Dell PowerSwitch S4048-ON Owner's manual

Dell Conguration Guide for the S4048–ON

System

9.14.2.0

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.

2019 - 04

Rev. A00

Contents

1 About this Guide...........................................................................................................................................38

Audience............................................................................................................................................................................38

Conventions......................................................................................................................................................................38

Related Documents......................................................................................................................................................... 38

2 Conguration Fundamentals........................................................................................................................ 39

Accessing the Command Line........................................................................................................................................39

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

Navigating CLI Modes................................................................................................................................................41

The do Command............................................................................................................................................................ 44

Undoing Commands........................................................................................................................................................ 44

Obtaining Help..................................................................................................................................................................45

Entering and Editing Commands................................................................................................................................... 45

Command History............................................................................................................................................................46

Filtering show Command Outputs.................................................................................................................................46

Example of the grep Keyword.................................................................................................................................. 46

Multiple Users in Conguration Mode........................................................................................................................... 47

3 Getting Started............................................................................................................................................48

Console Access................................................................................................................................................................49

Serial Console.............................................................................................................................................................49

Accessing the CLI Interface and Running Scripts Using SSH....................................................................................50

Entering CLI commands Using an SSH Connection..............................................................................................50

Executing Local CLI Scripts Using an SSH Connection........................................................................................50

Default Conguration....................................................................................................................................................... 51

Conguring a Host Name................................................................................................................................................ 51

Accessing the System Remotely.................................................................................................................................... 51

Accessing the System Remotely.............................................................................................................................. 51

Congure the Management Port IP Address..........................................................................................................51

Congure a Management Route..............................................................................................................................52

Conguring a Username and Password..................................................................................................................52

Conguring the Enable Password..................................................................................................................................53

Conguration File Management.....................................................................................................................................53

Copy Files to and from the System......................................................................................................................... 54

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

Save the Running-Conguration..............................................................................................................................56

Congure the Overload Bit for a Startup Scenario................................................................................................57

Viewing Files............................................................................................................................................................... 57

Compressing Conguration Files............................................................................................................................. 58

Managing the File System.............................................................................................................................................. 60

Enabling Software Features on Devices Using a Command Option.......................................................................... 61

View Command History................................................................................................................................................... 61

Contents

3

Upgrading Dell EMC Networking OS............................................................................................................................ 62

Verify Software Images Before Installation...................................................................................................................62

Using HTTP for File Transfers........................................................................................................................................ 63

4 Management................................................................................................................................................64

Conguring Privilege Levels............................................................................................................................................64

Creating a Custom Privilege Level...........................................................................................................................65

Removing a Command from EXEC Mode.............................................................................................................. 65

Moving a Command from EXEC Privilege Mode to EXEC Mode....................................................................... 65

Allowing Access to CONFIGURATION Mode Commands....................................................................................65

Allowing Access to Dierent Modes........................................................................................................................65

Applying a Privilege Level to a Username............................................................................................................... 67

Applying a Privilege Level to a Terminal Line...........................................................................................................67

Conguring Logging.........................................................................................................................................................67

Audit and Security Logs............................................................................................................................................ 68

Conguring Logging Format ...................................................................................................................................70

Display the Logging Buer and the Logging Conguration.................................................................................. 70

Setting Up a Secure Connection to a Syslog Server..............................................................................................71

Sending System Messages to a Syslog Server...................................................................................................... 72

Track Login Activity..........................................................................................................................................................72

Restrictions for Tracking Login Activity...................................................................................................................72

Conguring Login Activity Tracking......................................................................................................................... 72

Display Login Statistics..............................................................................................................................................73

Limit Concurrent Login Sessions....................................................................................................................................74

Restrictions for Limiting the Number of Concurrent Sessions.............................................................................74

Conguring Concurrent Session Limit.....................................................................................................................75

Enabling the System to Clear Existing Sessions.................................................................................................... 75

Enabling Secured CLI Mode........................................................................................................................................... 76

Log Messages in the Internal Buer..............................................................................................................................76

Conguration Task List for System Log Management.......................................................................................... 76

Disabling System Logging............................................................................................................................................... 76

Sending System Messages to a Syslog Server............................................................................................................ 77

Conguring a UNIX System as a Syslog Server.....................................................................................................77

Changing System Logging Settings...............................................................................................................................77

Display the Logging Buer and the Logging Conguration........................................................................................ 78

Conguring a UNIX Logging Facility Level....................................................................................................................79

Synchronizing Log Messages.........................................................................................................................................80

Enabling Timestamp on Syslog Messages....................................................................................................................80

File Transfer Services....................................................................................................................................................... 81

Conguration Task List for File Transfer Services...................................................................................................81

Enabling the FTP Server............................................................................................................................................81

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

Conguring FTP Client Parameters.........................................................................................................................82

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

Denying and Permitting Access to a Terminal Line................................................................................................83

Conguring Login Authentication for Terminal Lines.............................................................................................84

4

Contents

Setting Timeout for EXEC Privilege Mode...................................................................................................................85

Using Telnet to get to Another Network Device..........................................................................................................85

Lock CONFIGURATION Mode....................................................................................................................................... 86

Viewing the Conguration Lock Status...................................................................................................................86

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

Restoring the Factory Default Settings.........................................................................................................................87

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

Restoring Factory Default Environment Variables................................................................................................. 88

Viewing the Reason for Last System Reboot.............................................................................................................. 89

5 802.1X......................................................................................................................................................... 90

Port-Authentication Process.......................................................................................................................................... 92

EAP over RADIUS......................................................................................................................................................92

Conguring 802.1X...........................................................................................................................................................93

Related Conguration Tasks..................................................................................................................................... 93

Important Points to Remember......................................................................................................................................93

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

Conguring dot1x Prole ................................................................................................................................................95

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

Conguring the Static MAB and MAB Prole .............................................................................................................96

Conguring Critical VLAN ..............................................................................................................................................97

