Dell PowerSwitch S4820T Owner's manual

Dell Conguration Guide for the S4820T System

9.14.1.0

Notes, cautions, and warnings

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

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

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

may be trademarks of their respective owners.

2018 - 11

Rev. A00

Contents

1 About this Guide...........................................................................................................................................36

Audience........................................................................................................................................................................... 36

Conventions......................................................................................................................................................................36

Related Documents......................................................................................................................................................... 36

2 Conguration Fundamentals........................................................................................................................ 37

Accessing the Command Line........................................................................................................................................ 37

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

Navigating CLI Modes...............................................................................................................................................39

The do Command............................................................................................................................................................ 42

Undoing Commands........................................................................................................................................................ 42

Obtaining Help..................................................................................................................................................................43

Entering and Editing Commands....................................................................................................................................43

Command History............................................................................................................................................................ 44

Filtering show Command Outputs.................................................................................................................................44

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

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

3 Getting Started............................................................................................................................................46

Console Access................................................................................................................................................................ 47

Serial Console............................................................................................................................................................. 47

Accessing the CLI Interface and Running Scripts Using SSH....................................................................................48

Entering CLI commands Using an SSH Connection..............................................................................................48

Executing Local CLI Scripts Using an SSH Connection........................................................................................48

Default Conguration...................................................................................................................................................... 49

Conguring a Host Name............................................................................................................................................... 49

Accessing the System Remotely....................................................................................................................................49

Accessing the System Remotely..............................................................................................................................49

Congure the Management Port IP Address......................................................................................................... 49

Congure a Management Route..............................................................................................................................50

Conguring a Username and Password..................................................................................................................50

Conguring the Enable Password...................................................................................................................................51

Conguration File Management......................................................................................................................................51

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

Mounting an NFS File System..................................................................................................................................52

Save the Running-Conguration..............................................................................................................................54

Congure the Overload Bit for a Startup Scenario............................................................................................... 55

Viewing Files...............................................................................................................................................................55

Managing the File System.............................................................................................................................................. 56

Enabling Software Features on Devices Using a Command Option......................................................................... 56

View Command History...................................................................................................................................................57

Upgrading Dell EMC Networking OS.............................................................................................................................57

Contents

3

Using HTTP for File Transfers........................................................................................................................................ 57

Verify Software Images Before Installation...................................................................................................................58

4 Management............................................................................................................................................... 60

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

Creating a Custom Privilege Level............................................................................................................................61

Removing a Command from EXEC Mode............................................................................................................... 61

Moving a Command from EXEC Privilege Mode to EXEC Mode........................................................................ 61

Allowing Access to CONFIGURATION Mode Commands.....................................................................................61

Allowing Access to Dierent Modes........................................................................................................................ 61

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

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

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

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

Conguring Logging Format ...................................................................................................................................66

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

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

Log Messages in the Internal Buer..............................................................................................................................68

Conguration Task List for System Log Management.......................................................................................... 68

Disabling System Logging............................................................................................................................................... 68

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

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

Track Login Activity......................................................................................................................................................... 69

Restrictions for Tracking Login Activity.................................................................................................................. 69

Conguring Login Activity Tracking.........................................................................................................................69

Display Login Statistics..............................................................................................................................................70

Limit Concurrent Login Sessions.....................................................................................................................................71

Restrictions for Limiting the Number of Concurrent Sessions............................................................................. 71

Conguring Concurrent Session Limit......................................................................................................................71

Enabling the System to Clear Existing Sessions.................................................................................................... 72

Enabling Secured CLI Mode............................................................................................................................................73

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

4

Contents

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

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

Recovering from a Forgotten Password....................................................................................................................... 82

Recovering from a Forgotten Enable Password.....................................................................................................83

Recovering from a Failed Start.......................................................................................................................................84

Restoring the Factory Default Settings.........................................................................................................................84

Important Points to Remember................................................................................................................................84

Restoring Factory Default Environment Variables................................................................................................. 85

Dell EMC Networking OS Security Hardening............................................................................................................. 86

Dell EMC Networking OS Image Verication......................................................................................................... 86

Startup Conguration Verication............................................................................................................................87

Conguring the root User Password....................................................................................................................... 88

Locking Access to GRUB Interface......................................................................................................................... 89

Enabling User Lockout for Failed Login Attempts..................................................................................................90

5 802.1X.......................................................................................................................................................... 91

Port-Authentication Process.......................................................................................................................................... 93

EAP over RADIUS......................................................................................................................................................93

Conguring 802.1X...........................................................................................................................................................94

Related Conguration Tasks..................................................................................................................................... 94

Important Points to Remember......................................................................................................................................94

Enabling 802.1X................................................................................................................................................................ 95

Conguring MAC addresses for a do1x Prole.............................................................................................................96

Conguring Request Identity Re-Transmissions........................................................................................................... 97

Conguring a Quiet Period after a Failed Authentication......................................................................................97

Forcibly Authorizing or Unauthorizing a Port............................................................................................................... 98

