Dell Force10 Z9000 Configuration manual

Dell Configuration Guide for the Z9000
System

9.5(0.1)

Notes, Cautions, and Warnings

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

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you
how to avoid the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

Copyright © 2014 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and

intellectual property laws. Dell™ and the Dell logo are trademarks of Dell Inc. in the United States and/or other
jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.

2014 - 07

Rev. A00

Contents

1 About this Guide..................................................................................................31

Audience.............................................................................................................................................. 31

Conventions.........................................................................................................................................31

Related Documents.............................................................................................................................31

2 Configuration Fundamentals........................................................................... 32

Accessing the Command Line............................................................................................................32

CLI Modes............................................................................................................................................32

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

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

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

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

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

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

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

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

3 Data Center Bridging (DCB)..............................................................................43

SNMP Support for PFC and Buffer Statistics Tracking.......................................................................43

4 Getting Started................................................................................................... 44

Console Access...................................................................................................................................44

Serial Console................................................................................................................................44

Accessing the CLI Interface and Running Scripts Using SSH............................................................45

Z9000 ........................................................................................................................................... 45

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

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

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

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

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

Accessing the Z-Series and Remotely..........................................................................................47

Configure the Management Port IP Address............................................................................... 47

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

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

Configuring the Enable Password......................................................................................................48

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

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

Save the Running-Configuration..................................................................................................50

Configure the Overload Bit for a Startup Scenario...................................................................... 51

Viewing Files...................................................................................................................................51

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

Enabling Software Features on Devices Using a Command Option................................................ 53

View Command History......................................................................................................................54

Upgrading Dell Networking OS.......................................................................................................... 54

Using HTTP for File Transfers............................................................................................................. 55

Using Hashes to Validate Software Images........................................................................................55

5 Management........................................................................................................57

Configuring Privilege Levels................................................................................................................57

Creating a Custom Privilege Level................................................................................................57

Removing a Command from EXEC Mode....................................................................................57

Moving a Command from EXEC Privilege Mode to EXEC Mode................................................ 57

Allowing Access to CONFIGURATION Mode Commands.......................................................... 58

Allowing Access to the Following Modes.................................................................................... 58

Applying a Privilege Level to a Username.................................................................................... 60

Applying a Privilege Level to a Terminal Line...............................................................................60

Configuring Logging...........................................................................................................................60

Audit and Security Logs.................................................................................................................61

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

Setting Up a Secure Connection to a Syslog Server....................................................................63

Log Messages in the Internal Buffer...................................................................................................64

Configuration Task List for System Log Management................................................................ 64

Disabling System Logging.................................................................................................................. 64

Sending System Messages to a Syslog Server....................................................................................65

Configuring a UNIX System as a Syslog Server............................................................................65

Changing System Logging Settings....................................................................................................65

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

Configuring a UNIX Logging Facility Level.........................................................................................67

Synchronizing Log Messages............................................................................................................. 68

Enabling Timestamp on Syslog Messages......................................................................................... 68

File Transfer Services.......................................................................................................................... 69

Configuration Task List for File Transfer Services........................................................................69

Enabling the FTP Server................................................................................................................ 69

Configuring FTP Server Parameters............................................................................................. 70

Configuring FTP Client Parameters..............................................................................................70

Terminal Lines......................................................................................................................................71

Denying and Permitting Access to a Terminal Line......................................................................71

Configuring Login Authentication for Terminal Lines..................................................................72

Setting Time Out of EXEC Privilege Mode..........................................................................................73

Using Telnet to get to Another Network Device................................................................................73

Lock CONFIGURATION Mode............................................................................................................74

Viewing the Configuration Lock Status........................................................................................ 74

Recovering from a Forgotten Password on the Z9000 System........................................................75

Recovering from a Forgotten Enable Password on the Z9000.................................................. 76

Recovering from a Failed Start on the Z9000 System.......................................................................77

Restoring the Factory Default Settings...............................................................................................78

Z9000MXL Switch......................................................................................................................... 78

Important Points to Remember....................................................................................................78

Restoring Factory Default Environment Variables....................................................................... 78

6 802.1X................................................................................................................... 81

The Port-Authentication Process.......................................................................................................82

EAP over RADIUS...........................................................................................................................84

Configuring 802.1X............................................................................................................................. 84

Related Configuration Tasks.........................................................................................................84

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

Enabling 802.1X...................................................................................................................................85

Configuring Request Identity Re-Transmissions............................................................................... 87

Configuring a Quiet Period after a Failed Authentication........................................................... 87

Forcibly Authorizing or Unauthorizing a Port....................................................................................88

Re-Authenticating a Port....................................................................................................................89

Configuring Timeouts.........................................................................................................................90

Configuring Dynamic VLAN Assignment with Port Authentication.................................................. 91

Guest and Authentication-Fail VLANs................................................................................................92

Configuring a Guest VLAN............................................................................................................93

Configuring an Authentication-Fail VLAN....................................................................................93

7 Access Control Lists (ACLs)...............................................................................95

IP Access Control Lists (ACLs)............................................................................................................ 96

CAM Usage....................................................................................................................................96

Implementing ACLs on Dell Networking OS............................................................................... 98

IP Fragment Handling......................................................................................................................... 99

IP Fragments ACL Examples......................................................................................................... 99

Layer 4 ACL Rules Examples.......................................................................................................100

Configure a Standard IP ACL............................................................................................................ 101

Configuring a Standard IP ACL Filter..........................................................................................102

Configure an Extended IP ACL......................................................................................................... 103

Configuring Filters with a Sequence Number............................................................................103

Configuring Filters Without a Sequence Number......................................................................104

Configure Layer 2 and Layer 3 ACLs................................................................................................ 105

Assign an IP ACL to an Interface...................................................................................................... 106

Applying an IP ACL............................................................................................................................106

Counting ACL Hits.......................................................................................................................107

Configure Ingress ACLs.....................................................................................................................107

Configure Egress ACLs..................................................................................................................... 108

Applying Egress Layer 3 ACLs (Control-Plane).......................................................................... 109

IP Prefix Lists......................................................................................................................................109

Implementation Information.......................................................................................................110

Configuration Task List for Prefix Lists........................................................................................110

ACL Resequencing............................................................................................................................ 114

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

Route Maps........................................................................................................................................ 116

Implementation Information.......................................................................................................116

Important Points to Remember........................................................................................................ 116

Configuration Task List for Route Maps......................................................................................117

Configuring Match Routes.......................................................................................................... 119

Configuring Set Conditions.........................................................................................................121

Configure a Route Map for Route Redistribution...................................................................... 122

Configure a Route Map for Route Tagging................................................................................ 122

Continue Clause..........................................................................................................................123

Logging of ACL Processes................................................................................................................ 123

Guidelines for Configuring ACL Logging......................................................................................... 124

Configuring ACL Logging................................................................................................................. 125

Flow-Based Monitoring Support for ACLs....................................................................................... 125

Behavior of Flow-Based Monitoring...........................................................................................126

Enabling Flow-Based Monitoring..................................................................................................... 127

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

Memory (CAM)......................................................................................................129

Optimizing CAM Utilization During the Attachment of ACLs to VLANs......................................... 129

Guidelines for Configuring ACL VLAN groups.................................................................................130

Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters.........................131

Configuring ACL VLAN Groups................................................................................................... 131