Conguring Request Identity Re-Transmissions...........................................................................................................98

Conguring a Quiet Period after a Failed Authentication..................................................................................... 98

Forcibly Authorizing or Unauthorizing a Port............................................................................................................... 99

Re-Authenticating a Port.............................................................................................................................................. 100

Conguring Timeouts..................................................................................................................................................... 101

Conguring Dynamic VLAN Assignment with Port Authentication......................................................................... 102

Guest and Authentication-Fail VLANs.........................................................................................................................103

Conguring a Guest VLAN......................................................................................................................................103

Conguring an Authentication-Fail VLAN............................................................................................................. 103

6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM).................................. 105

Optimizing CAM Utilization During the Attachment of ACLs to VLANs................................................................. 105

Guidelines for Conguring ACL VLAN Groups........................................................................................................... 106

Conguring ACL VLAN Groups and Conguring FP Blocks for VLAN Parameters...............................................106

Conguring ACL VLAN Groups.............................................................................................................................. 106

Conguring FP Blocks for VLAN Parameters....................................................................................................... 107

Viewing CAM Usage...................................................................................................................................................... 108

Allocating FP Blocks for VLAN Processes.................................................................................................................. 109

Unied Forwarding Table (UFT) Modes.......................................................................................................................110

Conguring UFT Modes...........................................................................................................................................110

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

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

CAM Usage................................................................................................................................................................113

Implementing ACLs on Dell EMC Networking OS.................................................................................................113

Contents

5

Important Points to Remember.....................................................................................................................................115

Conguration Task List for Route Maps.................................................................................................................115

Conguring Match Routes....................................................................................................................................... 117

Conguring Set Conditions......................................................................................................................................119

Congure a Route Map for Route Redistribution.................................................................................................120

Congure a Route Map for Route Tagging........................................................................................................... 120

Continue Clause........................................................................................................................................................ 121

IP Fragment Handling..................................................................................................................................................... 121

IP Fragments ACL Examples....................................................................................................................................121

Layer 4 ACL Rules Examples...................................................................................................................................122

Congure a Standard IP ACL........................................................................................................................................ 122

Conguring a Standard IP ACL Filter..................................................................................................................... 123

Congure an Extended IP ACL..................................................................................................................................... 124

Conguring Filters with a Sequence Number....................................................................................................... 124

Conguring Filters Without a Sequence Number.................................................................................................126

Congure Layer 2 and Layer 3 ACLs............................................................................................................................126

Assign an IP ACL to an Interface.................................................................................................................................. 127

Applying an IP ACL......................................................................................................................................................... 127

Counting ACL Hits....................................................................................................................................................128

Congure Ingress ACLs................................................................................................................................................. 128

Congure Egress ACLs..................................................................................................................................................129

Applying Egress Layer 3 ACLs (Control-Plane).................................................................................................... 130

IP Prex Lists.................................................................................................................................................................. 130

Implementation Information..................................................................................................................................... 131

Conguration Task List for Prex Lists...................................................................................................................131

ACL Remarks.................................................................................................................................................................. 134

Conguring a Remark.............................................................................................................................................. 134

Deleting a Remark.................................................................................................................................................... 135

ACL Resequencing......................................................................................................................................................... 136

Resequencing an ACL or Prex List.......................................................................................................................136

Route Maps..................................................................................................................................................................... 137

Implementation Information.....................................................................................................................................137

Logging of ACL Processes............................................................................................................................................ 138

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

Conguring ACL Logging.........................................................................................................................................139

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

Behavior of Flow-Based Monitoring.......................................................................................................................140

Enabling Flow-Based Monitoring.............................................................................................................................141

Conguring UDF ACL.....................................................................................................................................................142

Conguring IP Mirror Access Group............................................................................................................................ 145

Sample Conguration...............................................................................................................................................146

Example of viewing IP mirror–access–group applied to an Interface................................................................146

8 Bidirectional Forwarding Detection (BFD).................................................................................................. 147

How BFD Works............................................................................................................................................................. 147

BFD Packet Format..................................................................................................................................................148

6

Contents

BFD Sessions............................................................................................................................................................ 149

BFD Three-Way Handshake....................................................................................................................................150

Session State Changes............................................................................................................................................152

Important Points to Remember.................................................................................................................................... 152

Congure BFD................................................................................................................................................................ 153

Congure BFD for Physical Ports...........................................................................................................................153

Congure BFD for Static Routes............................................................................................................................155

Congure BFD for IPv6 Static Routes...................................................................................................................158

Congure BFD for OSPF..........................................................................................................................................161

Congure BFD for OSPFv3.....................................................................................................................................166

Congure BFD for IS-IS...........................................................................................................................................169

Congure BFD for BGP............................................................................................................................................171

Congure BFD for VRRP.........................................................................................................................................179

Conguring Protocol Liveness.................................................................................................................................181

9 Border Gateway Protocol (BGP)................................................................................................................ 182

BGP IP version 4 (BGPv4) Overview.......................................................................................................................... 182

BGP Autonomous Systems.....................................................................................................................................182

AS4 Number Representation.................................................................................................................................. 184

Four-Byte AS Numbers............................................................................................................................................186

BGP router ID............................................................................................................................................................186

Sessions and Peers.................................................................................................................................................. 186

Establish a Session................................................................................................................................................... 187

BGP Attributes for selecting Best Path................................................................................................................. 187

Multiprotocol BGP....................................................................................................................................................192

BGP global and address family conguration........................................................................................................193

Implement BGP with Dell EMC Networking OS...................................................................................................195

Conguration Information........................................................................................................................................198

Basic BGP conguration tasks......................................................................................................................................198

Prerequisite for conguring a BGP network......................................................................................................... 198

Restrictions............................................................................................................................................................... 199

Enabling BGP............................................................................................................................................................ 199

Enabling four-byte autonomous system numbers................................................................................................201

Changing a BGP router ID...................................................................................................................................... 202

