Dell PowerSwitch S3048-ON User guide

Dell EMC Conguration Guide for the S3048–ON

System

9.14.0.0

Notes, cautions, and warnings

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

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

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

trademarks may be trademarks of their respective owners.

2018 - 07

Rev. A00

Contents

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

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

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

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

2 Conguration Fundamentals........................................................................................................................ 35

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

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

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

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

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

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

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

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

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

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

Multiple Users in Conguration Mode...........................................................................................................................43

3 Getting Started............................................................................................................................................45

Console Access................................................................................................................................................................46

Serial Console.............................................................................................................................................................46

Accessing the CLI Interface and Running Scripts Using SSH....................................................................................47

Entering CLI commands Using an SSH Connection..............................................................................................47

Executing Local CLI Scripts Using an SSH Connection........................................................................................ 47

Default Conguration...................................................................................................................................................... 48

Conguring a Host Name............................................................................................................................................... 48

Accessing the System Remotely....................................................................................................................................48

Accessing the System Remotely..............................................................................................................................48

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

Congure a Management Route..............................................................................................................................49

Conguring a Username and Password..................................................................................................................49

Conguring the Enable Password..................................................................................................................................50

Conguration File Management.....................................................................................................................................50

Copy Files to and from the System..........................................................................................................................51

Mounting an NFS File System...................................................................................................................................51

Save the Running-Conguration..............................................................................................................................53

Congure the Overload Bit for a Startup Scenario............................................................................................... 54

Viewing Files...............................................................................................................................................................54

Compressing Conguration Files............................................................................................................................. 55

Managing the File System...............................................................................................................................................57

Enabling Software Features on Devices Using a Command Option..........................................................................58

View Command History.................................................................................................................................................. 59

Contents

3

Upgrading Dell EMC Networking OS............................................................................................................................ 59

Verify Software Images Before Installation...................................................................................................................59

Using HTTP for File Transfers........................................................................................................................................60

4 Management................................................................................................................................................62

Conguring Privilege Levels............................................................................................................................................62

Creating a Custom Privilege Level...........................................................................................................................63

Removing a Command from EXEC Mode.............................................................................................................. 63

Moving a Command from EXEC Privilege Mode to EXEC Mode........................................................................63

Allowing Access to CONFIGURATION Mode Commands....................................................................................63

Allowing Access to Dierent Modes........................................................................................................................63

Applying a Privilege Level to a Username...............................................................................................................65

Applying a Privilege Level to a Terminal Line.......................................................................................................... 65

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

Audit and Security Logs............................................................................................................................................ 66

Conguring Logging Format ...................................................................................................................................68

Display the Logging Buer and the Logging Conguration..................................................................................68

Setting Up a Secure Connection to a Syslog Server.............................................................................................69

Sending System Messages to a Syslog Server...................................................................................................... 70

Track Login Activity..........................................................................................................................................................70

Restrictions for Tracking Login Activity...................................................................................................................70

Conguring Login Activity Tracking......................................................................................................................... 70

Display Login Statistics...............................................................................................................................................71

Limit Concurrent Login Sessions....................................................................................................................................72

Restrictions for Limiting the Number of Concurrent Sessions.............................................................................72

Conguring Concurrent Session Limit.....................................................................................................................73

Enabling the System to Clear Existing Sessions.................................................................................................... 73

Enabling Secured CLI Mode............................................................................................................................................74

Log Messages in the Internal Buer.............................................................................................................................. 74

Conguration Task List for System Log Management...........................................................................................74

Disabling System Logging................................................................................................................................................74

Sending System Messages to a Syslog Server............................................................................................................ 75

Conguring a UNIX System as a Syslog Server.....................................................................................................75

Changing System Logging Settings...............................................................................................................................75

Display the Logging Buer and the Logging Conguration........................................................................................ 76

Conguring a UNIX Logging Facility Level.................................................................................................................... 77

Synchronizing Log Messages......................................................................................................................................... 78

Enabling Timestamp on Syslog Messages.................................................................................................................... 78

File Transfer Services.......................................................................................................................................................79

Conguration Task List for File Transfer Services..................................................................................................79

Enabling the FTP Server........................................................................................................................................... 79

Conguring FTP Server Parameters........................................................................................................................79

Conguring FTP Client Parameters.........................................................................................................................80

Terminal Lines...................................................................................................................................................................80

Denying and Permitting Access to a Terminal Line.................................................................................................81

Conguring Login Authentication for Terminal Lines.............................................................................................82

4

Contents

Setting Timeout for EXEC Privilege Mode................................................................................................................... 83

Using Telnet to get to Another Network Device..........................................................................................................83

Lock CONFIGURATION Mode....................................................................................................................................... 84

Viewing the Conguration Lock Status...................................................................................................................84

LPC Bus Quality Degradation......................................................................................................................................... 84

LBQA (LPC Bus Quality Analyzer) Failure Detection mode..................................................................................85

Reloading the system...................................................................................................................................................... 85

Viewing the Reason for Last System Reboot.............................................................................................................. 86

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

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

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

Conguring 802.1X...........................................................................................................................................................90

Related Conguration Tasks..................................................................................................................................... 90

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

Conguring dot1x Prole .................................................................................................................................................91

Conguring MAC addresses for a do1x Prole..............................................................................................................91

Conguring the Static MAB and MAB Prole ..............................................................................................................91

Conguring Critical VLAN ..............................................................................................................................................92

Enabling 802.1X................................................................................................................................................................ 94

Conguring Request Identity Re-Transmissions...........................................................................................................95

Conguring a Quiet Period after a Failed Authentication..................................................................................... 96

Forcibly Authorizing or Unauthorizing a Port................................................................................................................97

Re-Authenticating a Port................................................................................................................................................ 97

Conguring Timeouts......................................................................................................................................................98