Configuring FP Blocks for VLAN Parameters............................................................................. 132

Viewing CAM Usage.......................................................................................................................... 133

Allocating FP Blocks for VLAN Processes.........................................................................................134

9 Bidirectional Forwarding Detection (BFD)...................................................136

How BFD Works................................................................................................................................ 136

BFD Packet Format......................................................................................................................137

BFD Sessions................................................................................................................................139

BFD Three-Way Handshake........................................................................................................139

Session State Changes................................................................................................................140

Important Points to Remember........................................................................................................ 141

Configure BFD................................................................................................................................... 141

Configure BFD for Physical Ports............................................................................................... 142

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

Configure BFD for OSPF..............................................................................................................147

Configure BFD for OSPFv3......................................................................................................... 150

Configure BFD for IS-IS............................................................................................................... 151

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

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

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

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

10 Border Gateway Protocol IPv4 (BGPv4).................................................... 166

Autonomous Systems (AS)................................................................................................................166

Sessions and Peers............................................................................................................................168

Establish a Session.......................................................................................................................169

Route Reflectors................................................................................................................................169

BGP Attributes................................................................................................................................... 170

Best Path Selection Criteria......................................................................................................... 171

Weight.......................................................................................................................................... 173

Local Preference..........................................................................................................................173

Multi-Exit Discriminators (MEDs)................................................................................................ 174

Origin............................................................................................................................................175

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

Next Hop......................................................................................................................................176

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

Implement BGP with Dell Networking OS........................................................................................177

Additional Path (Add-Path) Support............................................................................................177

Advertise IGP Cost as MED for Redistributed Routes.................................................................177

Ignore Router-ID for Some Best-Path Calculations..................................................................178

Four-Byte AS Numbers................................................................................................................178

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

AS Number Migration..................................................................................................................180

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

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

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

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

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

Configuring AS4 Number Representations................................................................................188

Configuring Peer Groups............................................................................................................190

Configuring BGP Fast Fall-Over..................................................................................................192

Configuring Passive Peering....................................................................................................... 194

Maintaining Existing AS Numbers During an AS Migration........................................................195

Allowing an AS Number to Appear in its Own AS Path..............................................................196

Enabling Graceful Restart............................................................................................................197

Enabling Neighbor Graceful Restart...........................................................................................198

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

Regular Expressions as Filters.................................................................................................... 200

Redistributing Routes..................................................................................................................201

Enabling Additional Paths...........................................................................................................202

Configuring IP Community Lists................................................................................................ 202

Configuring an IP Extended Community List............................................................................ 204

Filtering Routes with Community Lists...................................................................................... 205

Manipulating the COMMUNITY Attribute.................................................................................. 205

Changing MED Attributes........................................................................................................... 207

Changing the LOCAL_PREFERENCE Attribute.......................................................................... 207

Changing the NEXT_HOP Attribute...........................................................................................208

Changing the WEIGHT Attribute................................................................................................209

Enabling Multipath......................................................................................................................209

Filtering BGP Routes...................................................................................................................209

Filtering BGP Routes Using Route Maps.....................................................................................211

Filtering BGP Routes Using AS-PATH Information.................................................................... 212

Configuring BGP Route Reflectors.............................................................................................212

Aggregating Routes.....................................................................................................................213

Configuring BGP Confederations...............................................................................................214

Enabling Route Flap Dampening................................................................................................ 214

Changing BGP Timers................................................................................................................. 217

Enabling BGP Neighbor Soft-Reconfiguration...........................................................................217

Route Map Continue...................................................................................................................219

Enabling MBGP Configurations........................................................................................................ 219

BGP Regular Expression Optimization.............................................................................................220

Debugging BGP................................................................................................................................ 220

Storing Last and Bad PDUs..........................................................................................................221

Capturing PDUs...........................................................................................................................222

PDU Counters............................................................................................................................. 223

Sample Configurations..................................................................................................................... 224

11 Content Addressable Memory (CAM)......................................................... 230

CAM Allocation................................................................................................................................. 230

Test CAM Usage................................................................................................................................232

View CAM Profiles.............................................................................................................................232

View CAM-ACL Settings................................................................................................................... 233

View CAM Usage...............................................................................................................................235

CAM Optimization.............................................................................................................................235

Troubleshoot CAM Profiling.............................................................................................................236

CAM Profile Mismatches.............................................................................................................236

QoS CAM Region Limitation.......................................................................................................236

12 Control Plane Policing (CoPP)..................................................................... 237

Configure Control Plane Policing.................................................................................................... 238

Configuring CoPP for Protocols................................................................................................ 239

Configuring CoPP for CPU Queues........................................................................................... 241

CoPP for OSPFv3 Packets...........................................................................................................242

Configuring CoPP for OSPFv3....................................................................................................245

Show Commands....................................................................................................................... 246

13 Dynamic Host Configuration Protocol (DHCP)........................................248

DHCP Packet Format and Options.................................................................................................. 248

Assign an IP Address using DHCP....................................................................................................250

Implementation Information............................................................................................................ 251

Configure the System to be a DHCP Server.................................................................................... 252

Configuring the Server for Automatic Address Allocation........................................................ 252

Specifying a Default Gateway.....................................................................................................254

Configure a Method of Hostname Resolution.......................................................................... 254

Using DNS for Address Resolution.............................................................................................254

Using NetBIOS WINS for Address Resolution............................................................................ 254

Creating Manual Binding Entries................................................................................................ 255

Debugging the DHCP Server......................................................................................................255

Using DHCP Clear Commands...................................................................................................255

Configure the System to be a Relay Agent......................................................................................256

Configure the System to be a DHCP Client.................................................................................... 258

DHCP Client on a Management Interface................................................................................. 258

DHCP Client Operation with Other Features............................................................................ 259

Configure the System for User Port Stacking (Option 230)........................................................... 260

Configure Secure DHCP.................................................................................................................. 260

Option 82....................................................................................................................................260

DHCP Snooping.......................................................................................................................... 261

Drop DHCP Packets on Snooped VLANs Only..........................................................................263

Dynamic ARP Inspection............................................................................................................ 263

Configuring Dynamic ARP Inspection........................................................................................265

Source Address Validation................................................................................................................266

Enabling IP Source Address Validation...................................................................................... 266

DHCP MAC Source Address Validation......................................................................................266

Enabling IP+MAC Source Address Validation............................................................................ 267

14 Equal Cost Multi-Path (ECMP).....................................................................268

ECMP for Flow-Based Affinity..........................................................................................................268

Configuring the Hash Algorithm................................................................................................ 268

Enabling Deterministic ECMP Next Hop....................................................................................268

Configuring the Hash Algorithm Seed.......................................................................................269

Link Bundle Monitoring.................................................................................................................... 269

Managing ECMP Group Paths.................................................................................................... 270

Creating an ECMP Group Bundle............................................................................................... 271

Modifying the ECMP Group Threshold.......................................................................................271

15 Enabling FIPS Cryptography.........................................................................273

Configuration Tasks.......................................................................................................................... 273

Preparing the System........................................................................................................................273

Enabling FIPS Mode.......................................................................................................................... 274

Generating Host-Keys...................................................................................................................... 274

Monitoring FIPS Mode Status........................................................................................................... 275

Disabling FIPS Mode..........................................................................................................................275

