Dell PowerSwitch S5048F-ON Owner's manual

Dell EMC Networking OS Conguration Guide for

the S5048F–ON System

9.14.1.5

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.

may be trademarks of their respective owners.

2019 - 05

Rev. A00

Contents

1 About this Guide...........................................................................................................................................35

Audience........................................................................................................................................................................... 35

Conventions......................................................................................................................................................................35

Related Documents......................................................................................................................................................... 35

2 Conguration Fundamentals........................................................................................................................ 36

Accessing the Command Line........................................................................................................................................36

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

Navigating CLI Modes............................................................................................................................................... 38

The do Command............................................................................................................................................................. 41

Undoing Commands.........................................................................................................................................................41

Obtaining Help..................................................................................................................................................................42

Entering and Editing Commands....................................................................................................................................42

Command History............................................................................................................................................................ 43

Filtering show Command Outputs................................................................................................................................. 43

Example of the grep Keyword.................................................................................................................................. 44

Multiple Users in Conguration Mode...........................................................................................................................45

Conguring alias command.............................................................................................................................................45

Viewing alias conguration....................................................................................................................................... 45

3 Getting Started............................................................................................................................................47

Console Access................................................................................................................................................................48

Serial Console.............................................................................................................................................................48

Micro USB-B Access.................................................................................................................................................49

Default Conguration...................................................................................................................................................... 50

Conguring a Host Name............................................................................................................................................... 50

Accessing the System Remotely................................................................................................................................... 50

Accessing the System Remotely............................................................................................................................. 50

Congure the Management Port IP Address.........................................................................................................50

Congure a Management Route...............................................................................................................................51

Conguring a Username and Password...................................................................................................................51

Conguring the Enable Password..................................................................................................................................52

Conguration File Management.....................................................................................................................................52

Copy Files to and from the System......................................................................................................................... 52

Mounting an NFS File System..................................................................................................................................54

Save the Running-Conguration............................................................................................................................. 55

Congure the Overload Bit for a Startup Scenario............................................................................................... 56

Viewing Files...............................................................................................................................................................56

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

View Command History.................................................................................................................................................. 58

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

Using HTTP for File Transfers........................................................................................................................................ 59

Contents

3

Verify Software Images Before Installation...................................................................................................................60

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

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

Creating a Custom Privilege Level...........................................................................................................................62

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 ...................................................................................................................................67

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

Log Messages in the Internal Buer..............................................................................................................................69

Conguration Task List for System Log Management..........................................................................................69

Disabling System Logging............................................................................................................................................... 69

Sending System Messages to a Syslog Server............................................................................................................69

Conguring a UNIX System as a Syslog Server.....................................................................................................69

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.....................................................................................................................72

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

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

Changing System Logging Settings............................................................................................................................... 74

Display the Logging Buer and the Logging Conguration........................................................................................75

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

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

Enabling Timestamp on Syslog Messages.................................................................................................................... 79

File Transfer Services...................................................................................................................................................... 80

Conguration Task List for File Transfer Services..................................................................................................80

Enabling the FTP Server...........................................................................................................................................80

Conguring FTP Server Parameters........................................................................................................................ 81

Conguring FTP Client Parameters..........................................................................................................................81

Terminal Lines................................................................................................................................................................... 82

Denying and Permitting Access to a Terminal Line................................................................................................82

Conguring Login Authentication for Terminal Lines.............................................................................................83

Setting Timeout for EXEC Privilege Mode................................................................................................................... 84

Using Telnet to get to Another Network Device..........................................................................................................84

Lock CONFIGURATION Mode.......................................................................................................................................85

Viewing the Conguration Lock Status...................................................................................................................85

4

Contents

Reloading the system...................................................................................................................................................... 86

Restoring the Factory Default Settings........................................................................................................................ 86

Important Points to Remember................................................................................................................................87

Restoring Factory Default Environment Variables..................................................................................................87

5 802.1X..........................................................................................................................................................88

Port-Authentication Process..........................................................................................................................................90

EAP over RADIUS......................................................................................................................................................90

Conguring 802.1X........................................................................................................................................................... 91

Related Conguration Tasks......................................................................................................................................91

Important Points to Remember...................................................................................................................................... 91

Enabling 802.1X................................................................................................................................................................ 92

Conguring dot1x Prole ................................................................................................................................................93

Conguring the Static MAB and MAB Prole .............................................................................................................94

Conguring Critical VLAN ..............................................................................................................................................94

Conguring MAC addresses for a do1x Prole.............................................................................................................95

Conguring Request Identity Re-Transmissions...........................................................................................................96

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

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

Re-Authenticating a Port................................................................................................................................................98

Conguring Timeouts......................................................................................................................................................99

Conguring Dynamic VLAN Assignment with Port Authentication.........................................................................100

Guest and Authentication-Fail VLANs..........................................................................................................................101

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.................................................................................................................. 108

ACL Optimization to Increase Number of Supported IPv4 ACLs.............................................................................109

Restrictions for ACL Optimization..........................................................................................................................109

Optimizing ACL for More Number of IPv4 ACL Rules.........................................................................................109

7 Access Control Lists (ACLs)........................................................................................................................ 111

IP Access Control Lists (ACLs)......................................................................................................................................112

CAM Usage................................................................................................................................................................112

Implementing ACLs on Dell EMC Networking OS.................................................................................................114

Congure ACL Range Proles....................................................................................................................................... 115

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

Conguration Task List for Route Maps.................................................................................................................116

Conguring Match Routes.......................................................................................................................................119

Contents

5

Conguring Set Conditions..................................................................................................................................... 120

Congure a Route Map for Route Redistribution..................................................................................................121