Re-Authenticating a Port................................................................................................................................................99

Conguring Timeouts.................................................................................................................................................... 100

Conguring Dynamic VLAN Assignment with Port Authentication..........................................................................101

Guest and Authentication-Fail VLANs.........................................................................................................................102

Conguring a Guest VLAN......................................................................................................................................102

Conguring an Authentication-Fail VLAN............................................................................................................. 102

Conguring dot1x Prole .............................................................................................................................................. 103

Conguring the Static MAB and MAB Prole ........................................................................................................... 104

Conguring Critical VLAN ............................................................................................................................................ 105

6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM).................................. 106

Optimizing CAM Utilization During the Attachment of ACLs to VLANs................................................................. 106

Guidelines for Conguring ACL VLAN Groups............................................................................................................107

Conguring ACL VLAN Groups and Conguring FP Blocks for VLAN Parameters...............................................107

Conguring ACL VLAN Groups.............................................................................................................................. 107

Conguring FP Blocks for VLAN Parameters.......................................................................................................108

Viewing CAM Usage...................................................................................................................................................... 109

Allocating FP Blocks for VLAN Processes................................................................................................................... 110

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

Contents

5

IP Access Control Lists (ACLs)......................................................................................................................................113

CAM Usage................................................................................................................................................................114

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

IP Fragment Handling..................................................................................................................................................... 116

IP Fragments ACL Examples................................................................................................................................... 116

Layer 4 ACL Rules Examples....................................................................................................................................117

Congure a Standard IP ACL.........................................................................................................................................117

Conguring a Standard IP ACL Filter......................................................................................................................118

Congure an Extended IP ACL......................................................................................................................................119

Conguring Filters with a Sequence Number........................................................................................................119

Conguring Filters Without a Sequence Number................................................................................................. 121

Congure Layer 2 and Layer 3 ACLs............................................................................................................................ 121

Assign an IP ACL to an Interface..................................................................................................................................122

Applying an IP ACL.........................................................................................................................................................122

Counting ACL Hits....................................................................................................................................................123

Congure Ingress ACLs................................................................................................................................................. 123

Congure Egress ACLs.................................................................................................................................................. 124

Applying Egress Layer 3 ACLs (Control-Plane).................................................................................................... 125

IP Prex Lists.................................................................................................................................................................. 125

Implementation Information.................................................................................................................................... 126

Conguration Task List for Prex Lists.................................................................................................................. 126

ACL Remarks.................................................................................................................................................................. 129

Conguring a Remark.............................................................................................................................................. 129

Deleting a Remark.................................................................................................................................................... 130

ACL Resequencing..........................................................................................................................................................131

Resequencing an ACL or Prex List........................................................................................................................131

Route Maps.....................................................................................................................................................................132

Implementation Information.................................................................................................................................... 132

Important Points to Remember.................................................................................................................................... 133

Conguration Task List for Route Maps................................................................................................................ 133

Conguring Match Routes...................................................................................................................................... 135

Conguring Set Conditions..................................................................................................................................... 136

Congure a Route Map for Route Redistribution................................................................................................. 137

Congure a Route Map for Route Tagging........................................................................................................... 138

Continue Clause........................................................................................................................................................138

Logging of ACL Processes............................................................................................................................................ 139

Guidelines for Conguring ACL Logging................................................................................................................139

Conguring ACL Logging........................................................................................................................................ 140

Flow-Based Monitoring..................................................................................................................................................140

Behavior of Flow-Based Monitoring....................................................................................................................... 141

Enabling Flow-Based Monitoring............................................................................................................................142

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

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

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

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

6

Contents

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

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

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

Congure BFD................................................................................................................................................................ 149

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

Congure BFD for Static Routes.............................................................................................................................151

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

Congure BFD for OSPFv3.....................................................................................................................................158

Congure BFD for IS-IS............................................................................................................................................161

Congure BFD for BGP........................................................................................................................................... 163

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

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

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

9 Border Gateway Protocol version 4 (BGPv4)..............................................................................................176

Autonomous Systems (AS)........................................................................................................................................... 176

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

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

Route Reectors.............................................................................................................................................................179

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

Best Path Selection Criteria....................................................................................................................................180

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

Local Preference.......................................................................................................................................................182

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

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

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

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

Multiprotocol BGP..........................................................................................................................................................185

MBGP for IPv4 MulticastBGP Address Family modelIPv4 and IPv6 address family....................................... 186

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

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

Advertise IGP Cost as MED for Redistributed Routes.........................................................................................187

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

Four-Byte AS Numbers............................................................................................................................................187

AS4 Number Representation.................................................................................................................................. 188

AS Number Migration.............................................................................................................................................. 189

BGP4 Management Information Base (MIB)........................................................................................................190

Important Points to Remember..............................................................................................................................190

Conguration Information.............................................................................................................................................. 191

Enabling BGP.................................................................................................................................................................. 192

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

Conguring AS4 Number Representations...........................................................................................................195

