Dell Networking S3100 Series User guide

Dell Conguration Guide for the S3100 Series

9.11(2.1)

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 - 06

Rev. A00

Contents

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

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

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

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

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

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

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

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

The do Command............................................................................................................................................................ 39

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

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

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

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

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

Example of the grep Keyword................................................................................................................................... 41

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

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 Conguration.......................................................................................................................................................47

Conguring a Host Name................................................................................................................................................47

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

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

Congure the Management Port IP Address......................................................................................................... 48

Congure a Management Route..............................................................................................................................48

Conguring a Username and Password..................................................................................................................48

Conguring the Enable Password..................................................................................................................................49

Conguration File Management.....................................................................................................................................49

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

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

Save the Running-Conguration..............................................................................................................................52

Congure the Overload Bit for a Startup Scenario............................................................................................... 52

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

Compressing Conguration 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

Conguring Privilege Levels........................................................................................................................................... 60

Creating a Custom Privilege Level...........................................................................................................................60

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 Dierent Modes........................................................................................................................ 61

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

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

Conguring Logging........................................................................................................................................................ 63

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

Conguring Logging Format ...................................................................................................................................65

Display the Logging Buer and the Logging Conguration..................................................................................66

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

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

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

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

Conguring Login Activity Tracking......................................................................................................................... 68

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

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

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

Conguring Concurrent Session Limit.....................................................................................................................70

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

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

Log Messages in the Internal Buer..............................................................................................................................72

Conguration Task List for System Log Management.......................................................................................... 72

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

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

Conguring a UNIX System as a Syslog Server.....................................................................................................73

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

Display the Logging Buer and the Logging Conguration........................................................................................ 74

Conguring a UNIX Logging Facility Level.................................................................................................................... 74

Synchronizing Log Messages......................................................................................................................................... 75

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

File Transfer Services.......................................................................................................................................................76

Conguration Task List for File Transfer Services.................................................................................................. 77

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

Conguring FTP Server Parameters........................................................................................................................77

Conguring FTP Client Parameters......................................................................................................................... 78

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

Denying and Permitting Access to a Terminal Line................................................................................................ 78

Conguring Login Authentication for Terminal Lines.............................................................................................79

4

Contents

Setting Timeout for EXEC Privilege Mode...................................................................................................................80

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

Lock CONFIGURATION Mode........................................................................................................................................81

Viewing the Conguration Lock Status................................................................................................................... 81

5 802.1X..........................................................................................................................................................83

Port-Authentication Process..........................................................................................................................................85

EAP over RADIUS......................................................................................................................................................85

Conguring 802.1X...........................................................................................................................................................86

Related Conguration Tasks..................................................................................................................................... 86

Important Points to Remember......................................................................................................................................86

Enabling 802.1X.................................................................................................................................................................87

Conguring dot1x Prole ................................................................................................................................................88

Conguring MAC addresses for a do1x Prole.............................................................................................................89

Conguring the Static MAB and MAB Prole .............................................................................................................89

Conguring Critical VLAN ..............................................................................................................................................90

Conguring Request Identity Re-Transmissions............................................................................................................91

Conguring a Quiet Period after a Failed Authentication...................................................................................... 91

Forcibly Authorizing or Unauthorizing a Port............................................................................................................... 92

Re-Authenticating a Port................................................................................................................................................93

Conguring Timeouts......................................................................................................................................................94

Conguring Dynamic VLAN Assignment with Port Authentication.......................................................................... 95

Guest and Authentication-Fail VLANs.......................................................................................................................... 96

Conguring a Guest VLAN....................................................................................................................................... 96

Conguring an Authentication-Fail VLAN...............................................................................................................96

6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)....................................98

Optimizing CAM Utilization During the Attachment of ACLs to VLANs...................................................................98

Guidelines for Conguring ACL VLAN Groups.............................................................................................................99

Conguring ACL VLAN Groups and Conguring FP Blocks for VLAN Parameters................................................99

Conguring ACL VLAN Groups................................................................................................................................99

Conguring FP Blocks for VLAN Parameters.......................................................................................................100

Viewing CAM Usage....................................................................................................................................................... 101

Allocating FP Blocks for VLAN Processes.................................................................................................................. 102

7 Access Control Lists (ACLs)....................................................................................................................... 104

IP Access Control Lists (ACLs).....................................................................................................................................105

CAM Usage...............................................................................................................................................................106

Implementing ACLs on Dell Networking OS..........................................................................................................106

Important Points to Remember....................................................................................................................................108

Conguration Task List for Route Maps................................................................................................................108

Conguring Match Routes.......................................................................................................................................110

Conguring Set Conditions.......................................................................................................................................111

Congure a Route Map for Route Redistribution..................................................................................................112

Congure a Route Map for Route Tagging............................................................................................................ 113

Continue Clause........................................................................................................................................................ 113

Contents

5

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

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

Layer 4 ACL Rules Examples................................................................................................................................... 114

Congure a Standard IP ACL.........................................................................................................................................115

Conguring a Standard IP ACL Filter......................................................................................................................116

Congure an Extended IP ACL......................................................................................................................................117

Conguring Filters with a Sequence Number........................................................................................................117

Conguring Filters Without a Sequence Number................................................................................................. 118

Congure Layer 2 and Layer 3 ACLs............................................................................................................................ 119

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

Applying an IP ACL.........................................................................................................................................................120

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

Congure Ingress ACLs.................................................................................................................................................. 121

Congure Egress ACLs...................................................................................................................................................121