Congure a Route Map for Route Tagging............................................................................................................ 121

Continue Clause........................................................................................................................................................122

IP Fragment Handling.................................................................................................................................................... 122

IP Fragments ACL Examples...................................................................................................................................122

Layer 4 ACL Rules Examples...................................................................................................................................123

Congure a Standard IP ACL........................................................................................................................................ 124

Conguring a Standard IP ACL Filter..................................................................................................................... 125

Congure an Extended IP ACL..................................................................................................................................... 125

Conguring Filters with a Sequence Number....................................................................................................... 126

Conguring Filters Without a Sequence Number.................................................................................................129

Congure Layer 2 and Layer 3 ACLs............................................................................................................................130

Assign an IP ACL to an Interface..................................................................................................................................130

Applying an IP ACL..........................................................................................................................................................131

Counting ACL Hits.....................................................................................................................................................131

Congure Ingress ACLs................................................................................................................................................. 132

Congure Egress ACLs.................................................................................................................................................. 132

Applying Egress Layer 3 ACLs (Control-Plane).................................................................................................... 133

Conguring UDF ACL.....................................................................................................................................................134

IP Prex Lists...................................................................................................................................................................137

Implementation Information.................................................................................................................................... 138

Conguration Task List for Prex Lists.................................................................................................................. 138

ACL Resequencing..........................................................................................................................................................141

Resequencing an ACL or Prex List.......................................................................................................................142

Route Maps.....................................................................................................................................................................143

Implementation Information.................................................................................................................................... 143

8 Bidirectional Forwarding Detection (BFD).................................................................................................. 144

How BFD Works............................................................................................................................................................. 144

BFD Packet Format..................................................................................................................................................145

BFD Sessions............................................................................................................................................................ 146

BFD Three-Way Handshake.................................................................................................................................... 147

Session State Changes............................................................................................................................................149

Important Points to Remember.................................................................................................................................... 149

Congure BFD................................................................................................................................................................ 150

Congure BFD for Physical Ports.......................................................................................................................... 150

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

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

Congure BFD for OSPFv3.....................................................................................................................................159

Congure BFD for IS-IS...........................................................................................................................................162

Congure BFD for BGP...........................................................................................................................................165

Congure BFD for VRRP..........................................................................................................................................171

Conguring Protocol Liveness.................................................................................................................................174

Troubleshooting BFD................................................................................................................................................ 174

6

Contents

9 Border Gateway Protocol (BGP)................................................................................................................ 176

BGP IP version 4 (BGPv4) Overview.......................................................................................................................... 176

BGP Autonomous Systems..................................................................................................................................... 176

AS4 Number Representation.................................................................................................................................. 178

Four-Byte AS Numbers........................................................................................................................................... 180

BGP router ID............................................................................................................................................................180

Sessions and Peers.................................................................................................................................................. 180

Establish a Session....................................................................................................................................................181

BGP Attributes for selecting Best Path..................................................................................................................181

Multiprotocol BGP....................................................................................................................................................186

BGP global and address family conguration........................................................................................................ 187

Implement BGP with Dell EMC Networking OS...................................................................................................189

Conguration Information........................................................................................................................................192

Basic BGP conguration tasks......................................................................................................................................192

Prerequisite for conguring a BGP network......................................................................................................... 192

Restrictions............................................................................................................................................................... 193

Enabling BGP............................................................................................................................................................ 193

Enabling four-byte autonomous system numbers................................................................................................195

Changing a BGP router ID.......................................................................................................................................196

Conguring AS4 Number Representations........................................................................................................... 196

Conguring a BGP peer...........................................................................................................................................198

Example-Conguring BGP routing between peers..............................................................................................199

BGP peer group....................................................................................................................................................... 200

Advanced BGP conguration tasks.............................................................................................................................206

Route-refresh and Soft-reconguration............................................................................................................... 207

Aggregating Routes.................................................................................................................................................209

Filtering BGP..............................................................................................................................................................211

Conguring BGP Fast Fall-Over............................................................................................................................. 218

Conguring Passive Peering................................................................................................................................... 219

Enabling Graceful Restart.......................................................................................................................................220

Redistributing Routes...............................................................................................................................................221

Enabling Additional Paths........................................................................................................................................222

Conguring IP Community Lists............................................................................................................................ 223

Conguring an IP Extended Community List....................................................................................................... 224

Congure BGP attributes....................................................................................................................................... 225

Enabling Multipath...................................................................................................................................................229

Route Reectors......................................................................................................................................................230

Enabling Route Flap Dampening............................................................................................................................. 231

Changing BGP keepalive and hold timers.............................................................................................................233

Setting the extended timer.....................................................................................................................................234

Enabling or disabling BGP neighbors.....................................................................................................................235

Route Map Continue............................................................................................................................................... 236

Conguring BGP Confederations.......................................................................................................................... 236

Conguring a BGP VRF address family.................................................................................................................237

Maintaining Existing AS Numbers During an AS Migration................................................................................ 238

Contents

7

Allowing an AS Number to Appear in its Own AS Path...................................................................................... 239

Enabling MBGP Congurations............................................................................................................................. 240

MBGP support for IPv6..........................................................................................................................................240

Conguring IPv6 MBGP between peers............................................................................................................... 241

Example-Conguring IPv4 and IPv6 neighbors................................................................................................... 242

Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor......................................... 244

BGP Regular Expression Optimization..................................................................................................................246

Debugging BGP........................................................................................................................................................246

10 Content Addressable Memory (CAM).......................................................................................................249

CAM Allocation...............................................................................................................................................................249

Test CAM Usage.............................................................................................................................................................251

View CAM-ACL Settings............................................................................................................................................... 251