16 Force10 Resilient Ring Protocol (FRRP)..................................................... 277

Protocol Overview............................................................................................................................ 277

Ring Status...................................................................................................................................278

Multiple FRRP Rings.................................................................................................................... 279

Important FRRP Points................................................................................................................279

Important FRRP Concepts.......................................................................................................... 279

Implementing FRRP.......................................................................................................................... 281

FRRP Configuration...........................................................................................................................281

Creating the FRRP Group............................................................................................................281

Configuring the Control VLAN................................................................................................... 282

Configuring and Adding the Member VLANs.............................................................................283

Setting the FRRP Timers............................................................................................................. 284

Clearing the FRRP Counters.......................................................................................................285

Viewing the FRRP Configuration................................................................................................285

Viewing the FRRP Information................................................................................................... 285

Troubleshooting FRRP......................................................................................................................286

Configuration Checks.................................................................................................................286

Sample Configuration and Topology.............................................................................................. 286

17 GARP VLAN Registration Protocol (GVRP)................................................ 288

Important Points to Remember....................................................................................................... 288

Configure GVRP................................................................................................................................289

Related Configuration Tasks...................................................................................................... 289

Enabling GVRP Globally................................................................................................................... 290

Enabling GVRP on a Layer 2 Interface.............................................................................................290

Configure GVRP Registration...........................................................................................................290

Configure a GARP Timer...................................................................................................................291

18 Internet Group Management Protocol (IGMP).........................................293

IGMP Implementation Information..................................................................................................293

IGMP Protocol Overview..................................................................................................................293

IGMP Version 2............................................................................................................................293

IGMP Version 3............................................................................................................................295

Configure IGMP................................................................................................................................ 298

Related Configuration Tasks...................................................................................................... 298

Viewing IGMP Enabled Interfaces....................................................................................................299

Selecting an IGMP Version............................................................................................................... 299

Viewing IGMP Groups...................................................................................................................... 300

Adjusting Timers...............................................................................................................................300

Adjusting Query and Response Timers......................................................................................300

Adjusting the IGMP Querier Timeout Value...............................................................................301

Configuring a Static IGMP Group.....................................................................................................301

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

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

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

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

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

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

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

Configuring the Switch as Querier.............................................................................................304

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

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

Protocol Separation....................................................................................................................306

Enabling and Disabling Management Egress Interface Selection.............................................307

Handling of Management Route Configuration........................................................................308

Handling of Switch-Initiated Traffic...........................................................................................308

Handling of Switch-Destined Traffic......................................................................................... 309

Handling of Transit Traffic (Traffic Separation).......................................................................... 310

Mapping of Management Applications and Traffic Type...........................................................310

Behavior of Various Applications for Switch-Initiated Traffic ................................................... 311

Behavior of Various Applications for Switch-Destined Traffic ................................................. 312

Interworking of EIS With Various Applications...........................................................................313

Designating a Multicast Router Interface.........................................................................................314

19 Interfaces..........................................................................................................315

Basic Interface Configuration........................................................................................................... 315

Advanced Interface Configuration................................................................................................... 315

Interface Types..................................................................................................................................316

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

Enabling a Physical Interface............................................................................................................318

Physical Interfaces.............................................................................................................................318

Configuration Task List for Physical Interfaces.......................................................................... 319

Overview of Layer Modes........................................................................................................... 319

Configuring Layer 2 (Data Link) Mode........................................................................................319

Configuring Layer 2 (Interface) Mode........................................................................................320

Configuring Layer 3 (Network) Mode........................................................................................ 320

Configuring Layer 3 (Interface) Mode.........................................................................................321

Egress Interface Selection (EIS).........................................................................................................321

Important Points to Remember..................................................................................................322

Configuring EIS........................................................................................................................... 322

Management Interfaces....................................................................................................................322

Configuring Management Interfaces......................................................................................... 322

Configuring Management Interfaces on the S-Series...............................................................323

VLAN Interfaces................................................................................................................................ 324

Loopback Interfaces......................................................................................................................... 325

Null Interfaces................................................................................................................................... 325

Port Channel Interfaces....................................................................................................................325

Port Channel Definition and Standards......................................................................................326

Port Channel Benefits.................................................................................................................326

Port Channel Implementation....................................................................................................326

10/100/1000 Mbps Interfaces in Port Channels........................................................................327

Configuration Tasks for Port Channel Interfaces...................................................................... 327

Creating a Port Channel............................................................................................................. 328

Adding a Physical Interface to a Port Channel.......................................................................... 328

Reassigning an Interface to a New Port Channel......................................................................330

Configuring the Minimum Oper Up Links in a Port Channel.....................................................331

......................................................................................................................................................331

Assigning an IP Address to a Port Channel................................................................................ 332

Deleting or Disabling a Port Channel.........................................................................................332

Load Balancing Through Port Channels.................................................................................... 332

Load-Balancing on the S- Series................................................................................................333

Changing the Hash Algorithm.................................................................................................... 333

Bulk Configuration............................................................................................................................335

Interface Range........................................................................................................................... 335

Bulk Configuration Examples..................................................................................................... 335

Defining Interface Range Macros.....................................................................................................337

Define the Interface Range.........................................................................................................337

Choosing an Interface-Range Macro.........................................................................................337

Monitoring and Maintaining Interfaces............................................................................................338

Maintenance Using TDR............................................................................................................. 339

Splitting QSFP Ports to SFP+ Ports.................................................................................................. 339

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port............................................................340

Important Points to Remember..................................................................................................341

Support for LM4 Optics...............................................................................................................341

Example Scenarios......................................................................................................................342

Link Dampening................................................................................................................................346

Important Points to Remember................................................................................................. 346

Enabling Link Dampening...........................................................................................................346

Link Bundle Monitoring.................................................................................................................... 348

Using Ethernet Pause Frames for Flow Control.............................................................................. 348

Threshold Settings...................................................................................................................... 349

Enabling Pause Frames...............................................................................................................349

Configure the MTU Size on an Interface......................................................................................... 350

Port-Pipes..........................................................................................................................................351

Auto-Negotiation on Ethernet Interfaces........................................................................................ 351

Setting the Speed and Duplex Mode of Ethernet Interfaces.....................................................352

Set Auto-Negotiation Options....................................................................................................353

View Advanced Interface Information............................................................................................. 354

Configuring the Interface Sampling Size................................................................................... 355

Dynamic Counters............................................................................................................................356

Clearing Interface Counters....................................................................................................... 356

Enhanced Validation of Interface Ranges........................................................................................ 357

20 Internet Protocol Security (IPSec).............................................................. 358

Configuring IPSec ............................................................................................................................ 359

21 IPv4 Routing....................................................................................................360

IP Addresses......................................................................................................................................360

Implementation Information......................................................................................................360

Configuration Tasks for IP Addresses.............................................................................................. 360

Assigning IP Addresses to an Interface.............................................................................................361

Configuring Static Routes.................................................................................................................362

Configure Static Routes for the Management Interface.................................................................363

IPv4 Path MTU Discovery Overview.................................................................................................364

Using the Configured Source IP Address in ICMP Messages..........................................................365

Configuring the ICMP Source Interface.....................................................................................365

Configuring the Duration to Establish a TCP Connection..............................................................365

Enabling Directed Broadcast............................................................................................................366