Applying Egress Layer 3 ACLs (Control-Plane).................................................................................................... 122

IP Prex Lists.................................................................................................................................................................. 123

Implementation Information.................................................................................................................................... 123

Conguration Task List for Prex Lists.................................................................................................................. 123

ACL Resequencing......................................................................................................................................................... 127

Resequencing an ACL or Prex List.......................................................................................................................127

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

Implementation Information.................................................................................................................................... 129

Logging of ACL Processes............................................................................................................................................ 129

Guidelines for Conguring ACL Logging................................................................................................................130

Conguring ACL Logging........................................................................................................................................ 130

Flow-Based Monitoring Support for ACLs...................................................................................................................131

Behavior of Flow-Based Monitoring....................................................................................................................... 131

Enabling Flow-Based Monitoring............................................................................................................................132

8 Bidirectional Forwarding Detection (BFD).................................................................................................. 134

How BFD Works............................................................................................................................................................. 134

BFD Packet Format..................................................................................................................................................135

BFD Sessions............................................................................................................................................................ 136

BFD Three-Way Handshake.................................................................................................................................... 137

Session State Changes............................................................................................................................................139

Important Points to Remember.................................................................................................................................... 139

Congure BFD................................................................................................................................................................ 139

Congure BFD for Physical Ports...........................................................................................................................140

Congure BFD for Static Routes.............................................................................................................................141

Congure BFD for OSPF.........................................................................................................................................144

Congure BFD for OSPFv3.....................................................................................................................................148

Congure BFD for IS-IS............................................................................................................................................151

Congure BFD for BGP...........................................................................................................................................153

Congure BFD for VRRP.........................................................................................................................................160

Conguring Protocol Liveness................................................................................................................................ 163

Troubleshooting BFD................................................................................................................................................163

6

Contents

9 Border Gateway Protocol IPv4 (BGPv4).................................................................................................... 165

Autonomous Systems (AS)...........................................................................................................................................165

Sessions and Peers.........................................................................................................................................................167

Establish a Session................................................................................................................................................... 167

Route Reectors.............................................................................................................................................................168

BGP Attributes................................................................................................................................................................169

Best Path Selection Criteria....................................................................................................................................169

Weight.........................................................................................................................................................................171

Local Preference........................................................................................................................................................171

Multi-Exit Discriminators (MEDs)...........................................................................................................................172

Origin..........................................................................................................................................................................173

AS Path...................................................................................................................................................................... 174

Next Hop....................................................................................................................................................................174

Multiprotocol BGP.......................................................................................................................................................... 174

Implement BGP with Dell Networking OS...................................................................................................................175

Additional Path (Add-Path) Support......................................................................................................................175

Advertise IGP Cost as MED for Redistributed Routes........................................................................................ 175

Ignore Router-ID in Best-Path Calculation............................................................................................................ 176

Four-Byte AS Numbers............................................................................................................................................176

AS4 Number Representation.................................................................................................................................. 176

AS Number Migration...............................................................................................................................................178

BGP4 Management Information Base (MIB)........................................................................................................179

Important Points to Remember.............................................................................................................................. 179

Conguration Information..............................................................................................................................................180

BGP Conguration......................................................................................................................................................... 180

Enabling BGP.............................................................................................................................................................181

Conguring AS4 Number Representations........................................................................................................... 184

Conguring Peer Groups.........................................................................................................................................186

Conguring BGP Fast Fall-Over.............................................................................................................................188

Conguring Passive Peering................................................................................................................................... 190

Maintaining Existing AS Numbers During an AS Migration.................................................................................190

Allowing an AS Number to Appear in its Own AS Path........................................................................................191

Enabling Graceful Restart........................................................................................................................................192

Enabling Neighbor Graceful Restart.......................................................................................................................193

Filtering on an AS-Path Attribute........................................................................................................................... 193

Regular Expressions as Filters.................................................................................................................................195

Redistributing Routes.............................................................................................................................................. 196

Enabling Additional Paths........................................................................................................................................ 197

Conguring IP Community Lists............................................................................................................................. 197

Conguring an IP Extended Community List........................................................................................................198

Filtering Routes with Community Lists..................................................................................................................199

Manipulating the COMMUNITY Attribute............................................................................................................200

Changing MED Attributes....................................................................................................................................... 201

Changing the LOCAL_PREFERENCE Attribute.................................................................................................. 201

Conguring the local System or a Dierent System to be the Next Hop for BGP-Learned Routes............ 202

Contents

7

Changing the WEIGHT Attribute...........................................................................................................................203

Enabling Multipath...................................................................................................................................................203

Filtering BGP Routes...............................................................................................................................................203

Filtering BGP Routes Using Route Maps..............................................................................................................205

Filtering BGP Routes Using AS-PATH Information............................................................................................. 205

Conguring BGP Route Reectors....................................................................................................................... 206

Aggregating Routes................................................................................................................................................. 207

Conguring BGP Confederations...........................................................................................................................207

Enabling Route Flap Dampening............................................................................................................................ 208

Changing BGP Timers............................................................................................................................................. 210

Enabling BGP Neighbor Soft-Reconguration..................................................................................................... 210

Enabling or disabling BGP neighbors...................................................................................................................... 211

Route Map Continue................................................................................................................................................213

Enabling MBGP Congurations.................................................................................................................................... 213

Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor.......................................... 214

BGP Regular Expression Optimization.........................................................................................................................214

Debugging BGP.............................................................................................................................................................. 214

Storing Last and Bad PDUs.....................................................................................................................................215

Capturing PDUs........................................................................................................................................................216

