Dell PowerSwitch S4810P User guide

Dell Configuration Guide for the S4810 System

9.11(0.0)

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

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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2017 - 01

Rev. A00

Contents

1 About this Guide...........................................................................................................................................34

Audience............................................................................................................................................................................34

Conventions......................................................................................................................................................................34

Related Documents......................................................................................................................................................... 34

2 Configuration Fundamentals........................................................................................................................35

Accessing the Command Line........................................................................................................................................35

CLI Modes.........................................................................................................................................................................35

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

The do Command............................................................................................................................................................ 40

Undoing Commands........................................................................................................................................................ 40

Obtaining Help...................................................................................................................................................................41

Entering and Editing Commands.................................................................................................................................... 41

Command History............................................................................................................................................................42

Filtering show Command Outputs.................................................................................................................................42

Example of the grep Keyword..................................................................................................................................42

Multiple Users in Configuration Mode...........................................................................................................................43

3 Getting Started........................................................................................................................................... 44

Console Access................................................................................................................................................................45

Serial Console.............................................................................................................................................................45

Accessing the CLI Interface and Running Scripts Using SSH................................................................................... 46

Entering CLI commands Using an SSH Connection..............................................................................................46

Executing Local CLI Scripts Using an SSH Connection........................................................................................46

Default Configuration...................................................................................................................................................... 47

Configuring a Host Name................................................................................................................................................47

Accessing the System Remotely................................................................................................................................... 47

Accessing the System Remotely............................................................................................................................. 47

Configure the Management Port IP Address.........................................................................................................48

Configure a Management Route............................................................................................................................. 48

Configuring a Username and Password..................................................................................................................48

Configuring the Enable Password................................................................................................................................. 49

Configuration File Management.....................................................................................................................................49

Copy Files to and from the System.........................................................................................................................49

Mounting an NFS File System................................................................................................................................. 50

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

Configure the Overload Bit for a Startup Scenario...............................................................................................52

Viewing Files...............................................................................................................................................................52

Compressing Configuration Files............................................................................................................................. 53

Managing the File System.............................................................................................................................................. 56

Enabling Software Features on Devices Using a Command Option.........................................................................56

View Command History.................................................................................................................................................. 57

Contents

3

Upgrading Dell Networking OS...................................................................................................................................... 57

Verify Software Images Before Installation.................................................................................................................. 57

Using HTTP for File Transfers....................................................................................................................................... 58

4 Management............................................................................................................................................... 60

Configuring Privilege Levels........................................................................................................................................... 60

Creating a Custom Privilege Level........................................................................................................................... 61

Removing a Command from EXEC Mode...............................................................................................................61

Moving a Command from EXEC Privilege Mode to EXEC Mode........................................................................ 61

Allowing Access to CONFIGURATION Mode Commands.................................................................................... 61

Allowing Access to Different Modes........................................................................................................................61

Applying a Privilege Level to a Username...............................................................................................................63

Applying a Privilege Level to a Terminal Line......................................................................................................... 63

Configuring Logging........................................................................................................................................................ 63

Audit and Security Logs............................................................................................................................................64

Configuring Logging Format .................................................................................................................................. 66

Display the Logging Buffer and the Logging Configuration................................................................................. 66

Setting Up a Secure Connection to a Syslog Server............................................................................................ 67

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

Track Login Activity.........................................................................................................................................................68

Restrictions for Tracking Login Activity..................................................................................................................68

Configuring Login Activity Tracking........................................................................................................................ 68

Display Login Statistics............................................................................................................................................. 69

Limit Concurrent Login Sessions................................................................................................................................... 70

Restrictions for Limiting the Number of Concurrent Sessions............................................................................ 70

Configuring Concurrent Session Limit..................................................................................................................... 71

Enabling the System to Clear Existing Sessions.....................................................................................................71

Enabling Secured CLI Mode........................................................................................................................................... 72

Log Messages in the Internal Buffer............................................................................................................................. 72

Configuration Task List for System Log Management......................................................................................... 72

Disabling System Logging............................................................................................................................................... 72

Sending System Messages to a Syslog Server............................................................................................................73

Configuring a UNIX System as a Syslog Server.....................................................................................................73

Changing System Logging Settings.............................................................................................................................. 73

Display the Logging Buffer and the Logging Configuration....................................................................................... 74

Configuring a UNIX Logging Facility Level................................................................................................................... 75

Synchronizing Log Messages.........................................................................................................................................76

Enabling Timestamp on Syslog Messages....................................................................................................................76

File Transfer Services...................................................................................................................................................... 77

Configuration Task List for File Transfer Services.................................................................................................77

Enabling the FTP Server........................................................................................................................................... 77

Configuring FTP Server Parameters....................................................................................................................... 77

Configuring FTP Client Parameters.........................................................................................................................78

Terminal Lines...................................................................................................................................................................78

Denying and Permitting Access to a Terminal Line............................................................................................... 79

Configuring Login Authentication for Terminal Lines............................................................................................80

4

Contents

Setting Timeout for EXEC Privilege Mode....................................................................................................................81

Using Telnet to get to Another Network Device..........................................................................................................81

Lock CONFIGURATION Mode.......................................................................................................................................82

Viewing the Configuration Lock Status.................................................................................................................. 82

Recovering from a Forgotten Password...................................................................................................................... 82

Recovering from a Forgotten Enable Password....................................................................................................83

Recovering from a Failed Start...................................................................................................................................... 84