Conguring Peer Groups......................................................................................................................................... 197

Conguring BGP Fast Fall-Over.............................................................................................................................199

Conguring Passive Peering...................................................................................................................................200

Maintaining Existing AS Numbers During an AS Migration.................................................................................201

Contents

7

Allowing an AS Number to Appear in its Own AS Path...................................................................................... 202

Enabling Graceful Restart.......................................................................................................................................203

Enabling Neighbor Graceful Restart......................................................................................................................204

Filtering on an AS-Path Attribute.......................................................................................................................... 204

Regular Expressions as Filters................................................................................................................................206

Redistributing Routes.............................................................................................................................................. 207

Enabling Additional Paths....................................................................................................................................... 208

Conguring IP Community Lists............................................................................................................................ 208

Conguring an IP Extended Community List....................................................................................................... 209

Filtering Routes with Community Lists..................................................................................................................210

Manipulating the COMMUNITY Attribute..............................................................................................................211

Changing MED Attributes....................................................................................................................................... 212

Changing the LOCAL_PREFERENCE Attribute...................................................................................................212

Conguring the local System or a Dierent System to be the Next Hop for BGP-Learned Routes............. 213

Changing the WEIGHT Attribute............................................................................................................................214

Enabling Multipath....................................................................................................................................................214

Filtering BGP Routes................................................................................................................................................214

Filtering BGP Routes Using Route Maps...............................................................................................................216

Filtering BGP Routes Using AS-PATH Information.............................................................................................. 216

Conguring BGP Route Reectors.........................................................................................................................217

Aggregating Routes..................................................................................................................................................218

Conguring BGP Confederations........................................................................................................................... 218

Enabling Route Flap Dampening.............................................................................................................................219

Changing BGP Timers..............................................................................................................................................221

Route-refresh and Soft-reconguration................................................................................................................221

Enabling or disabling BGP neighbors.....................................................................................................................223

Route Map Continue............................................................................................................................................... 224

Enabling MBGP Congurations....................................................................................................................................224

Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor......................................... 225

BGP Regular Expression Optimization........................................................................................................................ 227

Debugging BGP..............................................................................................................................................................227

Storing Last and Bad PDUs....................................................................................................................................228

Capturing PDUs....................................................................................................................................................... 229

PDU Counters.......................................................................................................................................................... 230

Example-Conguring BGP peer groups......................................................................................................................230

10 Content Addressable Memory (CAM).......................................................................................................237

CAM Allocation...............................................................................................................................................................237

Test CAM Usage............................................................................................................................................................239

View CAM Proles.........................................................................................................................................................239

View CAM-ACL Settings.............................................................................................................................................. 240

View CAM Usage............................................................................................................................................................241

Conguring CAM Threshold and Silence Period........................................................................................................242

Setting CAM Threshold and Silence Period..........................................................................................................242

CAM Optimization......................................................................................................................................................... 243

Troubleshoot CAM Proling..........................................................................................................................................243

8

Contents

QoS CAM Region Limitation...................................................................................................................................243

11 Control Plane Policing (CoPP).................................................................................................................. 245

Congure Control Plane Policing................................................................................................................................. 246

Conguring CoPP for Protocols.............................................................................................................................247

Conguring CoPP for CPU Queues...................................................................................................................... 249

CoPP for OSPFv3 Packets.................................................................................................................................... 250

Conguring CoPP for OSPFv3.............................................................................................................................. 253

Displaying CoPP Conguration ............................................................................................................................. 253

12 Data Center Bridging (DCB).....................................................................................................................256

Ethernet Enhancements in Data Center Bridging..................................................................................................... 256

Priority-Based Flow Control................................................................................................................................... 257

Enhanced Transmission Selection..........................................................................................................................258

Data Center Bridging Exchange Protocol (DCBx)...............................................................................................259

Data Center Bridging in a Trac Flow.................................................................................................................. 260

Enabling Data Center Bridging.....................................................................................................................................260

DCB Maps and its Attributes.................................................................................................................................. 261

Data Center Bridging: Default Conguration..............................................................................................................262

Conguring Priority-Based Flow Control....................................................................................................................262

Conguring Lossless Queues................................................................................................................................. 263

Conguring PFC in a DCB Map................................................................................................................................... 264

PFC Conguration Notes........................................................................................................................................264

PFC Prerequisites and Restrictions.......................................................................................................................265

Applying a DCB Map on a Port....................................................................................................................................265

Conguring PFC without a DCB Map.........................................................................................................................266

Conguring Lossless QueuesExample:..................................................................................................................266

Priority-Based Flow Control Using Dynamic Buer Method....................................................................................267

Pause and Resume of Trac..................................................................................................................................268

Buer Sizes for Lossless or PFC Packets............................................................................................................ 268

Behavior of Tagged Packets.........................................................................................................................................268

Conguration Example for DSCP and PFC Priorities................................................................................................269

Using PFC to Manage Converged Ethernet Trac...................................................................................................270