PDU Counters........................................................................................................................................................... 217

Sample Congurations................................................................................................................................................... 217

10 Content Addressable Memory (CAM).......................................................................................................224

CAM Allocation...............................................................................................................................................................224

Test CAM Usage............................................................................................................................................................226

View CAM-ACL Settings.............................................................................................................................................. 226

View CAM Usage...........................................................................................................................................................228

CAM Optimization......................................................................................................................................................... 228

Troubleshoot CAM Proling..........................................................................................................................................228

CAM Prole Mismatches........................................................................................................................................ 228

QoS CAM Region Limitation...................................................................................................................................229

11 Control Plane Policing (CoPP).................................................................................................................. 230

Congure Control Plane Policing.................................................................................................................................. 231

Conguring CoPP for Protocols............................................................................................................................ 232

Conguring CoPP for CPU Queues...................................................................................................................... 234

CoPP for OSPFv3 Packets.....................................................................................................................................235

Conguring CoPP for OSPFv3.............................................................................................................................. 238

Displaying CoPP Conguration ............................................................................................................................. 238

12 Dynamic Host Conguration Protocol (DHCP)..........................................................................................241

DHCP Packet Format and Options.............................................................................................................................. 241

Assign an IP Address using DHCP...............................................................................................................................243

Implementation Information..........................................................................................................................................244

Congure the System to be a DHCP Server..............................................................................................................244

Conguring the Server for Automatic Address Allocation..................................................................................245

8

Contents

Specifying a Default Gateway................................................................................................................................ 246

Congure a Method of Hostname Resolution......................................................................................................246

Using DNS for Address Resolution........................................................................................................................246

Using NetBIOS WINS for Address Resolution......................................................................................................247

Creating Manual Binding Entries............................................................................................................................247

Debugging the DHCP Server................................................................................................................................. 247

Using DHCP Clear Commands...............................................................................................................................248

Congure the System to be a Relay Agent................................................................................................................ 248

Congure the System to be a DHCP Client...............................................................................................................250

Conguring the DHCP Client System...................................................................................................................250

DHCP Client on a Management Interface.............................................................................................................251

DHCP Client Operation with Other Features.......................................................................................................252

Congure the System for User Port Stacking (Option 230)....................................................................................253

Congure Secure DHCP...............................................................................................................................................253

Option 82..................................................................................................................................................................253

DHCP Snooping.......................................................................................................................................................254

Drop DHCP Packets on Snooped VLANs Only....................................................................................................257

Dynamic ARP Inspection........................................................................................................................................ 258

Conguring Dynamic ARP Inspection................................................................................................................... 259

Source Address Validation............................................................................................................................................ 260

Enabling IP Source Address Validation..................................................................................................................260

DHCP MAC Source Address Validation................................................................................................................. 261

Enabling IP+MAC Source Address Validation....................................................................................................... 261

Viewing the Number of SAV Dropped Packets....................................................................................................262

Clearing the Number of SAV Dropped Packets................................................................................................... 262

13 Equal Cost Multi-Path (ECMP)................................................................................................................ 263

ECMP for Flow-Based Anity.....................................................................................................................................263

Conguring the Hash Algorithm............................................................................................................................ 263

Enabling Deterministic ECMP Next Hop.............................................................................................................. 263

Conguring the Hash Algorithm Seed.................................................................................................................. 264

Link Bundle Monitoring................................................................................................................................................. 264

Managing ECMP Group Paths...............................................................................................................................265

Creating an ECMP Group Bundle..........................................................................................................................265

Modifying the ECMP Group Threshold................................................................................................................ 265

14 FIPS Cryptography................................................................................................................................... 267

Conguration Tasks....................................................................................................................................................... 267

Preparing the System....................................................................................................................................................267

Enabling FIPS Mode...................................................................................................................................................... 268

Generating Host-Keys...................................................................................................................................................268

Monitoring FIPS Mode Status......................................................................................................................................268

Disabling FIPS Mode..................................................................................................................................................... 269

15 Force10 Resilient Ring Protocol (FRRP)................................................................................................... 270

Protocol Overview......................................................................................................................................................... 270

Contents

9

Ring Status................................................................................................................................................................ 271

Multiple FRRP Rings................................................................................................................................................ 271

Important FRRP Points........................................................................................................................................... 272

Important FRRP Concepts..................................................................................................................................... 273

Implementing FRRP....................................................................................................................................................... 274

FRRP Conguration.......................................................................................................................................................274

Creating the FRRP Group....................................................................................................................................... 274

Conguring the Control VLAN............................................................................................................................... 275

Conguring and Adding the Member VLANs.......................................................................................................276

Setting the FRRP Timers........................................................................................................................................ 277

Clearing the FRRP Counters.................................................................................................................................. 277

Viewing the FRRP Conguration........................................................................................................................... 277

Viewing the FRRP Information...............................................................................................................................277

Troubleshooting FRRP...................................................................................................................................................278

Conguration Checks.............................................................................................................................................. 278

Sample Conguration and Topology............................................................................................................................ 278

16 GARP VLAN Registration Protocol (GVRP)..............................................................................................280

Important Points to Remember................................................................................................................................... 280

Congure GVRP............................................................................................................................................................. 281

Related Conguration Tasks....................................................................................................................................281

Enabling GVRP Globally................................................................................................................................................ 282

Enabling GVRP on a Layer 2 Interface........................................................................................................................282

Congure GVRP Registration.......................................................................................................................................282

Congure a GARP Timer.............................................................................................................................................. 283