Restoring the Factory Default Settings........................................................................................................................84

Important Points to Remember............................................................................................................................... 85

Restoring Factory Default Environment Variables................................................................................................ 85

5 802.1X......................................................................................................................................................... 87

Port-Authentication Process..........................................................................................................................................89

EAP over RADIUS......................................................................................................................................................89

Configuring 802.1X.......................................................................................................................................................... 90

Related Configuration Tasks.................................................................................................................................... 90

Important Points to Remember..................................................................................................................................... 90

Enabling 802.1X.................................................................................................................................................................91

Configuring MAC addresses for a do1x Profile............................................................................................................ 92

Configuring Request Identity Re-Transmissions..........................................................................................................93

Configuring a Quiet Period after a Failed Authentication.....................................................................................93

Forcibly Authorizing or Unauthorizing a Port...............................................................................................................94

Re-Authenticating a Port................................................................................................................................................95

Configuring Timeouts......................................................................................................................................................96

Configuring Dynamic VLAN Assignment with Port Authentication...........................................................................97

Guest and Authentication-Fail VLANs.......................................................................................................................... 98

Configuring a Guest VLAN....................................................................................................................................... 98

Configuring an Authentication-Fail VLAN...............................................................................................................98

Configuring dot1x Profile ............................................................................................................................................... 99

Configuring the Static MAB and MAB Profile ...........................................................................................................100

Configuring Critical VLAN .............................................................................................................................................101

6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)................................. 102

Optimizing CAM Utilization During the Attachment of ACLs to VLANs.................................................................102

Guidelines for Configuring ACL VLAN Groups........................................................................................................... 103

Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters.............................................. 103

Configuring ACL VLAN Groups..............................................................................................................................103

Configuring FP Blocks for VLAN Parameters.......................................................................................................104

Viewing CAM Usage......................................................................................................................................................105

Allocating FP Blocks for VLAN Processes..................................................................................................................106

7 Access Control Lists (ACLs)...................................................................................................................... 108

IP Access Control Lists (ACLs)....................................................................................................................................109

CAM Usage................................................................................................................................................................110

Implementing ACLs on Dell Networking OS.......................................................................................................... 110

Important Points to Remember.....................................................................................................................................112

Contents

5

Configuration Task List for Route Maps................................................................................................................112

Configuring Match Routes.......................................................................................................................................114

Configuring Set Conditions......................................................................................................................................115

Configure a Route Map for Route Redistribution.................................................................................................116

Configure a Route Map for Route Tagging........................................................................................................... 117

Continue Clause.........................................................................................................................................................117

IP Fragment Handling.....................................................................................................................................................118

IP Fragments ACL Examples................................................................................................................................... 118

Layer 4 ACL Rules Examples................................................................................................................................... 118

Configure a Standard IP ACL........................................................................................................................................ 119

Configuring a Standard IP ACL Filter.....................................................................................................................120

Configure an Extended IP ACL......................................................................................................................................121

Configuring Filters with a Sequence Number........................................................................................................121

Configuring Filters Without a Sequence Number................................................................................................ 122

Configure Layer 2 and Layer 3 ACLs...........................................................................................................................123

Assign an IP ACL to an Interface..................................................................................................................................124

Applying an IP ACL.........................................................................................................................................................124

Counting ACL Hits................................................................................................................................................... 125

Configure Ingress ACLs.................................................................................................................................................125

Configure Egress ACLs..................................................................................................................................................125

Applying Egress Layer 3 ACLs (Control-Plane)................................................................................................... 126

IP Prefix Lists.................................................................................................................................................................. 127

Implementation Information.................................................................................................................................... 127

Configuration Task List for Prefix Lists................................................................................................................. 127

ACL Resequencing..........................................................................................................................................................131

Resequencing an ACL or Prefix List....................................................................................................................... 131

Route Maps.....................................................................................................................................................................133

Implementation Information.................................................................................................................................... 133

Logging of ACL Processes............................................................................................................................................133

Guidelines for Configuring ACL Logging............................................................................................................... 134

Configuring ACL Logging........................................................................................................................................ 134

Flow-Based Monitoring Support for ACLs..................................................................................................................135

Behavior of Flow-Based Monitoring...................................................................................................................... 135

Enabling Flow-Based Monitoring............................................................................................................................136

8 Bidirectional Forwarding Detection (BFD)..................................................................................................138

How BFD Works.............................................................................................................................................................138

BFD Packet Format................................................................................................................................................. 139

BFD Sessions............................................................................................................................................................ 140

BFD Three-Way Handshake.................................................................................................................................... 141

Session State Changes............................................................................................................................................143

Important Points to Remember....................................................................................................................................143

Configure BFD................................................................................................................................................................ 143

Configure BFD for Physical Ports.......................................................................................................................... 144

Configure BFD for Static Routes........................................................................................................................... 145

Configure BFD for OSPF.........................................................................................................................................148

6

Contents

Configure BFD for OSPFv3.....................................................................................................................................151

Configure BFD for IS-IS...........................................................................................................................................152

Configure BFD for BGP...........................................................................................................................................154

Configure BFD for VRRP......................................................................................................................................... 161

Configuring Protocol Liveness................................................................................................................................164

Troubleshooting BFD............................................................................................................................................... 164

Establishing Sessions for Static Routes................................................................................................................ 165

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

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

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

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

Route Reflectors............................................................................................................................................................. 171

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

Best Path Selection Criteria....................................................................................................................................173

