Dell Z9500 Configuration manual

Dell Networking Configuration Guide for the Z9500 Switch

Version 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.

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. A01

Contents

1 About this Guide................................................................................................. 30

Audience..............................................................................................................................................30

Conventions........................................................................................................................................30

Related Documents............................................................................................................................ 30

2 Configuration Fundamentals............................................................................31

Accessing the Command Line............................................................................................................ 31

CLI Modes............................................................................................................................................ 31

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Accessing the Z9500 Remotely....................................................................................................45

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

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

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

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

Manage Configuration Files................................................................................................................47

File Storage.................................................................................................................................... 47

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

Save the Running-Configuration..................................................................................................49

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

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

Changes in Configuration Files.................................................................................................... 50

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

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

Using Hashes to Validate Software Images........................................................................................ 51

4 Switch Management.......................................................................................... 53

Configuring Privilege Levels................................................................................................................53

Creating a Custom Privilege Level................................................................................................53

Removing a Command from EXEC Mode....................................................................................53

Moving a Command from EXEC Privilege Mode to EXEC Mode................................................ 53

Allowing Access to CONFIGURATION Mode Commands.......................................................... 54

Allowing Access to the Following Modes.................................................................................... 54

Applying a Privilege Level to a Username.................................................................................... 56

Applying a Privilege Level to a Terminal Line...............................................................................56

Configuring Logging...........................................................................................................................56

Audit and Security Logs.................................................................................................................57

Configuring Logging Format ...................................................................................................... 58

Setting Up a Secure Connection to a Syslog Server....................................................................59

Log Messages in the Internal Buffer...................................................................................................60

Configuration Task List for System Log Management................................................................ 60

Disabling System Logging.................................................................................................................. 60

Sending System Messages to a Syslog Server....................................................................................61

Configuring a UNIX System as a Syslog Server............................................................................ 61

Display the Logging Buffer and the Logging Configuration..............................................................61

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

Configuring a UNIX Logging Facility Level.........................................................................................63

Synchronizing Log Messages............................................................................................................. 64

Enabling Timestamp on Syslog Messages......................................................................................... 64

File Transfer Services...........................................................................................................................65

Configuration Task List for File Transfer Services........................................................................65

Enabling the FTP Server................................................................................................................ 65

Configuring FTP Server Parameters............................................................................................. 66

Configuring FTP Client Parameters..............................................................................................66

Terminal Lines..................................................................................................................................... 67

Denying and Permitting Access to a Terminal Line..................................................................... 67

Configuring Login Authentication for Terminal Lines................................................................. 67

Setting Time Out of EXEC Privilege Mode......................................................................................... 68

Using Telnet to Access Another Network Device............................................................................. 69

Lock CONFIGURATION Mode............................................................................................................70

Viewing the Configuration Lock Status........................................................................................70

Recovering from a Forgotten Password on the Z9500..................................................................... 71

Ignoring the Startup Configuration and Booting from the Factory-Default Configuration.............71

Recovering from a Failed Start on the Z9500....................................................................................72

Restoring Factory-Default Settings.................................................................................................... 72

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

Restoring Factory-Default Boot Environment Variables..............................................................73

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

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

EAP over RADIUS........................................................................................................................... 77

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

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

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

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

Configuring Request Identity Re-Transmissions...............................................................................80

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

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

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

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

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

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

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

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

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

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

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

Implementing ACLs ...................................................................................................................... 91

IP Fragment Handling......................................................................................................................... 92

IP Fragments ACL Examples......................................................................................................... 92

Layer 4 ACL Rules Examples.........................................................................................................93

Configure a Standard IP ACL..............................................................................................................94

Configuring a Standard IP ACL Filter............................................................................................ 95

Configure an Extended IP ACL...........................................................................................................96

Configuring Filters with a Sequence Number..............................................................................96

Configuring Filters Without a Sequence Number........................................................................97

Configure Layer 2 and Layer 3 ACLs..................................................................................................98

Using ACL VLAN Groups.....................................................................................................................99

Guidelines for Configuring ACL VLAN Groups............................................................................ 99

Configuring an ACL VLAN Group...............................................................................................100

Allocating ACL VLAN CAM.......................................................................................................... 101

Applying an IP ACL to an Interface................................................................................................... 101

Configure Ingress ACLs...............................................................................................................102

Configure Egress ACLs................................................................................................................103

Applying Egress Layer 3 ACLs (Control-Plane).......................................................................... 103

Counting ACL Hits.......................................................................................................................104

IP Prefix Lists......................................................................................................................................104

Implementation Information...................................................................................................... 105

Configuration Task List for Prefix Lists....................................................................................... 105

ACL Resequencing............................................................................................................................109

Resequencing an ACL or Prefix List............................................................................................109

Route Maps.........................................................................................................................................111

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

Important Points to Remember.........................................................................................................111

Configuration Task List for Route Maps......................................................................................111

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

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

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

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

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

7 Bare Metal Provisioning (BMP)....................................................................... 119

Enhanced Behavior of the stop bmp Command............................................................................. 119

Removal of User-Defined String Parameter in the reload-type Command................................... 119

Service Tag Information in the Option 60 String............................................................................. 119

8 Bidirectional Forwarding Detection (BFD).................................................. 120

How BFD Works................................................................................................................................ 120

BFD Packet Format...................................................................................................................... 121

BFD Sessions................................................................................................................................122

BFD Three-Way Handshake........................................................................................................123

Session State Changes................................................................................................................ 124

Important Points to Remember........................................................................................................125

Configure BFD...................................................................................................................................125

Configure BFD for Static Routes.................................................................................................126

Configure BFD for OSPF..............................................................................................................127

Configure BFD for OSPFv3.......................................................................................................... 131

Configure BFD for IS-IS...............................................................................................................132

Configure BFD for BGP............................................................................................................... 135

Configure BFD for VRRP............................................................................................................. 142

Configuring Protocol Liveness....................................................................................................145

9 Border Gateway Protocol IPv4 (BGPv4).......................................................146

Autonomous Systems (AS)................................................................................................................146

Sessions and Peers............................................................................................................................148

Establish a Session.......................................................................................................................149

Route Reflectors................................................................................................................................149

Communities...............................................................................................................................150

BGP Attributes................................................................................................................................... 150

Best Path Selection Criteria......................................................................................................... 151

Weight..........................................................................................................................................153

Local Preference..........................................................................................................................153

Multi-Exit Discriminators (MEDs)................................................................................................ 154

Origin........................................................................................................................................... 155

AS Path.........................................................................................................................................156

Next Hop......................................................................................................................................156

Multiprotocol BGP.............................................................................................................................156

Implement BGP ................................................................................................................................ 157

Additional Path (Add-Path) Support............................................................................................157

Advertise IGP Cost as MED for Redistributed Routes.................................................................157