Conguring Dynamic VLAN Assignment with Port Authentication.......................................................................... 99

Guest and Authentication-Fail VLANs.........................................................................................................................100

Conguring a Guest VLAN...................................................................................................................................... 101

Conguring an Authentication-Fail VLAN..............................................................................................................101

6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM).................................. 103

Optimizing CAM Utilization During the Attachment of ACLs to VLANs................................................................. 103

Guidelines for Conguring ACL VLAN Groups........................................................................................................... 104

Conguring ACL VLAN Groups and Conguring FP Blocks for VLAN Parameters...............................................104

Conguring ACL VLAN Groups.............................................................................................................................. 104

Conguring FP Blocks for VLAN Parameters.......................................................................................................105

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

Allocating FP Blocks for VLAN Processes...................................................................................................................107

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

IP Access Control Lists (ACLs)......................................................................................................................................110

CAM Usage.................................................................................................................................................................111

Implementing ACLs on Dell EMC Networking OS................................................................................................. 111

Important Points to Remember.....................................................................................................................................113

Conguration Task List for Route Maps.................................................................................................................113

Conguring Match Routes.......................................................................................................................................115

Contents

5

Conguring Set Conditions...................................................................................................................................... 117

Congure a Route Map for Route Redistribution..................................................................................................118

Congure a Route Map for Route Tagging............................................................................................................ 118

Continue Clause........................................................................................................................................................ 119

IP Fragment Handling..................................................................................................................................................... 119

IP Fragments ACL Examples................................................................................................................................... 119

Layer 4 ACL Rules Examples...................................................................................................................................120

Congure a Standard IP ACL........................................................................................................................................120

Conguring a Standard IP ACL Filter......................................................................................................................121

Congure an Extended IP ACL..................................................................................................................................... 122

Conguring Filters with a Sequence Number....................................................................................................... 122

Conguring Filters Without a Sequence Number.................................................................................................124

Congure Layer 2 and Layer 3 ACLs............................................................................................................................124

Assign an IP ACL to an Interface..................................................................................................................................125

Applying an IP ACL.........................................................................................................................................................125

Counting ACL Hits....................................................................................................................................................126

Congure Ingress ACLs................................................................................................................................................. 126

Congure Egress ACLs.................................................................................................................................................. 127

Applying Egress Layer 3 ACLs (Control-Plane).................................................................................................... 128

IP Prex Lists.................................................................................................................................................................. 128

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

Conguration Task List for Prex Lists.................................................................................................................. 129

ACL Remarks.................................................................................................................................................................. 132

Conguring a Remark.............................................................................................................................................. 132

Deleting a Remark.................................................................................................................................................... 133

ACL Resequencing......................................................................................................................................................... 134

Resequencing an ACL or Prex List.......................................................................................................................134

Route Maps.....................................................................................................................................................................135

Implementation Information.................................................................................................................................... 135

Logging of ACL Processes............................................................................................................................................ 136

Guidelines for Conguring ACL Logging................................................................................................................137

Conguring ACL Logging.........................................................................................................................................137

Flow-Based Monitoring..................................................................................................................................................138

Behavior of Flow-Based Monitoring.......................................................................................................................138

Enabling Flow-Based Monitoring............................................................................................................................139

8 Bidirectional Forwarding Detection (BFD)................................................................................................... 141

How BFD Works.............................................................................................................................................................. 141

BFD Packet Format..................................................................................................................................................142

BFD Sessions............................................................................................................................................................ 143

BFD Three-Way Handshake.................................................................................................................................... 144

Session State Changes............................................................................................................................................146

Important Points to Remember.................................................................................................................................... 146

Congure BFD................................................................................................................................................................ 146

Congure BFD for Physical Ports...........................................................................................................................147

Congure BFD for Static Routes............................................................................................................................148

6

Contents

Congure BFD for IPv6 Static Routes...................................................................................................................152

Congure BFD for OSPF.........................................................................................................................................154

Congure BFD for OSPFv3.....................................................................................................................................157

Congure BFD for IS-IS...........................................................................................................................................160

Congure BFD for BGP........................................................................................................................................... 162

Congure BFD for VRRP.........................................................................................................................................170

Conguring Protocol Liveness................................................................................................................................ 172

9 Border Gateway Protocol (BGP).................................................................................................................173

Border Gateway Protocol version 4 (BGPv4).............................................................................................................173

Autonomous Systems (AS)........................................................................................................................................... 173

AS4 Number Representation.................................................................................................................................. 175

Four-Byte AS Numbers............................................................................................................................................177

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

MBGP for IPv4 MulticastBGP Address Family modelIPv4 and IPv6 address family........................................178

Sessions and Peers.........................................................................................................................................................178

Establish a Session................................................................................................................................................... 178

Implementing BGP global and address family............................................................................................................. 179

BGP global conguration default values................................................................................................................180

BGP Attributes for selecting Best Path.......................................................................................................................180

Best Path Selection Criteria.....................................................................................................................................181

Weight........................................................................................................................................................................182

Local Preference.......................................................................................................................................................183

Multi-Exit Discriminators (MEDs)...........................................................................................................................183

Origin..........................................................................................................................................................................184

AS Path......................................................................................................................................................................185

Next Hop................................................................................................................................................................... 185

Implement BGP with Dell EMC Networking OS.........................................................................................................186

Additional Path (Add-Path) Support......................................................................................................................186

Advertise IGP Cost as MED for Redistributed Routes........................................................................................ 186

Ignore Router-ID in Best-Path Calculation.............................................................................................................187

AS Number Migration...............................................................................................................................................187

BGP4 Management Information Base (MIB)........................................................................................................188

Important Points to Remember.............................................................................................................................. 188

Conguration Information..............................................................................................................................................189

Conguring a basic BGP network................................................................................................................................ 189