Resolution of Host Names............................................................................................................... 366

Enabling Dynamic Resolution of Host Names................................................................................ 366

Specifying the Local System Domain and a List of Domains..........................................................367

Configuring DNS with Traceroute....................................................................................................367

ARP.................................................................................................................................................... 368

Configuration Tasks for ARP............................................................................................................ 369

Configuring Static ARP Entries......................................................................................................... 369

Enabling Proxy ARP...........................................................................................................................369

Clearing ARP Cache..........................................................................................................................370

ARP Learning via Gratuitous ARP..................................................................................................... 370

Enabling ARP Learning via Gratuitous ARP.......................................................................................371

ARP Learning via ARP Request..........................................................................................................371

Configuring ARP Retries....................................................................................................................372

ICMP.................................................................................................................................................. 373

Configuration Tasks for ICMP...........................................................................................................373

Enabling ICMP Unreachable Messages............................................................................................373

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

Configure UDP Helper................................................................................................................ 373

Important Points to Remember..................................................................................................374

Enabling UDP Helper........................................................................................................................ 374

Configuring a Broadcast Address.....................................................................................................374

Configurations Using UDP Helper....................................................................................................375

UDP Helper with Broadcast-All Addresses...................................................................................... 375

UDP Helper with Subnet Broadcast Addresses................................................................................376

UDP Helper with Configured Broadcast Addresses.........................................................................377

UDP Helper with No Configured Broadcast Addresses...................................................................377

Troubleshooting UDP Helper........................................................................................................... 377

22 IPv6 Routing....................................................................................................379

Protocol Overview............................................................................................................................ 379

Extended Address Space.............................................................................................................379

Stateless Autoconfiguration........................................................................................................379

IPv6 Headers............................................................................................................................... 380

IPv6 Header Fields.......................................................................................................................381

Extension Header Fields..............................................................................................................382

Addressing...................................................................................................................................383

Implementing IPv6 with Dell Networking OS..................................................................................385

ICMPv6.............................................................................................................................................. 387

Path MTU Discovery..........................................................................................................................387

IPv6 Neighbor Discovery..................................................................................................................388

IPv6 Neighbor Discovery of MTU Packets.................................................................................389

Configuration Task List for IPv6 RDNSS.......................................................................................... 389

Configuring the IPv6 Recursive DNS Server.............................................................................. 389

Debugging IPv6 RDNSS Information Sent to the Host ............................................................ 390

Displaying IPv6 RDNSS Information........................................................................................... 391

Secure Shell (SSH) Over an IPv6 Transport......................................................................................392

Configuration Tasks for IPv6............................................................................................................ 392

Adjusting Your CAM-Profile........................................................................................................392

Assigning an IPv6 Address to an Interface.................................................................................393

Assigning a Static IPv6 Route..................................................................................................... 393

Configuring Telnet with IPv6......................................................................................................394

SNMP over IPv6...........................................................................................................................394

Showing IPv6 Information.......................................................................................................... 395

Showing an IPv6 Interface..........................................................................................................395

Showing IPv6 Routes..................................................................................................................396

Showing the Running-Configuration for an Interface.............................................................. 397

Clearing IPv6 Routes...................................................................................................................398

23 Intermediate System to Intermediate System.......................................... 399

IS-IS Protocol Overview................................................................................................................... 399

IS-IS Addressing................................................................................................................................399

Multi-Topology IS-IS........................................................................................................................400

Transition Mode.......................................................................................................................... 401

Interface Support........................................................................................................................ 401

Adjacencies..................................................................................................................................401

Graceful Restart................................................................................................................................ 401

Timers..........................................................................................................................................402

Implementation Information............................................................................................................402

Configuration Information............................................................................................................... 403

Configuration Tasks for IS-IS..................................................................................................... 403

Configuring the Distance of a Route..........................................................................................412

Changing the IS-Type................................................................................................................. 412

Redistributing IPv4 Routes..........................................................................................................415

Redistributing IPv6 Routes..........................................................................................................416

Configuring Authentication Passwords......................................................................................417

Setting the Overload Bit.............................................................................................................. 417

Debugging IS-IS.......................................................................................................................... 418

IS-IS Metric Styles..............................................................................................................................419

Configure Metric Values................................................................................................................... 419

Maximum Values in the Routing Table...................................................................................... 420

Change the IS-IS Metric Style in One Level Only......................................................................420

Leaks from One Level to Another.............................................................................................. 422

Sample Configurations..................................................................................................................... 422

24 Link Aggregation Control Protocol (LACP)...............................................425

Introduction to Dynamic LAGs and LACP....................................................................................... 425

Important Points to Remember................................................................................................. 425

LACP Modes................................................................................................................................426

Configuring LACP Commands...................................................................................................426

LACP Configuration Tasks................................................................................................................ 427

Creating a LAG............................................................................................................................ 427

Configuring the LAG Interfaces as Dynamic............................................................................. 428

Setting the LACP Long Timeout.................................................................................................428

Monitoring and Debugging LACP.............................................................................................. 429

Shared LAG State Tracking...............................................................................................................429

Configuring Shared LAG State Tracking.................................................................................... 430

Important Points about Shared LAG State Tracking.................................................................. 431

LACP Basic Configuration Example................................................................................................. 432

Configure a LAG on ALPHA........................................................................................................ 432

Setting Up a Threshold for Utilization of High-Gigabit Port Channels.......................................... 439

Guidelines for Monitoring High-Gigabit Port Channels............................................................441

Enabling the Verification of Member Links Utilization in a High-Gigabit Port Channel................442

Viewing Buffer Utilization and Queue Statistics on High-Gigabit Ethernet Backplane Ports....... 442

25 Layer 2..............................................................................................................444

Manage the MAC Address Table......................................................................................................444

Clearing the MAC Address Table............................................................................................... 444

Setting the Aging Time for Dynamic Entries..............................................................................444

Configuring a Static MAC Address............................................................................................. 445

Displaying the MAC Address Table............................................................................................ 445

MAC Learning Limit.......................................................................................................................... 445

Setting the MAC Learning Limit................................................................................................. 446

mac learning-limit Dynamic.......................................................................................................446

mac learning-limit mac-address-sticky.....................................................................................447

mac learning-limit station-move............................................................................................... 447

mac learning-limit no-station-move.........................................................................................447

Learning Limit Violation Actions................................................................................................ 448

Setting Station Move Violation Actions......................................................................................448

Recovering from Learning Limit and Station Move Violations................................................. 449

NIC Teaming.....................................................................................................................................449

Configure Redundant Pairs.............................................................................................................. 450

Important Points about Configuring Redundant Pairs..............................................................452

Far-End Failure Detection................................................................................................................ 453

FEFD State Changes....................................................................................................................454

Configuring FEFD........................................................................................................................455

Enabling FEFD on an Interface...................................................................................................456

Debugging FEFD......................................................................................................................... 457

26 Link Layer Discovery Protocol (LLDP)........................................................459

802.1AB (LLDP) Overview.................................................................................................................459

Protocol Data Units.....................................................................................................................459

Optional TLVs................................................................................................................................... 460

Management TLVs......................................................................................................................460

TIA-1057 (LLDP-MED) Overview......................................................................................................462

TIA Organizationally Specific TLVs.............................................................................................463

Configure LLDP.................................................................................................................................467