Ignore Router-ID for Some Best-Path Calculations..................................................................158

Four-Byte AS Numbers............................................................................................................... 158

AS4 Number Representation...................................................................................................... 158

AS Number Migration..................................................................................................................160

BGP4 Management Information Base (MIB).............................................................................. 162

Important Points to Remember..................................................................................................162

Configuration Information................................................................................................................163

BGP Configuration............................................................................................................................ 163

Enabling BGP...............................................................................................................................164

Configuring AS4 Number Representations................................................................................168

Configuring Peer Groups............................................................................................................169

Configuring BGP Fast Fail-Over..................................................................................................172

Configuring Passive Peering....................................................................................................... 174

Maintaining Existing AS Numbers During an AS Migration........................................................ 175

Allowing an AS Number to Appear in its Own AS Path..............................................................176

Enabling Neighbor Graceful Restart........................................................................................... 176

Filtering on an AS-Path Attribute.................................................................................................177

Regular Expressions as Filters..................................................................................................... 179

Redistributing Routes..................................................................................................................180

Enabling Additional Paths............................................................................................................181

Configuring IP Community Lists................................................................................................. 181

Configuring an IP Extended Community List.............................................................................183

Filtering Routes with Community Lists.......................................................................................184

Manipulating the COMMUNITY Attribute...................................................................................184

Changing MED Attributes........................................................................................................... 186

Changing the LOCAL_PREFERENCE Attribute.......................................................................... 186

Changing the NEXT_HOP Attribute............................................................................................187

Changing the WEIGHT Attribute................................................................................................ 188

Enabling Multipath...................................................................................................................... 188

Filtering BGP Routes................................................................................................................... 188

Filtering BGP Routes Using Route Maps.................................................................................... 190

Filtering BGP Routes Using AS-PATH Information.................................................................... 190

Configuring BGP Route Reflectors............................................................................................. 191

Aggregating Routes.....................................................................................................................192

Configuring BGP Confederations...............................................................................................192

Enabling Route Flap Dampening................................................................................................ 193

Changing BGP Timers.................................................................................................................196

Enabling BGP Neighbor Soft-Reconfiguration.......................................................................... 196

Route Map Continue................................................................................................................... 197

Enabling MBGP Configurations........................................................................................................198

BGP Regular Expression Optimization.............................................................................................199

Debugging BGP.................................................................................................................................199

Storing Last and Bad PDUs.........................................................................................................200

Capturing PDUs...........................................................................................................................201

PDU Counters............................................................................................................................. 202

Sample Configurations.....................................................................................................................202

10 Content Addressable Memory (CAM)......................................................... 212

CAM Allocation..................................................................................................................................212

Test CAM Usage................................................................................................................................ 214

View CAM-ACL Settings....................................................................................................................214

View CAM Usage............................................................................................................................... 215

Return to the Default CAM Configuration....................................................................................... 216

CAM Optimization.............................................................................................................................216

Applications for CAM Profiling..........................................................................................................217

LAG HashingLAG Hashing Based on Bidirectional Flow............................................................ 217

11 Control Plane Policing (CoPP)......................................................................218

Z9500 CoPP Implementation...........................................................................................................218

Protocol-based Control Plane Policing..................................................................................... 218

Queue-based Control Plane Policing........................................................................................ 219

CoPP Example.................................................................................................................................. 220

Configure Control Plane Policing.....................................................................................................221

Configuring CoPP for Protocols.................................................................................................221

Examples of Configuring CoPP for Protocols........................................................................... 222

Configuring CoPP for CPU Queues...........................................................................................224

Examples of Configuring CoPP for CPU Queues......................................................................224

Displaying CoPP Configuration..................................................................................................225

Troubleshooting CoPP Operation................................................................................................... 229

Enabling CPU Traffic Statistics................................................................................................... 229

Viewing CPU Traffic Statistics.....................................................................................................229

Troubleshooting CPU Packet Loss.............................................................................................229

Viewing Per-Protocol CoPP Counters.......................................................................................232

Viewing Per-Queue CoPP Counters..........................................................................................234

12 Debugging and Diagnostics......................................................................... 236

Offline Diagnostics........................................................................................................................... 236

Important Points to Remember................................................................................................. 236

Running Offline Diagnostics.......................................................................................................236

Examples of Running Offline Diagnostics..................................................................................237

TRACE Logs.......................................................................................................................................245

Auto Save on Reload, Crash, or Rollover................................................................................... 245

Last Restart Reason.......................................................................................................................... 246

Line Card Restart Causes and Reasons......................................................................................246

show hardware Commands.............................................................................................................246

Environmental Monitoring............................................................................................................... 248

Display Power Supply Status...................................................................................................... 248

Display Fan Status....................................................................................................................... 249

Display Transceiver Type............................................................................................................249

Recognize an Over-Temperature Condition............................................................................. 251

Troubleshoot an Over-Temperature Condition........................................................................252

Troubleshooting Packet Loss...........................................................................................................254

Displaying Drop Counters.......................................................................................................... 254

Displaying Dataplane Statistics...................................................................................................256

Displaying Line-Card Counters.................................................................................................. 257

Accessing Application Core Dumps.................................................................................................258

Mini Core Dumps..............................................................................................................................259

Full Kernel Core Dumps....................................................................................................................259

Enabling TCP Dumps........................................................................................................................260

13 Dynamic Host Configuration Protocol (DHCP)........................................ 261

DHCP Packet Format and Options...................................................................................................261

Assign an IP Address using DHCP....................................................................................................263

Implementation Information............................................................................................................264

Configure the System to be a DHCP Server....................................................................................265

Configuring the Server for Automatic Address Allocation........................................................ 265

Specifying a Default Gateway.....................................................................................................267

Configure a Method of Hostname Resolution...........................................................................267

Using DNS for Address Resolution............................................................................................. 267

Using NetBIOS WINS for Address Resolution............................................................................ 267

Creating Manual Binding Entries................................................................................................268

Debugging the DHCP Server......................................................................................................268

Using DHCP Clear Commands.................................................................................................. 268

Configure the System to be a Relay Agent......................................................................................269

Configure the System to be a DHCP Client..................................................................................... 271

DHCP Client on a Management Interface..................................................................................271

DHCP Client Operation with Other Features.............................................................................272

Configure Secure DHCP...................................................................................................................272

Option 82.....................................................................................................................................273

DHCP Snooping.......................................................................................................................... 273

Drop DHCP Packets on Snooped VLANs Only.......................................................................... 275

Dynamic ARP Inspection............................................................................................................ 276

Configuring Dynamic ARP Inspection........................................................................................277

Source Address Validation................................................................................................................278

Enabling IP Source Address Validation.......................................................................................278

DHCP MAC Source Address Validation......................................................................................279

Enabling IP+MAC Source Address Validation............................................................................ 279