Enabling BGP............................................................................................................................................................ 189

Conguring a BGP peer...........................................................................................................................................192

Conguring AS4 Number Representations........................................................................................................... 193

Conguring a BGP VRF address family................................................................................................................. 194

Route-refresh and Soft-reconguration................................................................................................................196

Aggregating Routes..................................................................................................................................................199

Filtering BGP Routes................................................................................................................................................199

Filtering BGP Routes Using Route Maps...............................................................................................................201

Filtering BGP Routes Using AS-PATH Information.............................................................................................. 201

Conguring Peer Groups........................................................................................................................................ 202

Contents

7

Conguring BGP Fast Fall-Over.............................................................................................................................210

Conguring Passive Peering.................................................................................................................................... 211

Maintaining Existing AS Numbers During an AS Migration................................................................................. 212

Allowing an AS Number to Appear in its Own AS Path....................................................................................... 213

Enabling Graceful Restart........................................................................................................................................214

Filtering on an AS-Path Attribute........................................................................................................................... 215

Regular Expressions as Filters.................................................................................................................................216

Redistributing Routes...............................................................................................................................................217

Enabling Additional Paths........................................................................................................................................ 218

Conguring IP Community Lists............................................................................................................................. 218

Conguring an IP Extended Community List........................................................................................................219

Filtering Routes with Community Lists................................................................................................................. 220

Manipulating the COMMUNITY Attribute.............................................................................................................221

Changing MED Attributes.......................................................................................................................................222

Changing the LOCAL_PREFERENCE Attribute..................................................................................................223

Conguring the local System or a Dierent System to be the Next Hop for BGP-Learned Routes.............223

Changing the WEIGHT Attribute........................................................................................................................... 224

Enabling Multipath...................................................................................................................................................224

Route Reectors......................................................................................................................................................225

Conguring BGP Confederations.......................................................................................................................... 226

Enabling Route Flap Dampening............................................................................................................................ 226

Changing BGP Timers.............................................................................................................................................229

Setting the extended timer.................................................................................................................................... 229

Enabling or disabling BGP neighbors.....................................................................................................................230

Route Map Continue................................................................................................................................................ 231

Enabling MBGP Congurations....................................................................................................................................232

MBGP support for IPv6................................................................................................................................................232

Conguring IPv6 MBGP between peers.....................................................................................................................232

Example-Conguring IPv4 and IPv6 neighbors......................................................................................................... 233

Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor............................................... 235

BGP Regular Expression Optimization........................................................................................................................ 237

Debugging BGP..............................................................................................................................................................237

Storing Last and Bad PDUs....................................................................................................................................238

Capturing PDUs....................................................................................................................................................... 239

PDU Counters.......................................................................................................................................................... 240

10 Content Addressable Memory (CAM)....................................................................................................... 241

CAM Allocation............................................................................................................................................................... 241

Test CAM Usage............................................................................................................................................................ 243

View CAM-ACL Settings.............................................................................................................................................. 243

View CAM Usage...........................................................................................................................................................245

Conguring CAM Threshold and Silence Period........................................................................................................245

Setting CAM Threshold and Silence Period......................................................................................................... 245

CAM Optimization......................................................................................................................................................... 246

Troubleshoot CAM Proling..........................................................................................................................................246

QoS CAM Region Limitation...................................................................................................................................246

8

Contents

11 Control Plane Policing (CoPP).................................................................................................................. 248

Congure Control Plane Policing................................................................................................................................. 249

Conguring CoPP for Protocols............................................................................................................................ 250

Conguring CoPP for CPU Queues...................................................................................................................... 252

CoPP for OSPFv3 Packets.....................................................................................................................................253

Conguring CoPP for OSPFv3.............................................................................................................................. 256

Displaying CoPP Conguration .............................................................................................................................256

12 Dynamic Host Conguration Protocol (DHCP).........................................................................................259

DHCP Packet Format and Options............................................................................................................................. 259

Assign an IP Address using DHCP................................................................................................................................261

Implementation Information..........................................................................................................................................262

Congure the System to be a DHCP Server..............................................................................................................262

Conguring the Server for Automatic Address Allocation..................................................................................263

Specifying a Default Gateway................................................................................................................................ 264

Congure a Method of Hostname Resolution..................................................................................................... 265

Using DNS for Address Resolution........................................................................................................................265

Using NetBIOS WINS for Address Resolution..................................................................................................... 265

Creating Manual Binding Entries............................................................................................................................265

Debugging the DHCP Server.................................................................................................................................266

Using DHCP Clear Commands.............................................................................................................................. 266

Congure the System to be a Relay Agent................................................................................................................ 266

Congure the System to be a DHCP Client............................................................................................................... 268

Conguring the DHCP Client System...................................................................................................................268

DHCP Client on a Management Interface............................................................................................................269

DHCP Client Operation with Other Features....................................................................................................... 270

DHCP Relay When DHCP Server and Client are in Dierent VRFs......................................................................... 271

Conguring Route Leaking between VRFs on DHCP Relay Agent.................................................................... 271

Congure the System for User Port Stacking (Option 230)....................................................................................272

Congure Secure DHCP............................................................................................................................................... 272

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

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

Drop DHCP Packets on Snooped VLANs Only.................................................................................................... 278

Dynamic ARP Inspection.........................................................................................................................................278

Conguring Dynamic ARP Inspection....................................................................................................................279

Source Address Validation............................................................................................................................................ 280

Enabling IP Source Address Validation..................................................................................................................280

DHCP MAC Source Address Validation................................................................................................................. 281

Enabling IP+MAC Source Address Validation........................................................................................................281

Viewing the Number of SAV Dropped Packets....................................................................................................282

Clearing the Number of SAV Dropped Packets................................................................................................... 282

13 Equal Cost Multi-Path (ECMP)................................................................................................................ 283