View CAM Usage...........................................................................................................................................................253

CAM Optimization......................................................................................................................................................... 253

Troubleshoot CAM Proling..........................................................................................................................................253

CAM Prole Mismatches........................................................................................................................................ 253

QoS CAM Region Limitation...................................................................................................................................254

Syslog Error When the Table is Full....................................................................................................................... 254

Syslog Warning Upon 90 Percent Utilization of CAM.........................................................................................254

Syslog Warning for Discrepancies Between Congured Extended Prexes....................................................254

Unied Forwarding Table (UFT) Modes......................................................................................................................254

Conguring UFT Modes......................................................................................................................................... 255

11 Control Plane Policing (CoPP).................................................................................................................. 257

Congure Control Plane Policing................................................................................................................................. 258

Conguring CoPP for Protocols............................................................................................................................ 259

Conguring CoPP for CPU Queues....................................................................................................................... 261

Protocol to CPU Queue Mapping.......................................................................................................................... 262

Conguring Protocol to CPU Queue Mapping.....................................................................................................262

Displaying CoPP Conguration ............................................................................................................................. 263

12 Data Center Bridging (DCB).....................................................................................................................265

Ethernet Enhancements in Data Center Bridging..................................................................................................... 265

Priority-Based Flow Control................................................................................................................................... 266

Enhanced Transmission Selection..........................................................................................................................267

Data Center Bridging Exchange Protocol (DCBx)...............................................................................................268

Data Center Bridging in a Trac Flow.................................................................................................................. 269

Buer Organization................................................................................................................................................. 269

Enabling Data Center Bridging..................................................................................................................................... 272

DCB Maps and its Attributes..................................................................................................................................273

Data Center Bridging: Default Conguration..............................................................................................................273

Conguring Priority-Based Flow Control.................................................................................................................... 274

Conguring Lossless Queues..................................................................................................................................275

Conguring PFC in a DCB Map................................................................................................................................... 276

PFC Conguration Notes........................................................................................................................................276

8

Contents

PFC Prerequisites and Restrictions....................................................................................................................... 277

Applying a DCB Map on a Port.................................................................................................................................... 278

Conguring PFC without a DCB Map.........................................................................................................................278

Conguring Lossless QueuesExample:..................................................................................................................279

Priority-Based Flow Control Using Dynamic Buer Method....................................................................................280

Pause and Resume of Trac..................................................................................................................................280

Buer Sizes for Lossless or PFC Packets............................................................................................................ 280

Shared headroom for lossless or PFC packets........................................................................................................... 281

Example Scenario.................................................................................................................................................... 282

Conguring Shared Head Room Buer................................................................................................................ 283

Viewing Shared Head Room Usage.......................................................................................................................283

Monitoring Buer Statistics for Tracking Purposes............................................................................................ 284

Behavior of Tagged Packets.........................................................................................................................................284

Conguration Example for DSCP and PFC Priorities................................................................................................284

SNMP Support for PFC and Buer Statistics Tracking............................................................................................285

Performing PFC Using DSCP Bits Instead of 802.1p Bits.........................................................................................286

PFC and ETS Conguration Examples........................................................................................................................287

Using PFC to Manage Converged Ethernet Trac...................................................................................................287

Operations on Untagged Packets................................................................................................................................ 287

Generation of PFC for a Priority for Untagged Packets...........................................................................................288

Congure Enhanced Transmission Selection..............................................................................................................288

Creating an ETS Priority Group..............................................................................................................................288

ETS Operation with DCBx......................................................................................................................................289

Conguring ETS in a DCB Map............................................................................................................................. 290

Hierarchical Scheduling in ETS Output Policies..........................................................................................................291

Using ETS to Manage Converged Ethernet Trac...................................................................................................292

Applying DCB Policies in a Switch Stack.................................................................................................................... 292

Congure a DCBx Operation........................................................................................................................................292

DCBx Operation....................................................................................................................................................... 292

DCBx Port Roles...................................................................................................................................................... 293

DCB Conguration Exchange................................................................................................................................ 294

Conguration Source Election................................................................................................................................294

Propagation of DCB Information........................................................................................................................... 295

Auto-Detection and Manual Conguration of the DCBx Version...................................................................... 295

DCBx Example......................................................................................................................................................... 296

DCBx Prerequisites and Restrictions.....................................................................................................................296

Conguring DCBx....................................................................................................................................................296

Verifying the DCB Conguration................................................................................................................................. 300

QoS dot1p Trac Classication and Queue Assignment..........................................................................................308

Conguring the Dynamic Buer Method................................................................................................................... 308

Sample DCB Conguration...........................................................................................................................................309

PFC and ETS Conguration Command Examples................................................................................................ 311

13 Dynamic Host Conguration Protocol (DHCP)..........................................................................................312

DHCP Packet Format and Options.............................................................................................................................. 312

Assign an IP Address using DHCP................................................................................................................................314

Contents

9

Implementation Information.......................................................................................................................................... 314

Congure the System to be a DHCP Server.............................................................................................................. 315

Conguring the Server for Automatic Address Allocation.................................................................................. 315

Specifying a Default Gateway................................................................................................................................. 317

Congure a Method of Hostname Resolution...................................................................................................... 317

Using DNS for Address Resolution.........................................................................................................................317

Using NetBIOS WINS for Address Resolution...................................................................................................... 317

Creating Manual Binding Entries............................................................................................................................ 318

Debugging the DHCP Server..................................................................................................................................318

Using DHCP Clear Commands............................................................................................................................... 318

Congure the System to be a DHCP Client................................................................................................................319

Conguring the DHCP Client System....................................................................................................................319

DHCP Client on a Management Interface.............................................................................................................321