Conguring AS4 Number Representations.......................................................................................................... 202

Conguring a BGP peer..........................................................................................................................................204

Example-Conguring BGP routing between peers............................................................................................. 205

BGP peer group....................................................................................................................................................... 206

Advanced BGP conguration tasks..............................................................................................................................212

Route-refresh and Soft-reconguration................................................................................................................213

Aggregating Routes..................................................................................................................................................215

Filtering BGP............................................................................................................................................................. 217

Conguring BGP Fast Fall-Over............................................................................................................................ 224

Conguring Passive Peering...................................................................................................................................225

Enabling Graceful Restart.......................................................................................................................................226

Redistributing Routes.............................................................................................................................................. 227

Contents

7

Redistributing iBGP Routes into IGP.....................................................................................................................228

Enabling Additional Paths....................................................................................................................................... 230

Conguring IP Community Lists............................................................................................................................. 231

Conguring an IP Extended Community List....................................................................................................... 232

Congure BGP attributes....................................................................................................................................... 233

Enabling Multipath................................................................................................................................................... 237

Route Reectors......................................................................................................................................................238

Enabling Route Flap Dampening............................................................................................................................ 239

Changing BGP keepalive and hold timers.............................................................................................................242

Setting the extended timer.....................................................................................................................................243

Enabling or disabling BGP neighbors.....................................................................................................................243

Route Map Continue............................................................................................................................................... 244

Conguring BGP Confederations.......................................................................................................................... 245

Conguring a BGP VRF address family.................................................................................................................246

Maintaining Existing AS Numbers During an AS Migration.................................................................................247

Allowing an AS Number to Appear in its Own AS Path.......................................................................................248

Enabling MBGP Congurations............................................................................................................................. 249

MBGP support for IPv6..........................................................................................................................................249

Conguring IPv6 MBGP between peers.............................................................................................................. 249

Example-Conguring IPv4 and IPv6 neighbors................................................................................................... 250

Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor......................................... 252

BGP Regular Expression Optimization..................................................................................................................254

Debugging BGP....................................................................................................................................................... 254

10 Content Addressable Memory (CAM).......................................................................................................257

CAM Allocation...............................................................................................................................................................257

Test CAM Usage............................................................................................................................................................259

View CAM-ACL Settings.............................................................................................................................................. 259

View CAM Usage............................................................................................................................................................261

Conguring CAM Threshold and Silence Period.........................................................................................................261

Setting CAM Threshold and Silence Period.......................................................................................................... 261

CAM Optimization......................................................................................................................................................... 262

Troubleshoot CAM Proling..........................................................................................................................................263

QoS CAM Region Limitation...................................................................................................................................263

11 Control Plane Policing (CoPP).................................................................................................................. 264

Congure Control Plane Policing................................................................................................................................. 265

Conguring CoPP for Protocols............................................................................................................................ 266

Conguring CoPP for CPU Queues...................................................................................................................... 268

CoPP for OSPFv3 Packets.....................................................................................................................................269

Conguring CoPP for OSPFv3...............................................................................................................................272

Displaying CoPP Conguration ............................................................................................................................. 272

12 Data Center Bridging (DCB)..................................................................................................................... 275

Ethernet Enhancements in Data Center Bridging......................................................................................................275

Priority-Based Flow Control....................................................................................................................................276

8

Contents

Enhanced Transmission Selection.......................................................................................................................... 277

Data Center Bridging Exchange Protocol (DCBx)...............................................................................................278

Data Center Bridging in a Trac Flow...................................................................................................................279

Enabling Data Center Bridging..................................................................................................................................... 279

DCB Maps and its Attributes..................................................................................................................................280

Data Center Bridging: Default Conguration.............................................................................................................. 281

Conguring Priority-Based Flow Control.....................................................................................................................281

Conguring Lossless Queues................................................................................................................................. 282

Conguring PFC in a DCB Map................................................................................................................................... 283

PFC Conguration Notes........................................................................................................................................283

PFC Prerequisites and Restrictions....................................................................................................................... 284

Applying a DCB Map on a Port.................................................................................................................................... 284

Conguring PFC without a DCB Map.........................................................................................................................285

Conguring Lossless QueuesExample:..................................................................................................................285

Priority-Based Flow Control Using Dynamic Buer Method....................................................................................287

Pause and Resume of Trac..................................................................................................................................287

Buer Sizes for Lossless or PFC Packets.............................................................................................................287

Behavior of Tagged Packets.........................................................................................................................................288

Conguration Example for DSCP and PFC Priorities................................................................................................288

Using PFC to Manage Converged Ethernet Trac...................................................................................................289

Congure Enhanced Transmission Selection..............................................................................................................289

ETS Prerequisites and Restrictions....................................................................................................................... 290

Creating an ETS Priority Group............................................................................................................................. 290

ETS Operation with DCBx.......................................................................................................................................291

Conguring Bandwidth Allocation for DCBx CIN................................................................................................. 291

Conguring ETS in a DCB Map..............................................................................................................................292

Hierarchical Scheduling in ETS Output Policies......................................................................................................... 293

Using ETS to Manage Converged Ethernet Trac...................................................................................................294

Applying DCB Policies in a Switch Stack.................................................................................................................... 294

Congure a DCBx Operation........................................................................................................................................294

DCBx Operation.......................................................................................................................................................295

DCBx Port Roles......................................................................................................................................................295

DCB Conguration Exchange................................................................................................................................ 296

Conguration Source Election................................................................................................................................297

Propagation of DCB Information............................................................................................................................297

Auto-Detection and Manual Conguration of the DCBx Version.......................................................................297

DCBx Example......................................................................................................................................................... 298

DCBx Prerequisites and Restrictions.....................................................................................................................298

Conguring DCBx....................................................................................................................................................299

Verifying the DCB Conguration................................................................................................................................. 302

QoS dot1p Trac Classication and Queue Assignment...........................................................................................312