ECMP for Flow-Based Anity.....................................................................................................................................283

Conguring the Hash Algorithm............................................................................................................................ 283

Contents

9

Enabling Deterministic ECMP Next Hop.............................................................................................................. 283

Conguring the Hash Algorithm Seed.................................................................................................................. 284

Link Bundle Monitoring................................................................................................................................................. 284

Managing ECMP Group Paths...............................................................................................................................285

Creating an ECMP Group Bundle..........................................................................................................................285

Modifying the ECMP Group Threshold.................................................................................................................285

14 FIPS Cryptography................................................................................................................................... 287

Conguration Tasks........................................................................................................................................................287

Preparing the System....................................................................................................................................................287

Enabling FIPS Mode...................................................................................................................................................... 288

Generating Host-Keys...................................................................................................................................................288

Monitoring FIPS Mode Status......................................................................................................................................288

Disabling FIPS Mode..................................................................................................................................................... 289

15 Force10 Resilient Ring Protocol (FRRP)...................................................................................................290

Protocol Overview.........................................................................................................................................................290

Ring Status................................................................................................................................................................291

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

Important FRRP Points...........................................................................................................................................292

Important FRRP Concepts..................................................................................................................................... 293

Implementing FRRP.......................................................................................................................................................294

FRRP Conguration...................................................................................................................................................... 294

Creating the FRRP Group.......................................................................................................................................294

Conguring the Control VLAN...............................................................................................................................295

Conguring and Adding the Member VLANs...................................................................................................... 296

Setting the FRRP Timers........................................................................................................................................297

Clearing the FRRP Counters.................................................................................................................................. 297

Viewing the FRRP Conguration........................................................................................................................... 297

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

Troubleshooting FRRP.................................................................................................................................................. 298

Conguration Checks..............................................................................................................................................298

Sample Conguration and Topology............................................................................................................................298

FRRP Support on VLT...................................................................................................................................................299

Example Scenario.................................................................................................................................................... 300

Important Points to Remember.............................................................................................................................. 301

16 GARP VLAN Registration Protocol (GVRP)..............................................................................................302

Important Points to Remember................................................................................................................................... 302

Congure GVRP............................................................................................................................................................ 303

Related Conguration Tasks...................................................................................................................................303

Enabling GVRP Globally................................................................................................................................................ 304

Enabling GVRP on a Layer 2 Interface........................................................................................................................304

Congure GVRP Registration...................................................................................................................................... 304

Congure a GARP Timer.............................................................................................................................................. 305

RPM Redundancy..........................................................................................................................................................305

10

Contents

17 High Availability (HA)................................................................................................................................307

Component Redundancy.............................................................................................................................................. 307

Automatic and Manual Stack Unit Failover...........................................................................................................307

Synchronization between Management and Standby Units..............................................................................308

Forcing a Stack Unit Failover................................................................................................................................. 308

Specifying an Auto-Failover Limit..........................................................................................................................309

Disabling Auto-Reboot............................................................................................................................................ 309

Pre-Conguring a Stack Unit Slot............................................................................................................................... 309

Removing a Provisioned Logical Stack Unit............................................................................................................... 309

Hitless Behavior............................................................................................................................................................. 309

Graceful Restart............................................................................................................................................................. 310

Software Resiliency........................................................................................................................................................310

Software Component Health Monitoring..............................................................................................................310

System Health Monitoring.......................................................................................................................................310

Failure and Event Logging........................................................................................................................................ 311

Hot-Lock Behavior.......................................................................................................................................................... 311

18 Internet Group Management Protocol (IGMP).......................................................................................... 312

IGMP Implementation Information............................................................................................................................... 312

IGMP Protocol Overview...............................................................................................................................................312

IGMP Version 2.........................................................................................................................................................312

IGMP Version 3.........................................................................................................................................................314

Congure IGMP.............................................................................................................................................................. 317

Related Conguration Tasks....................................................................................................................................317

Viewing IGMP Enabled Interfaces................................................................................................................................318

Selecting an IGMP Version............................................................................................................................................318

Viewing IGMP Groups....................................................................................................................................................319

Adjusting Timers............................................................................................................................................................. 319

Adjusting Query and Response Timers..................................................................................................................319

Preventing a Host from Joining a Group.................................................................................................................... 320

Enabling IGMP Immediate-Leave.................................................................................................................................323

IGMP Snooping..............................................................................................................................................................323

IGMP Snooping Implementation Information....................................................................................................... 323

Conguring IGMP Snooping...................................................................................................................................323

Removing a Group-Port Association..................................................................................................................... 324

Disabling Multicast Flooding...................................................................................................................................324

Specifying a Port as Connected to a Multicast Router...................................................................................... 325

Conguring the Switch as Querier........................................................................................................................ 325

Fast Convergence after MSTP Topology Changes...................................................................................................326

Egress Interface Selection (EIS) for HTTP and IGMP Applications........................................................................326

Protocol Separation.................................................................................................................................................326

Enabling and Disabling Management Egress Interface Selection...................................................................... 327

Handling of Management Route Conguration................................................................................................... 328

Handling of Switch-Initiated Trac....................................................................................................................... 329

Handling of Switch-Destined Trac......................................................................................................................329

Contents

11

Handling of Transit Trac (Trac Separation).................................................................................................... 330

Mapping of Management Applications and Trac Type.....................................................................................330

Behavior of Various Applications for Switch-Initiated Trac .............................................................................331

Behavior of Various Applications for Switch-Destined Trac ...........................................................................332

Interworking of EIS With Various Applications.....................................................................................................333

Designating a Multicast Router Interface................................................................................................................... 333

19 Interfaces.................................................................................................................................................335

Basic Interface Conguration.......................................................................................................................................335

Advanced Interface Conguration...............................................................................................................................335