14 Equal Cost Multi-Path (ECMP).....................................................................280

ECMP for Flow-Based Affinity..........................................................................................................280

Enabling Deterministic ECMP Next Hop....................................................................................280

Configuring the Hash Algorithm Seed.......................................................................................280

Link Bundle Monitoring.....................................................................................................................281

Managing ECMP Group Paths.....................................................................................................281

Creating an ECMP Group Bundle...............................................................................................282

Modifying the ECMP Group Threshold......................................................................................282

ECMP Support in L3 Host and LPM Tables......................................................................................283

15 Enabling FIPS Cryptography........................................................................ 285

Configuration Tasks..........................................................................................................................285

Preparing the System........................................................................................................................285

Enabling FIPS Mode..........................................................................................................................286

Generating Host-Keys...................................................................................................................... 286

Monitoring FIPS Mode Status........................................................................................................... 287

Disabling FIPS Mode......................................................................................................................... 287

16 Force10 Resilient Ring Protocol (FRRP).....................................................289

Protocol Overview............................................................................................................................289

Ring Status.................................................................................................................................. 290

Multiple FRRP Rings.....................................................................................................................291

Important FRRP Points................................................................................................................ 291

Important FRRP Concepts.......................................................................................................... 291

Implementing FRRP.......................................................................................................................... 293

FRRP Configuration.......................................................................................................................... 293

Creating the FRRP Group........................................................................................................... 293

Configuring the Control VLAN...................................................................................................294

Configuring and Adding the Member VLANs.............................................................................295

Setting the FRRP Timers............................................................................................................. 296

Clearing the FRRP Counters.......................................................................................................296

Viewing the FRRP Configuration................................................................................................ 297

Viewing the FRRP Information....................................................................................................297

Troubleshooting FRRP......................................................................................................................297

Configuration Checks.................................................................................................................297

Sample Configuration and Topology...............................................................................................297

17 GARP VLAN Registration Protocol (GVRP)................................................ 300

Important Points to Remember.......................................................................................................300

Configure GVRP................................................................................................................................ 301

Related Configuration Tasks.......................................................................................................301

Enabling GVRP Globally....................................................................................................................302

Enabling GVRP on a Layer 2 Interface............................................................................................. 302

Configure GVRP Registration...........................................................................................................302

Configure a GARP Timer.................................................................................................................. 303

18 Internet Group Management Protocol (IGMP).........................................305

IGMP Implementation Information..................................................................................................305

IGMP Protocol Overview..................................................................................................................305

IGMP Version 2............................................................................................................................305

IGMP Version 3............................................................................................................................307

Configure IGMP.................................................................................................................................310

Related Configuration Tasks.......................................................................................................310

Viewing IGMP Enabled Interfaces.....................................................................................................311

Selecting an IGMP Version................................................................................................................ 311

Viewing IGMP Groups....................................................................................................................... 312

Adjusting Timers................................................................................................................................312

Adjusting Query and Response Timers.......................................................................................312

Adjusting the IGMP Querier Timeout Value............................................................................... 313

Configuring a Static IGMP Group..................................................................................................... 313

Enabling IGMP Immediate-Leave.....................................................................................................314

IGMP Snooping................................................................................................................................. 314

IGMP Snooping Implementation Information............................................................................314

Configuring IGMP Snooping.......................................................................................................314

Removing a Group-Port Association..........................................................................................315

Disabling Multicast Flooding.......................................................................................................315

Specifying a Port as Connected to a Multicast Router.............................................................. 316

Configuring the Switch as Querier............................................................................................. 316

Fast Convergence after MSTP Topology Changes.......................................................................... 317

Designating a Multicast Router Interface......................................................................................... 317

19 Interfaces......................................................................................................... 318

Basic Interface Configuration...........................................................................................................318

Advanced Interface Configuration................................................................................................... 318

Port Numbering Convention............................................................................................................ 318

Interface Types..................................................................................................................................319

View Basic Interface Information..................................................................................................... 319

Enabling a Physical Interface............................................................................................................ 321

Physical Interfaces............................................................................................................................ 322

Port Pipes.....................................................................................................................................322

Network Processing Units (NPUs).............................................................................................. 322

Configuration Task List for Physical Interfaces..........................................................................322

Overview of Layer Modes........................................................................................................... 323

Configuring Layer 2 (Data Link) Mode........................................................................................323

Configuring Layer 2 (Interface) Mode........................................................................................ 324

Configuring Layer 3 (Network) Mode.........................................................................................324

Configuring Layer 3 (Interface) Mode........................................................................................ 325

Egress Interface Selection (EIS)........................................................................................................ 325

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

Configuring EIS........................................................................................................................... 326

Management Interfaces....................................................................................................................326

Configuring a Dedicated Management Interface .....................................................................326

Configuring a Management Interface on an Ethernet Port...................................................... 328

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

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

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

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

Port Channel Definition and Standards...................................................................................... 331

Port Channel Benefits..................................................................................................................331

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

10/40 Gbps Interfaces in Port Channels....................................................................................332

Configuration Tasks for Port Channel Interfaces...................................................................... 332

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

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

Reassigning an Interface to a New Port Channel......................................................................335

Configuring the Minimum Oper Up Links in a Port Channel....................................................336

Adding or Removing a Port Channel from a VLAN................................................................... 336

Assigning an IP Address to a Port Channel................................................................................ 337

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

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

Load-Balancing Methods............................................................................................................337

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

Bulk Configuration............................................................................................................................339

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

Bulk Configuration Examples..................................................................................................... 339

Defining Interface Range Macros.....................................................................................................341

Define the Interface Range.........................................................................................................342

Choosing an Interface-Range Macro........................................................................................ 342

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

Displaying Traffic Statistics on HiGig Ports......................................................................................343

Link Bundle Monitoring.................................................................................................................... 344

Monitoring HiGig Link Bundles........................................................................................................ 344

Guidelines for Monitoring HiGig Link-Bundles .........................................................................345

Enabling HiGig Link-Bundle Monitoring....................................................................................346

Splitting QSFP Ports to SFP+ Ports...................................................................................................347

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port...................................................... 347

Link Dampening................................................................................................................................ 352

Important Points to Remember..................................................................................................353

Enabling Link Dampening...........................................................................................................353

Using Ethernet Pause Frames for Flow Control.............................................................................. 355

Threshold Settings...................................................................................................................... 355

Enabling Pause Frames...............................................................................................................356

Configure the MTU Size on an Interface......................................................................................... 356

Auto-Negotiation on Ethernet Interfaces........................................................................................ 357

Set Auto-Negotiation Options................................................................................................... 358

View Advanced Interface Information............................................................................................. 358

Configuring the Interface Sampling Size................................................................................... 359

Dynamic Counters............................................................................................................................360