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

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

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

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

AS Path......................................................................................................................................................................177

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

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

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

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

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

Ignore Router-ID in Best-Path Calculation............................................................................................................179

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

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

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

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

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

Configuration Information............................................................................................................................................. 183

BGP Configuration......................................................................................................................................................... 183

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

Configuring AS4 Number Representations...........................................................................................................187

Configuring Peer Groups.........................................................................................................................................189

Configuring BGP Fast Fall-Over..............................................................................................................................191

Configuring Passive Peering................................................................................................................................... 193

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

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

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

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

Enabling or disabling BGP neighbors..................................................................................................................... 196

Filtering on an AS-Path Attribute...........................................................................................................................198

Regular Expressions as Filters................................................................................................................................ 199

Redistributing Routes............................................................................................................................................. 200

Contents

7

Enabling Additional Paths........................................................................................................................................201

Configuring IP Community Lists.............................................................................................................................201

Configuring an IP Extended Community List.......................................................................................................202

Filtering Routes with Community Lists.................................................................................................................203

Manipulating the COMMUNITY Attribute............................................................................................................204

Changing MED Attributes...................................................................................................................................... 205

Changing the LOCAL_PREFERENCE Attribute................................................................................................. 206

Configuring the local System or a Different System to be the Next Hop for BGP-Learned Routes...........206

Changing the WEIGHT Attribute...........................................................................................................................207

Enabling Multipath...................................................................................................................................................207

Filtering BGP Routes...............................................................................................................................................208

Filtering BGP Routes Using Route Maps............................................................................................................. 209

Filtering BGP Routes Using AS-PATH Information............................................................................................. 210

Configuring BGP Route Reflectors........................................................................................................................210

Aggregating Routes.................................................................................................................................................. 211

Configuring BGP Confederations............................................................................................................................211

Enabling Route Flap Dampening.............................................................................................................................212

Changing BGP Timers..............................................................................................................................................214

Enabling BGP Neighbor Soft-Reconfiguration.....................................................................................................215

Enabling or disabling BGP neighbors..................................................................................................................... 216

Route Map Continue................................................................................................................................................217

Enabling MBGP Configurations.................................................................................................................................... 217

BGP Regular Expression Optimization.........................................................................................................................218

Debugging BGP.............................................................................................................................................................. 218

Storing Last and Bad PDUs.................................................................................................................................... 219

Capturing PDUs.......................................................................................................................................................220

PDU Counters...........................................................................................................................................................221

Sample Configurations...................................................................................................................................................221

10 Content Addressable Memory (CAM)...................................................................................................... 228

CAM Allocation.............................................................................................................................................................. 228

Test CAM Usage........................................................................................................................................................... 230

View CAM-ACL Settings..............................................................................................................................................230

View CAM Usage...........................................................................................................................................................232

CAM Optimization......................................................................................................................................................... 232

Troubleshoot CAM Profiling.........................................................................................................................................232

QoS CAM Region Limitation.................................................................................................................................. 232

11 Control Plane Policing (CoPP)..................................................................................................................234

Configure Control Plane Policing.................................................................................................................................235

Configuring CoPP for Protocols............................................................................................................................236

Configuring CoPP for CPU Queues...................................................................................................................... 238

CoPP for OSPFv3 Packets.................................................................................................................................... 239

Configuring CoPP for OSPFv3..............................................................................................................................242

Displaying CoPP Configuration .............................................................................................................................242

8

Contents

12 Data Center Bridging (DCB).....................................................................................................................245

Ethernet Enhancements in Data Center Bridging.....................................................................................................245

Priority-Based Flow Control...................................................................................................................................246

Enhanced Transmission Selection......................................................................................................................... 247

Data Center Bridging Exchange Protocol (DCBx).............................................................................................. 248

Data Center Bridging in a Traffic Flow................................................................................................................. 249

Enabling Data Center Bridging.....................................................................................................................................249

DCB Maps and its Attributes................................................................................................................................. 250

QoS dot1p Traffic Classification and Queue Assignment..........................................................................................251

Data Center Bridging: Default Configuration.............................................................................................................252

Configuring Priority-Based Flow Control....................................................................................................................252

Configuring Lossless Queues................................................................................................................................. 253

Configuring PFC in a DCB Map................................................................................................................................... 254

PFC Configuration Notes....................................................................................................................................... 254

PFC Prerequisites and Restrictions...................................................................................................................... 255

Applying a DCB Map on a Port....................................................................................................................................255

Priority-Based Flow Control Using Dynamic Buffer Method...................................................................................256

Pause and Resume of Traffic.................................................................................................................................256

Buffer Sizes for Lossless or PFC Packets............................................................................................................256

Configuring PFC without a DCB Map.........................................................................................................................257

Configuring Lossless QueuesExample:..................................................................................................................257

Behavior of Tagged Packets........................................................................................................................................259

Configuration Example for DSCP and PFC Priorities............................................................................................... 259

Using PFC to Manage Converged Ethernet Traffic................................................................................................. 260

Configure Enhanced Transmission Selection.............................................................................................................260

ETS Prerequisites and Restrictions.......................................................................................................................260

Creating an ETS Priority Group..............................................................................................................................261

ETS Operation with DCBx......................................................................................................................................262

Configuring Bandwidth Allocation for DCBx CIN................................................................................................ 262

Configuring ETS in a DCB Map..............................................................................................................................263

Hierarchical Scheduling in ETS Output Policies...................................................................................................264