Conguring the Dynamic Buer Method.................................................................................................................... 313

Sample DCB Conguration............................................................................................................................................314

PFC and ETS Conguration Command Examples............................................................................................... 315

13 Dynamic Host Conguration Protocol (DHCP)..........................................................................................316

Contents

9

DHCP Packet Format and Options.............................................................................................................................. 316

Assign an IP Address using DHCP................................................................................................................................318

Implementation Information.......................................................................................................................................... 319

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

Conguring the Server for Automatic Address Allocation..................................................................................320

Specifying a Default Gateway.................................................................................................................................321

Congure a Method of Hostname Resolution......................................................................................................322

Using DNS for Address Resolution........................................................................................................................322

Using NetBIOS WINS for Address Resolution..................................................................................................... 322

Creating Manual Binding Entries............................................................................................................................322

Debugging the DHCP Server................................................................................................................................. 323

Using DHCP Clear Commands...............................................................................................................................323

Congure the System to be a Relay Agent................................................................................................................ 323

Congure the System to be a DHCP Client............................................................................................................... 325

Conguring the DHCP Client System...................................................................................................................325

DHCP Client on a Management Interface............................................................................................................ 327

DHCP Client Operation with Other Features....................................................................................................... 327

DHCP Relay When DHCP Server and Client are in Dierent VRFs........................................................................ 328

Conguring Route Leaking between VRFs on DHCP Relay Agent................................................................... 328

Non-default VRF conguration for DHCPv6 helper address................................................................................... 329

Conguring DHCP relay source interface...................................................................................................................330

Global DHCP relay source IPv4 or IPv6 conguration ....................................................................................... 330

Interface level DHCP relay source IPv4 or IPv6 conguration ..........................................................................330

Congure the System for User Port Stacking (Option 230)....................................................................................332

Congure Secure DHCP............................................................................................................................................... 332

Option 82..................................................................................................................................................................332

DHCPv6 relay agent options.................................................................................................................................. 333

DHCP Snooping.......................................................................................................................................................333

Drop DHCP Packets on Snooped VLANs Only....................................................................................................338

Dynamic ARP Inspection.........................................................................................................................................338

Conguring Dynamic ARP Inspection................................................................................................................... 339

Source Address Validation............................................................................................................................................ 340

Enabling IP Source Address Validation..................................................................................................................340

DHCP MAC Source Address Validation................................................................................................................. 341

Enabling IP+MAC Source Address Validation........................................................................................................341

Viewing the Number of SAV Dropped Packets....................................................................................................342

Clearing the Number of SAV Dropped Packets................................................................................................... 342

14 Equal Cost Multi-Path (ECMP)................................................................................................................ 343

ECMP for Flow-Based Anity.....................................................................................................................................343

Conguring the Hash Algorithm............................................................................................................................ 343

Enabling Deterministic ECMP Next Hop.............................................................................................................. 343

Conguring the Hash Algorithm Seed.................................................................................................................. 344

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

Managing ECMP Group Paths...............................................................................................................................345

Creating an ECMP Group Bundle..........................................................................................................................345

10

Contents

Modifying the ECMP Group Threshold.................................................................................................................345

RTAG7.............................................................................................................................................................................346

Flow-based Hashing for ECMP....................................................................................................................................347

15 FIP Snooping............................................................................................................................................350

Fibre Channel over Ethernet........................................................................................................................................350

Ensure Robustness in a Converged Ethernet Network............................................................................................350

FIP Snooping on Ethernet Bridges.............................................................................................................................. 352

FIP Snooping in a Switch Stack...................................................................................................................................354

Using FIP Snooping....................................................................................................................................................... 354

FIP Snooping Prerequisites.....................................................................................................................................354

Important Points to Remember............................................................................................................................. 354

Enabling the FCoE Transit Feature........................................................................................................................355

Enable FIP Snooping on VLANs.............................................................................................................................356

Congure the FC-MAP Value................................................................................................................................ 356

Congure a Port for a Bridge-to-Bridge Link.......................................................................................................356

Congure a Port for a Bridge-to-FCF Link...........................................................................................................356

Impact on Other Software Features..................................................................................................................... 356

FIP Snooping Restrictions.......................................................................................................................................357

Conguring FIP Snooping.......................................................................................................................................357

Displaying FIP Snooping Information...........................................................................................................................358

FCoE Transit Conguration Example...........................................................................................................................363

16 Flex Hash and Optimized Boot-Up............................................................................................................365

Flex Hash Capability Overview.................................................................................................................................... 365

Conguring the Flex Hash Mechanism.......................................................................................................................365

Conguring Fast Boot and LACP Fast Switchover...................................................................................................366

Optimizing the Boot Time.............................................................................................................................................366

Booting Process When Optimized Boot Time Mechanism is Enabled..............................................................366

Guidelines for Conguring Optimized Booting Mechanism................................................................................ 367

Interoperation of Applications with Fast Boot and System States..........................................................................368

LACP and IPv4 Routing.......................................................................................................................................... 368

LACP and IPv6 Routing..........................................................................................................................................368

BGP Graceful Restart............................................................................................................................................. 369

Cold Boot Caused by Power Cycling the System............................................................................................... 369

Unexpected Reload of the System........................................................................................................................369

Software Upgrade................................................................................................................................................... 369

LACP Fast Switchover............................................................................................................................................369

Changes to BGP Multipath.....................................................................................................................................370

Delayed Installation of ECMP Routes Into BGP...................................................................................................370

RDMA Over Converged Ethernet (RoCE) Overview................................................................................................370

Preserving 802.1Q VLAN Tag Value for Lite Subinterfaces....................................................................................... 371

17 FIPS Cryptography................................................................................................................................... 372

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

Preparing the System....................................................................................................................................................372

Contents

11

Enabling FIPS Mode...................................................................................................................................................... 373

Generating Host-Keys................................................................................................................................................... 373

Monitoring FIPS Mode Status......................................................................................................................................373

