................................................................................................................457

Showing IPv6 Information.......................................................................................................... 457

Showing an IPv6 Interface..........................................................................................................458

Showing IPv6 Routes..................................................................................................................459

Showing the Running-Configuration for an Interface..............................................................460

Clearing IPv6 Routes.................................................................................................................. 460

22 iSCSI Optimization.........................................................................................462

iSCSI Optimization Overview........................................................................................................... 462

Monitoring iSCSI Traffic Flows................................................................................................... 464

Application of Quality of Service to iSCSI Traffic Flows............................................................464

Information Monitored in iSCSI Traffic Flows............................................................................464

Detection and Auto-Configuration for Dell EqualLogic Arrays................................................ 465

Configuring Detection and Ports for Dell Compellent Arrays..................................................466

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer........................................466

Enable and Disable iSCSI Optimization..................................................................................... 466

Default iSCSI Optimization Values................................................................................................... 467

iSCSI Optimization Prerequisites..................................................................................................... 468

Configuring iSCSI Optimization.......................................................................................................468

Displaying iSCSI Optimization Information..................................................................................... 470

23 Intermediate System to Intermediate System.......................................... 472

IS-IS Protocol Overview................................................................................................................... 472

IS-IS Addressing................................................................................................................................ 472

Multi-Topology IS-IS.........................................................................................................................473

Transition Mode.......................................................................................................................... 474

Interface Support........................................................................................................................ 474

Adjacencies................................................................................................................................. 474

Graceful Restart................................................................................................................................ 474

Timers.......................................................................................................................................... 475

Implementation Information............................................................................................................ 475

Configuration Information............................................................................................................... 476

Configuration Tasks for IS-IS......................................................................................................476

Configuring the Distance of a Route......................................................................................... 485

Changing the IS-Type.................................................................................................................485

Redistributing IPv4 Routes......................................................................................................... 488

Redistributing IPv6 Routes......................................................................................................... 489

Configuring Authentication Passwords..................................................................................... 490

Setting the Overload Bit............................................................................................................. 490

Debugging IS-IS.......................................................................................................................... 491

IS-IS Metric Styles............................................................................................................................. 492

Configure Metric Values...................................................................................................................492

Maximum Values in the Routing Table...................................................................................... 493

Change the IS-IS Metric Style in One Level Only......................................................................493

Leaks from One Level to Another.............................................................................................. 495

Sample Configurations.....................................................................................................................495

24 Link Aggregation Control Protocol (LACP).............................................. 498

Introduction to Dynamic LAGs and LACP....................................................................................... 498

Important Points to Remember................................................................................................. 498

LACP Modes................................................................................................................................499

Configuring LACP Commands...................................................................................................499

LACP Configuration Tasks................................................................................................................500

Creating a LAG............................................................................................................................500

Configuring the LAG Interfaces as Dynamic..............................................................................501

Setting the LACP Long Timeout................................................................................................. 501

Monitoring and Debugging LACP.............................................................................................. 502

Shared LAG State Tracking...............................................................................................................502

Configuring Shared LAG State Tracking.................................................................................... 503

Important Points about Shared LAG State Tracking..................................................................504

LACP Basic Configuration Example................................................................................................. 505

Configure a LAG on ALPHA........................................................................................................505

25 Layer 2...............................................................................................................513

Manage the MAC Address Table.......................................................................................................513

Clearing the MAC Address Table................................................................................................ 513

Setting the Aging Time for Dynamic Entries.............................................................................. 513

Configuring a Static MAC Address..............................................................................................514

Displaying the MAC Address Table.............................................................................................514

MAC Learning Limit...........................................................................................................................514

Setting the MAC Learning Limit.................................................................................................. 515

mac learning-limit Dynamic....................................................................................................... 515

mac learning-limit mac-address-sticky..................................................................................... 516

mac learning-limit station-move................................................................................................516

mac learning-limit no-station-move......................................................................................... 516

Learning Limit Violation Actions................................................................................................. 517

Setting Station Move Violation Actions.......................................................................................517

Recovering from Learning Limit and Station Move Violations.................................................. 518

NIC Teaming..................................................................................................................................... 518

Configure Redundant Pairs...............................................................................................................519

Important Points about Configuring Redundant Pairs...............................................................521

Far-End Failure Detection.................................................................................................................522

FEFD State Changes....................................................................................................................523

Configuring FEFD........................................................................................................................524

Enabling FEFD on an Interface................................................................................................... 525

Debugging FEFD......................................................................................................................... 526

26 Link Layer Discovery Protocol (LLDP)........................................................528

802.1AB (LLDP) Overview.................................................................................................................528

Protocol Data Units.....................................................................................................................528

Optional TLVs....................................................................................................................................529