RPM Redundancy..........................................................................................................................................................283

17 High Availability (HA)............................................................................................................................... 285

Component Redundancy.............................................................................................................................................. 285

Automatic and Manual Stack Unit Failover.......................................................................................................... 285

Synchronization between Management and Standby Units..............................................................................286

Forcing a Stack Unit Failover................................................................................................................................. 286

Disabling Auto-Reboot.............................................................................................................................................287

Manually Synchronizing Management and Standby Units..................................................................................287

Pre-Conguring a Stack Unit Slot................................................................................................................................287

Removing a Provisioned Logical Stack Unit............................................................................................................... 288

Hitless Behavior............................................................................................................................................................. 288

Graceful Restart.............................................................................................................................................................288

Software Resiliency....................................................................................................................................................... 289

Software Component Health Monitoring............................................................................................................. 289

System Health Monitoring......................................................................................................................................289

Failure and Event Logging.......................................................................................................................................289

Hot-Lock Behavior.........................................................................................................................................................290

18 Internet Group Management Protocol (IGMP)..........................................................................................291

IGMP Implementation Information............................................................................................................................... 291

10

Contents

IGMP Protocol Overview...............................................................................................................................................291

IGMP Version 2.........................................................................................................................................................291

IGMP Version 3........................................................................................................................................................ 293

Congure IGMP............................................................................................................................................................. 296

Related Conguration Tasks...................................................................................................................................296

Viewing IGMP Enabled Interfaces............................................................................................................................... 297

Selecting an IGMP Version........................................................................................................................................... 297

Viewing IGMP Groups................................................................................................................................................... 297

Adjusting Timers............................................................................................................................................................ 298

Adjusting Query and Response Timers................................................................................................................. 298

Preventing a Host from Joining a Group.................................................................................................................... 299

Enabling IGMP Immediate-Leave.................................................................................................................................302

IGMP Snooping..............................................................................................................................................................302

IGMP Snooping Implementation Information....................................................................................................... 302

Conguring IGMP Snooping...................................................................................................................................302

Removing a Group-Port Association.....................................................................................................................303

Disabling Multicast Flooding...................................................................................................................................303

Specifying a Port as Connected to a Multicast Router...................................................................................... 304

Conguring the Switch as Querier........................................................................................................................ 304

Fast Convergence after MSTP Topology Changes...................................................................................................305

Egress Interface Selection (EIS) for HTTP and IGMP Applications........................................................................305

Protocol Separation.................................................................................................................................................305

Enabling and Disabling Management Egress Interface Selection......................................................................306

Handling of Management Route Conguration................................................................................................... 307

Handling of Switch-Initiated Trac.......................................................................................................................308

Handling of Switch-Destined Trac......................................................................................................................308

Handling of Transit Trac (Trac Separation).................................................................................................... 309

Mapping of Management Applications and Trac Type.....................................................................................309

Behavior of Various Applications for Switch-Initiated Trac .............................................................................310

Behavior of Various Applications for Switch-Destined Trac ............................................................................ 311

Interworking of EIS With Various Applications......................................................................................................312

Designating a Multicast Router Interface....................................................................................................................312

19 Interfaces..................................................................................................................................................314

Basic Interface Conguration........................................................................................................................................314

Advanced Interface Conguration................................................................................................................................314

Interface Types............................................................................................................................................................... 315

Optional Modules............................................................................................................................................................315

View Basic Interface Information..................................................................................................................................316

Resetting an Interface to its Factory Default State....................................................................................................317

Enabling Energy Ecient Ethernet.............................................................................................................................. 318

View EEE Information.................................................................................................................................................... 318

Clear EEE Counters.......................................................................................................................................................322

Enabling a Physical Interface........................................................................................................................................323

Physical Interfaces.........................................................................................................................................................323

Conguration Task List for Physical Interfaces.................................................................................................... 324

Contents

11

Overview of Layer Modes.......................................................................................................................................324

Conguring Layer 2 (Data Link) Mode..................................................................................................................324

Conguring Layer 2 (Interface) Mode.................................................................................................................. 325

Conguring Layer 3 (Network) Mode...................................................................................................................325

Conguring Layer 3 (Interface) Mode.................................................................................................................. 326

Egress Interface Selection (EIS)..................................................................................................................................326

Important Points to Remember............................................................................................................................. 326

Conguring EIS.........................................................................................................................................................327

Management Interfaces................................................................................................................................................327

Conguring Management Interfaces.....................................................................................................................327

Conguring a Management Interface on an Ethernet Port................................................................................329

VLAN Interfaces............................................................................................................................................................ 329

Loopback Interfaces......................................................................................................................................................330

Null Interfaces................................................................................................................................................................ 330

Port Channel Interfaces................................................................................................................................................330

Port Channel Denition and Standards..................................................................................................................331

Port Channel Benets..............................................................................................................................................331

Port Channel Implementation................................................................................................................................. 331

Interfaces in Port Channels.................................................................................................................................... 332

Conguration Tasks for Port Channel Interfaces.................................................................................................332

Creating a Port Channel..........................................................................................................................................332

Adding a Physical Interface to a Port Channel.....................................................................................................333

Reassigning an Interface to a New Port Channel................................................................................................334

Conguring the Minimum Oper Up Links in a Port Channel.............................................................................. 335

Adding or Removing a Port Channel from a VLAN............................................................................................. 335

Assigning an IP Address to a Port Channel.......................................................................................................... 336

Deleting or Disabling a Port Channel..................................................................................................................... 337

Load Balancing Through Port Channels................................................................................................................337