Clearing Interface Counters........................................................................................................361

20 Internet Protocol Security (IPSec).............................................................. 362

Configuring IPSec ............................................................................................................................ 363

21 IPv4 Routing....................................................................................................364

IP Addresses......................................................................................................................................364

Implementation Information......................................................................................................364

Configuration Tasks for IP Addresses.............................................................................................. 364

Assigning IP Addresses to an Interface............................................................................................ 365

Configuring Static Routes................................................................................................................ 366

Configure Static Routes for the Management Interface................................................................. 367

Enabling Directed Broadcast............................................................................................................367

Resolution of Host Names............................................................................................................... 368

Enabling Dynamic Resolution of Host Names................................................................................ 368

Specifying the Local System Domain and a List of Domains..........................................................369

Configuring DNS with Traceroute................................................................................................... 369

ARP.................................................................................................................................................... 370

Configuration Tasks for ARP.............................................................................................................370

Configuring Static ARP Entries..........................................................................................................371

Enabling Proxy ARP........................................................................................................................... 371

Clearing ARP Cache.......................................................................................................................... 371

ARP Learning via Gratuitous ARP......................................................................................................372

Enabling ARP Learning via Gratuitous ARP...................................................................................... 372

ARP Learning via ARP Request..........................................................................................................372

Configuring ARP Retries....................................................................................................................373

ICMP.................................................................................................................................................. 374

Configuration Tasks for ICMP.......................................................................................................... 374

Enabling ICMP Unreachable Messages............................................................................................374

UDP Helper........................................................................................................................................375

Configure UDP Helper................................................................................................................ 375

Important Points to Remember..................................................................................................375

Enabling UDP Helper........................................................................................................................ 375

Configuring a Broadcast Address.....................................................................................................376

Configurations Using UDP Helper....................................................................................................376

UDP Helper with Broadcast-All Addresses...................................................................................... 376

UDP Helper with Subnet Broadcast Addresses................................................................................377

UDP Helper with Configured Broadcast Addresses........................................................................ 378

UDP Helper with No Configured Broadcast Addresses.................................................................. 378

Troubleshooting UDP Helper...........................................................................................................379

22 IPv6 Routing................................................................................................... 380

Protocol Overview............................................................................................................................380

Extended Address Space............................................................................................................ 380

Stateless Autoconfiguration....................................................................................................... 380

IPv6 Headers................................................................................................................................381

IPv6 Header Fields.......................................................................................................................382

Extension Header Fields..............................................................................................................383

IPv6 Addressing...........................................................................................................................384

IPv6 Implementation on the Dell Networking OS...........................................................................386

Configuring the LPM Table for IPv6 Extended Prefixes.................................................................. 388

ICMPv6..............................................................................................................................................388

Path MTU Discovery......................................................................................................................... 388

IPv6 Neighbor Discovery..................................................................................................................389

IPv6 Neighbor Discovery of MTU Packets.................................................................................390

Configuring the IPv6 Recursive DNS Server..............................................................................390

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

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

Adjusting Your CAM Profile........................................................................................................ 393

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

Assigning a Static IPv6 Route..................................................................................................... 394

Configuring Telnet with IPv6......................................................................................................395

SNMP over IPv6...........................................................................................................................395

Displaying IPv6 Information....................................................................................................... 395

Displaying an IPv6 Configuration...............................................................................................396

Displaying IPv6 Routes............................................................................................................... 396

Displaying the Running Configuration for an Interface............................................................ 398

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..........................................................................................................................400

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

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

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

Timers..........................................................................................................................................401

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..............................................................................427

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

25 Layer 2..............................................................................................................440

Manage the MAC Address Table......................................................................................................440

Clearing the MAC Address Table............................................................................................... 440

Setting the Aging Time for Dynamic Entries............................................................................. 440

Configuring a Static MAC Address..............................................................................................441

Displaying the MAC Address Table.............................................................................................441

MAC Learning Limit...........................................................................................................................441

Setting the MAC Learning Limit..................................................................................................442

mac learning-limit Dynamic.......................................................................................................442

mac learning-limit mac-address-sticky.....................................................................................442

mac learning-limit station-move............................................................................................... 443

mac learning-limit no-station-move.........................................................................................443

Learning Limit Violation Actions................................................................................................ 444

Setting Station Move Violation Actions......................................................................................444

Recovering from Learning Limit and Station Move Violations................................................. 444

NIC Teaming.....................................................................................................................................445

Configure Redundant Pairs.............................................................................................................. 446

Important Points about Configuring Redundant Pairs..............................................................448

Far-End Failure Detection................................................................................................................ 449

FEFD State Changes....................................................................................................................450

Configuring FEFD........................................................................................................................ 451

Enabling FEFD on an Interface................................................................................................... 452

Debugging FEFD......................................................................................................................... 453

26 Link Layer Discovery Protocol (LLDP)........................................................455

802.1AB (LLDP) Overview.................................................................................................................455

Protocol Data Units.....................................................................................................................455

Optional TLVs....................................................................................................................................456

Management TLVs...................................................................................................................... 456

TIA-1057 (LLDP-MED) Overview......................................................................................................458

TIA Organizationally Specific TLVs.............................................................................................459

Configure LLDP.................................................................................................................................463

Related Configuration Tasks...................................................................................................... 463

Important Points to Remember................................................................................................. 464

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

CONFIGURATION versus INTERFACE Configurations................................................................... 464

Enabling LLDP...................................................................................................................................465

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

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

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

Advertising TLVs................................................................................................................................466

Viewing the LLDP Configuration......................................................................................................467

Viewing Information Advertised by Adjacent LLDP Agents............................................................ 468

Configuring LLDPDU Intervals......................................................................................................... 469

Configuring Transmit and Receive Mode........................................................................................469

Configuring a Time to Live...............................................................................................................470

Debugging LLDP................................................................................................................................471

Relevant Management Objects........................................................................................................ 472

27 Microsoft Network Load Balancing............................................................478

NLB Unicast and Multicast Modes................................................................................................... 478

NLB Unicast Mode Example....................................................................................................... 478

NLB Multicast Mode Example.....................................................................................................479

NLB Benefits......................................................................................................................................479

NLB Restrictions................................................................................................................................479

NLB VLAN Flooding..........................................................................................................................480

Configuring NLB on a Switch...........................................................................................................480

.....................................................................................................................................................480

28 Multicast Source Discovery Protocol (MSDP)...........................................481

Protocol Overview............................................................................................................................ 481

Anycast RP........................................................................................................................................ 483

Implementation Information............................................................................................................483

Configure Multicast Source Discovery Protocol.............................................................................483

Related Configuration Tasks...................................................................................................... 483

Enable MSDP.....................................................................................................................................487

Manage the Source-Active Cache...................................................................................................488

Viewing the Source-Active Cache............................................................................................. 488