Congure Enhanced Transmission Selection..............................................................................................................270

ETS Prerequisites and Restrictions........................................................................................................................270

Creating an ETS Priority Group..............................................................................................................................270

ETS Operation with DCBx.......................................................................................................................................271

Conguring Bandwidth Allocation for DCBx CIN.................................................................................................272

Conguring ETS in a DCB Map..............................................................................................................................273

Hierarchical Scheduling in ETS Output Policies..........................................................................................................274

Using ETS to Manage Converged Ethernet Trac................................................................................................... 274

Applying DCB Policies in a Switch Stack.................................................................................................................... 275

Congure a DCBx Operation........................................................................................................................................275

DCBx Operation....................................................................................................................................................... 275

DCBx Port Roles...................................................................................................................................................... 275

DCB Conguration Exchange.................................................................................................................................277

Contents

9

Conguration Source Election................................................................................................................................277

Propagation of DCB Information............................................................................................................................278

Auto-Detection and Manual Conguration of the DCBx Version.......................................................................278

DCBx Example..........................................................................................................................................................278

DCBx Prerequisites and Restrictions.....................................................................................................................279

Conguring DCBx.................................................................................................................................................... 279

Verifying the DCB Conguration..................................................................................................................................283

Sample DCB Conguration........................................................................................................................................... 291

PFC and ETS Conguration Command Examples...............................................................................................293

QoS dot1p Trac Classication and Queue Assignment..........................................................................................293

Conguring the Dynamic Buer Method................................................................................................................... 294

13 Dynamic Host Conguration Protocol (DHCP).........................................................................................296

DHCP Packet Format and Options............................................................................................................................. 296

Assign an IP Address using DHCP...............................................................................................................................298

Implementation Information..........................................................................................................................................299

Congure the System to be a DHCP Server............................................................................................................. 299

Conguring the Server for Automatic Address Allocation..................................................................................300

Specifying a Default Gateway.................................................................................................................................301

Congure a Method of Hostname Resolution...................................................................................................... 301

Using DNS for Address Resolution.........................................................................................................................301

Using NetBIOS WINS for Address Resolution..................................................................................................... 302

Creating Manual Binding Entries............................................................................................................................302

Debugging the DHCP Server.................................................................................................................................302

Using DHCP Clear Commands.............................................................................................................................. 303

Congure the System to be a Relay Agent................................................................................................................ 303

Congure the System to be a DHCP Client...............................................................................................................305

DHCP Client Operation with Other Features.......................................................................................................305

DHCP Client on a Management Interface............................................................................................................306

Congure the System for User Port Stacking (Option 230)....................................................................................307

Conguring DHCP relay source interface................................................................................................................... 307

Global DHCP relay source IPv4 or IPv6 conguration ....................................................................................... 307

Interface level DHCP relay source IPv4 or IPv6 conguration ..........................................................................308

Congure Secure DHCP...............................................................................................................................................309

Option 82..................................................................................................................................................................309

DHCP Snooping........................................................................................................................................................310

Conguring the DHCP secondary-subnet.............................................................................................................314

Drop DHCP Packets on Snooped VLANs Only.................................................................................................... 315

Dynamic ARP Inspection......................................................................................................................................... 315

Conguring Dynamic ARP Inspection....................................................................................................................316

Source Address Validation............................................................................................................................................. 317

Enabling IP Source Address Validation................................................................................................................... 317

DHCP MAC Source Address Validation................................................................................................................. 318

Enabling IP+MAC Source Address Validation........................................................................................................318

Viewing the Number of SAV Dropped Packets.................................................................................................... 319

Clearing the Number of SAV Dropped Packets....................................................................................................319

10

Contents

14 Equal Cost Multi-Path (ECMP)................................................................................................................ 320

ECMP for Flow-Based Anity.....................................................................................................................................320

Conguring the Hash Algorithm............................................................................................................................ 320

Enabling Deterministic ECMP Next Hop.............................................................................................................. 320

Conguring the Hash Algorithm Seed................................................................................................................... 321

Link Bundle Monitoring.................................................................................................................................................. 321

Managing ECMP Group Paths...............................................................................................................................322

Creating an ECMP Group Bundle.......................................................................................................................... 322

Modifying the ECMP Group Threshold.................................................................................................................322

RTAG7............................................................................................................................................................................. 323

Flow-based Hashing for ECMP....................................................................................................................................324

15 FIP Snooping............................................................................................................................................ 327

Fibre Channel over Ethernet.........................................................................................................................................327

Ensure Robustness in a Converged Ethernet Network............................................................................................ 327

FIP Snooping on Ethernet Bridges.............................................................................................................................. 329

FIP Snooping in a Switch Stack....................................................................................................................................331

Using FIP Snooping........................................................................................................................................................ 331

FIP Snooping Prerequisites......................................................................................................................................331

Important Points to Remember.............................................................................................................................. 331

Enabling the FCoE Transit Feature........................................................................................................................332