Using ETS to Manage Converged Ethernet Traffic............................................................................................265

Applying DCB Policies in a Switch Stack....................................................................................................................265

Configure a DCBx Operation....................................................................................................................................... 265

DCBx Operation.......................................................................................................................................................266

DCBx Port Roles......................................................................................................................................................266

DCB Configuration Exchange................................................................................................................................ 267

Configuration Source Election............................................................................................................................... 268

Propagation of DCB Information........................................................................................................................... 268

Auto-Detection and Manual Configuration of the DCBx Version..................................................................... 268

DCBx Example......................................................................................................................................................... 269

DCBx Prerequisites and Restrictions.................................................................................................................... 269

Configuring DCBx....................................................................................................................................................270

Verifying the DCB Configuration................................................................................................................................. 273

QoS dot1p Traffic Classification and Queue Assignment.........................................................................................282

Contents

9

Configuring the Dynamic Buffer Method................................................................................................................... 283

Sample DCB Configuration...........................................................................................................................................284

PFC and ETS Configuration Command Examples.............................................................................................. 286

13 Dynamic Host Configuration Protocol (DHCP).........................................................................................287

DHCP Packet Format and Options............................................................................................................................. 287

Assign an IP Address using DHCP...............................................................................................................................289

Implementation Information......................................................................................................................................... 290

Configure the System to be a DHCP Server.............................................................................................................290

Configuring the Server for Automatic Address Allocation..................................................................................291

Specifying a Default Gateway................................................................................................................................292

Configure a Method of Hostname Resolution..................................................................................................... 292

Using DNS for Address Resolution........................................................................................................................292

Using NetBIOS WINS for Address Resolution.....................................................................................................293

Creating Manual Binding Entries........................................................................................................................... 293

Debugging the DHCP Server.................................................................................................................................293

Using DHCP Clear Commands.............................................................................................................................. 294

Configure the System to be a Relay Agent................................................................................................................294

Configure the System to be a DHCP Client...............................................................................................................296

Configuring the DHCP Client System...................................................................................................................296

DHCP Client on a Management Interface............................................................................................................297

DHCP Client Operation with Other Features...................................................................................................... 298

Configure the System for User Port Stacking (Option 230)...................................................................................299

Configure Secure DHCP...............................................................................................................................................299

Option 82..................................................................................................................................................................299

DHCP Snooping.......................................................................................................................................................300

Configuring the DHCP secondary-subnet............................................................................................................303

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

Viewing the Number of SAV Dropped Packets...................................................................................................308

Clearing the Number of SAV Dropped Packets.................................................................................................. 308

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

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

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

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

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

Managing ECMP Group Paths............................................................................................................................... 310

Creating an ECMP Group Bundle........................................................................................................................... 311

Modifying the ECMP Group Threshold..................................................................................................................311

10

Contents

15 FIP Snooping............................................................................................................................................ 313

Fibre Channel over Ethernet.........................................................................................................................................313

Ensure Robustness in a Converged Ethernet Network............................................................................................ 313

FIP Snooping on Ethernet Bridges...............................................................................................................................315

FIP Snooping in a Switch Stack....................................................................................................................................317

Using FIP Snooping........................................................................................................................................................ 317

FIP Snooping Prerequisites..................................................................................................................................... 317

Important Points to Remember..............................................................................................................................317

Enabling the FCoE Transit Feature........................................................................................................................318

Enable FIP Snooping on VLANs..............................................................................................................................319

Configure the FC-MAP Value.................................................................................................................................319

Configure a Port for a Bridge-to-Bridge Link....................................................................................................... 319

Configure a Port for a Bridge-to-FCF Link...........................................................................................................319

Impact on Other Software Features......................................................................................................................319

FIP Snooping Restrictions...................................................................................................................................... 320

Configuring FIP Snooping.......................................................................................................................................320

Displaying FIP Snooping Information........................................................................................................................... 321

FCoE Transit Configuration Example..........................................................................................................................326

16 FIPS Cryptography...................................................................................................................................328

Configuration Tasks.......................................................................................................................................................328

Preparing the System................................................................................................................................................... 328

Enabling FIPS Mode...................................................................................................................................................... 329

Generating Host-Keys.................................................................................................................................................. 329

Monitoring FIPS Mode Status..................................................................................................................................... 329

Disabling FIPS Mode..................................................................................................................................................... 330

17 Force10 Resilient Ring Protocol (FRRP)................................................................................................... 331

Protocol Overview......................................................................................................................................................... 331

Ring Status...............................................................................................................................................................332

Multiple FRRP Rings................................................................................................................................................332

Important FRRP Points...........................................................................................................................................333

Important FRRP Concepts.....................................................................................................................................334

Implementing FRRP.......................................................................................................................................................335

FRRP Configuration...................................................................................................................................................... 335

Creating the FRRP Group...................................................................................................................................... 335

Configuring the Control VLAN...............................................................................................................................336

Configuring and Adding the Member VLANs.......................................................................................................337

Setting the FRRP Timers........................................................................................................................................338

Clearing the FRRP Counters..................................................................................................................................338

Viewing the FRRP Configuration...........................................................................................................................338

Viewing the FRRP Information.............................................................................................................................. 338

Troubleshooting FRRP..................................................................................................................................................339

Configuration Checks..............................................................................................................................................339

Sample Configuration and Topology........................................................................................................................... 339