Limiting the Source-Active Cache.............................................................................................489

Clearing the Source-Active Cache............................................................................................ 489

Enabling the Rejected Source-Active Cache............................................................................ 489

Accept Source-Active Messages that Fail the RFP Check.............................................................. 489

Specifying Source-Active Messages................................................................................................ 493

Limiting the Source-Active Messages from a Peer......................................................................... 494

Preventing MSDP from Caching a Local Source.............................................................................494

Preventing MSDP from Caching a Remote Source.........................................................................495

Preventing MSDP from Advertising a Local Source........................................................................ 496

Logging Changes in Peership States................................................................................................497

Terminating a Peership.....................................................................................................................497

Clearing Peer Statistics..................................................................................................................... 497

Debugging MSDP............................................................................................................................. 498

MSDP with Anycast RP..................................................................................................................... 498

Configuring Anycast RP................................................................................................................... 500

Reducing Source-Active Message Flooding..............................................................................500

Specifying the RP Address Used in SA Messages...................................................................... 500

MSDP Sample Configurations.......................................................................................................... 503

29 Multiple Spanning Tree Protocol (MSTP).................................................. 506

Protocol Overview............................................................................................................................506

Spanning Tree Variations..................................................................................................................507

Implementation Information...................................................................................................... 507

Configure Multiple Spanning Tree Protocol....................................................................................507

Related Configuration Tasks.......................................................................................................507

Enable Multiple Spanning Tree Globally..........................................................................................508

Adding and Removing Interfaces.....................................................................................................508

Creating Multiple Spanning Tree Instances.....................................................................................508

Influencing MSTP Root Selection.....................................................................................................510

Interoperate with Non-Dell Bridges.................................................................................................510

Changing the Region Name or Revision.......................................................................................... 511

Modifying Global Parameters............................................................................................................511

Modifying the Interface Parameters................................................................................................. 512

Configuring an EdgePort.................................................................................................................. 513

Flush MAC Addresses after a Topology Change..............................................................................514

MSTP Sample Configurations........................................................................................................... 514

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

ConfigurationExample Running-Configuration.........................................................................515

Debugging and Verifying MSTP Configurations.............................................................................. 518

30 Multicast Features..........................................................................................521

Enabling IP Multicast......................................................................................................................... 521

Multicast with ECMP......................................................................................................................... 521

Implementation Information............................................................................................................522

First Packet Forwarding for Lossless Multicast................................................................................ 523

Multicast Policies...............................................................................................................................523

IPv4 Multicast Policies.................................................................................................................523

31 Open Shortest Path First (OSPFv2 and OSPFv3)....................................... 531

Protocol Overview.............................................................................................................................531

Autonomous System (AS) Areas..................................................................................................531

Area Types................................................................................................................................... 532

Networks and Neighbors............................................................................................................533

Router Types............................................................................................................................... 533

Designated and Backup Designated Routers.............................................................................535

Link-State Advertisements (LSAs)............................................................................................... 535

Virtual Links..................................................................................................................................537

Router Priority and Cost..............................................................................................................537

OSPF Implementation...................................................................................................................... 538

Fast Convergence (OSPFv2, IPv4 Only)..................................................................................... 538

Multi-Process OSPFv2 (IPv4 only)..............................................................................................538

RFC-2328 Compliant OSPF Flooding........................................................................................ 539

OSPF ACK Packing......................................................................................................................540

Setting OSPF Adjacency with Cisco Routers.............................................................................540

Configuration Information................................................................................................................541

Configuration Task List for OSPFv2 (OSPF for IPv4).................................................................. 541

Sample Configurations for OSPFv2..................................................................................................556

Basic OSPFv2 Router Topology..................................................................................................556

OSPF Area 0 — Te 1/1 and 1/2....................................................................................................556

OSPF Area 0 — Te 3/1 and 3/2....................................................................................................557

OSPF Area 0 — Te 2/1 and 2/2....................................................................................................557

Configuration Task List for OSPFv3 (OSPF for IPv6)........................................................................557

Enabling IPv6 Unicast Routing................................................................................................... 558

Assigning IPv6 Addresses on an Interface................................................................................. 558

Assigning Area ID on an Interface.............................................................................................. 558

Assigning OSPFv3 Process ID and Router ID Globally.............................................................. 559

Configuring Stub Areas...............................................................................................................559

Configuring Passive-Interface....................................................................................................559

Redistributing Routes................................................................................................................. 560

Configuring a Default Route...................................................................................................... 560

OSPFv3 Authentication Using IPsec........................................................................................... 561

Troubleshooting OSPFv3............................................................................................................568

32 Pay As You Grow ........................................................................................... 570

Installing a License............................................................................................................................570

Displaying License Information........................................................................................................ 573

33 PIM Sparse-Mode (PIM-SM)..........................................................................575

Implementation Information............................................................................................................ 575

Protocol Overview............................................................................................................................ 575

Requesting Multicast Traffic........................................................................................................575

Refuse Multicast Traffic...............................................................................................................576

Send Multicast Traffic..................................................................................................................576

Configuring PIM-SM..........................................................................................................................577

Related Configuration Tasks....................................................................................................... 577

Enable PIM-SM.................................................................................................................................. 577

Configuring S,G Expiry Timers..........................................................................................................578

Configuring a Static Rendezvous Point............................................................................................579

Overriding Bootstrap Router Updates....................................................................................... 580

Configuring a Designated Router.................................................................................................... 580

Creating Multicast Boundaries and Domains...................................................................................581

Enabling PIM-SM Graceful Restart................................................................................................... 581

34 PIM Source-Specific Mode (PIM-SSM).......................................................582

Implementation Information............................................................................................................582

Important Points to Remember................................................................................................. 582

Configure PIM-SMM......................................................................................................................... 583

Related Configuration Tasks.......................................................................................................583

Enabling PIM-SSM.............................................................................................................................583

Use PIM-SSM with IGMP Version 2 Hosts........................................................................................583

Configuring PIM-SSM with IGMPv2........................................................................................... 584

35 Policy-based Routing (PBR)......................................................................... 586

Overview........................................................................................................................................... 586

Implementing Policy-based Routing with Dell Networking OS.....................................................588

Configuration Task List for Policy-based Routing.......................................................................... 588

PBR Exceptions (Permit)..............................................................................................................591

Sample Configuration.......................................................................................................................593

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

Redirect-List GOLD.....................................................................................................................594

36 Port Monitoring..............................................................................................596

Local Port Monitoring.......................................................................................................................596

Important Points to Remember................................................................................................. 596

Examples of Port Monitoring......................................................................................................596

Configuring Port Monitoring......................................................................................................598

Remote Port Mirroring......................................................................................................................599

Remote Port Mirroring Example.................................................................................................599

Configuring Remote Port Mirroring...........................................................................................600