DHCP Client Operation with Other Features........................................................................................................321

Conguring DHCP relay source interface...................................................................................................................322

Global DHCP relay source IPv4 or IPv6 conguration ....................................................................................... 322

Interface level DHCP relay source IPv4 or IPv6 conguration ..........................................................................323

Congure Secure DHCP............................................................................................................................................... 324

Option 82.................................................................................................................................................................. 324

DHCPv6 relay agent options..................................................................................................................................325

DHCP Snooping.......................................................................................................................................................325

Drop DHCP Packets on Snooped VLANs Only....................................................................................................330

Dynamic ARP Inspection........................................................................................................................................ 330

Conguring Dynamic ARP Inspection.................................................................................................................... 331

Source Address Validation............................................................................................................................................ 333

Enabling IP Source Address Validation..................................................................................................................333

DHCP MAC Source Address Validation................................................................................................................ 334

Enabling IP+MAC Source Address Validation.......................................................................................................334

Viewing the Number of SAV Dropped Packets................................................................................................... 335

Clearing the Number of SAV Dropped Packets...................................................................................................335

14 Equal Cost Multi-Path (ECMP)................................................................................................................ 336

ECMP for Flow-Based Anity.....................................................................................................................................336

Conguring the Hash Algorithm............................................................................................................................ 336

Enabling Deterministic ECMP Next Hop.............................................................................................................. 336

Conguring the Hash Algorithm Seed...................................................................................................................337

Link Bundle Monitoring..................................................................................................................................................337

Managing ECMP Group Paths...............................................................................................................................338

Creating an ECMP Group Bundle..........................................................................................................................338

Modifying the ECMP Group Threshold.................................................................................................................338

Support for /128 IPv6 and /32 IPv4 Prexes in Layer 3 Host Table and LPM Table......................................339

Support for ECMP in host table............................................................................................................................ 340

Support for moving /128 IPv6 Prexes and /32 IPv4 Prexes ........................................................................ 340

15 FIP Snooping............................................................................................................................................ 341

Fibre Channel over Ethernet.........................................................................................................................................341

10

Contents

Ensure Robustness in a Converged Ethernet Network.............................................................................................341

FIP Snooping on Ethernet Bridges.............................................................................................................................. 343

Using FIP Snooping....................................................................................................................................................... 345

FIP Snooping Prerequisites.....................................................................................................................................345

Important Points to Remember............................................................................................................................. 345

Enabling the FCoE Transit Feature........................................................................................................................ 347

Enable FIP Snooping on VLANs.............................................................................................................................347

Congure the FC-MAP Value.................................................................................................................................347

Congure a Port for a Bridge-to-Bridge Link....................................................................................................... 347

Congure a Port for a Bridge-to-FCF Link...........................................................................................................348

Impact on Other Software Features..................................................................................................................... 348

FIP Snooping Restrictions...................................................................................................................................... 348

Conguring FIP Snooping.......................................................................................................................................349

Displaying FIP Snooping Information...........................................................................................................................349

FCoE Transit Conguration Example...........................................................................................................................354

16 Flex Hash and Optimized Boot-Up............................................................................................................356

Flex Hash Capability Overview.................................................................................................................................... 356

Conguring the Flex Hash Mechanism.......................................................................................................................356

RDMA Over Converged Ethernet (RoCE) Overview................................................................................................357

Preserving 802.1Q VLAN Tag Value for Lite Subinterfaces......................................................................................358

17 Force10 Resilient Ring Protocol (FRRP)................................................................................................... 359

Protocol Overview.........................................................................................................................................................359

Ring Status............................................................................................................................................................... 360

Multiple FRRP Rings............................................................................................................................................... 360

Important FRRP Points............................................................................................................................................361

Important FRRP Concepts..................................................................................................................................... 362

Implementing FRRP.......................................................................................................................................................363

FRRP Conguration...................................................................................................................................................... 363

Creating the FRRP Group.......................................................................................................................................363

Conguring the Control VLAN...............................................................................................................................363

Conguring and Adding the Member VLANs...................................................................................................... 365

Setting the FRRP Timers........................................................................................................................................366

Clearing the FRRP Counters..................................................................................................................................366

Viewing the FRRP Conguration...........................................................................................................................366

Viewing the FRRP Information.............................................................................................................................. 366

Troubleshooting FRRP...................................................................................................................................................367

Conguration Checks..............................................................................................................................................367

Sample Conguration and Topology............................................................................................................................ 367

FRRP Support on VLT...................................................................................................................................................368

Example Scenario.................................................................................................................................................... 369

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

18 GARP VLAN Registration Protocol (GVRP)...............................................................................................371

Important Points to Remember.................................................................................................................................... 371

Contents

11

Congure GVRP.............................................................................................................................................................372

Related Conguration Tasks................................................................................................................................... 372

Enabling GVRP Globally................................................................................................................................................ 373

Enabling GVRP on a Layer 2 Interface........................................................................................................................ 373

Congure GVRP Registration.......................................................................................................................................373

Congure a GARP Timer...............................................................................................................................................374

19 Internet Group Management Protocol (IGMP)......................................................................................... 375

IGMP Implementation Information...............................................................................................................................375

IGMP Protocol Overview.............................................................................................................................................. 375

IGMP Version 2........................................................................................................................................................ 375

IGMP Version 3.........................................................................................................................................................377

Congure IGMP............................................................................................................................................................. 380

Related Conguration Tasks...................................................................................................................................380

Viewing IGMP Enabled Interfaces................................................................................................................................381

Selecting an IGMP Version............................................................................................................................................381

Viewing IGMP Groups...................................................................................................................................................382