Interface Types...............................................................................................................................................................336

View Basic Interface Information.................................................................................................................................336

Resetting an Interface to its Factory Default State...................................................................................................338

Enabling a Physical Interface........................................................................................................................................339

Enabling Energy Ecient Ethernet..............................................................................................................................339

View EEE Information................................................................................................................................................... 339

Clear EEE Counters.......................................................................................................................................................344

Physical Interfaces.........................................................................................................................................................344

Conguration Task List for Physical Interfaces....................................................................................................345

Overview of Layer Modes...................................................................................................................................... 345

Conguring Layer 2 (Data Link) Mode..................................................................................................................345

Conguring Layer 2 (Interface) Mode.................................................................................................................. 346

Conguring Layer 3 (Network) Mode...................................................................................................................346

Conguring Layer 3 (Interface) Mode...................................................................................................................347

Automatic recovery of an Err-disabled interface....................................................................................................... 347

Conguring an automatic recovery for an Err-disabled interface......................................................................348

Egress Interface Selection (EIS)..................................................................................................................................348

Important Points to Remember............................................................................................................................. 349

Conguring EIS........................................................................................................................................................ 349

Management Interfaces................................................................................................................................................349

Conguring Management Interfaces.....................................................................................................................349

Conguring a Management Interface on an Ethernet Port................................................................................ 351

VLAN Interfaces............................................................................................................................................................ 352

Loopback Interfaces......................................................................................................................................................352

Null Interfaces................................................................................................................................................................ 353

Port Channel Interfaces................................................................................................................................................353

Port Channel Denition and Standards.................................................................................................................353

Port Channel Benets.............................................................................................................................................353

Port Channel Implementation.................................................................................................................................354

Interfaces in Port Channels.................................................................................................................................... 354

Conguration Tasks for Port Channel Interfaces.................................................................................................354

Creating a Port Channel......................................................................................................................................... 355

Adding a Physical Interface to a Port Channel.....................................................................................................355

Reassigning an Interface to a New Port Channel................................................................................................ 357

Conguring the Minimum Oper Up Links in a Port Channel.............................................................................. 358

Adding or Removing a Port Channel from a VLAN............................................................................................. 358

12

Contents

Assigning an IP Address to a Port Channel.......................................................................................................... 359

Deleting or Disabling a Port Channel.....................................................................................................................359

Load Balancing Through Port Channels............................................................................................................... 360

Changing the Hash Algorithm................................................................................................................................360

Bulk Conguration..........................................................................................................................................................361

Interface Range........................................................................................................................................................ 361

Bulk Conguration Examples..................................................................................................................................362

Dening Interface Range Macros................................................................................................................................ 363

Dene the Interface Range.................................................................................................................................... 363

Choosing an Interface-Range Macro.................................................................................................................... 363

Monitoring and Maintaining Interfaces....................................................................................................................... 364

Maintenance Using TDR.........................................................................................................................................365

Conguring wavelength for 10–Gigabit SFP+ optics................................................................................................365

Link Dampening..............................................................................................................................................................366

Important Points to Remember............................................................................................................................. 366

Conguration Example of Link Dampening.......................................................................................................... 366

Enabling Link Dampening........................................................................................................................................369

Link Bundle Monitoring..................................................................................................................................................370

Using Ethernet Pause Frames for Flow Control......................................................................................................... 371

Enabling Pause Frames............................................................................................................................................ 371

Congure the MTU Size on an Interface.................................................................................................................... 372

Port-Pipes.......................................................................................................................................................................373

Auto-Negotiation on Ethernet Interfaces................................................................................................................... 373

Setting the Speed of Ethernet Interfaces.............................................................................................................373

Set Auto-Negotiation Options................................................................................................................................374

View Advanced Interface Information.........................................................................................................................375

Conguring the Interface Sampling Size...............................................................................................................376

Conguring the Trac Sampling Size Globally...........................................................................................................377

Dynamic Counters..........................................................................................................................................................378

Clearing Interface Counters....................................................................................................................................379

Discard Counters............................................................................................................................................................379

Display discard counters......................................................................................................................................... 380

20 Internet Protocol Security (IPSec).......................................................................................................... 382

Conguring IPSec .........................................................................................................................................................382

21 IPv4 Routing.............................................................................................................................................384

IP Addresses...................................................................................................................................................................385

Implementation Information....................................................................................................................................385

Conguration Tasks for IP Addresses......................................................................................................................... 385

Assigning IP Addresses to an Interface.......................................................................................................................385

Conguring Static Routes............................................................................................................................................ 386

Congure Static Routes for the Management Interface.......................................................................................... 387

IPv4 Path MTU Discovery Overview.......................................................................................................................... 388

Packet handling during MTU mismatch................................................................................................................388

Using the Congured Source IP Address in ICMP Messages..................................................................................388

Contents

13

Conguring the ICMP Source Interface............................................................................................................... 388

Conguring the Duration to Establish a TCP Connection........................................................................................ 389

Enabling Directed Broadcast........................................................................................................................................ 389

Resolution of Host Names............................................................................................................................................389

Enabling Dynamic Resolution of Host Names............................................................................................................390

Specifying the Local System Domain and a List of Domains................................................................................... 390

Conguring DNS with Traceroute................................................................................................................................ 391

ARP.................................................................................................................................................................................. 391

Conguration Tasks for ARP........................................................................................................................................ 392

Conguring Static ARP Entries....................................................................................................................................392

Enabling Proxy ARP.......................................................................................................................................................392

Clearing ARP Cache......................................................................................................................................................393

ARP Learning via Gratuitous ARP................................................................................................................................393

Enabling ARP Learning via Gratuitous ARP................................................................................................................393

ARP Learning via ARP Request................................................................................................................................... 393

Conguring ARP Retries...............................................................................................................................................394