Management TLVs...................................................................................................................... 529

TIA-1057 (LLDP-MED) Overview...................................................................................................... 531

TIA Organizationally Specific TLVs.............................................................................................532

Configure LLDP.................................................................................................................................536

Related Configuration Tasks.......................................................................................................536

Important Points to Remember..................................................................................................537

LLDP Compatibility......................................................................................................................537

CONFIGURATION versus INTERFACE Configurations.................................................................... 537

Enabling LLDP...................................................................................................................................538

Disabling and Undoing LLDP......................................................................................................538

Enabling LLDP on Management Ports............................................................................................. 538

Disabling and Undoing LLDP on Management Ports................................................................538

Advertising TLVs................................................................................................................................539

Viewing the LLDP Configuration......................................................................................................540

Viewing Information Advertised by Adjacent LLDP Agents.............................................................541

Configuring LLDPDU Intervals......................................................................................................... 542

Configuring Transmit and Receive Mode........................................................................................ 542

Configuring a Time to Live............................................................................................................... 543

Debugging LLDP...............................................................................................................................544

Relevant Management Objects........................................................................................................545

27 Microsoft Network Load Balancing............................................................ 551

NLB Unicast Mode Scenario............................................................................................................. 551

NLB Multicast Mode Scenario.......................................................................................................... 552

Limitations With Enabling NLB on Switches.................................................................................... 552

Benefits and Working of Microsoft Clustering.................................................................................552

Enable and Disable VLAN Flooding .................................................................................................553

Configuring a Switch for NLB ..........................................................................................................553

..................................................................................................................................................... 553

28 Multicast Source Discovery Protocol (MSDP)...........................................554

Protocol Overview............................................................................................................................554

Anycast RP.........................................................................................................................................556

Implementation Information............................................................................................................556

Configure Multicast Source Discovery Protocol............................................................................. 556

Related Configuration Tasks.......................................................................................................556

Enable MSDP.....................................................................................................................................560

Manage the Source-Active Cache....................................................................................................561

Viewing the Source-Active Cache..............................................................................................561

Limiting the Source-Active Cache............................................................................................. 562

Clearing the Source-Active Cache.............................................................................................562

Enabling the Rejected Source-Active Cache.............................................................................562

Accept Source-Active Messages that Fail the RFP Check...............................................................562

Specifying Source-Active Messages................................................................................................ 566

Limiting the Source-Active Messages from a Peer..........................................................................567

Preventing MSDP from Caching a Local Source............................................................................. 567

Preventing MSDP from Caching a Remote Source.........................................................................568

Preventing MSDP from Advertising a Local Source........................................................................ 569

Logging Changes in Peership States................................................................................................570

Terminating a Peership.....................................................................................................................570

Clearing Peer Statistics..................................................................................................................... 570

Debugging MSDP.............................................................................................................................. 571

MSDP with Anycast RP...................................................................................................................... 571

Configuring Anycast RP.................................................................................................................... 573

Reducing Source-Active Message Flooding.............................................................................. 573

Specifying the RP Address Used in SA Messages.......................................................................573

MSDP Sample Configurations.......................................................................................................... 576

29 Multiple Spanning Tree Protocol (MSTP).................................................. 579

Protocol Overview............................................................................................................................ 579

Spanning Tree Variations..................................................................................................................580

Implementation Information......................................................................................................580

Configure Multiple Spanning Tree Protocol....................................................................................580

Related Configuration Tasks...................................................................................................... 580

Enable Multiple Spanning Tree Globally.......................................................................................... 581

Adding and Removing Interfaces..................................................................................................... 581

Creating Multiple Spanning Tree Instances..................................................................................... 581

Influencing MSTP Root Selection.....................................................................................................583

Interoperate with Non-Dell Networking OS Bridges...................................................................... 583

Changing the Region Name or Revision......................................................................................... 584

Modifying Global Parameters...........................................................................................................584

Modifying the Interface Parameters.................................................................................................585

Configuring an EdgePort..................................................................................................................586

Flush MAC Addresses after a Topology Change............................................................................. 587

MSTP Sample Configurations...........................................................................................................587

Router 1 Running-ConfigurationRouter 2 Running-ConfigurationRouter 3 Running-

ConfigurationSFTOS Example Running-Configuration............................................................ 588

Debugging and Verifying MSTP Configurations.............................................................................. 591

30 Multicast Features..........................................................................................594

Enabling IP Multicast........................................................................................................................ 594

Multicast with ECMP.........................................................................................................................594

Implementation Information............................................................................................................595

First Packet Forwarding for Lossless Multicast................................................................................596

Multicast Policies.............................................................................................................................. 596

IPv4 Multicast Policies................................................................................................................ 596

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