Contents

11

FRRP Support on VLT.................................................................................................................................................. 340

Example Scenario..................................................................................................................................................... 341

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

18 GARP VLAN Registration Protocol (GVRP)............................................................................................. 343

Important Points to Remember................................................................................................................................... 343

Configure GVRP............................................................................................................................................................ 344

Related Configuration Tasks.................................................................................................................................. 344

Enabling GVRP Globally................................................................................................................................................ 345

Enabling GVRP on a Layer 2 Interface....................................................................................................................... 345

Configure GVRP Registration......................................................................................................................................345

Configure a GARP Timer.............................................................................................................................................. 346

RPM Redundancy..........................................................................................................................................................346

19 High Availability (HA)............................................................................................................................... 348

Component Redundancy..............................................................................................................................................348

Automatic and Manual Stack Unit Failover..........................................................................................................348

Synchronization between Management and Standby Units..............................................................................349

Forcing a Stack Unit Failover.................................................................................................................................349

Specifying an Auto-Failover Limit..........................................................................................................................350

Disabling Auto-Reboot............................................................................................................................................350

Manually Synchronizing Management and Standby Units.................................................................................350

Pre-Configuring a Stack Unit Slot...............................................................................................................................350

Removing a Provisioned Logical Stack Unit............................................................................................................... 351

Hitless Behavior..............................................................................................................................................................351

Graceful Restart.............................................................................................................................................................351

Software Resiliency.......................................................................................................................................................352

Software Component Health Monitoring.............................................................................................................352

System Health Monitoring......................................................................................................................................352

Failure and Event Logging......................................................................................................................................352

Hot-Lock Behavior........................................................................................................................................................ 353

20 Internet Group Management Protocol (IGMP)........................................................................................ 354

IGMP Implementation Information.............................................................................................................................. 354

IGMP Protocol Overview............................................................................................................................................. 354

IGMP Version 2........................................................................................................................................................354

IGMP Version 3........................................................................................................................................................356

Configure IGMP.............................................................................................................................................................359

Related Configuration Tasks..................................................................................................................................359

Viewing IGMP Enabled Interfaces...............................................................................................................................360

Selecting an IGMP Version...........................................................................................................................................360

Viewing IGMP Groups...................................................................................................................................................360

Adjusting Timers.............................................................................................................................................................361

Adjusting Query and Response Timers..................................................................................................................361

Preventing a Host from Joining a Group....................................................................................................................362

Enabling IGMP Immediate-Leave................................................................................................................................365

12

Contents

IGMP Snooping..............................................................................................................................................................365

IGMP Snooping Implementation Information.......................................................................................................365

Configuring IGMP Snooping.................................................................................................................................. 365

Removing a Group-Port Association.....................................................................................................................366

Disabling Multicast Flooding...................................................................................................................................366

Specifying a Port as Connected to a Multicast Router...................................................................................... 367

Configuring the Switch as Querier........................................................................................................................ 367

Fast Convergence after MSTP Topology Changes..................................................................................................368

Egress Interface Selection (EIS) for HTTP and IGMP Applications....................................................................... 368

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

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

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

Handling of Switch-Initiated Traffic.......................................................................................................................371

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

21 Interfaces................................................................................................................................................. 377

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

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

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

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

Resetting an Interface to its Factory Default State..................................................................................................380

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

Physical Interfaces......................................................................................................................................................... 381

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

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

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

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

Configuring Layer 3 (Network) Mode.................................................................................................................. 382

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

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

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

Configuring EIS........................................................................................................................................................ 384

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

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

Configuring a Management Interface on an Ethernet Port...............................................................................386

VLAN Interfaces.............................................................................................................................................................387

Loopback Interfaces......................................................................................................................................................388

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

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

Port Channel Definition and Standards................................................................................................................ 389

Contents

13

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

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

Interfaces in Port Channels....................................................................................................................................390

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............................................................................................... 392

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

Adding or Removing a Port Channel from a VLAN.............................................................................................393

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

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

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

Changing the Hash Algorithm................................................................................................................................395

Bulk Configuration.........................................................................................................................................................396

Interface Range....................................................................................................................................................... 396

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

Defining Interface Range Macros................................................................................................................................398

Define the Interface Range.................................................................................................................................... 398

Choosing an Interface-Range Macro....................................................................................................................399

Monitoring and Maintaining Interfaces.......................................................................................................................399

Maintenance Using TDR.........................................................................................................................................400

Splitting QSFP Ports to SFP+ Ports...........................................................................................................................400

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port.................................................................................. 401

Important Points to Remember.............................................................................................................................402

Example Scenarios.................................................................................................................................................. 402

Configuring wavelength for 10–Gigabit SFP+ optics............................................................................................... 405

Link Dampening............................................................................................................................................................. 406

Important Points to Remember.............................................................................................................................406

Enabling Link Dampening........................................................................................................................................406

Link Bundle Monitoring................................................................................................................................................. 408

Using Ethernet Pause Frames for Flow Control........................................................................................................408

Enabling Pause Frames...........................................................................................................................................409

Configure the MTU Size on an Interface................................................................................................................... 409

Port-Pipes....................................................................................................................................................................... 410

Auto-Negotiation on Ethernet Interfaces................................................................................................................... 410

Setting the Speed of Ethernet Interfaces............................................................................................................. 411

Set Auto-Negotiation Options................................................................................................................................412

View Advanced Interface Information......................................................................................................................... 413

Configuring the Interface Sampling Size...............................................................................................................413