Displaying a Remote-Port Mirroring Configuration..................................................................602

Configuring Remote Port Monitoring........................................................................................602

Encapsulated Remote-Port Monitoring.......................................................................................... 606

37 Private VLANs (PVLAN)..................................................................................608

Private VLAN Concepts.................................................................................................................... 608

Using the Private VLAN Commands................................................................................................ 609

Configuration Task List..................................................................................................................... 610

Creating PVLAN ports................................................................................................................. 610

Creating a Primary VLAN............................................................................................................. 611

Creating a Community VLAN......................................................................................................612

Creating an Isolated VLAN.......................................................................................................... 613

Private VLAN Configuration Example...............................................................................................614

Inspecting the Private VLAN Configuration..................................................................................... 615

38 Per-VLAN Spanning Tree Plus (PVST+)...................................................... 618

Protocol Overview............................................................................................................................ 618

Implementation Information............................................................................................................ 619

Configure Per-VLAN Spanning Tree Plus.........................................................................................619

Related Configuration Tasks.......................................................................................................619

Enabling PVST+.................................................................................................................................619

Disabling PVST+............................................................................................................................... 620

Influencing PVST+ Root Selection...................................................................................................620

Modifying Global PVST+ Parameters...............................................................................................622

Modifying Interface PVST+ Parameters...........................................................................................623

Configuring an EdgePort..................................................................................................................624

PVST+ in Multi-Vendor Networks....................................................................................................625

Enabling PVST+ Extend System ID...................................................................................................625

PVST+ Sample Configurations.........................................................................................................626

39 Quality of Service (QoS)................................................................................628

Implementation Information............................................................................................................628

Port-Based QoS Configurations...................................................................................................... 629

Setting dot1p Priorities for Incoming Traffic..............................................................................629

Honoring dot1p Priorities on Ingress Traffic..............................................................................630

Configuring Port-Based Rate Policing.......................................................................................630

Configuring Port-Based Rate Shaping....................................................................................... 631

Policy-Based QoS Configurations................................................................................................... 632

Classify Traffic............................................................................................................................. 632

Create a QoS Policy....................................................................................................................638

Create Policy Maps......................................................................................................................641

DSCP Color Maps............................................................................................................................. 645

Creating a DSCP Color Map.......................................................................................................645

Displaying DSCP Color Maps..................................................................................................... 646

Displaying a DSCP Color Policy Configuration ........................................................................ 646

Enabling QoS Rate Adjustment........................................................................................................ 647

Enabling Strict-Priority Queueing....................................................................................................648

Weighted Random Early Detection................................................................................................. 648

Creating WRED Profiles..............................................................................................................649

Applying a WRED Profile to Traffic.............................................................................................650

Displaying Default and Configured WRED Profiles................................................................... 650

Displaying WRED Drop Statistics................................................................................................650

Explicit Congestion Notification.......................................................................................................651

ECN Packet Classification........................................................................................................... 651

Example: Color-marking non-ECN Packets in One Traffic Class............................................ 652

Example: Color-marking non-ECN Packets in Different Traffic Classes................................. 652

Using A Configurable Weight for WRED and ECN.......................................................................... 653

Benefits of Using a Configurable Weight for WRED with ECN................................................. 654

Setting Average Queue Size using a Weight..............................................................................654

Global Service-Pools for WRED with ECN.................................................................................655

Configuring a Weight for WRED and ECN Operation............................................................... 656

Pre-Calculating Available QoS CAM Space..................................................................................... 657

SNMP Support for Buffer Statistics Tracking................................................................................... 658

40 Routing Information Protocol (RIP)...........................................................659

Protocol Overview............................................................................................................................659

RIPv1............................................................................................................................................ 659

RIPv2............................................................................................................................................659

Implementation Information............................................................................................................660

Configuration Information...............................................................................................................660

Configuration Task List...............................................................................................................660

RIP Configuration Example.........................................................................................................667

41 Remote Monitoring (RMON)........................................................................ 673

Implementation Information............................................................................................................ 673

Fault Recovery...................................................................................................................................673

Setting the RMON Alarm............................................................................................................ 674

Configuring an RMON Event...................................................................................................... 675

Configuring RMON Collection Statistics....................................................................................675

Configuring the RMON Collection History................................................................................676

42 Rapid Spanning Tree Protocol (RSTP)........................................................677

Protocol Overview............................................................................................................................ 677

Configuring Rapid Spanning Tree.................................................................................................... 677

Related Configuration Tasks.......................................................................................................677

Important Points to Remember........................................................................................................677

RSTP and VLT.............................................................................................................................. 678

Configuring Interfaces for Layer 2 Mode.........................................................................................678

Enabling Rapid Spanning Tree Protocol Globally............................................................................679

Adding and Removing Interfaces..................................................................................................... 681

Modifying Global Parameters...........................................................................................................682

Enabling SNMP Traps for Root Elections and Topology Changes........................................... 683

Modifying Interface Parameters.......................................................................................................683

Influencing RSTP Root Selection..................................................................................................... 684

Configuring an EdgePort..................................................................................................................684

Configuring Fast Hellos for Link State Detection............................................................................685

43 Security............................................................................................................ 687

Role-Based Access Control..............................................................................................................687

Overview of RBAC.......................................................................................................................687

User Roles................................................................................................................................... 690

AAA Authentication and Authorization for Roles.......................................................................693

Role Accounting......................................................................................................................... 696

Display Information About User Roles....................................................................................... 697

AAA Accounting................................................................................................................................699

Configuration Task List for AAA Accounting............................................................................. 699

AAA Authentication........................................................................................................................... 701

Configuration Task List for AAA Authentication.........................................................................701

AAA Authorization.............................................................................................................................704

Privilege Levels Overview........................................................................................................... 704

Configuration Task List for Privilege Levels............................................................................... 705

RADIUS.............................................................................................................................................. 709

RADIUS Authentication and Authorization................................................................................ 709

Configuration Task List for RADIUS............................................................................................710

TACACS+........................................................................................................................................... 713

Configuration Task List for TACACS+.........................................................................................713

TACACS+ Remote Authentication and Authorization............................................................... 715

Command Authorization.............................................................................................................716

Protection from TCP Tiny and Overlapping Fragment Attacks....................................................... 717

Enabling SCP and SSH.......................................................................................................................717

Using SCP with SSH to Copy a Software Image.........................................................................718

Removing the RSA Host Keys and Zeroizing Storage ............................................................... 719

Configuring When to Re-generate an SSH Key ........................................................................ 719

Configuring the SSH Server Cipher List..................................................................................... 720

Configuring the HMAC Algorithm for the SSH Server...............................................................720

Configuring the SSH Server Cipher List...................................................................................... 721

Secure Shell Authentication........................................................................................................ 721