Related Configuration Tasks.......................................................................................................467

Important Points to Remember................................................................................................. 468

LLDP Compatibility..................................................................................................................... 468

CONFIGURATION versus INTERFACE Configurations................................................................... 468

Enabling LLDP...................................................................................................................................469

Disabling and Undoing LLDP......................................................................................................469

Enabling LLDP on Management Ports.............................................................................................469

Disabling and Undoing LLDP on Management Ports................................................................469

Advertising TLVs................................................................................................................................470

Viewing the LLDP Configuration...................................................................................................... 471

Viewing Information Advertised by Adjacent LLDP Agents.............................................................472

Configuring LLDPDU Intervals..........................................................................................................473

Configuring Transmit and Receive Mode........................................................................................ 473

Configuring a Time to Live............................................................................................................... 474

Debugging LLDP............................................................................................................................... 475

Relevant Management Objects........................................................................................................476

27 Microsoft Network Load Balancing............................................................482

NLB Unicast Mode Scenario.............................................................................................................482

NLB Multicast Mode Scenario..........................................................................................................483

Limitations With Enabling NLB on Switches....................................................................................483

Benefits and Working of Microsoft Clustering................................................................................ 483

Enable and Disable VLAN Flooding .................................................................................................484

Configuring a Switch for NLB ......................................................................................................... 484

.....................................................................................................................................................484

28 Multicast Source Discovery Protocol (MSDP).......................................... 485

Protocol Overview............................................................................................................................485

Anycast RP.........................................................................................................................................487

Implementation Information............................................................................................................487

Configure Multicast Source Discovery Protocol............................................................................. 487

Related Configuration Tasks.......................................................................................................487

Enable MSDP..................................................................................................................................... 491

Manage the Source-Active Cache...................................................................................................492

Viewing the Source-Active Cache............................................................................................. 492

Limiting the Source-Active Cache............................................................................................. 493

Clearing the Source-Active Cache.............................................................................................493

Enabling the Rejected Source-Active Cache.............................................................................493

Accept Source-Active Messages that Fail the RFP Check.............................................................. 493

Specifying Source-Active Messages................................................................................................ 497

Limiting the Source-Active Messages from a Peer......................................................................... 498

Preventing MSDP from Caching a Local Source.............................................................................498

Preventing MSDP from Caching a Remote Source.........................................................................499

Preventing MSDP from Advertising a Local Source........................................................................ 500

Logging Changes in Peership States................................................................................................501

Terminating a Peership..................................................................................................................... 501

Clearing Peer Statistics..................................................................................................................... 501

Debugging MSDP..............................................................................................................................502

MSDP with Anycast RP..................................................................................................................... 502

Configuring Anycast RP....................................................................................................................504

Reducing Source-Active Message Flooding..............................................................................504

Specifying the RP Address Used in SA Messages...................................................................... 504

MSDP Sample Configurations.......................................................................................................... 507

29 Multiple Spanning Tree Protocol (MSTP).................................................. 510

Protocol Overview............................................................................................................................ 510

Spanning Tree Variations...................................................................................................................511

Implementation Information.......................................................................................................511

Configure Multiple Spanning Tree Protocol.....................................................................................511

Related Configuration Tasks........................................................................................................511

Enable Multiple Spanning Tree Globally...........................................................................................512

Adding and Removing Interfaces......................................................................................................512

Creating Multiple Spanning Tree Instances......................................................................................512

Influencing MSTP Root Selection.....................................................................................................514

Interoperate with Non-Dell Networking OS Bridges.......................................................................514

Changing the Region Name or Revision.......................................................................................... 515

Modifying Global Parameters........................................................................................................... 515

Modifying the Interface Parameters................................................................................................. 516

Configuring an EdgePort...................................................................................................................517

Flush MAC Addresses after a Topology Change..............................................................................518

MSTP Sample Configurations........................................................................................................... 518

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

ConfigurationSFTOS Example Running-Configuration.............................................................519

Debugging and Verifying MSTP Configurations.............................................................................. 522

30 Multicast Features..........................................................................................525

Enabling IP Multicast.........................................................................................................................525

Multicast with ECMP......................................................................................................................... 525

Implementation Information............................................................................................................526

First Packet Forwarding for Lossless Multicast................................................................................ 527

Multicast Policies...............................................................................................................................527

IPv4 Multicast Policies.................................................................................................................527

31 Open Shortest Path First (OSPFv2 and OSPFv3).......................................535

Protocol Overview............................................................................................................................ 535

Autonomous System (AS) Areas................................................................................................. 535

Area Types...................................................................................................................................536

Networks and Neighbors............................................................................................................ 537

Router Types................................................................................................................................537

Designated and Backup Designated Routers............................................................................ 539

Link-State Advertisements (LSAs)............................................................................................... 539

Router Priority and Cost..............................................................................................................541

OSPF with Dell Networking OS........................................................................................................ 541

Graceful Restart.......................................................................................................................... 542

Fast Convergence (OSPFv2, IPv4 Only)..................................................................................... 543

Multi-Process OSPFv2 (IPv4 only)..............................................................................................543

RFC-2328 Compliant OSPF Flooding........................................................................................ 544

OSPF ACK Packing...................................................................................................................... 545

Setting OSPF Adjacency with Cisco Routers............................................................................. 545

Configuration Information............................................................................................................... 546

Configuration Task List for OSPFv2 (OSPF for IPv4)..................................................................546

Sample Configurations for OSPFv2..................................................................................................561

Basic OSPFv2 Router Topology..................................................................................................561

OSPF Area 0 — Gl 1/1 and 1/2.....................................................................................................561

OSPF Area 0 — Gl 3/1 and 3/2....................................................................................................562

OSPF Area 0 — Gl 2/1 and 2/2....................................................................................................562

Configuration Task List for OSPFv3 (OSPF for IPv6)........................................................................562

Enabling IPv6 Unicast Routing................................................................................................... 563

Assigning IPv6 Addresses on an Interface................................................................................. 563

Assigning Area ID on an Interface.............................................................................................. 563

Assigning OSPFv3 Process ID and Router ID Globally.............................................................. 564

Configuring Stub Areas...............................................................................................................564

Configuring Passive-Interface....................................................................................................565

Redistributing Routes..................................................................................................................565

Configuring a Default Route...................................................................................................... 566

Enabling OSPFv3 Graceful Restart............................................................................................. 566

OSPFv3 Authentication Using IPsec...........................................................................................568

Troubleshooting OSPFv3............................................................................................................576

32 Policy-based Routing (PBR)......................................................................... 578

Overview............................................................................................................................................578

Implementing Policy-based Routing with Dell Networking OS.....................................................580

Configuration Task List for Policy-based Routing.......................................................................... 580

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

Sample Configuration.......................................................................................................................585

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

Redirect-List GOLD.....................................................................................................................586

33 PIM Sparse-Mode (PIM-SM)......................................................................... 588

Implementation Information............................................................................................................588

Protocol Overview............................................................................................................................588

Requesting Multicast Traffic.......................................................................................................588

Refuse Multicast Traffic.............................................................................................................. 589

Send Multicast Traffic................................................................................................................. 589

Configuring PIM-SM.........................................................................................................................590

Related Configuration Tasks...................................................................................................... 590

Enable PIM-SM................................................................................................................................. 590