Load-Balancing Method..........................................................................................................................................337

Changing the Hash Algorithm................................................................................................................................338

Bulk Conguration......................................................................................................................................................... 339

Interface Range........................................................................................................................................................339

Bulk Conguration Examples..................................................................................................................................339

Dening Interface Range Macros................................................................................................................................. 341

Dene the Interface Range..................................................................................................................................... 341

Choosing an Interface-Range Macro.....................................................................................................................341

Monitoring and Maintaining Interfaces........................................................................................................................342

Maintenance Using TDR......................................................................................................................................... 343

Link Dampening..............................................................................................................................................................343

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

Enabling Link Dampening........................................................................................................................................344

Link Bundle Monitoring................................................................................................................................................. 345

Using Ethernet Pause Frames for Flow Control........................................................................................................ 346

Enabling Pause Frames........................................................................................................................................... 346

Congure the MTU Size on an Interface.................................................................................................................... 347

12

Contents

Port-Pipes.......................................................................................................................................................................348

Auto-Negotiation on Ethernet Interfaces................................................................................................................... 348

Setting the Speed of Ethernet Interfaces............................................................................................................ 348

Set Auto-Negotiation Options............................................................................................................................... 350

Provisioning Combo Ports.............................................................................................................................................351

View Advanced Interface Information..........................................................................................................................351

Conguring the Interface Sampling Size.............................................................................................................. 352

Conguring the Trac Sampling Size Globally...........................................................................................................353

Dynamic Counters......................................................................................................................................................... 354

Clearing Interface Counters................................................................................................................................... 355

20 Internet Protocol Security (IPSec).......................................................................................................... 356

Conguring IPSec .........................................................................................................................................................356

21 IPv4 Routing............................................................................................................................................ 358

IP Addresses...................................................................................................................................................................359

Implementation Information....................................................................................................................................359

Conguration Tasks for IP Addresses......................................................................................................................... 359

Assigning IP Addresses to an Interface.......................................................................................................................359

Conguring Static Routes............................................................................................................................................ 360

Congure Static Routes for the Management Interface...........................................................................................361

IPv4 Path MTU Discovery Overview.......................................................................................................................... 362

Using the Congured Source IP Address in ICMP Messages..................................................................................362

Conguring the ICMP Source Interface............................................................................................................... 362

Conguring the Duration to Establish a TCP Connection........................................................................................ 363

Enabling Directed Broadcast........................................................................................................................................ 363

Resolution of Host Names............................................................................................................................................363

Enabling Dynamic Resolution of Host Names............................................................................................................364

Specifying the Local System Domain and a List of Domains................................................................................... 364

Conguring DNS with Traceroute............................................................................................................................... 365

ARP................................................................................................................................................................................. 365

Conguration Tasks for ARP........................................................................................................................................ 366

Conguring Static ARP Entries....................................................................................................................................366

Enabling Proxy ARP.......................................................................................................................................................366

Clearing ARP Cache...................................................................................................................................................... 367

ARP Learning via Gratuitous ARP................................................................................................................................367

Enabling ARP Learning via Gratuitous ARP................................................................................................................367

ARP Learning via ARP Request................................................................................................................................... 367

Conguring ARP Retries...............................................................................................................................................368

ICMP............................................................................................................................................................................... 369

Conguration Tasks for ICMP......................................................................................................................................369

Enabling ICMP Unreachable Messages...................................................................................................................... 369

UDP Helper.....................................................................................................................................................................369

Congure UDP Helper............................................................................................................................................ 369

Important Points to Remember..............................................................................................................................370

Enabling UDP Helper..................................................................................................................................................... 370

Contents

13

Conguring a Broadcast Address................................................................................................................................ 370

Congurations Using UDP Helper................................................................................................................................ 371

UDP Helper with Broadcast-All Addresses..................................................................................................................371

UDP Helper with Subnet Broadcast Addresses.........................................................................................................372

UDP Helper with Congured Broadcast Addresses.................................................................................................. 372

UDP Helper with No Congured Broadcast Addresses............................................................................................ 373

Troubleshooting UDP Helper........................................................................................................................................ 373

22 IPv6 Routing............................................................................................................................................ 374

Protocol Overview......................................................................................................................................................... 374

Extended Address Space........................................................................................................................................375

Stateless Autoconguration....................................................................................................................................375

IPv6 Headers............................................................................................................................................................375

IPv6 Header Fields...................................................................................................................................................376

Extension Header Fields..........................................................................................................................................378

Addressing................................................................................................................................................................ 379

Implementing IPv6 with Dell Networking OS.............................................................................................................380

ICMPv6............................................................................................................................................................................381

Path MTU Discovery..................................................................................................................................................... 382

IPv6 Neighbor Discovery.............................................................................................................................................. 382

IPv6 Neighbor Discovery of MTU Packets...........................................................................................................383

Conguration Task List for IPv6 RDNSS.................................................................................................................... 383

Conguring the IPv6 Recursive DNS Server....................................................................................................... 383

Debugging IPv6 RDNSS Information Sent to the Host ..................................................................................... 384

Displaying IPv6 RDNSS Information......................................................................................................................385

Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 385

Conguration Tasks for IPv6........................................................................................................................................ 386

Adjusting Your CAM-Prole....................................................................................................................................386

Assigning an IPv6 Address to an Interface........................................................................................................... 387

Assigning a Static IPv6 Route................................................................................................................................ 387

Conguring Telnet with IPv6..................................................................................................................................388

SNMP over IPv6......................................................................................................................................................388