Troubleshooting SSH.................................................................................................................. 724

Telnet.................................................................................................................................................724

VTY Line and Access-Class Configuration.......................................................................................725

VTY Line Local Authentication and Authorization..................................................................... 725

VTY Line Remote Authentication and Authorization.................................................................726

VTY MAC-SA Filter Support.........................................................................................................726

44 Service Provider Bridging.............................................................................728

VLAN Stacking...................................................................................................................................728

Important Points to Remember..................................................................................................729

Configure VLAN Stacking........................................................................................................... 730

Creating Access and Trunk Ports............................................................................................... 730

Enable VLAN-Stacking for a VLAN..............................................................................................731

Configuring the Protocol Type Value for the Outer VLAN Tag................................................. 731

Configuring Options for Trunk Ports..........................................................................................731

Debugging VLAN Stacking..........................................................................................................732

VLAN Stacking in Multi-Vendor Networks................................................................................. 733

VLAN Stacking Packet Drop Precedence.........................................................................................736

Enabling Drop Eligibility.............................................................................................................. 736

Honoring the Incoming DEI Value..............................................................................................737

Marking Egress Packets with a DEI Value...................................................................................738

Dynamic Mode CoS for VLAN Stacking........................................................................................... 738

Mapping C-Tag to S-Tag dot1p Values..................................................................................... 740

Layer 2 Protocol Tunneling..............................................................................................................740

Implementation Information...................................................................................................... 742

Enabling Layer 2 Protocol Tunneling......................................................................................... 742

Specifying a Destination MAC Address for BPDUs.................................................................... 743

Setting Rate-Limit BPDUs........................................................................................................... 743

Debugging Layer 2 Protocol Tunneling.....................................................................................744

Provider Backbone Bridging.............................................................................................................744

45 sFlow.................................................................................................................745

Overview............................................................................................................................................745

Implementation Information............................................................................................................ 745

Important Points to Remember................................................................................................. 746

Enabling and Disabling sFlow...........................................................................................................746

Enabling and Disabling sFlow on an Interface.................................................................................746

sFlow Show Commands................................................................................................................... 747

Displaying Show sFlow Global....................................................................................................747

Displaying Show sFlow on an Interface..................................................................................... 747

Displaying Show sFlow on a Line Card...................................................................................... 748

Configuring Specify Collectors........................................................................................................ 748

Changing the Polling Intervals......................................................................................................... 748

Back-Off Mechanism........................................................................................................................749

sFlow on LAG ports...........................................................................................................................749

Enabling Extended sFlow..................................................................................................................749

Important Points to Remember..................................................................................................750

46 Simple Network Management Protocol (SNMP)......................................752

Protocol Overview............................................................................................................................ 752

Implementation Information............................................................................................................ 752

Configuration Task List for SNMP.....................................................................................................752

Related Configuration Tasks.......................................................................................................753

Important Points to Remember........................................................................................................753

Set up SNMP......................................................................................................................................753

Creating a Community................................................................................................................753

Setting Up User-Based Security (SNMPv3).................................................................................754

Reading Managed Object Values......................................................................................................755

Writing Managed Object Values.......................................................................................................756

Configuring Contact and Location Information using SNMP.........................................................756

Subscribing to Managed Object Value Updates using SNMP..........................................................757

Enabling a Subset of SNMP Traps.................................................................................................... 758

Copy Configuration Files Using SNMP............................................................................................ 760

Copying a Configuration File......................................................................................................762

Copying Configuration Files via SNMP.......................................................................................763

Copying the Startup-Config Files to the Running-Config........................................................ 763

Copying the Startup-Config Files to the Server via FTP............................................................764

Copying the Startup-Config Files to the Server via TFTP..........................................................764

Copy a Binary File to the Startup-Configuration....................................................................... 765

Additional MIB Objects to View Copy Statistics.........................................................................765

Obtaining a Value for MIB Objects.............................................................................................766

Manage VLANs using SNMP..............................................................................................................767

Creating a VLAN.......................................................................................................................... 767

Assigning a VLAN Alias................................................................................................................ 767

Displaying the Ports in a VLAN....................................................................................................767

Add Tagged and Untagged Ports to a VLAN.............................................................................. 767

Managing Overload on Startup........................................................................................................ 768

Enabling and Disabling a Port using SNMP......................................................................................769

Fetch Dynamic MAC Entries using SNMP........................................................................................ 770

Deriving Interface Indices..................................................................................................................771

Monitor Port-Channels.....................................................................................................................772

Troubleshooting SNMP Operation...................................................................................................774

47 Storm Control................................................................................................. 775

Configure Storm Control..................................................................................................................775

Configuring Storm Control from INTERFACE Mode................................................................. 775

Configuring Storm Control from CONFIGURATION Mode...................................................... 775

48 Spanning Tree Protocol (STP)......................................................................776

Protocol Overview............................................................................................................................ 776

Configure Spanning Tree..................................................................................................................776

Related Configuration Tasks.......................................................................................................776

Important Points to Remember........................................................................................................776

Configuring Interfaces for Layer 2 Mode......................................................................................... 777

Enabling Spanning Tree Protocol Globally...................................................................................... 778

Adding an Interface to the Spanning Tree Group........................................................................... 780

Modifying Global Parameters........................................................................................................... 781

Modifying Interface STP Parameters................................................................................................782

Enabling PortFast.............................................................................................................................. 782

Preventing Network Disruptions with BPDU Guard........................................................................ 783

Selecting STP Root............................................................................................................................785

STP Root Guard................................................................................................................................ 786

Root Guard Scenario.................................................................................................................. 786

Configuring Root Guard............................................................................................................. 787

Enabling SNMP Traps for Root Elections and Topology Changes................................................. 788

STP Loop Guard................................................................................................................................788

Configuring Loop Guard.............................................................................................................789

Displaying STP Guard Configuration............................................................................................... 790

49 System Time and Date...................................................................................792

Network Time Protocol.................................................................................................................... 792

Protocol Overview...................................................................................................................... 793

Configure the Network Time Protocol...................................................................................... 793

Enabling NTP...............................................................................................................................794

Setting the Hardware Clock with the Time Derived from NTP.................................................794

Configuring NTP Broadcasts...................................................................................................... 795

Disabling NTP on an Interface....................................................................................................795

Configuring a Source IP Address for NTP Packets.................................................................... 795

Configuring NTP Authentication................................................................................................796

Time and Date...................................................................................................................................799

Configuration Task List .............................................................................................................. 799

Setting the Time and Date for the Switch Hardware Clock......................................................799

Setting the Time and Date for the Switch Software Clock....................................................... 799

Setting the Timezone................................................................................................................. 800

Set Daylight Saving Time............................................................................................................800

Setting Daylight Saving Time Once........................................................................................... 800

Setting Recurring Daylight Saving Time.....................................................................................801