Configuring the Traffic Sampling Size Globally.................................................................................................... 414

Dynamic Counters..........................................................................................................................................................416

Clearing Interface Counters....................................................................................................................................416

22 Internet Protocol Security (IPSec)...........................................................................................................418

Configuring IPSec ..........................................................................................................................................................418

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Contents

23 IPv4 Routing............................................................................................................................................420

IP Addresses................................................................................................................................................................... 421

Implementation Information.................................................................................................................................... 421

Configuration Tasks for IP Addresses......................................................................................................................... 421

Assigning IP Addresses to an Interface....................................................................................................................... 421

Configuring Static Routes............................................................................................................................................ 422

Configure Static Routes for the Management Interface......................................................................................... 423

IPv4 Path MTU Discovery Overview.......................................................................................................................... 424

Using the Configured Source IP Address in ICMP Messages................................................................................. 424

Configuring the ICMP Source Interface...............................................................................................................424

Configuring the Duration to Establish a TCP Connection........................................................................................425

Enabling Directed Broadcast........................................................................................................................................425

Resolution of Host Names............................................................................................................................................425

Enabling Dynamic Resolution of Host Names............................................................................................................426

Specifying the Local System Domain and a List of Domains...................................................................................426

Configuring DNS with Traceroute...............................................................................................................................427

ARP..................................................................................................................................................................................427

Configuration Tasks for ARP........................................................................................................................................428

Configuring Static ARP Entries....................................................................................................................................428

Enabling Proxy ARP.......................................................................................................................................................428

Clearing ARP Cache......................................................................................................................................................429

ARP Learning via Gratuitous ARP............................................................................................................................... 429

Enabling ARP Learning via Gratuitous ARP............................................................................................................... 429

ARP Learning via ARP Request...................................................................................................................................429

Configuring ARP Retries...............................................................................................................................................430

ICMP................................................................................................................................................................................ 431

Configuration Tasks for ICMP...................................................................................................................................... 431

Enabling ICMP Unreachable Messages.......................................................................................................................431

UDP Helper..................................................................................................................................................................... 431

Configure UDP Helper............................................................................................................................................. 431

Important Points to Remember............................................................................................................................. 432

Enabling UDP Helper.....................................................................................................................................................432

Configurations Using UDP Helper............................................................................................................................... 432

UDP Helper with Broadcast-All Addresses................................................................................................................ 432

UDP Helper with Subnet Broadcast Addresses........................................................................................................ 433

UDP Helper with Configured Broadcast Addresses..................................................................................................434

UDP Helper with No Configured Broadcast Addresses........................................................................................... 434

Troubleshooting UDP Helper....................................................................................................................................... 434

24 IPv6 Routing............................................................................................................................................436

Protocol Overview.........................................................................................................................................................436

Extended Address Space........................................................................................................................................437

Stateless Autoconfiguration................................................................................................................................... 437

IPv6 Headers............................................................................................................................................................437

IPv6 Header Fields...................................................................................................................................................438

Contents

15

Extension Header Fields......................................................................................................................................... 440

Addressing.................................................................................................................................................................441

Implementing IPv6 with Dell Networking OS.............................................................................................................442

ICMPv6...........................................................................................................................................................................443

Path MTU Discovery.....................................................................................................................................................444

IPv6 Neighbor Discovery.............................................................................................................................................. 444

IPv6 Neighbor Discovery of MTU Packets.......................................................................................................... 445

Configuration Task List for IPv6 RDNSS................................................................................................................... 445

Configuring the IPv6 Recursive DNS Server.......................................................................................................445

Debugging IPv6 RDNSS Information Sent to the Host .....................................................................................446

Displaying IPv6 RDNSS Information......................................................................................................................447

Secure Shell (SSH) Over an IPv6 Transport..............................................................................................................447

Configuration Tasks for IPv6....................................................................................................................................... 448

Adjusting Your CAM-Profile................................................................................................................................... 448

Assigning an IPv6 Address to an Interface...........................................................................................................449

Assigning a Static IPv6 Route................................................................................................................................449

Configuring Telnet with IPv6................................................................................................................................. 450

SNMP over IPv6......................................................................................................................................................450

Displaying IPv6 Information....................................................................................................................................450

Displaying an IPv6 Interface Information...............................................................................................................451

Showing IPv6 Routes.............................................................................................................................................. 451

Showing the Running-Configuration for an Interface........................................................................................ 453

Clearing IPv6 Routes...............................................................................................................................................453

Configuring IPv6 RA Guard..........................................................................................................................................453

Configuring IPv6 RA Guard on an Interface........................................................................................................ 455

Monitoring IPv6 RA Guard..................................................................................................................................... 456

25 iSCSI Optimization.................................................................................................................................. 457

iSCSI Optimization Overview.......................................................................................................................................457

Monitoring iSCSI Traffic Flows..............................................................................................................................459

Application of Quality of Service to iSCSI Traffic Flows.................................................................................... 459

Information Monitored in iSCSI Traffic Flows......................................................................................................459

Detection and Auto-Configuration for Dell EqualLogic Arrays.......................................................................... 460

Configuring Detection and Ports for Dell Compellent Arrays............................................................................ 460

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer............................................................... 461

Enable and Disable iSCSI Optimization..................................................................................................................461

Default iSCSI Optimization Values.............................................................................................................................. 462

iSCSI Optimization Prerequisites.................................................................................................................................462