Enable FIP Snooping on VLANs.............................................................................................................................333

Congure the FC-MAP Value................................................................................................................................ 333

Congure a Port for a Bridge-to-Bridge Link.......................................................................................................333

Congure a Port for a Bridge-to-FCF Link...........................................................................................................333

Impact on Other Software Features..................................................................................................................... 333

FIP Snooping Restrictions...................................................................................................................................... 334

Conguring FIP Snooping.......................................................................................................................................334

Displaying FIP Snooping Information...........................................................................................................................335

FCoE Transit Conguration Example...........................................................................................................................340

16 FIPS Cryptography...................................................................................................................................342

Conguration Tasks....................................................................................................................................................... 342

Preparing the System....................................................................................................................................................342

Enabling FIPS Mode...................................................................................................................................................... 343

Generating Host-Keys...................................................................................................................................................343

Monitoring FIPS Mode Status......................................................................................................................................343

Disabling FIPS Mode..................................................................................................................................................... 344

17 Force10 Resilient Ring Protocol (FRRP)................................................................................................... 345

Protocol Overview.........................................................................................................................................................345

Ring Status............................................................................................................................................................... 346

Multiple FRRP Rings............................................................................................................................................... 346

Important FRRP Points........................................................................................................................................... 347

Important FRRP Concepts..................................................................................................................................... 348

Contents

11

Implementing FRRP.......................................................................................................................................................349

FRRP Conguration...................................................................................................................................................... 349

Creating the FRRP Group.......................................................................................................................................349

Conguring the Control VLAN...............................................................................................................................350

Conguring and Adding the Member VLANs....................................................................................................... 351

Setting the FRRP Timers........................................................................................................................................352

Clearing the FRRP Counters..................................................................................................................................352

Viewing the FRRP Conguration...........................................................................................................................352

Viewing the FRRP Information...............................................................................................................................352

Troubleshooting FRRP.................................................................................................................................................. 353

Conguration Checks..............................................................................................................................................353

Sample Conguration and Topology............................................................................................................................353

FRRP Support on VLT...................................................................................................................................................354

Example Scenario.................................................................................................................................................... 355

Important Points to Remember............................................................................................................................. 356

18 GARP VLAN Registration Protocol (GVRP)..............................................................................................357

Important Points to Remember....................................................................................................................................357

Congure GVRP............................................................................................................................................................ 358

Related Conguration Tasks...................................................................................................................................358

Enabling GVRP Globally................................................................................................................................................ 359

Enabling GVRP on a Layer 2 Interface........................................................................................................................359

Congure GVRP Registration...................................................................................................................................... 359

Congure a GARP Timer.............................................................................................................................................. 360

RPM Redundancy..........................................................................................................................................................360

19 High Availability (HA)............................................................................................................................... 362

Component Redundancy.............................................................................................................................................. 362

RPM Redundancy....................................................................................................................................................362

Automatic and Manual Stack Unit Failover.......................................................................................................... 364

Support for RPM Redundancy by Dell EMC Networking OS Version.............................................................. 365

Synchronization between Management and Standby Units..............................................................................365

Conguring RPM Redundancy.............................................................................................................................. 365

Online Insertion and Removal.......................................................................................................................................366

RPM Online Insertion and Removal.......................................................................................................................366

Linecard Online Insertion and Removal................................................................................................................. 367

Hitless Behavior............................................................................................................................................................. 368

Graceful Restart.............................................................................................................................................................368

Software Resiliency....................................................................................................................................................... 369

Software Component Health Monitoring............................................................................................................. 369

System Health Monitoring......................................................................................................................................369

Failure and Event Logging...................................................................................................................................... 369

Hot-Lock Behavior.........................................................................................................................................................370

Process Restartability....................................................................................................................................................370

Enabling Process Restartability..............................................................................................................................370

12

Contents

20 Internet Group Management Protocol (IGMP)......................................................................................... 372

IGMP Implementation Information...............................................................................................................................372

IGMP Protocol Overview.............................................................................................................................................. 372

IGMP Version 2........................................................................................................................................................ 372

IGMP Version 3.........................................................................................................................................................374

Congure IGMP..............................................................................................................................................................377

Related Conguration Tasks................................................................................................................................... 377

Viewing IGMP Enabled Interfaces............................................................................................................................... 378

Selecting an IGMP Version........................................................................................................................................... 378

Viewing IGMP Groups................................................................................................................................................... 379

Adjusting Timers.............................................................................................................................................................379

Adjusting Query and Response Timers................................................................................................................. 379

Enabling IGMP Immediate-Leave................................................................................................................................ 380

IGMP Snooping..............................................................................................................................................................380

IGMP Snooping Implementation Information.......................................................................................................380

Conguring IGMP Snooping................................................................................................................................... 381

Removing a Group-Port Association......................................................................................................................381

Disabling Multicast Flooding...................................................................................................................................382

Specifying a Port as Connected to a Multicast Router...................................................................................... 382

Conguring the Switch as Querier........................................................................................................................ 382