Disabling FIPS Mode......................................................................................................................................................374

18 Force10 Resilient Ring Protocol (FRRP)................................................................................................... 375

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

Ring Status............................................................................................................................................................... 376

Multiple FRRP Rings................................................................................................................................................376

Important FRRP Points........................................................................................................................................... 377

Important FRRP Concepts..................................................................................................................................... 378

Implementing FRRP.......................................................................................................................................................379

FRRP Conguration.......................................................................................................................................................379

Creating the FRRP Group.......................................................................................................................................379

Conguring the Control VLAN...............................................................................................................................380

Conguring and Adding the Member VLANs....................................................................................................... 381

Setting the FRRP Timers........................................................................................................................................382

Clearing the FRRP Counters..................................................................................................................................382

Viewing the FRRP Conguration...........................................................................................................................382

Viewing the FRRP Information...............................................................................................................................382

Troubleshooting FRRP.................................................................................................................................................. 383

Conguration Checks..............................................................................................................................................383

Sample Conguration and Topology............................................................................................................................383

FRRP Support on VLT...................................................................................................................................................384

Example Scenario.................................................................................................................................................... 385

Important Points to Remember............................................................................................................................. 386

19 GARP VLAN Registration Protocol (GVRP).............................................................................................. 387

Important Points to Remember....................................................................................................................................387

Congure GVRP............................................................................................................................................................ 388

Related Conguration Tasks...................................................................................................................................388

Enabling GVRP Globally................................................................................................................................................ 389

Enabling GVRP on a Layer 2 Interface........................................................................................................................389

Congure GVRP Registration...................................................................................................................................... 389

Congure a GARP Timer.............................................................................................................................................. 390

RPM Redundancy..........................................................................................................................................................390

20 High Availability (HA)...............................................................................................................................392

Component Redundancy.............................................................................................................................................. 392

Automatic and Manual Stack Unit Failover.......................................................................................................... 392

Synchronization between Management and Standby Units..............................................................................393

Forcing a Stack Unit Failover................................................................................................................................. 393

Disabling Auto-Reboot............................................................................................................................................ 394

Pre-Conguring a Stack Unit Slot............................................................................................................................... 394

Removing a Provisioned Logical Stack Unit............................................................................................................... 394

Hitless Behavior............................................................................................................................................................. 394

12

Contents

Graceful Restart............................................................................................................................................................ 395

Software Resiliency.......................................................................................................................................................395

Software Component Health Monitoring............................................................................................................. 395

System Health Monitoring......................................................................................................................................395

Failure and Event Logging...................................................................................................................................... 395

Hot-Lock Behavior.........................................................................................................................................................396

21 Internet Group Management Protocol (IGMP)..........................................................................................397

IGMP Implementation Information...............................................................................................................................397

IGMP Protocol Overview.............................................................................................................................................. 397

IGMP Version 2........................................................................................................................................................ 397

IGMP Version 3........................................................................................................................................................399

Congure IGMP............................................................................................................................................................. 402

Related Conguration Tasks...................................................................................................................................402

Viewing IGMP Enabled Interfaces............................................................................................................................... 403

Selecting an IGMP Version...........................................................................................................................................403

Viewing IGMP Groups...................................................................................................................................................404

Adjusting Timers............................................................................................................................................................ 404

Adjusting Query and Response Timers................................................................................................................. 404

Preventing a Host from Joining a Group.................................................................................................................... 405

Enabling IGMP Immediate-Leave................................................................................................................................ 408

IGMP Snooping..............................................................................................................................................................408

IGMP Snooping Implementation Information.......................................................................................................408

Conguring IGMP Snooping...................................................................................................................................408

Removing a Group-Port Association.....................................................................................................................409

Disabling Multicast Flooding...................................................................................................................................409

Specifying a Port as Connected to a Multicast Router....................................................................................... 410

Conguring the Switch as Querier.........................................................................................................................410

Fast Convergence after MSTP Topology Changes.................................................................................................... 411

Egress Interface Selection (EIS) for HTTP and IGMP Applications......................................................................... 411

Protocol Separation...................................................................................................................................................411

Enabling and Disabling Management Egress Interface Selection.......................................................................412

Handling of Management Route Conguration....................................................................................................413

Handling of Switch-Initiated Trac........................................................................................................................414

Handling of Switch-Destined Trac...................................................................................................................... 414

Handling of Transit Trac (Trac Separation).....................................................................................................415

Mapping of Management Applications and Trac Type..................................................................................... 415

Behavior of Various Applications for Switch-Initiated Trac .............................................................................416

Behavior of Various Applications for Switch-Destined Trac ............................................................................417

Interworking of EIS With Various Applications......................................................................................................418

Designating a Multicast Router Interface....................................................................................................................418

22 Interfaces................................................................................................................................................ 420

Basic Interface Conguration.......................................................................................................................................420

Advanced Interface Conguration...............................................................................................................................420

Interface Types................................................................................................................................................................421

Contents

13

View Basic Interface Information..................................................................................................................................421

Resetting an Interface to its Factory Default State...................................................................................................423

Enabling a Physical Interface........................................................................................................................................424

Physical Interfaces.........................................................................................................................................................424

Conguration Task List for Physical Interfaces.................................................................................................... 424

Overview of Layer Modes...................................................................................................................................... 425

Conguring Layer 2 (Data Link) Mode..................................................................................................................425

Conguring Layer 2 (Interface) Mode.................................................................................................................. 425

Conguring Layer 3 (Network) Mode...................................................................................................................426

Conguring Layer 3 (Interface) Mode.................................................................................................................. 426

Monitoring internal physical temperature of 10GBase-T optical ports.....................................................................427

Enabling temperature polling on ports.................................................................................................................. 429

Setting the reset port to normal mode................................................................................................................. 429

Automatic recovery of an Err-disabled interface....................................................................................................... 429

Conguring an automatic recovery for an Err-disabled interface......................................................................430