Configuring S,G Expiry Timers..........................................................................................................591

Configuring a Static Rendezvous Point........................................................................................... 592

Overriding Bootstrap Router Updates........................................................................................593

Configuring a Designated Router.................................................................................................... 593

Creating Multicast Boundaries and Domains.................................................................................. 594

Enabling PIM-SM Graceful Restart...................................................................................................594

34 PIM Source-Specific Mode (PIM-SSM).......................................................595

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

Important Points to Remember..................................................................................................595

Configure PIM-SMM.........................................................................................................................596

Related Configuration Tasks...................................................................................................... 596

Enabling PIM-SSM............................................................................................................................ 596

Use PIM-SSM with IGMP Version 2 Hosts....................................................................................... 596

Configuring PIM-SSM with IGMPv2............................................................................................597

35 Port Monitoring..............................................................................................599

Important Points to Remember....................................................................................................... 599

Port Monitoring................................................................................................................................ 600

Configuring Port Monitoring............................................................................................................ 601

Enabling Flow-Based Monitoring.................................................................................................... 603

Remote Port Mirroring..................................................................................................................... 604

Remote Port Mirroring Example................................................................................................ 604

Configuring Remote Port Mirroring...........................................................................................605

Displaying Remote-Port Mirroring Configurations................................................................... 607

Configuring the Sample Remote Port Mirroring....................................................................... 607

Configuring the Encapsulated Remote Port Mirroring.................................................................... 611

Configuration steps for ERPM ....................................................................................................611

ERPM Behavior on a typical Dell Networking OS ........................................................................... 613

Decapsulation of ERPM packets at the Destination IP/ Analyzer..............................................613

36 Private VLANs (PVLAN).................................................................................. 615

Private VLAN Concepts.....................................................................................................................615

Using the Private VLAN Commands.................................................................................................616

Configuration Task List......................................................................................................................617

Creating PVLAN ports..................................................................................................................617

Creating a Primary VLAN.............................................................................................................618

Creating a Community VLAN..................................................................................................... 619

Creating an Isolated VLAN..........................................................................................................620

Private VLAN Configuration Example...............................................................................................621

Inspecting the Private VLAN Configuration.....................................................................................622

37 Per-VLAN Spanning Tree Plus (PVST+)...................................................... 625

Protocol Overview............................................................................................................................625

Implementation Information............................................................................................................626

Configure Per-VLAN Spanning Tree Plus........................................................................................ 626

Related Configuration Tasks...................................................................................................... 626

Enabling PVST+.................................................................................................................................626

Disabling PVST+................................................................................................................................627

Influencing PVST+ Root Selection................................................................................................... 627

Modifying Global PVST+ Parameters...............................................................................................629

Modifying Interface PVST+ Parameters...........................................................................................630

Configuring an EdgePort.................................................................................................................. 631

PVST+ in Multi-Vendor Networks....................................................................................................632

Enabling PVST+ Extend System ID...................................................................................................632

PVST+ Sample Configurations......................................................................................................... 633

38 Quality of Service (QoS)................................................................................635

Implementation Information............................................................................................................ 637

Port-Based QoS Configurations.......................................................................................................637

Setting dot1p Priorities for Incoming Traffic..............................................................................638

Honoring dot1p Priorities on Ingress Traffic..............................................................................638

Configuring Port-Based Rate Policing.......................................................................................639

Configuring Port-Based Rate Shaping.......................................................................................639

Policy-Based QoS Configurations...................................................................................................640

Classify Traffic............................................................................................................................. 641

Create a QoS Policy....................................................................................................................644

Create Policy Maps..................................................................................................................... 646

Enabling QoS Rate Adjustment........................................................................................................ 652

Enabling Strict-Priority Queueing.................................................................................................... 653

Weighted Random Early Detection..................................................................................................653

Creating WRED Profiles.............................................................................................................. 654

Applying a WRED Profile to Traffic.............................................................................................654

Displaying Default and Configured WRED Profiles................................................................... 655

Displaying WRED Drop Statistics................................................................................................655

Pre-Calculating Available QoS CAM Space..................................................................................... 655

Configuring Weights and ECN for WRED .......................................................................................656

Global Service Pools With WRED and ECN Settings..................................................................657

Configuring WRED and ECN Attributes........................................................................................... 658

Guidelines for Configuring ECN for Classifying and Color-Marking Packets................................660

Sample configuration to mark non-ecn packets as “yellow” with Multiple traffic class......... 660

Classifying Incoming Packets Using ECN and Color-Marking..................................................661

Sample configuration to mark non-ecn packets as “yellow” with single traffic class............. 663

Applying Layer 2 Match Criteria on a Layer 3 Interface..................................................................664

Applying DSCP and VLAN Match Criteria on a Service Queue.......................................................665

39 Routing Information Protocol (RIP)........................................................... 666

Protocol Overview............................................................................................................................666

RIPv1............................................................................................................................................666

RIPv2............................................................................................................................................666

Implementation Information............................................................................................................667

Configuration Information............................................................................................................... 667

Configuration Task List............................................................................................................... 667

RIP Configuration Example.........................................................................................................674

40 Remote Monitoring (RMON)....................................................................... 680

Implementation Information........................................................................................................... 680

Fault Recovery.................................................................................................................................. 680

Setting the rmon Alarm...............................................................................................................681

Configuring an RMON Event......................................................................................................682

Configuring RMON Collection Statistics................................................................................... 682

Configuring the RMON Collection History................................................................................683

41 Rapid Spanning Tree Protocol (RSTP)........................................................684

Protocol Overview............................................................................................................................684

Configuring Rapid Spanning Tree....................................................................................................684

Related Configuration Tasks...................................................................................................... 684

Important Points to Remember....................................................................................................... 685

RSTP and VLT..............................................................................................................................685

Configuring Interfaces for Layer 2 Mode.........................................................................................685

Enabling Rapid Spanning Tree Protocol Globally........................................................................... 686

Adding and Removing Interfaces.....................................................................................................688

Modifying Global Parameters...........................................................................................................689

Enabling SNMP Traps for Root Elections and Topology Changes...........................................690

Modifying Interface Parameters.......................................................................................................690

Enabling SNMP Traps for Root Elections and Topology Changes................................................. 691

Influencing RSTP Root Selection......................................................................................................691

Configuring an EdgePort.................................................................................................................. 691

Configuring Fast Hellos for Link State Detection............................................................................692

42 Software-Defined Networking (SDN)........................................................ 694

43 Security............................................................................................................ 695

AAA Accounting................................................................................................................................695

Configuration Task List for AAA Accounting............................................................................. 695

AAA Authentication...........................................................................................................................697

Configuration Task List for AAA Authentication........................................................................698

AAA Authorization.............................................................................................................................700

Privilege Levels Overview........................................................................................................... 700

Configuration Task List for Privilege Levels................................................................................701

RADIUS.............................................................................................................................................. 706

RADIUS Authentication...............................................................................................................706

Configuration Task List for RADIUS............................................................................................707

TACACS+...........................................................................................................................................710

Configuration Task List for TACACS+........................................................................................ 710

TACACS+ Remote Authentication..............................................................................................712

Command Authorization.............................................................................................................713

Protection from TCP Tiny and Overlapping Fragment Attacks.......................................................713

Enabling SCP and SSH.......................................................................................................................713