Adjusting Timers............................................................................................................................................................ 382

Adjusting Query and Response Timers................................................................................................................. 382

Enabling IGMP Immediate-Leave.................................................................................................................................383

IGMP Snooping..............................................................................................................................................................383

IGMP Snooping Implementation Information....................................................................................................... 383

Conguring IGMP Snooping...................................................................................................................................384

Removing a Group-Port Association..................................................................................................................... 384

Disabling Multicast Flooding...................................................................................................................................385

Specifying a Port as Connected to a Multicast Router...................................................................................... 385

Conguring the Switch as Querier........................................................................................................................ 385

Fast Convergence after MSTP Topology Changes...................................................................................................386

Egress Interface Selection (EIS) for HTTP and IGMP Applications........................................................................386

Protocol Separation................................................................................................................................................. 387

Enabling and Disabling Management Egress Interface Selection...................................................................... 388

Handling of Management Route Conguration................................................................................................... 388

Handling of Switch-Initiated Trac....................................................................................................................... 389

Handling of Switch-Destined Trac..................................................................................................................... 390

Handling of Transit Trac (Trac Separation).................................................................................................... 390

Mapping of Management Applications and Trac Type.....................................................................................390

Behavior of Various Applications for Switch-Initiated Trac .............................................................................391

Behavior of Various Applications for Switch-Destined Trac ...........................................................................392

Interworking of EIS With Various Applications.....................................................................................................393

Designating a Multicast Router Interface................................................................................................................... 394

20 Interfaces................................................................................................................................................ 395

Basic Interface Conguration.......................................................................................................................................395

Advanced Interface Conguration...............................................................................................................................395

Interface Types...............................................................................................................................................................396

View Basic Interface Information.................................................................................................................................396

12

Contents

Resetting an Interface to its Factory Default State...................................................................................................398

Enabling a Physical Interface........................................................................................................................................399

Physical Interfaces.........................................................................................................................................................399

Conguration Task List for Physical Interfaces....................................................................................................399

Overview of Layer Modes...................................................................................................................................... 400

Conguring Layer 2 (Data Link) Mode................................................................................................................. 400

Conguring Layer 2 (Interface) Mode.................................................................................................................. 400

Conguring Layer 3 (Network) Mode................................................................................................................... 401

Conguring Layer 3 (Interface) Mode................................................................................................................... 401

Egress Interface Selection (EIS)..................................................................................................................................402

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

Conguring EIS........................................................................................................................................................ 402

Management Interfaces................................................................................................................................................403

Conguring Management Interfaces.....................................................................................................................403

Conguring a Management Interface on an Ethernet Port................................................................................403

VLAN Interfaces............................................................................................................................................................ 404

Loopback Interfaces......................................................................................................................................................405

Null Interfaces................................................................................................................................................................ 405

Port Channel Interfaces................................................................................................................................................405

Port Channel Denition and Standards.................................................................................................................406

Port Channel Benets.............................................................................................................................................406

Port Channel Implementation................................................................................................................................ 406

Interfaces in Port Channels.................................................................................................................................... 407

Conguration Tasks for Port Channel Interfaces.................................................................................................407

Creating a Port Channel..........................................................................................................................................407

Adding a Physical Interface to a Port Channel.....................................................................................................408

Reassigning an Interface to a New Port Channel................................................................................................409

Conguring the Minimum Oper Up Links in a Port Channel............................................................................... 410

Adding or Removing a Port Channel from a VLAN..............................................................................................410

Assigning an IP Address to a Port Channel............................................................................................................411

Deleting or Disabling a Port Channel......................................................................................................................412

Load Balancing Through Port Channels................................................................................................................ 412

Load-Balancing Method...........................................................................................................................................412

Changing the Hash Algorithm.................................................................................................................................413

Bulk Conguration.......................................................................................................................................................... 414

Interface Range........................................................................................................................................................ 414

Bulk Conguration Examples.................................................................................................................................. 414

Dening Interface Range Macros.................................................................................................................................416

Dene the Interface Range..................................................................................................................................... 416

Choosing an Interface-Range Macro.....................................................................................................................416

Monitoring and Maintaining Interfaces........................................................................................................................ 416

Maintenance Using TDR.......................................................................................................................................... 417

Non Dell-Qualied Transceivers....................................................................................................................................418

Splitting 100G Ports....................................................................................................................................................... 419

Link Dampening.............................................................................................................................................................. 419

Contents

13

Important Points to Remember............................................................................................................................. 420

Conguration Example of Link Dampening...........................................................................................................420

Enabling Link Dampening........................................................................................................................................422

Link Bundle Monitoring................................................................................................................................................. 423

Using Ethernet Pause Frames for Flow Control........................................................................................................ 424

Enabling Pause Frames........................................................................................................................................... 424

Congure the MTU Size on an Interface....................................................................................................................425

Conguring wavelength for 10–Gigabit SFP+ optics................................................................................................426

Port-Pipes.......................................................................................................................................................................426

CR4 Auto-Negotiation...................................................................................................................................................426

Setting the Speed of Ethernet Interfaces...................................................................................................................427

Speed Setting on 25G Interfaces................................................................................................................................ 428

Conguring 10G speed on 25G ports..........................................................................................................................429

FEC Conguration......................................................................................................................................................... 430

View Advanced Interface Information.........................................................................................................................432

Conguring the Interface Sampling Size.............................................................................................................. 433

Conguring the Trac Sampling Size Globally...........................................................................................................434

Dynamic Counters......................................................................................................................................................... 435

Clearing Interface Counters....................................................................................................................................436

Enhanced Validation of Interface Ranges...................................................................................................................436

Compressing Conguration Files................................................................................................................................. 436