Configuring iSCSI Optimization................................................................................................................................... 462

Displaying iSCSI Optimization Information................................................................................................................. 464

26 Intermediate System to Intermediate System..........................................................................................466

IS-IS Protocol Overview............................................................................................................................................... 466

IS-IS Addressing............................................................................................................................................................ 466

Multi-Topology IS-IS......................................................................................................................................................467

Transition Mode....................................................................................................................................................... 467

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Contents

Interface Support.................................................................................................................................................... 468

Adjacencies...............................................................................................................................................................468

Graceful Restart............................................................................................................................................................ 468

Timers....................................................................................................................................................................... 468

Implementation Information......................................................................................................................................... 468

Configuration Information............................................................................................................................................ 469

Configuration Tasks for IS-IS.................................................................................................................................470

Configuring the Distance of a Route.....................................................................................................................477

Changing the IS-Type............................................................................................................................................. 478

Redistributing IPv4 Routes.....................................................................................................................................480

Redistributing IPv6 Routes..................................................................................................................................... 481

Configuring Authentication Passwords................................................................................................................ 482

Setting the Overload Bit.........................................................................................................................................482

Debugging IS-IS....................................................................................................................................................... 483

IS-IS Metric Styles.........................................................................................................................................................484

Configure Metric Values............................................................................................................................................... 484

Maximum Values in the Routing Table..................................................................................................................485

Change the IS-IS Metric Style in One Level Only............................................................................................... 485

Leaks from One Level to Another......................................................................................................................... 486

Sample Configurations.................................................................................................................................................. 487

27 Link Aggregation Control Protocol (LACP)..............................................................................................490

Introduction to Dynamic LAGs and LACP..................................................................................................................490

Important Points to Remember.............................................................................................................................490

LACP Modes.............................................................................................................................................................491

Configuring LACP Commands................................................................................................................................491

LACP Configuration Tasks........................................................................................................................................... 492

Creating a LAG.........................................................................................................................................................492

Configuring the LAG Interfaces as Dynamic........................................................................................................492

Setting the LACP Long Timeout........................................................................................................................... 493

Monitoring and Debugging LACP..........................................................................................................................493

Shared LAG State Tracking......................................................................................................................................... 494

Configuring Shared LAG State Tracking.............................................................................................................. 494

Important Points about Shared LAG State Tracking..........................................................................................496

LACP Basic Configuration Example............................................................................................................................ 496

Configure a LAG on ALPHA...................................................................................................................................496

28 Layer 2.................................................................................................................................................... 505

Manage the MAC Address Table................................................................................................................................ 505

Clearing the MAC Address Table.......................................................................................................................... 505

Setting the Aging Time for Dynamic Entries....................................................................................................... 505

Configuring a Static MAC Address....................................................................................................................... 506

Displaying the MAC Address Table.......................................................................................................................506

MAC Learning Limit...................................................................................................................................................... 506

Setting the MAC Learning Limit............................................................................................................................ 507

mac learning-limit Dynamic.....................................................................................................................................507

Contents

17

mac learning-limit mac-address-sticky................................................................................................................. 507

mac learning-limit station-move............................................................................................................................ 508

mac learning-limit no-station-move...................................................................................................................... 508

Learning Limit Violation Actions............................................................................................................................ 508

Setting Station Move Violation Actions................................................................................................................509

Recovering from Learning Limit and Station Move Violations.......................................................................... 509

Disabling MAC Address Learning on the System.................................................................................................510

NIC Teaming................................................................................................................................................................... 510

Configure Redundant Pairs............................................................................................................................................511

Important Points about Configuring Redundant Pairs........................................................................................ 513

Far-End Failure Detection............................................................................................................................................. 514

FEFD State Changes............................................................................................................................................... 515

Configuring FEFD.....................................................................................................................................................516

Enabling FEFD on an Interface...............................................................................................................................516

Debugging FEFD.......................................................................................................................................................517

29 Link Layer Discovery Protocol (LLDP)..................................................................................................... 519

802.1AB (LLDP) Overview............................................................................................................................................519

Protocol Data Units..................................................................................................................................................519

Optional TLVs................................................................................................................................................................ 520

Management TLVs..................................................................................................................................................520

TIA-1057 (LLDP-MED) Overview............................................................................................................................... 522

TIA Organizationally Specific TLVs........................................................................................................................522

Configure LLDP............................................................................................................................................................. 526

Related Configuration Tasks..................................................................................................................................526

Important Points to Remember.............................................................................................................................526

LLDP Compatibility..................................................................................................................................................527

CONFIGURATION versus INTERFACE Configurations............................................................................................527

Enabling LLDP................................................................................................................................................................527

Disabling and Undoing LLDP..................................................................................................................................528

Enabling LLDP on Management Ports........................................................................................................................528

Disabling and Undoing LLDP on Management Ports..........................................................................................528

Advertising TLVs........................................................................................................................................................... 528

Viewing the LLDP Configuration.................................................................................................................................530

Viewing Information Advertised by Adjacent LLDP Agents.....................................................................................530

Configuring LLDPDU Intervals......................................................................................................................................531

Configuring Transmit and Receive Mode...................................................................................................................532

Configuring the Time to Live Value.............................................................................................................................532

Debugging LLDP............................................................................................................................................................533

Relevant Management Objects................................................................................................................................... 534

30 Microsoft Network Load Balancing..........................................................................................................539

NLB Unicast Mode Scenario........................................................................................................................................539