Fast Convergence after MSTP Topology Changes...................................................................................................383

Egress Interface Selection (EIS) for HTTP and IGMP Applications........................................................................383

Protocol Separation.................................................................................................................................................384

Enabling and Disabling Management Egress Interface Selection...................................................................... 385

Handling of Management Route Conguration................................................................................................... 385

Handling of Switch-Initiated Trac....................................................................................................................... 386

Handling of Switch-Destined Trac......................................................................................................................387

Handling of Transit Trac (Trac Separation).....................................................................................................387

Mapping of Management Applications and Trac Type..................................................................................... 387

Behavior of Various Applications for Switch-Initiated Trac ............................................................................ 388

Behavior of Various Applications for Switch-Destined Trac ...........................................................................389

Interworking of EIS With Various Applications.....................................................................................................390

Designating a Multicast Router Interface....................................................................................................................391

21 Interfaces................................................................................................................................................. 392

Basic Interface Conguration.......................................................................................................................................392

Advanced Interface Conguration...............................................................................................................................392

Interface Types...............................................................................................................................................................393

View Basic Interface Information.................................................................................................................................393

Resetting an Interface to its Factory Default State...................................................................................................395

Enabling Energy Ecient Ethernet............................................................................................................................. 396

View EEE Information................................................................................................................................................... 396

Clear EEE Counters.......................................................................................................................................................400

Enabling a Physical Interface........................................................................................................................................ 401

Physical Interfaces......................................................................................................................................................... 401

Contents

13

Conguration Task List for Physical Interfaces....................................................................................................402

Overview of Layer Modes...................................................................................................................................... 402

Conguring Layer 2 (Data Link) Mode..................................................................................................................402

Conguring Layer 2 (Interface) Mode.................................................................................................................. 403

Conguring Layer 3 (Network) Mode...................................................................................................................403

Conguring Layer 3 (Interface) Mode.................................................................................................................. 404

Egress Interface Selection (EIS)..................................................................................................................................404

Important Points to Remember............................................................................................................................. 404

Conguring EIS........................................................................................................................................................405

Management Interfaces................................................................................................................................................405

Conguring Management Interfaces.................................................................................................................... 405

Conguring a Management Interface on an Ethernet Port................................................................................407

VLAN Interfaces.............................................................................................................................................................407

Loopback Interfaces......................................................................................................................................................408

Null Interfaces................................................................................................................................................................ 409

Port Channel Interfaces................................................................................................................................................409

Port Channel Denition and Standards.................................................................................................................409

Port Channel Benets.............................................................................................................................................409

Port Channel Implementation................................................................................................................................ 409

Interfaces in Port Channels.....................................................................................................................................410

Conguration Tasks for Port Channel Interfaces................................................................................................. 410

Creating a Port Channel...........................................................................................................................................411

Adding a Physical Interface to a Port Channel...................................................................................................... 411

Reassigning an Interface to a New Port Channel.................................................................................................413

Conguring the Minimum Oper Up Links in a Port Channel............................................................................... 413

Adding or Removing a Port Channel from a VLAN.............................................................................................. 414

Assigning an IP Address to a Port Channel...........................................................................................................415

Deleting or Disabling a Port Channel......................................................................................................................415

Load Balancing Through Port Channels................................................................................................................ 415

Changing the Hash Algorithm.................................................................................................................................416

Bulk Conguration.......................................................................................................................................................... 417

Interface Range.........................................................................................................................................................417

Bulk Conguration Examples...................................................................................................................................417

Dening Interface Range Macros.................................................................................................................................419

Dene the Interface Range..................................................................................................................................... 419

Choosing an Interface-Range Macro.....................................................................................................................419

Monitoring and Maintaining Interfaces........................................................................................................................ 419

Maintenance Using TDR......................................................................................................................................... 420

Conguring wavelength for 10–Gigabit SFP+ optics.................................................................................................421

Link Dampening.............................................................................................................................................................. 421

Important Points to Remember..............................................................................................................................422

Conguration Example of Link Dampening...........................................................................................................422

Enabling Link Dampening........................................................................................................................................424

Link Bundle Monitoring................................................................................................................................................. 425

Using Ethernet Pause Frames for Flow Control........................................................................................................ 426

14

Contents

Enabling Pause Frames........................................................................................................................................... 426

Congure the MTU Size on an Interface.................................................................................................................... 427

Port-Pipes.......................................................................................................................................................................428

Auto-Negotiation on Ethernet Interfaces................................................................................................................... 428

Setting the Speed of Ethernet Interfaces............................................................................................................ 428

Set Auto-Negotiation Options................................................................................................................................429

View Advanced Interface Information.........................................................................................................................430

Conguring the Interface Sampling Size............................................................................................................... 431

Conguring the Trac Sampling Size Globally...........................................................................................................432

Dynamic Counters......................................................................................................................................................... 433

Clearing Interface Counters....................................................................................................................................434

Compressing Conguration Files................................................................................................................................. 434