OUI on 25G and 50G Interfaces..................................................................................................................................439

Conguring OUI on 25G and 50G Interfaces.......................................................................................................439

21 IPv4 Routing............................................................................................................................................ 440

IP Addresses....................................................................................................................................................................441

Implementation Information.................................................................................................................................... 441

Conguration Tasks for IP Addresses.......................................................................................................................... 441

Assigning IP Addresses to an Interface........................................................................................................................441

Conguring Static Routes.............................................................................................................................................442

Adding description for IPv4 and IPv6 static routes.............................................................................................443

Congure Static Routes for the Management Interface.......................................................................................... 444

Using the Congured Source IP Address in ICMP Messages..................................................................................444

Conguring the ICMP Source Interface............................................................................................................... 445

Conguring the Duration to Establish a TCP Connection........................................................................................ 445

Enabling Directed Broadcast........................................................................................................................................ 445

Resolution of Host Names............................................................................................................................................446

Enabling Dynamic Resolution of Host Names............................................................................................................446

Specifying the Local System Domain and a List of Domains....................................................................................447

Conguring DNS with Traceroute................................................................................................................................447

ARP..................................................................................................................................................................................448

Conguration Tasks for ARP........................................................................................................................................ 448

Conguring Static ARP Entries....................................................................................................................................448

Enabling Proxy ARP.......................................................................................................................................................449

Clearing ARP Cache......................................................................................................................................................449

ARP Learning via Gratuitous ARP................................................................................................................................449

14

Contents

Enabling ARP Learning via Gratuitous ARP................................................................................................................450

ARP Learning via ARP Request................................................................................................................................... 450

Conguring ARP Retries................................................................................................................................................451

ICMP................................................................................................................................................................................ 451

Conguration Tasks for ICMP.......................................................................................................................................451

Enabling ICMP Unreachable Messages....................................................................................................................... 451

ICMP Redirects..............................................................................................................................................................452

UDP Helper.....................................................................................................................................................................453

Congure UDP Helper.............................................................................................................................................453

Important Points to Remember............................................................................................................................. 453

Enabling UDP Helper.....................................................................................................................................................453

Conguring a Broadcast Address................................................................................................................................ 454

Congurations Using UDP Helper............................................................................................................................... 454

UDP Helper with Broadcast-All Addresses.................................................................................................................454

UDP Helper with Subnet Broadcast Addresses.........................................................................................................455

UDP Helper with Congured Broadcast Addresses..................................................................................................455

UDP Helper with No Congured Broadcast Addresses............................................................................................456

Troubleshooting UDP Helper........................................................................................................................................456

22 IPv6 Routing............................................................................................................................................ 457

Protocol Overview......................................................................................................................................................... 457

Extended Address Space........................................................................................................................................457

Path MTU discovery................................................................................................................................................457

Stateless Autoconguration................................................................................................................................... 458

IPv6 Headers............................................................................................................................................................459

Longest Prex Match (LPM) Table and IPv6 /65 – /128 support................................................................... 459

IPv6 Header Fields.................................................................................................................................................. 460

Extension Header Fields.......................................................................................................................................... 461

Addressing................................................................................................................................................................ 462

Implementing IPv6 with Dell EMC Networking OS................................................................................................... 463

ICMPv6...........................................................................................................................................................................463

Path MTU discovery......................................................................................................................................................464

IPv6 Neighbor Discovery.............................................................................................................................................. 464

IPv6 Neighbor Discovery of MTU Packets.......................................................................................................... 465

Conguring the IPv6 Recursive DNS Server....................................................................................................... 465

Debugging IPv6 RDNSS Information Sent to the Host .....................................................................................466

Displaying IPv6 RDNSS Information......................................................................................................................466

Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 467

Conguration Tasks for IPv6........................................................................................................................................ 467

Adjusting Your CAM-Prole.................................................................................................................................... 467

Assigning an IPv6 Address to an Interface...........................................................................................................468

Assigning a Static IPv6 Route................................................................................................................................469

Conguring Telnet with IPv6..................................................................................................................................469

SNMP over IPv6......................................................................................................................................................470

Displaying IPv6 Information.................................................................................................................................... 470

Displaying an IPv6 Interface Information.............................................................................................................. 470

Contents

15

Showing IPv6 Routes...............................................................................................................................................471

Showing the Running-Conguration for an Interface......................................................................................... 472

Clearing IPv6 Routes............................................................................................................................................... 473

Conguring IPv6 RA Guard.......................................................................................................................................... 473

23 iSCSI Optimization...................................................................................................................................476

iSCSI Optimization Overview....................................................................................................................................... 476

Monitoring iSCSI Trac Flows............................................................................................................................... 478

Application of Quality of Service to iSCSI Trac Flows......................................................................................478

Information Monitored in iSCSI Trac Flows....................................................................................................... 478

Detection and Auto-Conguration for Dell EqualLogic Arrays........................................................................... 479

Conguring Detection and Ports for Dell Compellent Arrays............................................................................. 479

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer.................................................................480

Enable and Disable iSCSI Optimization.................................................................................................................480

Default iSCSI Optimization Values................................................................................................................................481

iSCSI Optimization Prerequisites.................................................................................................................................. 481

Conguring iSCSI Optimization.................................................................................................................................... 481

Displaying iSCSI Optimization Information..................................................................................................................483

24 Intermediate System to Intermediate System.......................................................................................... 485

IS-IS Protocol Overview............................................................................................................................................... 485

IS-IS Addressing.............................................................................................................................................................485

Multi-Topology IS-IS...................................................................................................................................................... 486

Transition Mode....................................................................................................................................................... 486

Interface Support.....................................................................................................................................................487