NLB Multicast Mode Scenario.....................................................................................................................................539

Limitations of the NLB Feature................................................................................................................................... 540

Microsoft Clustering..................................................................................................................................................... 540

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Contents

Enable and Disable VLAN Flooding ............................................................................................................................ 540

Configuring a Switch for NLB .....................................................................................................................................540

Enabling a Switch for Multicast NLB.....................................................................................................................541

31 Multicast Source Discovery Protocol (MSDP)......................................................................................... 542

Protocol Overview.........................................................................................................................................................542

Anycast RP.....................................................................................................................................................................543

Implementation Information......................................................................................................................................... 544

Configure Multicast Source Discovery Protocol....................................................................................................... 544

Related Configuration Tasks..................................................................................................................................544

Enable MSDP................................................................................................................................................................. 548

Manage the Source-Active Cache..............................................................................................................................549

Viewing the Source-Active Cache........................................................................................................................ 549

Limiting the Source-Active Cache........................................................................................................................ 549

Clearing the Source-Active Cache........................................................................................................................550

Enabling the Rejected Source-Active Cache.......................................................................................................550

Accept Source-Active Messages that Fail the RFP Check.....................................................................................550

Specifying Source-Active Messages.......................................................................................................................... 553

Limiting the Source-Active Messages from a Peer.................................................................................................. 554

Preventing MSDP from Caching a Local Source...................................................................................................... 554

Preventing MSDP from Caching a Remote Source................................................................................................. 555

Preventing MSDP from Advertising a Local Source.................................................................................................555

Logging Changes in Peership States..........................................................................................................................556

Terminating a Peership.................................................................................................................................................556

Clearing Peer Statistics.................................................................................................................................................557

Debugging MSDP.......................................................................................................................................................... 557

MSDP with Anycast RP................................................................................................................................................558

Configuring Anycast RP............................................................................................................................................... 559

Reducing Source-Active Message Flooding........................................................................................................560

Specifying the RP Address Used in SA Messages..............................................................................................560

MSDP Sample Configurations..................................................................................................................................... 562

32 Multiple Spanning Tree Protocol (MSTP)................................................................................................565

Protocol Overview........................................................................................................................................................ 565

Spanning Tree Variations..............................................................................................................................................566

Implementation Information................................................................................................................................... 566

Configure Multiple Spanning Tree Protocol...............................................................................................................566

Related Configuration Tasks.................................................................................................................................. 567

Enable Multiple Spanning Tree Globally......................................................................................................................567

Adding and Removing Interfaces.................................................................................................................................567

Creating Multiple Spanning Tree Instances............................................................................................................... 568

Influencing MSTP Root Selection............................................................................................................................... 569

Interoperate with Non-Dell Bridges............................................................................................................................ 569

Changing the Region Name or Revision.....................................................................................................................570

Modifying Global Parameters.......................................................................................................................................570

Modifying the Interface Parameters............................................................................................................................571

Contents

19

Configuring an EdgePort.............................................................................................................................................. 572

Flush MAC Addresses after a Topology Change.......................................................................................................573

MSTP Sample Configurations......................................................................................................................................573

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

ConfigurationSFTOS Example Running-Configuration.......................................................................................574

Debugging and Verifying MSTP Configurations........................................................................................................ 577

33 Multicast Features...................................................................................................................................579

Enabling IP Multicast.....................................................................................................................................................579

Implementation Information......................................................................................................................................... 579

Multicast Policies...........................................................................................................................................................580

IPv4 Multicast Policies............................................................................................................................................580

Understanding Multicast Traceroute (mtrace)......................................................................................................... 587

Important Points to Remember.............................................................................................................................588

Printing Multicast Traceroute (mtrace) Paths..........................................................................................................588

Supported Error Codes.................................................................................................................................................589

mtrace Scenarios...........................................................................................................................................................590

34 Object Tracking.......................................................................................................................................596

Object Tracking Overview............................................................................................................................................596

Track Layer 2 Interfaces.........................................................................................................................................597

Track Layer 3 Interfaces.........................................................................................................................................597

Track IPv4 and IPv6 Routes.................................................................................................................................. 598

Set Tracking Delays.................................................................................................................................................599

VRRP Object Tracking............................................................................................................................................599

Object Tracking Configuration.....................................................................................................................................599

Tracking a Layer 2 Interface.................................................................................................................................. 599

Tracking a Layer 3 Interface.................................................................................................................................. 600

Track an IPv4/IPv6 Route..................................................................................................................................... 602

Displaying Tracked Objects..........................................................................................................................................605

35 Open Shortest Path First (OSPFv2 and OSPFv3)................................................................................... 607

Protocol Overview.........................................................................................................................................................607

Autonomous System (AS) Areas...........................................................................................................................607

Area Types............................................................................................................................................................... 608

Networks and Neighbors........................................................................................................................................609

Router Types............................................................................................................................................................609

Designated and Backup Designated Routers........................................................................................................ 611

Link-State Advertisements (LSAs).........................................................................................................................611

Router Priority and Cost..........................................................................................................................................612

OSPF with Dell Networking OS....................................................................................................................................613

Graceful Restart....................................................................................................................................................... 614

Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................615

Multi-Process OSPFv2 with VRF.......................................................................................................................... 615

OSPF ACK Packing..................................................................................................................................................615

Setting OSPF Adjacency with Cisco Routers.......................................................................................................615

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Contents

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Dell PowerSwitch S4810P User guide

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