22 Internet Protocol Security (IPSec)...........................................................................................................438

Conguring IPSec .........................................................................................................................................................438

23 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

Congure Static Routes for the Management Interface.......................................................................................... 443

IPv4 Path MTU Discovery Overview.......................................................................................................................... 444

Packet handling during MTU mismatch................................................................................................................444

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

Conguring the ICMP Source Interface............................................................................................................... 444

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

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

Resolution of Host Names............................................................................................................................................445

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

Specifying the Local System Domain and a List of Domains................................................................................... 446

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

ARP..................................................................................................................................................................................447

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

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

Enabling Proxy ARP.......................................................................................................................................................448

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

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

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

ARP Learning via ARP Request................................................................................................................................... 449

Conguring ARP Retries...............................................................................................................................................450

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

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

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

UDP Helper..................................................................................................................................................................... 451

Contents

15

Congure UDP Helper............................................................................................................................................. 451

Important Points to Remember............................................................................................................................. 452

Enabling UDP Helper.....................................................................................................................................................452

Conguring a Broadcast Address................................................................................................................................ 452

Congurations Using UDP Helper............................................................................................................................... 453

UDP Helper with Broadcast-All Addresses.................................................................................................................453

UDP Helper with Subnet Broadcast Addresses.........................................................................................................454

UDP Helper with Congured Broadcast Addresses..................................................................................................454

UDP Helper with No Congured Broadcast Addresses............................................................................................455

Troubleshooting UDP Helper........................................................................................................................................455

24 IPv6 Routing............................................................................................................................................456

Protocol Overview.........................................................................................................................................................456

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

Stateless Autoconguration....................................................................................................................................457

IPv6 Headers............................................................................................................................................................457

IPv6 Header Fields...................................................................................................................................................458

Extension Header Fields......................................................................................................................................... 460

Addressing.................................................................................................................................................................461

Implementing IPv6 with Dell EMC Networking OS................................................................................................... 462

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

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

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

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

Conguration Task List for IPv6 RDNSS.................................................................................................................... 465

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

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

Displaying IPv6 RDNSS Information......................................................................................................................467

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

Conguration Tasks for IPv6........................................................................................................................................ 468

Adjusting Your CAM-Prole....................................................................................................................................468

Assigning an IPv6 Address to an Interface...........................................................................................................469

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

Conguring Telnet with IPv6.................................................................................................................................. 470

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

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

Displaying an IPv6 Interface Information............................................................................................................... 471

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

Showing the Running-Conguration for an Interface......................................................................................... 473

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

Disabling ND Entry Timeout................................................................................................................................... 473

Conguring IPv6 RA Guard...........................................................................................................................................474

Conguring IPv6 RA Guard on an Interface.........................................................................................................475

Monitoring IPv6 RA Guard......................................................................................................................................476

25 iSCSI Optimization...................................................................................................................................477

16

Contents

iSCSI Optimization Overview....................................................................................................................................... 477

Monitoring iSCSI Trac Flows...............................................................................................................................479

Application of Quality of Service to iSCSI Trac Flows......................................................................................479

Information Monitored in iSCSI Trac Flows....................................................................................................... 479

Detection and Auto-Conguration for Dell EqualLogic Arrays...........................................................................480

Conguring Detection and Ports for Dell Compellent Arrays.............................................................................480

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer..................................................................481

Enable and Disable iSCSI Optimization..................................................................................................................481

Default iSCSI Optimization Values...............................................................................................................................482

iSCSI Optimization Prerequisites................................................................................................................................. 482

Conguring iSCSI Optimization....................................................................................................................................482

Displaying iSCSI Optimization Information..................................................................................................................484

26 Intermediate System to Intermediate System.......................................................................................... 486

IS-IS Protocol Overview............................................................................................................................................... 486

IS-IS Addressing.............................................................................................................................................................486

Multi-Topology IS-IS.......................................................................................................................................................487

Transition Mode........................................................................................................................................................487

Interface Support.....................................................................................................................................................488

Adjacencies...............................................................................................................................................................488

Graceful Restart.............................................................................................................................................................488

Timers........................................................................................................................................................................488

Implementation Information..........................................................................................................................................488

Conguration Information.............................................................................................................................................489

Conguration Tasks for IS-IS..................................................................................................................................490

Conguring the Distance of a Route.....................................................................................................................497

Changing the IS-Type.............................................................................................................................................. 498

Redistributing IPv4 Routes.....................................................................................................................................500

Redistributing IPv6 Routes..................................................................................................................................... 501

Conguring Authentication Passwords.................................................................................................................502

Setting the Overload Bit.........................................................................................................................................502

Debugging IS-IS.......................................................................................................................................................503

IS-IS Metric Styles.........................................................................................................................................................504

Congure Metric Values............................................................................................................................................... 504

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

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

Leaks from One Level to Another..........................................................................................................................506

Sample Congurations.................................................................................................................................................. 507