Egress Interface Selection (EIS)...................................................................................................................................431

Important Points to Remember.............................................................................................................................. 431

Conguring EIS......................................................................................................................................................... 431

Management Interfaces.................................................................................................................................................431

Conguring Management Interfaces..................................................................................................................... 431

Conguring a Management Interface on an Ethernet Port................................................................................433

VLAN Interfaces.............................................................................................................................................................434

Loopback Interfaces...................................................................................................................................................... 434

Null Interfaces................................................................................................................................................................ 435

Port Channel Interfaces................................................................................................................................................435

Port Channel Denition and Standards.................................................................................................................435

Port Channel Benets.............................................................................................................................................435

Port Channel Implementation.................................................................................................................................436

Interfaces in Port Channels.................................................................................................................................... 436

Conguration Tasks for Port Channel Interfaces................................................................................................. 437

Creating a Port Channel..........................................................................................................................................437

Adding a Physical Interface to a Port Channel.....................................................................................................437

Reassigning an Interface to a New Port Channel................................................................................................439

Conguring the Minimum Oper Up Links in a Port Channel.............................................................................. 440

Adding or Removing a Port Channel from a VLAN............................................................................................. 440

Assigning an IP Address to a Port Channel........................................................................................................... 441

Deleting or Disabling a Port Channel......................................................................................................................441

Load Balancing Through Port Channels................................................................................................................442

Changing the Hash Algorithm................................................................................................................................ 442

Bulk Conguration......................................................................................................................................................... 443

Interface Range........................................................................................................................................................443

Bulk Conguration Examples..................................................................................................................................443

Dening Interface Range Macros................................................................................................................................ 445

Dene the Interface Range.................................................................................................................................... 445

Choosing an Interface-Range Macro.................................................................................................................... 445

14

Contents

Monitoring and Maintaining Interfaces....................................................................................................................... 445

Maintenance Using TDR......................................................................................................................................... 446

Non Dell-Qualied Transceivers................................................................................................................................... 447

Splitting 40G Ports without Reload.............................................................................................................................447

Splitting QSFP Ports to SFP+ Ports........................................................................................................................... 449

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port..................................................................................449

Important Points to Remember............................................................................................................................. 450

Example Scenarios.................................................................................................................................................. 450

Conguring wavelength for 10–Gigabit SFP+ optics.................................................................................................451

Link Dampening..............................................................................................................................................................452

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

Conguration Example of Link Dampening...........................................................................................................453

Enabling Link Dampening........................................................................................................................................455

Link Bundle Monitoring................................................................................................................................................. 456

Using Ethernet Pause Frames for Flow Control........................................................................................................ 457

Enabling Pause Frames........................................................................................................................................... 457

Congure the MTU Size on an Interface....................................................................................................................458

Port-Pipes.......................................................................................................................................................................459

Auto-Negotiation on Ethernet Interfaces...................................................................................................................459

Setting the speed to 10/100/1000 Mbps on SFP-1G-T transceiver..................................................................459

Setting the Speed of Ethernet Interfaces............................................................................................................459

Set Auto-Negotiation Options................................................................................................................................ 461

View Advanced Interface Information..........................................................................................................................461

Conguring the Interface Sampling Size.............................................................................................................. 462

Conguring the Trac Sampling Size Globally...........................................................................................................463

Dynamic Counters......................................................................................................................................................... 465

Clearing Interface Counters................................................................................................................................... 465

Discard Counters........................................................................................................................................................... 466

Display discard counters......................................................................................................................................... 466

23 Internet Protocol Security (IPSec).......................................................................................................... 468

Conguring IPSec .........................................................................................................................................................468

24 IPv4 Routing............................................................................................................................................ 470

IP Addresses....................................................................................................................................................................471

Implementation Information.....................................................................................................................................471

Conguration Tasks for IP Addresses.......................................................................................................................... 471

Assigning IP Addresses to an Interface........................................................................................................................471

Conguring Static Routes.............................................................................................................................................472

Congure Static Routes for the Management Interface.......................................................................................... 473

IPv4 Path MTU Discovery Overview...........................................................................................................................474

Packet handling during MTU mismatch................................................................................................................ 474

Using the Congured Source IP Address in ICMP Messages.................................................................................. 474

Conguring the ICMP Source Interface................................................................................................................474

Conguring the Duration to Establish a TCP Connection........................................................................................ 475

Enabling Directed Broadcast........................................................................................................................................ 475

Contents

15

Resolution of Host Names............................................................................................................................................476

Enabling Dynamic Resolution of Host Names............................................................................................................ 476

Specifying the Local System Domain and a List of Domains....................................................................................476

Conguring DNS with Traceroute................................................................................................................................477

ARP..................................................................................................................................................................................478

Conguration Tasks for ARP........................................................................................................................................ 478

Conguring Static ARP Entries....................................................................................................................................478

Enabling Proxy ARP.......................................................................................................................................................479

Clearing ARP Cache...................................................................................................................................................... 479

ARP Learning via Gratuitous ARP................................................................................................................................479

Enabling ARP Learning via Gratuitous ARP................................................................................................................479

ARP Learning via ARP Request................................................................................................................................... 480

Conguring ARP Retries...............................................................................................................................................480

ICMP................................................................................................................................................................................ 481

Conguration Tasks for ICMP.......................................................................................................................................481

Enabling ICMP Unreachable Messages....................................................................................................................... 481

ICMP Redirects...............................................................................................................................................................481

UDP Helper.....................................................................................................................................................................483

Congure UDP Helper.............................................................................................................................................483

Important Points to Remember............................................................................................................................. 483

Enabling UDP Helper.....................................................................................................................................................483

Congurations Using UDP Helper............................................................................................................................... 483

UDP Helper with Broadcast-All Addresses.................................................................................................................484

UDP Helper with Subnet Broadcast Addresses.........................................................................................................484

UDP Helper with Congured Broadcast Addresses..................................................................................................485