Using SCP with SSH to Copy a Software Image.........................................................................714

Removing the RSA Host Keys and Zeroizing Storage ............................................................... 715

Configuring When to Re-generate an SSH Key .........................................................................715

Configuring the SSH Server Key Exchange Algorithm............................................................... 716

Configuring the HMAC Algorithm for the SSH Server................................................................717

Configuring the SSH Server Cipher List...................................................................................... 717

Secure Shell Authentication........................................................................................................718

Troubleshooting SSH...................................................................................................................721

Telnet................................................................................................................................................. 721

VTY Line and Access-Class Configuration....................................................................................... 721

VTY Line Local Authentication and Authorization..................................................................... 722

VTY Line Remote Authentication and Authorization.................................................................722

VTY MAC-SA Filter Support.........................................................................................................723

Role-Based Access Control..............................................................................................................723

Overview of RBAC.......................................................................................................................724

User Roles....................................................................................................................................726

AAA Authentication and Authorization for Roles.......................................................................730

Role Accounting..........................................................................................................................733

Display Information About User Roles....................................................................................... 734

44 Service Provider Bridging.............................................................................736

VLAN Stacking...................................................................................................................................736

Important Points to Remember..................................................................................................737

Configure VLAN Stacking............................................................................................................738

Creating Access and Trunk Ports............................................................................................... 738

Enable VLAN-Stacking for a VLAN..............................................................................................739

Configuring the Protocol Type Value for the Outer VLAN Tag.................................................739

Configuring Dell Networking OS Options for Trunk Ports........................................................739

Debugging VLAN Stacking..........................................................................................................740

VLAN Stacking in Multi-Vendor Networks..................................................................................741

VLAN Stacking Packet Drop Precedence.........................................................................................744

Enabling Drop Eligibility..............................................................................................................744

Honoring the Incoming DEI Value............................................................................................. 745

Marking Egress Packets with a DEI Value...................................................................................746

Dynamic Mode CoS for VLAN Stacking........................................................................................... 746

Mapping C-Tag to S-Tag dot1p Values......................................................................................748

Layer 2 Protocol Tunneling..............................................................................................................748

Implementation Information...................................................................................................... 750

Enabling Layer 2 Protocol Tunneling..........................................................................................751

Specifying a Destination MAC Address for BPDUs.....................................................................751

Setting Rate-Limit BPDUs............................................................................................................751

Debugging Layer 2 Protocol Tunneling..................................................................................... 752

Provider Backbone Bridging............................................................................................................. 752

45 sFlow.................................................................................................................753

Overview............................................................................................................................................753

Implementation Information............................................................................................................ 753

Important Points to Remember..................................................................................................754

Enabling Extended sFlow..................................................................................................................754

Enabling and Disabling sFlow on an Interface.................................................................................755

sFlow Show Commands................................................................................................................... 755

Displaying Show sFlow Global....................................................................................................755

Displaying Show sFlow on an Interface..................................................................................... 756

Displaying Show sFlow on a Stack-unit..................................................................................... 756

Configuring Specify Collectors.........................................................................................................757

Changing the Polling Intervals..........................................................................................................757

Back-Off Mechanism........................................................................................................................ 757

sFlow on LAG ports...........................................................................................................................758

Enabling Extended sFlow..................................................................................................................758

Important Points to Remember..................................................................................................759

46 Simple Network Management Protocol (SNMP)......................................761

Protocol Overview.............................................................................................................................761

Implementation Information............................................................................................................ 761

SNMPv3 Compliance With FIPS........................................................................................................761

Configuration Task List for SNMP.................................................................................................... 763

Related Configuration Tasks.......................................................................................................763

Important Points to Remember....................................................................................................... 763

Set up SNMP......................................................................................................................................763

Creating a Community............................................................................................................... 764

Setting Up User-Based Security (SNMPv3)................................................................................ 764

Reading Managed Object Values..................................................................................................... 765

Writing Managed Object Values.......................................................................................................766

Configuring Contact and Location Information using SNMP.........................................................767

Subscribing to Managed Object Value Updates using SNMP.........................................................768

Enabling a Subset of SNMP Traps.................................................................................................... 769

Copy Configuration Files Using SNMP............................................................................................. 771

Copying a Configuration File...................................................................................................... 773

Copying Configuration Files via SNMP.......................................................................................773

Copying the Startup-Config Files to the Running-Config........................................................ 774

Copying the Startup-Config Files to the Server via FTP............................................................ 774

Copying the Startup-Config Files to the Server via TFTP.......................................................... 775

Copy a Binary File to the Startup-Configuration....................................................................... 775

Additional MIB Objects to View Copy Statistics.........................................................................776

Obtaining a Value for MIB Objects............................................................................................. 776

Manage VLANs using SNMP..............................................................................................................777

Creating a VLAN...........................................................................................................................777

Assigning a VLAN Alias.................................................................................................................777

Displaying the Ports in a VLAN....................................................................................................778

Add Tagged and Untagged Ports to a VLAN..............................................................................778

Managing Overload on Startup........................................................................................................ 779

Enabling and Disabling a Port using SNMP......................................................................................779

Fetch Dynamic MAC Entries using SNMP........................................................................................780

Deriving Interface Indices.................................................................................................................782

Monitor Port-Channels.....................................................................................................................783

Troubleshooting SNMP Operation...................................................................................................784

47 Storm Control................................................................................................. 785

Configure Storm Control..................................................................................................................785

Configuring Storm Control from INTERFACE Mode................................................................. 785

Configuring Storm Control from CONFIGURATION Mode...................................................... 785

48 Spanning Tree Protocol (STP)..................................................................... 786

Protocol Overview............................................................................................................................786

Configure Spanning Tree................................................................................................................. 786

Related Configuration Tasks.......................................................................................................786

Important Points to Remember........................................................................................................787

Configuring Interfaces for Layer 2 Mode.........................................................................................787

Enabling Spanning Tree Protocol Globally......................................................................................788

Adding an Interface to the Spanning Tree Group........................................................................... 790

Modifying Global Parameters........................................................................................................... 791

Modifying Interface STP Parameters................................................................................................792

Enabling PortFast.............................................................................................................................. 792

Prevent Network Disruptions with BPDU Guard....................................................................... 793

Selecting STP Root............................................................................................................................795

STP Root Guard.................................................................................................................................796

Root Guard Scenario...................................................................................................................796

Configuring Root Guard............................................................................................................. 797

Enabling SNMP Traps for Root Elections and Topology Changes................................................. 798

Configuring Spanning Trees as Hitless............................................................................................ 798

STP Loop Guard................................................................................................................................799

Configuring Loop Guard............................................................................................................ 800

Displaying STP Guard Configuration................................................................................................801

49 System Time and Date.................................................................................. 802

Network Time Protocol....................................................................................................................802

Protocol Overview......................................................................................................................803

Configure the Network Time Protocol......................................................................................804

Enabling NTP.............................................................................................................................. 804

Setting the Hardware Clock with the Time Derived from NTP................................................ 804

Configuring NTP Broadcasts......................................................................................................805

Disabling NTP on an Interface................................................................................................... 805

Configuring a Source IP Address for NTP Packets....................................................................805

Configuring NTP Authentication................................................................................................806

Dell Networking OS Time and Date................................................................................................ 809