Displaying IPv6 Information....................................................................................................................................388

Displaying an IPv6 Interface Information.............................................................................................................. 389

Showing IPv6 Routes..............................................................................................................................................389

Showing the Running-Conguration for an Interface..........................................................................................391

Clearing IPv6 Routes................................................................................................................................................391

Disabling ND Entry Timeout....................................................................................................................................391

Conguring IPv6 RA Guard.......................................................................................................................................... 392

Conguring IPv6 RA Guard on an Interface.........................................................................................................393

Monitoring IPv6 RA Guard......................................................................................................................................394

23 iSCSI Optimization.................................................................................................................................. 395

iSCSI Optimization Overview.......................................................................................................................................395

Monitoring iSCSI Trac Flows............................................................................................................................... 397

Application of Quality of Service to iSCSI Trac Flows......................................................................................397

14

Contents

Information Monitored in iSCSI Trac Flows....................................................................................................... 397

Detection and Auto-Conguration for Dell EqualLogic Arrays........................................................................... 398

Conguring Detection and Ports for Dell Compellent Arrays.............................................................................398

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer.................................................................399

Enable and Disable iSCSI Optimization.................................................................................................................399

Default iSCSI Optimization Values...............................................................................................................................400

iSCSI Optimization Prerequisites................................................................................................................................. 400

Conguring iSCSI Optimization................................................................................................................................... 400

Displaying iSCSI Optimization Information..................................................................................................................402

24 Intermediate System to Intermediate System.......................................................................................... 404

IS-IS Protocol Overview............................................................................................................................................... 404

IS-IS Addressing.............................................................................................................................................................404

Multi-Topology IS-IS...................................................................................................................................................... 405

Transition Mode....................................................................................................................................................... 405

Interface Support.................................................................................................................................................... 406

Adjacencies...............................................................................................................................................................406

Graceful Restart............................................................................................................................................................ 406

Timers....................................................................................................................................................................... 406

Implementation Information......................................................................................................................................... 406

Conguration Information.............................................................................................................................................407

Conguration Tasks for IS-IS..................................................................................................................................408

Conguring the Distance of a Route......................................................................................................................415

Changing the IS-Type...............................................................................................................................................416

Redistributing IPv4 Routes......................................................................................................................................418

Redistributing IPv6 Routes......................................................................................................................................419

Conguring Authentication Passwords.................................................................................................................420

Setting the Overload Bit......................................................................................................................................... 420

Debugging IS-IS........................................................................................................................................................421

IS-IS Metric Styles.........................................................................................................................................................422

Congure Metric Values................................................................................................................................................422

Maximum Values in the Routing Table...................................................................................................................422

Change the IS-IS Metric Style in One Level Only................................................................................................422

Leaks from One Level to Another.......................................................................................................................... 424

Sample Congurations.................................................................................................................................................. 425

25 Link Aggregation Control Protocol (LACP)...............................................................................................427

Introduction to Dynamic LAGs and LACP...................................................................................................................427

Important Points to Remember..............................................................................................................................427

LACP Modes............................................................................................................................................................ 428

Conguring LACP Commands............................................................................................................................... 428

LACP Conguration Tasks............................................................................................................................................ 429

Creating a LAG.........................................................................................................................................................429

Conguring the LAG Interfaces as Dynamic........................................................................................................ 429

Setting the LACP Long Timeout............................................................................................................................430

Monitoring and Debugging LACP..........................................................................................................................430

Contents

15

Shared LAG State Tracking........................................................................................................................................... 431

Conguring Shared LAG State Tracking................................................................................................................431

Important Points about Shared LAG State Tracking........................................................................................... 433

LACP Basic Conguration Example.............................................................................................................................433

Congure a LAG on ALPHA................................................................................................................................... 433

26 Layer 2.....................................................................................................................................................442

Manage the MAC Address Table................................................................................................................................. 442

Clearing the MAC Address Table........................................................................................................................... 442

Setting the Aging Time for Dynamic Entries........................................................................................................442

Conguring a Static MAC Address........................................................................................................................443

Displaying the MAC Address Table........................................................................................................................ 443

MAC Learning Limit....................................................................................................................................................... 443

Setting the MAC Learning Limit.............................................................................................................................444

mac learning-limit Dynamic.....................................................................................................................................444

mac learning-limit mac-address-sticky................................................................................................................. 444

mac learning-limit station-move............................................................................................................................ 445

mac learning-limit no-station-move...................................................................................................................... 445

Learning Limit Violation Actions.............................................................................................................................445

Setting Station Move Violation Actions................................................................................................................ 446

Recovering from Learning Limit and Station Move Violations........................................................................... 446

Disabling MAC Address Learning on the System.................................................................................................447

NIC Teaming................................................................................................................................................................... 447

Congure Redundant Pairs...........................................................................................................................................448

Important Points about Conguring Redundant Pairs........................................................................................ 450

Far-End Failure Detection..............................................................................................................................................451

FEFD State Changes...............................................................................................................................................452

Conguring FEFD.................................................................................................................................................... 453

Enabling FEFD on an Interface...............................................................................................................................453

Debugging FEFD......................................................................................................................................................454

27 Link Layer Discovery Protocol (LLDP)..................................................................................................... 456

802.1AB (LLDP) Overview............................................................................................................................................456

Protocol Data Units................................................................................................................................................. 456

Optional TLVs................................................................................................................................................................. 457

Management TLVs...................................................................................................................................................457

TIA-1057 (LLDP-MED) Overview................................................................................................................................ 459