ICMP............................................................................................................................................................................... 395

Conguration Tasks for ICMP......................................................................................................................................395

Enabling ICMP Unreachable Messages...................................................................................................................... 395

UDP Helper.....................................................................................................................................................................395

Congure UDP Helper............................................................................................................................................ 395

Important Points to Remember............................................................................................................................. 396

Enabling UDP Helper.....................................................................................................................................................396

Congurations Using UDP Helper............................................................................................................................... 396

UDP Helper with Broadcast-All Addresses.................................................................................................................396

UDP Helper with Subnet Broadcast Addresses.........................................................................................................397

UDP Helper with Congured Broadcast Addresses..................................................................................................398

UDP Helper with No Congured Broadcast Addresses............................................................................................398

Troubleshooting UDP Helper........................................................................................................................................398

22 IPv6 Routing............................................................................................................................................400

Protocol Overview.........................................................................................................................................................400

Extended Address Space........................................................................................................................................ 401

Stateless Autoconguration....................................................................................................................................401

IPv6 Headers.............................................................................................................................................................401

IPv6 Header Fields...................................................................................................................................................402

Extension Header Fields......................................................................................................................................... 404

Addressing................................................................................................................................................................405

Implementing IPv6 with Dell EMC Networking OS...................................................................................................406

ICMPv6........................................................................................................................................................................... 407

Path MTU discovery..................................................................................................................................................... 408

IPv6 Neighbor Discovery..............................................................................................................................................408

IPv6 Neighbor Discovery of MTU Packets.......................................................................................................... 409

Conguration Task List for IPv6 RDNSS.................................................................................................................... 409

Conguring the IPv6 Recursive DNS Server....................................................................................................... 409

Debugging IPv6 RDNSS Information Sent to the Host ......................................................................................410

14

Contents

Displaying IPv6 RDNSS Information....................................................................................................................... 411

Secure Shell (SSH) Over an IPv6 Transport................................................................................................................411

Conguration Tasks for IPv6.........................................................................................................................................412

Adjusting Your CAM-Prole.....................................................................................................................................412

Assigning an IPv6 Address to an Interface............................................................................................................413

Assigning a Static IPv6 Route.................................................................................................................................413

Conguring Telnet with IPv6...................................................................................................................................414

SNMP over IPv6.......................................................................................................................................................414

Displaying IPv6 Information.....................................................................................................................................414

Displaying an IPv6 Interface Information...............................................................................................................415

Showing IPv6 Routes...............................................................................................................................................415

Showing the Running-Conguration for an Interface..........................................................................................417

Clearing IPv6 Routes................................................................................................................................................417

Disabling ND Entry Timeout.................................................................................................................................... 417

Conguring IPv6 RA Guard...........................................................................................................................................418

Conguring IPv6 RA Guard on an Interface..........................................................................................................419

Monitoring IPv6 RA Guard......................................................................................................................................420

23 Intermediate System to Intermediate System........................................................................................... 421

IS-IS Protocol Overview................................................................................................................................................ 421

IS-IS Addressing..............................................................................................................................................................421

Multi-Topology IS-IS...................................................................................................................................................... 422

Transition Mode........................................................................................................................................................422

Interface Support.....................................................................................................................................................423

Adjacencies...............................................................................................................................................................423

Graceful Restart.............................................................................................................................................................423

Timers........................................................................................................................................................................423

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

Conguration Information.............................................................................................................................................424

Conguration Tasks for IS-IS..................................................................................................................................425

Conguring the Distance of a Route.....................................................................................................................432

Changing the IS-Type.............................................................................................................................................. 433

Redistributing IPv4 Routes.....................................................................................................................................435

Redistributing IPv6 Routes.....................................................................................................................................436

Conguring Authentication Passwords................................................................................................................. 437

Setting the Overload Bit......................................................................................................................................... 437

Debugging IS-IS....................................................................................................................................................... 438

IS-IS Metric Styles.........................................................................................................................................................439

Congure Metric Values............................................................................................................................................... 439

Maximum Values in the Routing Table.................................................................................................................. 439

Change the IS-IS Metric Style in One Level Only................................................................................................439

Leaks from One Level to Another...........................................................................................................................441

Sample Congurations.................................................................................................................................................. 442

24 Link Aggregation Control Protocol (LACP)...............................................................................................444

Introduction to Dynamic LAGs and LACP...................................................................................................................444

Contents

15

Important Points to Remember..............................................................................................................................444

LACP Modes............................................................................................................................................................ 445

Conguring LACP Commands...............................................................................................................................445

LACP Conguration Tasks............................................................................................................................................ 446

Creating a LAG.........................................................................................................................................................446

Conguring the LAG Interfaces as Dynamic........................................................................................................ 446

Setting the LACP Long Timeout............................................................................................................................447

Monitoring and Debugging LACP.......................................................................................................................... 447

Shared LAG State Tracking.......................................................................................................................................... 448

Conguring Shared LAG State Tracking............................................................................................................... 448

Important Points about Shared LAG State Tracking...........................................................................................450

LACP Basic Conguration Example............................................................................................................................ 450

Congure a LAG on ALPHA................................................................................................................................... 450

25 Layer 2.................................................................................................................................................... 459

Manage the MAC Address Table................................................................................................................................. 459

Clearing the MAC Address Table........................................................................................................................... 459

Setting the Aging Time for Dynamic Entries........................................................................................................459

Conguring a Static MAC Address........................................................................................................................460

Displaying the MAC Address Table........................................................................................................................460

MAC Learning Limit.......................................................................................................................................................460

Setting the MAC Learning Limit............................................................................................................................. 461

mac learning-limit Dynamic..................................................................................................................................... 461

mac learning-limit mac-address-sticky.................................................................................................................. 461

mac learning-limit station-move............................................................................................................................ 462

mac learning-limit no-station-move.......................................................................................................................462