Configuration Task List ..............................................................................................................809

Setting the Time and Date for the Switch Hardware Clock......................................................809

Setting the Time and Date for the Switch Software Clock.......................................................809

Setting the Timezone..................................................................................................................810

Set Daylight Saving Time............................................................................................................ 810

Setting Daylight Saving Time Once............................................................................................810

Setting Recurring Daylight Saving Time......................................................................................811

50 Tunneling ........................................................................................................813

Configuring a Tunnel........................................................................................................................ 813

Configuring Tunnel Keepalive Settings............................................................................................ 814

Configuring a Tunnel Interface........................................................................................................ 815

Configuring Tunnel allow-remote Decapsulation...........................................................................815

Configuring Tunnel source anylocal Decapsulation.......................................................................816

Guidelines for Configuring Multipoint Receive-Only Tunnels........................................................816

Multipoint Receive-Only Type and IP Unnumbered Interfaces for Tunnels.................................. 817

51 Upgrade Procedures...................................................................................... 818

Get Help with Upgrades................................................................................................................... 818

52 Virtual LANs (VLANs)......................................................................................819

Default VLAN..................................................................................................................................... 819

Port-Based VLANs............................................................................................................................ 820

VLANs and Port Tagging.................................................................................................................. 820

Configuration Task List..................................................................................................................... 821

Creating a Port-Based VLAN.......................................................................................................821

Assigning Interfaces to a VLAN...................................................................................................822

Moving Untagged Interfaces...................................................................................................... 823

Assigning an IP Address to a VLAN.............................................................................................825

Configuring Native VLANs................................................................................................................825

Enabling Null VLAN as the Default VLAN.........................................................................................826

53 Virtual Link Trunking (VLT)...........................................................................827

Overview............................................................................................................................................827

VLT on Core Switches................................................................................................................ 828

Enhanced VLT............................................................................................................................. 828

VLT Terminology.............................................................................................................................. 829

Configure Virtual Link Trunking....................................................................................................... 830

Important Points to Remember................................................................................................. 830

Configuration Notes....................................................................................................................831

Primary and Secondary VLT Peers............................................................................................. 834

RSTP and VLT.............................................................................................................................. 835

VLT Bandwidth Monitoring.........................................................................................................835

VLT and IGMP Snooping.............................................................................................................836

VLT IPv6.......................................................................................................................................836

VLT Port Delayed Restoration.................................................................................................... 836

PIM-Sparse Mode Support on VLT.............................................................................................836

VLT Routing ................................................................................................................................838

Non-VLT ARP Sync.....................................................................................................................840

RSTP Configuration...........................................................................................................................841

Preventing Forwarding Loops in a VLT Domain........................................................................ 841

Sample RSTP Configuration........................................................................................................841

Configuring VLT..........................................................................................................................842

eVLT Configuration Example............................................................................................................853

eVLT Configuration Step Examples............................................................................................854

PIM-Sparse Mode Configuration Example...................................................................................... 856

Verifying a VLT Configuration.......................................................................................................... 857

Additional VLT Sample Configurations............................................................................................860

Configuring Virtual Link Trunking (VLT Peer 1)Configuring Virtual Link Trunking (VLT Peer

2)Verifying a Port-Channel Connection to a VLT Domain (From an Attached Access

Switch)......................................................................................................................................... 861

Troubleshooting VLT........................................................................................................................863

Reconfiguring Stacked Switches as VLT..........................................................................................864

Specifying VLT Nodes in a PVLAN....................................................................................................865

Association of VLTi as a Member of a PVLAN............................................................................866

MAC Synchronization for VLT Nodes in a PVLAN..................................................................... 866

PVLAN Operations When One VLT Peer is Down..................................................................... 866

PVLAN Operations When a VLT Peer is Restarted.....................................................................867

Interoperation of VLT Nodes in a PVLAN with ARP Requests...................................................867

Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN........867

Configuring a VLT VLAN or LAG in a PVLAN................................................................................... 869

Creating a VLT LAG or a VLT VLAN............................................................................................869

Associating the VLT LAG or VLT VLAN in a PVLAN....................................................................870

Proxy ARP Capability on VLT Peer Nodes........................................................................................ 871

Working of Proxy ARP for VLT Peer Nodes................................................................................872

VLT Nodes as Rendezvous Points for Multicast Resiliency.............................................................873

54 VLT Proxy Gateway........................................................................................874

Proxy Gateway in VLT Domains....................................................................................................... 874

LLDP organizational TLV for proxy gateway..............................................................................876

Sample Configuration Scenario for VLT Proxy Gateway...........................................................877

Configuring an LLDP VLT Proxy Gateway....................................................................................... 879

55 Virtual Router Redundancy Protocol (VRRP)........................................... 880

VRRP Overview.................................................................................................................................880

VRRP Benefits....................................................................................................................................881

VRRP Implementation.......................................................................................................................881

VRRP Configuration..........................................................................................................................882

Configuration Task List...............................................................................................................882

Setting VRRP Initialization Delay................................................................................................ 892

Sample Configurations.....................................................................................................................893

VRRP for an IPv4 Configuration................................................................................................. 893

VRRP in a VRF Configuration......................................................................................................898

56 Z-Series Debugging and Diagnostics.........................................................904

Offline Diagnostics........................................................................................................................... 904

Important Points to Remember................................................................................................. 904

Running Offline Diagnostics...................................................................................................... 904

TRACE Logs...................................................................................................................................... 908

Auto Save on Crash or Rollover.................................................................................................908

Last Restart Reason.......................................................................................................................... 909

Line Card Restart Causes and Reasons..................................................................................... 909

Hardware Watchdog Timer..............................................................................................................909

show hardware Commands.............................................................................................................909

Environmental Monitoring................................................................................................................912

......................................................................................................................................................912

Recognize an Over-Temperature Condition.............................................................................912

Troubleshoot an Over-Temperature Condition........................................................................ 912

Recognize an Under-Voltage Condition....................................................................................913

Troubleshoot an Under-Voltage Condition...............................................................................913

Buffer Tuning.....................................................................................................................................914

Buffer Tuning Points....................................................................................................................915

Decide to Tune Buffers............................................................................................................... 915

Using the Buffer Tuning Commands..........................................................................................915

Sample Buffer Profile Configuration.......................................................................................... 918

Troubleshooting Packet Loss........................................................................................................... 918

Displaying Drop Counters...........................................................................................................919

Displaying Dataplane Statistics................................................................................................... 919

Displaying Stack Member Counters........................................................................................... 921

Enabling Application Core Dumps................................................................................................... 921

Mini Core Dumps..............................................................................................................................922

Enabling TCP Dumps........................................................................................................................922

57 Standards Compliance..................................................................................924

IEEE Compliance.............................................................................................................................. 924

RFC and I-D Compliance................................................................................................................. 925

General Internet Protocols......................................................................................................... 925

General IPv4 Protocols...............................................................................................................926

General IPv6 Protocols............................................................................................................... 927

Border Gateway Protocol (BGP).................................................................................................927

Open Shortest Path First (OSPF).................................................................................................928

Intermediate System to Intermediate System (IS-IS).................................................................929

Routing Information Protocol (RIP)........................................................................................... 929

Multicast......................................................................................................................................930

Network Management................................................................................................................930

MIB Location..................................................................................................................................... 937