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

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

Contents

17

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

28 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

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

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

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

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

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

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..................................................................................................................................................546

18

Contents

CONFIGURATION versus INTERFACE Congurations............................................................................................ 546

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

Disabling and Undoing LLDP.................................................................................................................................. 547

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

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

Viewing Information Advertised by Adjacent LLDP Neighbors................................................................................548

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

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

Conguring Transmit and Receive Mode.................................................................................................................... 551

Conguring the Time to Live Value............................................................................................................................. 552

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

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

30 Microsoft Network Load Balancing..........................................................................................................559

NLB Unicast Mode Scenario........................................................................................................................................559

NLB Multicast Mode Scenario.....................................................................................................................................559

Limitations of the NLB Feature....................................................................................................................................560

Microsoft Clustering......................................................................................................................................................560

Enable and Disable VLAN Flooding ............................................................................................................................ 560

Conguring a Switch for NLB .....................................................................................................................................560

Enabling a Switch for Multicast NLB.....................................................................................................................561

31 Multicast Source Discovery Protocol (MSDP)..........................................................................................562

Protocol Overview.........................................................................................................................................................562

Anycast RP.....................................................................................................................................................................563

Implementation Information......................................................................................................................................... 564

Congure Multicast Source Discovery Protocol........................................................................................................564

Related Conguration Tasks...................................................................................................................................564

Enable MSDP.................................................................................................................................................................568

Manage the Source-Active Cache..............................................................................................................................569

Viewing the Source-Active Cache........................................................................................................................ 569

Limiting the Source-Active Cache.........................................................................................................................569

Clearing the Source-Active Cache........................................................................................................................ 570

Enabling the Rejected Source-Active Cache....................................................................................................... 570

Accept Source-Active Messages that Fail the RFP Check......................................................................................570

Specifying Source-Active Messages...........................................................................................................................573

Limiting the Source-Active Messages from a Peer................................................................................................... 574

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

Preventing MSDP from Caching a Remote Source.................................................................................................. 575

Preventing MSDP from Advertising a Local Source..................................................................................................575

Logging Changes in Peership States...........................................................................................................................576

Terminating a Peership..................................................................................................................................................576

Clearing Peer Statistics................................................................................................................................................. 577

Debugging MSDP...........................................................................................................................................................577

MSDP with Anycast RP................................................................................................................................................578

Conguring Anycast RP................................................................................................................................................579

Contents

19

Reducing Source-Active Message Flooding........................................................................................................ 580

Specifying the RP Address Used in SA Messages..............................................................................................580

MSDP Sample Congurations......................................................................................................................................582

32 Multiple Spanning Tree Protocol (MSTP)................................................................................................ 585

Protocol Overview.........................................................................................................................................................585

Spanning Tree Variations.............................................................................................................................................. 586

Implementation Information................................................................................................................................... 586

Congure Multiple Spanning Tree Protocol................................................................................................................586

Related Conguration Tasks................................................................................................................................... 587

Enable Multiple Spanning Tree Globally.......................................................................................................................587

Adding and Removing Interfaces................................................................................................................................. 587

Creating Multiple Spanning Tree Instances................................................................................................................ 588

Inuencing MSTP Root Selection................................................................................................................................589

Interoperate with Non-Dell Bridges.............................................................................................................................589

Changing the Region Name or Revision.....................................................................................................................590

Modifying Global Parameters.......................................................................................................................................590

Modifying the Interface Parameters............................................................................................................................ 591

Conguring an EdgePort.............................................................................................................................................. 592

Flush MAC Addresses after a Topology Change....................................................................................................... 593

MSTP Sample Congurations......................................................................................................................................593

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

CongurationSFTOS Example Running-Conguration.......................................................................................594

Debugging and Verifying MSTP Congurations.........................................................................................................597

33 Multicast Features...................................................................................................................................599

Enabling IP Multicast.....................................................................................................................................................599

Implementation Information......................................................................................................................................... 599

Multicast Policies...........................................................................................................................................................600

IPv4 Multicast Policies............................................................................................................................................600

Understanding Multicast Traceroute (mtrace)...........................................................................................................607

Important Points to Remember............................................................................................................................. 608

Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 608

Supported Error Codes.................................................................................................................................................609

mtrace Scenarios............................................................................................................................................................610

34 Object Tracking........................................................................................................................................ 616

Object Tracking Overview............................................................................................................................................. 616

Track Layer 2 Interfaces...........................................................................................................................................617

Track Layer 3 Interfaces...........................................................................................................................................617

Track IPv4 and IPv6 Routes....................................................................................................................................618

Set Tracking Delays..................................................................................................................................................619

VRRP Object Tracking............................................................................................................................................. 619

Object Tracking Conguration...................................................................................................................................... 619

Tracking a Layer 2 Interface....................................................................................................................................619

Tracking a Layer 3 Interface................................................................................................................................... 620

20

Contents

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Dell PowerSwitch S4820T Owner's manual

Dell PowerSwitch S4820T Owner's manual

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