50 Tunneling ....................................................................................................... 803

Configuring a Tunnel........................................................................................................................803

Configuring Tunnel Keepalive Settings........................................................................................... 804

Configuring a Tunnel Interface........................................................................................................805

Configuring Tunnel allow-remote Decapsulation..........................................................................805

Configuring Tunnel source anylocal Decapsulation...................................................................... 806

Multipoint Receive-Only Tunnels....................................................................................................806

Guidelines for Configuring Multipoint Receive-Only Tunnels................................................. 806

51 Upgrade Procedures......................................................................................808

Upgrade OverviewGet Help with Upgrades....................................................................................808

Z9500 Bootup and Upgrades.......................................................................................................... 808

52 Uplink Failure Detection (UFD)....................................................................810

Feature Description...........................................................................................................................810

How Uplink Failure Detection Works................................................................................................811

UFD and NIC Teaming...................................................................................................................... 812

Important Points to Remember........................................................................................................812

Configuring Uplink Failure Detection...............................................................................................813

Clearing a UFD-Disabled Interface...................................................................................................815

Displaying Uplink Failure Detection................................................................................................. 816

Sample Configuration: Uplink Failure Detection.............................................................................818

53 Virtual LANs (VLANs)..................................................................................... 820

Default VLAN.....................................................................................................................................820

Port-Based VLANs.............................................................................................................................821

VLANs and Port Tagging................................................................................................................... 821

Configuration Task List.....................................................................................................................822

Creating a Port-Based VLAN...................................................................................................... 822

Assigning Interfaces to a VLAN...................................................................................................823

Moving Untagged Interfaces...................................................................................................... 824

Assigning an IP Address to a VLAN.............................................................................................826

Configuring Native VLANs................................................................................................................826

Enabling Null VLAN as the Default VLAN......................................................................................... 827

54 Virtual Link Trunking (VLT).......................................................................... 828

Overview........................................................................................................................................... 828

VLT on Core Switches................................................................................................................ 829

Enhanced VLT............................................................................................................................. 829

VLT Terminology.............................................................................................................................. 830

Configure Virtual Link Trunking........................................................................................................831

Important Points to Remember..................................................................................................831

Configuration Notes................................................................................................................... 832

Primary and Secondary VLT Peers............................................................................................. 835

RSTP and VLT..............................................................................................................................836

VLT Bandwidth Monitoring.........................................................................................................836

VLT and Stacking.........................................................................................................................836

VLT and IGMP Snooping.............................................................................................................837

VLT IPv6.......................................................................................................................................837

VLT Port Delayed Restoration.....................................................................................................837

PIM-Sparse Mode Support on VLT.............................................................................................837

VLT Routing ................................................................................................................................839

Non-VLT ARP Sync......................................................................................................................841

RSTP Configuration.......................................................................................................................... 842

Preventing Forwarding Loops in a VLT Domain........................................................................842

Sample RSTP Configuration....................................................................................................... 842

Configuring VLT..........................................................................................................................843

eVLT Configuration Example........................................................................................................... 854

eVLT Configuration Step Examples............................................................................................855

PIM-Sparse Mode Configuration Example...................................................................................... 857

Verifying a VLT Configuration.......................................................................................................... 857

Additional VLT Sample Configurations............................................................................................ 861

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..........................................................................................865

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..................................................................... 867

PVLAN Operations When One VLT Peer is Down..................................................................... 867

PVLAN Operations When a VLT Peer is Restarted.....................................................................867

Interoperation of VLT Nodes in a PVLAN with ARP Requests...................................................868

Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN....... 868

Configuring a VLT VLAN or LAG in a PVLAN................................................................................... 870

Creating a VLT LAG or a VLT VLAN............................................................................................870

Associating the VLT LAG or VLT VLAN in a PVLAN.................................................................... 871

Proxy ARP Capability on VLT Peer Nodes........................................................................................872

Working of Proxy ARP for VLT Peer Nodes................................................................................872

VLT Nodes as Rendezvous Points for Multicast Resiliency.............................................................873

55 VLT Proxy Gateway........................................................................................ 875

Proxy Gateway in VLT Domains....................................................................................................... 875

LLDP organizational TLV for proxy gateway.............................................................................. 877

Sample Configuration Scenario for VLT Proxy Gateway...........................................................878

Configuring an LLDP VLT Proxy Gateway.......................................................................................880

56 Virtual Router Redundancy Protocol (VRRP)............................................881

VRRP Overview..................................................................................................................................881

VRRP Benefits................................................................................................................................... 882

VRRP Implementation...................................................................................................................... 882

VRRP Configuration..........................................................................................................................883

Configuration Task List...............................................................................................................883

Setting VRRP Initialization Delay................................................................................................ 893

Sample Configurations.....................................................................................................................894

VRRP for an IPv4 Configuration.................................................................................................894

VRRP in a VRF Configuration......................................................................................................899

57 Standards Compliance..................................................................................905

IEEE Compliance.............................................................................................................................. 905

RFC and I-D Compliance.................................................................................................................906

General Internet Protocols.........................................................................................................906

Border Gateway Protocol (BGP).................................................................................................907

General IPv4 Protocols...............................................................................................................908

General IPv6 Protocols...............................................................................................................909

Intermediate System to Intermediate System (IS-IS).................................................................910

Network Management................................................................................................................ 912

Multicast...................................................................................................................................... 918

Open Shortest Path First (OSPF).................................................................................................919

Routing Information Protocol (RIP)........................................................................................... 920

MIB Location.....................................................................................................................................920

About this Guide

This guide describes the protocols and features that the Dell Networking Operating Software (OS) supports on the Z9500 system and provides configuration instructions and examples for implementing them.

Though this guide contains information on protocols, it is not intended to be a complete reference. This guide is a reference for configuring protocols on Dell Networking systems. For complete information about protocols, refer to related documentation, including IETF requests for comments (RFCs). The instructions in this guide cite relevant RFCs. The Standards Compliance chapter contains a complete list of the supported RFCs and management information base files (MIBs).

Audience

This document is intended for system administrators who are responsible for configuring and maintaining networks and assumes knowledge in Layer 2 and Layer 3 networking technologies.

Conventions

This guide uses the following conventions to describe command syntax.

Keyword

parameter Parameters are in italics and require a number or word to be entered in the CLI.

{X} Keywords and parameters within braces must be entered in the CLI.

[X] Keywords and parameters within brackets are optional.

x|y Keywords and parameters separated by a bar require you to choose one option.

x||y Keywords and parameters separated by a double bar allows you to choose any or

Keywords are in Courier (a monospaced font) and must be entered in the CLI as listed.

all of the options.

Dell Z9500 Configuration manual

Specifications and Main Features

Frequently Asked Questions

User Manual

About this Guide

Audience

Conventions

Related Documents