Learning Limit Violation Actions.............................................................................................................................462

Setting Station Move Violation Actions................................................................................................................ 463

Recovering from Learning Limit and Station Move Violations........................................................................... 463

Disabling MAC Address Learning on the System.................................................................................................464

NIC Teaming................................................................................................................................................................... 464

Congure Redundant Pairs.......................................................................................................................................... 465

Important Points about Conguring Redundant Pairs.........................................................................................467

Far-End Failure Detection.............................................................................................................................................468

FEFD State Changes...............................................................................................................................................469

Conguring FEFD.................................................................................................................................................... 470

Enabling FEFD on an Interface...............................................................................................................................470

Debugging FEFD.......................................................................................................................................................471

26 Link Layer Discovery Protocol (LLDP)......................................................................................................473

802.1AB (LLDP) Overview............................................................................................................................................473

Protocol Data Units..................................................................................................................................................473

Optional TLVs................................................................................................................................................................. 474

Management TLVs...................................................................................................................................................474

TIA-1057 (LLDP-MED) Overview.................................................................................................................................476

TIA Organizationally Specic TLVs........................................................................................................................ 476

16

Contents

Congure LLDP............................................................................................................................................................. 480

Related Conguration Tasks...................................................................................................................................480

Important Points to Remember............................................................................................................................. 480

LLDP Compatibility...................................................................................................................................................481

CONFIGURATION versus INTERFACE Congurations............................................................................................. 481

Enabling LLDP.................................................................................................................................................................481

Disabling and Undoing LLDP.................................................................................................................................. 482

Enabling LLDP on Management Ports........................................................................................................................482

Disabling and Undoing LLDP on Management Ports.......................................................................................... 482

Advertising TLVs............................................................................................................................................................ 482

Storing and Viewing Unrecognized LLDP TLVs.........................................................................................................484

Reserved Unrecognized LLDP TLVs..................................................................................................................... 484

Organizational Specic Unrecognized LLDP TLVs.............................................................................................. 484

Viewing Unrecognized LLDP TLVs........................................................................................................................ 484

Viewing the LLDP Conguration................................................................................................................................. 485

Viewing Information Advertised by Adjacent LLDP Neighbors................................................................................485

Examples of Viewing Information Advertised by Neighbors.............................................................................. 485

Conguring LLDPDU Intervals..................................................................................................................................... 487

Conguring LLDP Notication Interval....................................................................................................................... 488

Conguring Transmit and Receive Mode....................................................................................................................488

Conguring the Time to Live Value............................................................................................................................. 489

Debugging LLDP............................................................................................................................................................490

Relevant Management Objects.................................................................................................................................... 491

27 Microsoft Network Load Balancing.......................................................................................................... 496

NLB Unicast Mode Scenario........................................................................................................................................496

NLB Multicast Mode Scenario.....................................................................................................................................496

Limitations of the NLB Feature.................................................................................................................................... 497

Microsoft Clustering......................................................................................................................................................497

Enable and Disable VLAN Flooding .............................................................................................................................497

Conguring a Switch for NLB ..................................................................................................................................... 497

Enabling a Switch for Multicast NLB.................................................................................................................... 498

28 Multicast Source Discovery Protocol (MSDP)......................................................................................... 499

Protocol Overview.........................................................................................................................................................499

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

Implementation Information.......................................................................................................................................... 501

Congure Multicast Source Discovery Protocol.........................................................................................................501

Related Conguration Tasks....................................................................................................................................501

Enable MSDP.................................................................................................................................................................505

Manage the Source-Active Cache..............................................................................................................................506

Viewing the Source-Active Cache........................................................................................................................ 506

Limiting the Source-Active Cache.........................................................................................................................506

Clearing the Source-Active Cache........................................................................................................................ 507

Enabling the Rejected Source-Active Cache....................................................................................................... 507

Contents

17

Accept Source-Active Messages that Fail the RFP Check......................................................................................507

Specifying Source-Active Messages........................................................................................................................... 510

Limiting the Source-Active Messages from a Peer.................................................................................................... 511

Preventing MSDP from Caching a Local Source........................................................................................................ 511

Preventing MSDP from Caching a Remote Source................................................................................................... 512

Preventing MSDP from Advertising a Local Source.................................................................................................. 512

Logging Changes in Peership States............................................................................................................................513

Terminating a Peership...................................................................................................................................................513

Clearing Peer Statistics..................................................................................................................................................514

Debugging MSDP...........................................................................................................................................................514

MSDP with Anycast RP.................................................................................................................................................515

Conguring Anycast RP................................................................................................................................................ 516

Reducing Source-Active Message Flooding..........................................................................................................517

Specifying the RP Address Used in SA Messages............................................................................................... 517

MSDP Sample Congurations...................................................................................................................................... 519

29 Multicast Listener Discovery Protocol..................................................................................................... 522

MLD Version 1................................................................................................................................................................ 522

MLD Querier Router......................................................................................................................................................522

Joining a Multicast Group.............................................................................................................................................523

Leaving a Multicast Group............................................................................................................................................523

MLD version 2................................................................................................................................................................523

MLD timers.....................................................................................................................................................................525

Reducing Host Response Burstiness.................................................................................................................... 526

Clearing MLD groups.....................................................................................................................................................526

Debugging MLD.............................................................................................................................................................526

Explicit Tracking............................................................................................................................................................. 526

Reducing Leave Latency...............................................................................................................................................526

Displaying MLD groups table........................................................................................................................................ 527

Displaying MLD Interfaces............................................................................................................................................ 527

MLD Snooping................................................................................................................................................................527

Enable MLD Snooping.............................................................................................................................................527

Disable MLD Snooping............................................................................................................................................528

Congure the switch as a querier..........................................................................................................................528