UDP Helper with No Congured Broadcast Addresses............................................................................................485

Troubleshooting UDP Helper........................................................................................................................................486

25 IPv6 Routing............................................................................................................................................ 487

Protocol Overview......................................................................................................................................................... 487

Extended Address Space........................................................................................................................................488

Stateless Autoconguration................................................................................................................................... 488

IPv6 Headers............................................................................................................................................................488

IPv6 Header Fields...................................................................................................................................................489

Extension Header Fields.......................................................................................................................................... 491

Addressing................................................................................................................................................................ 492

Implementing IPv6 with Dell EMC Networking OS................................................................................................... 493

ICMPv6...........................................................................................................................................................................494

Path MTU discovery..................................................................................................................................................... 495

IPv6 Neighbor Discovery..............................................................................................................................................495

IPv6 Neighbor Discovery of MTU Packets...........................................................................................................496

Conguration Task List for IPv6 RDNSS.................................................................................................................... 496

Conguring the IPv6 Recursive DNS Server....................................................................................................... 496

Debugging IPv6 RDNSS Information Sent to the Host ..................................................................................... 497

Displaying IPv6 RDNSS Information......................................................................................................................498

Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 498

16

Contents

Conguration Tasks for IPv6........................................................................................................................................499

Adjusting Your CAM-Prole....................................................................................................................................499

Assigning an IPv6 Address to an Interface...........................................................................................................500

Assigning a Static IPv6 Route................................................................................................................................500

Conguring Telnet with IPv6.................................................................................................................................. 501

SNMP over IPv6...................................................................................................................................................... 501

Displaying IPv6 Information.....................................................................................................................................501

Displaying an IPv6 Interface Information.............................................................................................................. 502

Showing IPv6 Routes..............................................................................................................................................502

Showing the Running-Conguration for an Interface.........................................................................................504

Clearing IPv6 Routes...............................................................................................................................................504

Disabling ND Entry Timeout...................................................................................................................................504

Conguring IPv6 RA Guard..........................................................................................................................................505

Conguring IPv6 RA Guard on an Interface.........................................................................................................506

Monitoring IPv6 RA Guard......................................................................................................................................507

26 iSCSI Optimization.................................................................................................................................. 508

iSCSI Optimization Overview.......................................................................................................................................508

Monitoring iSCSI Trac Flows................................................................................................................................510

Application of Quality of Service to iSCSI Trac Flows...................................................................................... 510

Information Monitored in iSCSI Trac Flows........................................................................................................510

Detection and Auto-Conguration for Dell EqualLogic Arrays.............................................................................511

Conguring Detection and Ports for Dell Compellent Arrays.............................................................................. 511

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer..................................................................512

Enable and Disable iSCSI Optimization..................................................................................................................512

Default iSCSI Optimization Values................................................................................................................................513

iSCSI Optimization Prerequisites.................................................................................................................................. 513

Conguring iSCSI Optimization.................................................................................................................................... 513

Displaying iSCSI Optimization Information.................................................................................................................. 515

27 Intermediate System to Intermediate System........................................................................................... 517

IS-IS Protocol Overview.................................................................................................................................................517

IS-IS Addressing..............................................................................................................................................................517

Multi-Topology IS-IS....................................................................................................................................................... 518

Transition Mode........................................................................................................................................................ 518

Interface Support..................................................................................................................................................... 519

Adjacencies............................................................................................................................................................... 519

Graceful Restart............................................................................................................................................................. 519

Timers........................................................................................................................................................................ 519

Implementation Information.......................................................................................................................................... 519

Conguration Information.............................................................................................................................................520

Conguration Tasks for IS-IS.................................................................................................................................. 521

Conguring the Distance of a Route.....................................................................................................................528

Changing the IS-Type.............................................................................................................................................. 529

Redistributing IPv4 Routes......................................................................................................................................531

Redistributing IPv6 Routes.....................................................................................................................................532

Contents

17

Conguring Authentication Passwords.................................................................................................................533

Setting the Overload Bit......................................................................................................................................... 533

Debugging IS-IS....................................................................................................................................................... 534

IS-IS Metric Styles.........................................................................................................................................................535

Congure Metric Values............................................................................................................................................... 535

Maximum Values in the Routing Table.................................................................................................................. 535

Change the IS-IS Metric Style in One Level Only................................................................................................535

Leaks from One Level to Another.......................................................................................................................... 537

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

28 Link Aggregation Control Protocol (LACP).............................................................................................. 540

Introduction to Dynamic LAGs and LACP.................................................................................................................. 540

Important Points to Remember............................................................................................................................. 540

LACP Modes.............................................................................................................................................................541

Conguring LACP Commands................................................................................................................................541

LACP Conguration Tasks............................................................................................................................................542

Creating a LAG.........................................................................................................................................................542

Conguring the LAG Interfaces as Dynamic........................................................................................................542

Setting the LACP Long Timeout............................................................................................................................543

Monitoring and Debugging LACP..........................................................................................................................543

Shared LAG State Tracking.......................................................................................................................................... 544

Conguring Shared LAG State Tracking...............................................................................................................544

Important Points about Shared LAG State Tracking...........................................................................................546

LACP Basic Conguration Example............................................................................................................................ 546

Congure a LAG on ALPHA................................................................................................................................... 546

29 Layer 2.................................................................................................................................................... 555

Manage the MAC Address Table.................................................................................................................................555

Clearing the MAC Address Table...........................................................................................................................555

Setting the Aging Time for Dynamic Entries........................................................................................................555

Conguring a Static MAC Address........................................................................................................................556

Displaying the MAC Address Table........................................................................................................................556

MAC Learning Limit.......................................................................................................................................................556

Setting the MAC Learning Limit.............................................................................................................................557

mac learning-limit Dynamic.....................................................................................................................................557

mac learning-limit mac-address-sticky................................................................................................................. 557

mac learning-limit station-move............................................................................................................................ 558

mac learning-limit no-station-move...................................................................................................................... 558