Adjacencies...............................................................................................................................................................487

Graceful Restart.............................................................................................................................................................487

Timers........................................................................................................................................................................487

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

Conguration Information.............................................................................................................................................488

Conguration Tasks for IS-IS..................................................................................................................................489

Conguring the Distance of a Route.....................................................................................................................496

Changing the IS-Type.............................................................................................................................................. 497

Redistributing IPv4 Routes.....................................................................................................................................499

Redistributing IPv6 Routes.....................................................................................................................................500

Conguring Authentication Passwords................................................................................................................. 501

Setting the Overload Bit..........................................................................................................................................501

Debugging IS-IS.......................................................................................................................................................502

IS-IS Metric Styles.........................................................................................................................................................503

Congure Metric Values............................................................................................................................................... 503

Maximum Values in the Routing Table.................................................................................................................. 504

Change the IS-IS Metric Style in One Level Only................................................................................................504

Leaks from One Level to Another..........................................................................................................................505

Sample Congurations..................................................................................................................................................506

25 Link Aggregation Control Protocol (LACP).............................................................................................. 509

16

Contents

Introduction to Dynamic LAGs and LACP.................................................................................................................. 509

Important Points to Remember............................................................................................................................. 509

LACP Modes.............................................................................................................................................................510

Conguring LACP Commands................................................................................................................................510

LACP Conguration Tasks..............................................................................................................................................511

Creating a LAG.......................................................................................................................................................... 511

Conguring the LAG Interfaces as Dynamic..........................................................................................................511

Setting the LACP Long Timeout............................................................................................................................ 512

Monitoring and Debugging LACP...........................................................................................................................512

Shared LAG State Tracking........................................................................................................................................... 513

Conguring Shared LAG State Tracking................................................................................................................513

Important Points about Shared LAG State Tracking............................................................................................515

LACP Basic Conguration Example............................................................................................................................. 515

Congure a LAG on ALPHA....................................................................................................................................515

26 Layer 2.....................................................................................................................................................524

Manage the MAC Address Table................................................................................................................................. 524

Clearing the MAC Address Table........................................................................................................................... 524

Setting the Aging Time for Dynamic Entries........................................................................................................524

Conguring a Static MAC Address........................................................................................................................525

Displaying the MAC Address Table........................................................................................................................ 525

MAC Learning Limit.......................................................................................................................................................525

Setting the MAC Learning Limit............................................................................................................................ 526

mac learning-limit Dynamic.....................................................................................................................................526

mac learning-limit mac-address-sticky................................................................................................................. 526

mac learning-limit station-move.............................................................................................................................527

mac learning-limit no-station-move.......................................................................................................................527

Learning Limit Violation Actions............................................................................................................................. 527

Setting Station Move Violation Actions................................................................................................................ 528

Recovering from Learning Limit and Station Move Violations........................................................................... 528

Disabling MAC Address Learning on the System.......................................................................................................529

Enabling port security................................................................................................................................................... 529

NIC Teaming................................................................................................................................................................... 529

Congure Redundant Pairs.......................................................................................................................................... 530

Important Points about Conguring Redundant Pairs........................................................................................ 532

Far-End Failure Detection.............................................................................................................................................533

FEFD State Changes...............................................................................................................................................534

Conguring FEFD.................................................................................................................................................... 535

Enabling FEFD on an Interface.............................................................................................................................. 535

Debugging FEFD......................................................................................................................................................536

27 Link Layer Discovery Protocol (LLDP)..................................................................................................... 538

802.1AB (LLDP) Overview............................................................................................................................................538

Protocol Data Units................................................................................................................................................. 538

Optional TLVs.................................................................................................................................................................539

Management TLVs.................................................................................................................................................. 539

Contents

17

TIA-1057 (LLDP-MED) Overview................................................................................................................................. 541

TIA Organizationally Specic TLVs.........................................................................................................................541

Congure LLDP............................................................................................................................................................. 545

Related Conguration Tasks...................................................................................................................................545

Important Points to Remember............................................................................................................................. 545

LLDP Compatibility..................................................................................................................................................545

CONFIGURATION versus INTERFACE Congurations............................................................................................ 545

Enabling LLDP................................................................................................................................................................546

Disabling and Undoing LLDP..................................................................................................................................546

Enabling LLDP on Management Ports........................................................................................................................546

Disabling and Undoing LLDP on Management Ports.......................................................................................... 547

Advertising TLVs............................................................................................................................................................ 547

Viewing the LLDP Conguration................................................................................................................................. 548

Viewing Information Advertised by Adjacent LLDP Neighbors................................................................................549

Examples of Viewing Information Advertised by Neighbors.............................................................................. 549

Conguring LLDPDU Intervals.....................................................................................................................................550

Conguring Transmit and Receive Mode................................................................................................................... 550

Conguring the Time to Live Value.............................................................................................................................. 551

Debugging LLDP............................................................................................................................................................552

Relevant Management Objects................................................................................................................................... 553

28 Microsoft Network Load Balancing..........................................................................................................558

NLB Unicast Mode Scenario........................................................................................................................................558

NLB Multicast Mode Scenario.....................................................................................................................................558

Limitations of the NLB Feature....................................................................................................................................559

Microsoft Clustering......................................................................................................................................................559

Enable and Disable VLAN Flooding ............................................................................................................................ 559

Conguring a Switch for NLB .....................................................................................................................................559

Enabling a Switch for Multicast NLB.................................................................................................................... 560

29 Multicast Source Discovery Protocol (MSDP)..........................................................................................561

Protocol Overview..........................................................................................................................................................561

Anycast RP.....................................................................................................................................................................562

Implementation Information......................................................................................................................................... 563