Specify port as connected to multicast router.................................................................................................... 528

Enable Snooping Explicit Tracking......................................................................................................................... 529

Display the MLD Snooping Table........................................................................................................................... 529

30 Multiple Spanning Tree Protocol (MSTP)................................................................................................ 530

Protocol Overview.........................................................................................................................................................530

Spanning Tree Variations............................................................................................................................................... 531

Implementation Information.................................................................................................................................... 531

Congure Multiple Spanning Tree Protocol.................................................................................................................531

Related Conguration Tasks...................................................................................................................................532

Enable Multiple Spanning Tree Globally...................................................................................................................... 532

Adding and Removing Interfaces.................................................................................................................................532

18

Contents

Creating Multiple Spanning Tree Instances................................................................................................................ 533

Inuencing MSTP Root Selection................................................................................................................................534

Interoperate with Non-Dell Bridges.............................................................................................................................534

Changing the Region Name or Revision..................................................................................................................... 535

Modifying Global Parameters.......................................................................................................................................535

Modifying the Interface Parameters........................................................................................................................... 536

Conguring an EdgePort.............................................................................................................................................. 537

Flush MAC Addresses after a Topology Change....................................................................................................... 538

MSTP Sample Congurations......................................................................................................................................538

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

CongurationSFTOS Example Running-Conguration.......................................................................................539

Debugging and Verifying MSTP Congurations........................................................................................................ 542

31 Multicast Features....................................................................................................................................544

Enabling IP Multicast.....................................................................................................................................................544

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

Multicast Policies...........................................................................................................................................................545

IPv4 Multicast Policies............................................................................................................................................545

Understanding Multicast Traceroute (mtrace).......................................................................................................... 552

Important Points to Remember............................................................................................................................. 553

Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 553

Supported Error Codes.................................................................................................................................................554

mtrace Scenarios...........................................................................................................................................................555

32 Object Tracking........................................................................................................................................ 561

Object Tracking Overview.............................................................................................................................................561

Track Layer 2 Interfaces..........................................................................................................................................562

Track Layer 3 Interfaces..........................................................................................................................................562

Track IPv4 and IPv6 Routes................................................................................................................................... 563

Set Tracking Delays................................................................................................................................................. 564

VRRP Object Tracking............................................................................................................................................ 564

Object Tracking Conguration..................................................................................................................................... 564

Tracking a Layer 2 Interface................................................................................................................................... 564

Tracking a Layer 3 Interface................................................................................................................................... 565

Track an IPv4/IPv6 Route...................................................................................................................................... 567

Displaying Tracked Objects...........................................................................................................................................570

33 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................572

Protocol Overview......................................................................................................................................................... 572

Autonomous System (AS) Areas............................................................................................................................572

Area Types................................................................................................................................................................ 573

Networks and Neighbors........................................................................................................................................ 574

Router Types.............................................................................................................................................................574

Designated and Backup Designated Routers....................................................................................................... 576

Link-State Advertisements (LSAs)........................................................................................................................ 576

Router Priority and Cost......................................................................................................................................... 577

Contents

19

OSPF with Dell EMC Networking OS......................................................................................................................... 578

Graceful Restart.......................................................................................................................................................579

Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................580

Multi-Process OSPFv2 with VRF..........................................................................................................................580

OSPF ACK Packing................................................................................................................................................. 580

Setting OSPF Adjacency with Cisco Routers...................................................................................................... 580

Conguration Information..............................................................................................................................................581

Conguration Task List for OSPFv2 (OSPF for IPv4)......................................................................................... 581

OSPFv3 NSSA............................................................................................................................................................... 595

NSSA Options..........................................................................................................................................................595

Conguration Task List for OSPFv3 (OSPF for IPv6).............................................................................................. 596

Enabling IPv6 Unicast Routing...............................................................................................................................596

Applying cost for OSPFv3...................................................................................................................................... 597

Assigning IPv6 Addresses on an Interface............................................................................................................597

Assigning Area ID on an Interface..........................................................................................................................597

Assigning OSPFv3 Process ID and Router ID Globally........................................................................................598

Assigning OSPFv3 Process ID and Router ID to a VRF......................................................................................598

Conguring Stub Areas...........................................................................................................................................599

Conguring Passive-Interface................................................................................................................................599

Redistributing Routes..............................................................................................................................................599

Conguring a Default Route...................................................................................................................................600

Enabling OSPFv3 Graceful Restart.......................................................................................................................600

OSPFv3 Authentication Using IPsec.....................................................................................................................602

Troubleshooting OSPFv3........................................................................................................................................608

34 Policy-based Routing (PBR).....................................................................................................................610

Overview......................................................................................................................................................................... 610

Implementing PBR.......................................................................................................................................................... 611

Conguration Task List for Policy-based Routing....................................................................................................... 611

PBR Exceptions (Permit).........................................................................................................................................611

Create a Redirect List.............................................................................................................................................. 612

Create a Rule for a Redirect-list............................................................................................................................. 612

Apply a Redirect-list to an Interface using a Redirect-group.............................................................................. 614

Sample Conguration.....................................................................................................................................................616

Create the Redirect-List GOLDAssign Redirect-List GOLD to Interface 2/11View Redirect-List GOLD...... 617

35 PIM Sparse-Mode (PIM-SM).................................................................................................................. 620

Implementation Information..........................................................................................................................................620

Protocol Overview.........................................................................................................................................................620

Requesting Multicast Trac...................................................................................................................................620

Refuse Multicast Trac...........................................................................................................................................621

Send Multicast Trac..............................................................................................................................................621

Conguring PIM-SM......................................................................................................................................................621

Related Conguration Tasks...................................................................................................................................622

Enable PIM-SM..............................................................................................................................................................622

Conguring S,G Expiry Timers..................................................................................................................................... 624

20

Contents

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