TIA Organizationally Specic TLVs........................................................................................................................ 459

Congure LLDP..............................................................................................................................................................463

Related Conguration Tasks...................................................................................................................................463

Important Points to Remember............................................................................................................................. 463

LLDP Compatibility..................................................................................................................................................464

CONFIGURATION versus INTERFACE Congurations............................................................................................ 464

Enabling LLDP................................................................................................................................................................464

Disabling and Undoing LLDP..................................................................................................................................465

Enabling LLDP on Management Ports........................................................................................................................465

16

Contents

Disabling and Undoing LLDP on Management Ports..........................................................................................465

Advertising TLVs............................................................................................................................................................ 465

Viewing the LLDP Conguration................................................................................................................................. 466

Viewing Information Advertised by Adjacent LLDP Agents......................................................................................467

Conguring LLDPDU Intervals..................................................................................................................................... 468

Conguring Transmit and Receive Mode....................................................................................................................469

Conguring the Time to Live Value............................................................................................................................. 469

Debugging LLDP............................................................................................................................................................ 470

Relevant Management Objects.................................................................................................................................... 471

28 Microsoft Network Load Balancing.......................................................................................................... 476

NLB Unicast Mode Scenario........................................................................................................................................ 476

NLB Multicast Mode Scenario..................................................................................................................................... 476

Limitations of the NLB Feature.................................................................................................................................... 477

Microsoft Clustering...................................................................................................................................................... 477

Enable and Disable VLAN Flooding .............................................................................................................................477

Conguring a Switch for NLB ..................................................................................................................................... 477

Enabling a Switch for Multicast NLB.....................................................................................................................478

29 Multicast Source Discovery Protocol (MSDP)......................................................................................... 479

Protocol Overview......................................................................................................................................................... 479

Anycast RP.....................................................................................................................................................................480

Implementation Information.......................................................................................................................................... 481

Congure Multicast Source Discovery Protocol.........................................................................................................481

Related Conguration Tasks....................................................................................................................................481

Enable MSDP................................................................................................................................................................. 485

Manage the Source-Active Cache.............................................................................................................................. 486

Viewing the Source-Active Cache.........................................................................................................................486

Limiting the Source-Active Cache.........................................................................................................................486

Clearing the Source-Active Cache........................................................................................................................ 487

Enabling the Rejected Source-Active Cache........................................................................................................487

Accept Source-Active Messages that Fail the RFP Check......................................................................................487

Specifying Source-Active Messages...........................................................................................................................490

Limiting the Source-Active Messages from a Peer....................................................................................................491

Preventing MSDP from Caching a Local Source........................................................................................................491

Preventing MSDP from Caching a Remote Source.................................................................................................. 492

Preventing MSDP from Advertising a Local Source..................................................................................................492

Logging Changes in Peership States...........................................................................................................................493

Terminating a Peership..................................................................................................................................................493

Clearing Peer Statistics.................................................................................................................................................494

Debugging MSDP.......................................................................................................................................................... 494

MSDP with Anycast RP................................................................................................................................................495

Conguring Anycast RP................................................................................................................................................496

Reducing Source-Active Message Flooding.........................................................................................................497

Specifying the RP Address Used in SA Messages...............................................................................................497

MSDP Sample Congurations......................................................................................................................................499

Contents

17

30 Multiple Spanning Tree Protocol (MSTP)................................................................................................ 502

Protocol Overview.........................................................................................................................................................502

Spanning Tree Variations.............................................................................................................................................. 503

Implementation Information................................................................................................................................... 503

Congure Multiple Spanning Tree Protocol................................................................................................................503

Related Conguration Tasks...................................................................................................................................504

Enable Multiple Spanning Tree Globally...................................................................................................................... 504

Adding and Removing Interfaces.................................................................................................................................504

Creating Multiple Spanning Tree Instances................................................................................................................505

Inuencing MSTP Root Selection............................................................................................................................... 506

Interoperate with Non-Dell Bridges.............................................................................................................................506

Changing the Region Name or Revision..................................................................................................................... 507

Modifying Global Parameters....................................................................................................................................... 507

Modifying the Interface Parameters........................................................................................................................... 508

Conguring an EdgePort.............................................................................................................................................. 509

Flush MAC Addresses after a Topology Change........................................................................................................ 510

MSTP Sample Congurations.......................................................................................................................................510

Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-

CongurationSFTOS Example Running-Conguration.........................................................................................511

Debugging and Verifying MSTP Congurations......................................................................................................... 514

31 Multicast Features.................................................................................................................................... 516

Enabling IP Multicast......................................................................................................................................................516

Implementation Information.......................................................................................................................................... 516

Multicast Policies............................................................................................................................................................517

IPv4 Multicast Policies............................................................................................................................................. 517

Understanding Multicast Traceroute (mtrace).....................................................................................................524

Printing Multicast Traceroute (mtrace) Paths..................................................................................................... 525

Supported Error Codes........................................................................................................................................... 526

mtrace Scenarios..................................................................................................................................................... 527

32 Object Tracking........................................................................................................................................533

Object Tracking Overview............................................................................................................................................ 533

Track Layer 2 Interfaces..........................................................................................................................................534

Track Layer 3 Interfaces..........................................................................................................................................534

Track IPv4 and IPv6 Routes...................................................................................................................................535

Set Tracking Delays................................................................................................................................................. 536

VRRP Object Tracking............................................................................................................................................ 536

Object Tracking Conguration..................................................................................................................................... 536

Tracking a Layer 2 Interface................................................................................................................................... 536

Tracking a Layer 3 Interface................................................................................................................................... 537