Congure Multicast Source Discovery Protocol........................................................................................................563

Related Conguration Tasks...................................................................................................................................563

Enable MSDP................................................................................................................................................................. 567

Manage the Source-Active Cache..............................................................................................................................568

Viewing the Source-Active Cache........................................................................................................................ 568

Limiting the Source-Active Cache.........................................................................................................................568

Clearing the Source-Active Cache........................................................................................................................569

Enabling the Rejected Source-Active Cache.......................................................................................................569

Accept Source-Active Messages that Fail the RFP Check..................................................................................... 569

Specifying Source-Active Messages...........................................................................................................................572

Limiting the Source-Active Messages from a Peer................................................................................................... 573

Preventing MSDP from Caching a Local Source....................................................................................................... 573

18

Contents

Preventing MSDP from Caching a Remote Source...................................................................................................574

Preventing MSDP from Advertising a Local Source.................................................................................................. 574

Logging Changes in Peership States...........................................................................................................................575

Terminating a Peership..................................................................................................................................................575

Clearing Peer Statistics.................................................................................................................................................576

Debugging MSDP.......................................................................................................................................................... 576

MSDP with Anycast RP................................................................................................................................................ 577

Conguring Anycast RP................................................................................................................................................578

Reducing Source-Active Message Flooding.........................................................................................................579

Specifying the RP Address Used in SA Messages.............................................................................................. 579

MSDP Sample Congurations...................................................................................................................................... 581

30 Multicast Listener Discovery Protocol..................................................................................................... 584

MLD Version 1................................................................................................................................................................ 584

MLD Querier Router......................................................................................................................................................584

Joining a Multicast Group.............................................................................................................................................585

Leaving a Multicast Group............................................................................................................................................585

MLD version 2................................................................................................................................................................585

MLD timers.....................................................................................................................................................................587

Reducing Host Response Burstiness.................................................................................................................... 588

Conguring MLD Version..............................................................................................................................................588

Clearing MLD groups.................................................................................................................................................... 588

Debugging MLD.............................................................................................................................................................588

Explicit Tracking............................................................................................................................................................. 588

Reducing Leave Latency...............................................................................................................................................589

Displaying MLD groups table........................................................................................................................................589

Displaying MLD Interfaces............................................................................................................................................589

MLD Snooping............................................................................................................................................................... 589

Enable MLD Snooping............................................................................................................................................ 590

Disable MLD Snooping............................................................................................................................................590

Congure the switch as a querier..........................................................................................................................590

Specify port as connected to multicast router.................................................................................................... 590

Enable Snooping Explicit Tracking..........................................................................................................................591

Display the MLD Snooping Table............................................................................................................................591

31 Multiple Spanning Tree Protocol (MSTP)................................................................................................. 592

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

Spanning Tree Variations...............................................................................................................................................593

Implementation Information....................................................................................................................................593

Congure Multiple Spanning Tree Protocol................................................................................................................593

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

Enable Multiple Spanning Tree Globally...................................................................................................................... 594

Adding and Removing Interfaces.................................................................................................................................594

Creating Multiple Spanning Tree Instances................................................................................................................595

Inuencing MSTP Root Selection................................................................................................................................596

Interoperate with Non-Dell Bridges............................................................................................................................. 597

Contents

19

Changing the Region Name or Revision..................................................................................................................... 597

Modifying Global Parameters....................................................................................................................................... 597

Modifying the Interface Parameters........................................................................................................................... 599

Setting STP path cost as constant.............................................................................................................................600

Conguring an EdgePort.............................................................................................................................................. 600

Flush MAC Addresses after a Topology Change........................................................................................................ 601

MSTP Sample Congurations.......................................................................................................................................601

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

CongurationSFTOS Example Running-Conguration........................................................................................601

Debugging and Verifying MSTP Congurations........................................................................................................ 605

32 Multicast Features................................................................................................................................... 607

Enabling IP Multicast.....................................................................................................................................................607

Implementation Information..........................................................................................................................................607

Multicast Policies...........................................................................................................................................................608

IPv4 Multicast Policies............................................................................................................................................608

Understanding Multicast Traceroute (mtrace)........................................................................................................... 615

Important Points to Remember.............................................................................................................................. 616

Printing Multicast Traceroute (mtrace) Paths............................................................................................................ 616

Supported Error Codes..................................................................................................................................................617

mtrace Scenarios............................................................................................................................................................618

33 Object Tracking........................................................................................................................................624

Object Tracking Overview............................................................................................................................................ 624

Track Layer 2 Interfaces..........................................................................................................................................625

Track Layer 3 Interfaces..........................................................................................................................................625

Track IPv4 and IPv6 Routes................................................................................................................................... 626

Set Tracking Delays..................................................................................................................................................627

VRRP Object Tracking.............................................................................................................................................627

Object Tracking Conguration......................................................................................................................................627

Tracking a Layer 2 Interface....................................................................................................................................627

Tracking a Layer 3 Interface................................................................................................................................... 628

Track an IPv4/IPv6 Route...................................................................................................................................... 630

Displaying Tracked Objects...........................................................................................................................................634

34 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................636

Protocol Overview.........................................................................................................................................................636

Autonomous System (AS) Areas........................................................................................................................... 636

Area Types.................................................................................................................................................................637

Networks and Neighbors........................................................................................................................................638

Router Types............................................................................................................................................................ 638

Designated and Backup Designated Routers.......................................................................................................640

Link-State Advertisements (LSAs)........................................................................................................................640

Router Priority and Cost..........................................................................................................................................641

OSPF with Dell EMC Networking OS.........................................................................................................................642

Graceful Restart.......................................................................................................................................................643

20

Contents

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