Learning Limit Violation Actions.............................................................................................................................558

Setting Station Move Violation Actions................................................................................................................ 559

Recovering from Learning Limit and Station Move Violations...........................................................................559

Disabling MAC Address Learning on the System................................................................................................ 560

Enabling port security............................................................................................................................................. 560

NIC Teaming...................................................................................................................................................................560

Congure Redundant Pairs........................................................................................................................................... 561

Important Points about Conguring Redundant Pairs........................................................................................ 563

18

Contents

Far-End Failure Detection.............................................................................................................................................564

FEFD State Changes...............................................................................................................................................565

Conguring FEFD.................................................................................................................................................... 566

Enabling FEFD on an Interface.............................................................................................................................. 566

Debugging FEFD......................................................................................................................................................567

30 Link Layer Discovery Protocol (LLDP)..................................................................................................... 569

802.1AB (LLDP) Overview........................................................................................................................................... 569

Protocol Data Units................................................................................................................................................. 569

Optional TLVs................................................................................................................................................................. 570

Management TLVs...................................................................................................................................................570

TIA-1057 (LLDP-MED) Overview.................................................................................................................................572

TIA Organizationally Specic TLVs........................................................................................................................ 572

Congure LLDP..............................................................................................................................................................576

Related Conguration Tasks................................................................................................................................... 576

Important Points to Remember..............................................................................................................................576

LLDP Compatibility.................................................................................................................................................. 577

CONFIGURATION versus INTERFACE Congurations.............................................................................................577

Enabling LLDP................................................................................................................................................................ 577

Disabling and Undoing LLDP.................................................................................................................................. 578

Enabling LLDP on Management Ports........................................................................................................................ 578

Disabling and Undoing LLDP on Management Ports.......................................................................................... 578

Advertising TLVs............................................................................................................................................................ 578

Storing and Viewing Unrecognized LLDP TLVs.........................................................................................................580

Reserved Unrecognized LLDP TLVs..................................................................................................................... 580

Organizational Specic Unrecognized LLDP TLVs..............................................................................................580

Viewing Unrecognized LLDP TLVs........................................................................................................................580

Viewing the LLDP Conguration.................................................................................................................................. 581

Viewing Information Advertised by Adjacent LLDP Neighbors.................................................................................581

Examples of Viewing Information Advertised by Neighbors............................................................................... 581

Conguring LLDPDU Intervals.....................................................................................................................................583

Conguring LLDP Notication Interval....................................................................................................................... 584

Conguring Transmit and Receive Mode....................................................................................................................584

Conguring the Time to Live Value............................................................................................................................. 585

Debugging LLDP............................................................................................................................................................586

Relevant Management Objects....................................................................................................................................587

31 Microsoft Network Load Balancing...........................................................................................................592

NLB Unicast Mode Scenario........................................................................................................................................592

NLB Multicast Mode Scenario.....................................................................................................................................592

Limitations of the NLB Feature....................................................................................................................................593

Microsoft Clustering......................................................................................................................................................593

Enable and Disable VLAN Flooding ............................................................................................................................ 593

Conguring a Switch for NLB .....................................................................................................................................593

Enabling a Switch for Multicast NLB.................................................................................................................... 594

Contents

19

32 Multicast Source Discovery Protocol (MSDP).........................................................................................595

Protocol Overview.........................................................................................................................................................595

Anycast RP.....................................................................................................................................................................596

Implementation Information..........................................................................................................................................597

Congure Multicast Source Discovery Protocol........................................................................................................ 597

Related Conguration Tasks................................................................................................................................... 597

Enable MSDP..................................................................................................................................................................601

Manage the Source-Active Cache.............................................................................................................................. 602

Viewing the Source-Active Cache.........................................................................................................................602

Limiting the Source-Active Cache.........................................................................................................................602

Clearing the Source-Active Cache........................................................................................................................ 603

Enabling the Rejected Source-Active Cache....................................................................................................... 603

Accept Source-Active Messages that Fail the RFP Check......................................................................................603

Specifying Source-Active Messages...........................................................................................................................606

Limiting the Source-Active Messages from a Peer...................................................................................................607

Preventing MSDP from Caching a Local Source.......................................................................................................607

Preventing MSDP from Caching a Remote Source.................................................................................................. 608

Preventing MSDP from Advertising a Local Source................................................................................................. 608

Logging Changes in Peership States...........................................................................................................................609

Terminating a Peership..................................................................................................................................................609

Clearing Peer Statistics................................................................................................................................................. 610

Debugging MSDP...........................................................................................................................................................610

MSDP with Anycast RP................................................................................................................................................. 611

Conguring Anycast RP................................................................................................................................................ 612

Reducing Source-Active Message Flooding......................................................................................................... 613

Specifying the RP Address Used in SA Messages...............................................................................................613

MSDP Sample Congurations...................................................................................................................................... 615

36 Multicast Listener Discovery Protocol...................................................................................................... 618

MLD Version 1................................................................................................................................................................. 618

MLD Querier Router.......................................................................................................................................................618

Joining a Multicast Group..............................................................................................................................................619

Leaving a Multicast Group.............................................................................................................................................619

MLD version 2.................................................................................................................................................................619

MLD timers......................................................................................................................................................................621

Reducing Host Response Burstiness.................................................................................................................... 622

Conguring MLD Version..............................................................................................................................................622

Clearing MLD groups.....................................................................................................................................................622

Debugging MLD.............................................................................................................................................................622

Explicit Tracking............................................................................................................................................................. 622

Reducing Leave Latency...............................................................................................................................................623

Displaying MLD groups table........................................................................................................................................623

Displaying MLD Interfaces............................................................................................................................................ 623

34 Multiple Spanning Tree Protocol (MSTP).................................................................................................624

20

Contents

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Dell PowerSwitch S4048-ON Owner's manual

Dell PowerSwitch S4048-ON Owner's manual

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