Track an IPv4/IPv6 Route...................................................................................................................................... 539

Displaying Tracked Objects...........................................................................................................................................542

33 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................544

18

Contents

Protocol Overview.........................................................................................................................................................544

Autonomous System (AS) Areas........................................................................................................................... 544

Area Types................................................................................................................................................................ 545

Networks and Neighbors........................................................................................................................................546

Router Types............................................................................................................................................................ 546

Designated and Backup Designated Routers....................................................................................................... 548

Link-State Advertisements (LSAs)........................................................................................................................548

Router Priority and Cost.........................................................................................................................................549

OSPF with Dell Networking OS...................................................................................................................................550

Graceful Restart....................................................................................................................................................... 551

Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................552

Multi-Process OSPFv2 with VRF..........................................................................................................................552

OSPF ACK Packing................................................................................................................................................. 552

Setting OSPF Adjacency with Cisco Routers...................................................................................................... 552

Conguration Information.............................................................................................................................................553

Conguration Task List for OSPFv2 (OSPF for IPv4)........................................................................................ 553

Conguration Task List for OSPFv3 (OSPF for IPv6)...............................................................................................567

Enabling IPv6 Unicast Routing...............................................................................................................................568

Applying cost for OSPFv3......................................................................................................................................568

Assigning IPv6 Addresses on an Interface........................................................................................................... 569

Assigning Area ID on an Interface..........................................................................................................................569

Assigning OSPFv3 Process ID and Router ID Globally........................................................................................569

Assigning OSPFv3 Process ID and Router ID to a VRF...................................................................................... 570

Conguring Stub Areas........................................................................................................................................... 570

Conguring Passive-Interface.................................................................................................................................571

Redistributing Routes...............................................................................................................................................571

Conguring a Default Route....................................................................................................................................571

Enabling OSPFv3 Graceful Restart....................................................................................................................... 572

OSPFv3 Authentication Using IPsec..................................................................................................................... 574

Troubleshooting OSPFv3........................................................................................................................................580

34 Policy-based Routing (PBR).................................................................................................................... 582

Overview.........................................................................................................................................................................582

Implementing PBR.........................................................................................................................................................583

Conguration Task List for Policy-based Routing......................................................................................................583

PBR Exceptions (Permit)....................................................................................................................................... 583

Create a Redirect List..............................................................................................................................................584

Create a Rule for a Redirect-list.............................................................................................................................584

Apply a Redirect-list to an Interface using a Redirect-group............................................................................. 586

Sample Conguration....................................................................................................................................................588

Create the Redirect-List GOLDAssign Redirect-List GOLD to Interface 2/11View Redirect-List GOLD..... 589

35 PIM Sparse-Mode (PIM-SM).................................................................................................................. 592

Implementation Information..........................................................................................................................................592

Protocol Overview.........................................................................................................................................................592

Requesting Multicast Trac...................................................................................................................................592

Contents

19

Refuse Multicast Trac..........................................................................................................................................593

Send Multicast Trac............................................................................................................................................. 593

Conguring PIM-SM..................................................................................................................................................... 593

Related Conguration Tasks...................................................................................................................................594

Enable PIM-SM..............................................................................................................................................................594

Conguring S,G Expiry Timers..................................................................................................................................... 594

Conguring a Static Rendezvous Point......................................................................................................................595

Overriding Bootstrap Router Updates.................................................................................................................. 595

Conguring a Designated Router................................................................................................................................ 596

Creating Multicast Boundaries and Domains............................................................................................................. 596

36 PIM Source-Specic Mode (PIM-SSM).................................................................................................. 597

Implementation Information..........................................................................................................................................597

Important Points to Remember..............................................................................................................................597

Congure PIM-SSM......................................................................................................................................................598

Related Conguration Tasks...................................................................................................................................598

Enabling PIM-SSM........................................................................................................................................................ 598

Use PIM-SSM with IGMP Version 2 Hosts................................................................................................................598

Conguring PIM-SSM with IGMPv2.................................................................................................................... 599

Electing an RP using the BSR Mechanism.................................................................................................................600

Enabling RP to Server Specic Multicast Groups...............................................................................................600

37 Power over Ethernet (PoE)..................................................................................................................... 602

Conguring PoE or PoE+..............................................................................................................................................602

Enable PoE/PoE+....................................................................................................................................................603

Upgrading the PoE Controller................................................................................................................................ 603

Manage Ports using Power Priority and Power Budget...........................................................................................604

Determine the Power Priority................................................................................................................................ 604

Manage Inline Power...............................................................................................................................................605

Set the Threshold Limit for the PoE Power Budget........................................................................................... 605

Manage Power Priorities........................................................................................................................................ 606

Power Allocation to Ports.......................................................................................................................................606

Power Allocation to Additional Ports..................................................................................................................... 607

Manage Legacy Devices............................................................................................................................................... 607

Suspend Power Delivery on a Port..............................................................................................................................607

Restore Power Delivery on a Port............................................................................................................................... 608

Display the Power Details............................................................................................................................................. 608

38 Port Monitoring....................................................................................................................................... 609

Important Points to Remember................................................................................................................................... 609

Port Monitoring.............................................................................................................................................................. 610

Conguring Port Monitoring......................................................................................................................................... 612

Conguring Monitor Multicast Queue......................................................................................................................... 613

Enabling Flow-Based Monitoring..................................................................................................................................614

Remote Port Mirroring...................................................................................................................................................615

Remote Port Mirroring Example.............................................................................................................................615

20

Contents

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