Dell PowerSwitch S4048-ON Owner's manual

Dell Configuration Guide for the S4048 ON

System

9.13.0.0

Notes, cautions, and warnings

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

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

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

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2017 - 12

Rev. A00

Contents

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Compressing Conguration Files............................................................................................................................. 56

Managing the File System.............................................................................................................................................. 58

Enabling Software Features on Devices Using a Command Option..........................................................................59

View Command History.................................................................................................................................................. 60

Contents

3

Upgrading Dell EMC Networking OS............................................................................................................................ 60

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

Using HTTP for File Transfers.........................................................................................................................................61

4 Management................................................................................................................................................63

Conguring Privilege Levels............................................................................................................................................63

Creating a Custom Privilege Level...........................................................................................................................64

Removing a Command from EXEC Mode.............................................................................................................. 64

Moving a Command from EXEC Privilege Mode to EXEC Mode........................................................................64

Allowing Access to CONFIGURATION Mode Commands....................................................................................64

Allowing Access to Dierent Modes........................................................................................................................64

Applying a Privilege Level to a Username............................................................................................................... 66

Applying a Privilege Level to a Terminal Line.......................................................................................................... 66

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

Audit and Security Logs............................................................................................................................................ 67

Conguring Logging Format ...................................................................................................................................69

Display the Logging Buer and the Logging Conguration..................................................................................69

Setting Up a Secure Connection to a Syslog Server.............................................................................................70

Sending System Messages to a Syslog Server.......................................................................................................71

Track Login Activity.......................................................................................................................................................... 71

Restrictions for Tracking Login Activity................................................................................................................... 71

Conguring Login Activity Tracking..........................................................................................................................71

Display Login Statistics..............................................................................................................................................72

Limit Concurrent Login Sessions....................................................................................................................................73

Restrictions for Limiting the Number of Concurrent Sessions.............................................................................73

Conguring Concurrent Session Limit.....................................................................................................................74

Enabling the System to Clear Existing Sessions.....................................................................................................74

Enabling Secured CLI Mode........................................................................................................................................... 75

Log Messages in the Internal Buer..............................................................................................................................75

Conguration Task List for System Log Management.......................................................................................... 75

Disabling System Logging............................................................................................................................................... 75

Sending System Messages to a Syslog Server............................................................................................................ 76

Conguring a UNIX System as a Syslog Server.....................................................................................................76

Changing System Logging Settings...............................................................................................................................76

Display the Logging Buer and the Logging Conguration........................................................................................ 77

Conguring a UNIX Logging Facility Level.................................................................................................................... 78

Synchronizing Log Messages......................................................................................................................................... 79

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

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

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

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

Conguring FTP Server Parameters....................................................................................................................... 80

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

Terminal Lines....................................................................................................................................................................81

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

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

4

Contents

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

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

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

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

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

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

Important Points to Remember................................................................................................................................86

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

Viewing the Reason for Last System Reboot...............................................................................................................88

5 802.1X......................................................................................................................................................... 89

Port-Authentication Process...........................................................................................................................................91

EAP over RADIUS.......................................................................................................................................................91

Conguring 802.1X...........................................................................................................................................................92

Related Conguration Tasks..................................................................................................................................... 92

Important Points to Remember......................................................................................................................................92

Enabling 802.1X................................................................................................................................................................ 93

Conguring dot1x Prole ................................................................................................................................................94

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

Conguring the Static MAB and MAB Prole .............................................................................................................95

Conguring Critical VLAN ..............................................................................................................................................96

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

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

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

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

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

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

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

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

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

6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM).................................. 104

Optimizing CAM Utilization During the Attachment of ACLs to VLANs................................................................. 104

Guidelines for Conguring ACL VLAN Groups........................................................................................................... 105

Conguring ACL VLAN Groups and Conguring FP Blocks for VLAN Parameters...............................................105

Conguring ACL VLAN Groups.............................................................................................................................. 105

Conguring FP Blocks for VLAN Parameters.......................................................................................................106

Viewing CAM Usage.......................................................................................................................................................107

Allocating FP Blocks for VLAN Processes.................................................................................................................. 108

Unied Forwarding Table (UFT) Modes...................................................................................................................... 109

Conguring UFT Modes.......................................................................................................................................... 109

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

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

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

Implementing ACLs on Dell EMC Networking OS.................................................................................................112

Contents

5

Important Points to Remember.....................................................................................................................................114

Conguration Task List for Route Maps.................................................................................................................114

Conguring Match Routes.......................................................................................................................................116

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

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

Congure a Route Map for Route Tagging............................................................................................................ 119

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

IP Fragment Handling.................................................................................................................................................... 120

IP Fragments ACL Examples...................................................................................................................................120

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

Congure a Standard IP ACL.........................................................................................................................................121

Conguring a Standard IP ACL Filter..................................................................................................................... 122

Congure an Extended IP ACL..................................................................................................................................... 123

Conguring Filters with a Sequence Number....................................................................................................... 123

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

Congure Layer 2 and Layer 3 ACLs............................................................................................................................125

Assign an IP ACL to an Interface..................................................................................................................................126

Applying an IP ACL.........................................................................................................................................................126

Counting ACL Hits....................................................................................................................................................127

Congure Ingress ACLs..................................................................................................................................................127

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

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

IP Prex Lists.................................................................................................................................................................. 129

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

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

ACL Resequencing......................................................................................................................................................... 133

Resequencing an ACL or Prex List.......................................................................................................................133

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

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

Logging of ACL Processes............................................................................................................................................ 135

Guidelines for Conguring ACL Logging................................................................................................................136

Conguring ACL Logging.........................................................................................................................................136

Flow-Based Monitoring..................................................................................................................................................137

Behavior of Flow-Based Monitoring.......................................................................................................................137

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

Conguring UDF ACL.................................................................................................................................................... 140

Conguring IP Mirror Access Group............................................................................................................................ 142

Sample Conguration...............................................................................................................................................143

Example of viewing IP mirror–access–group applied to an Interface................................................................143

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

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

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

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

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

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

6

Contents

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

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

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

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

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

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

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

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

Congure BFD for VRRP.........................................................................................................................................169

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

9 Border Gateway Protocol IPv4 (BGPv4).....................................................................................................173

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

Sessions and Peers.........................................................................................................................................................175

Establish a Session................................................................................................................................................... 175

Route Reectors.............................................................................................................................................................176

BGP Attributes................................................................................................................................................................177

Best Path Selection Criteria.................................................................................................................................... 177

Weight........................................................................................................................................................................179

Local Preference....................................................................................................................................................... 179

Multi-Exit Discriminators (MEDs)...........................................................................................................................180

Origin...........................................................................................................................................................................181

AS Path......................................................................................................................................................................182

Next Hop................................................................................................................................................................... 182

Multiprotocol BGP..........................................................................................................................................................182

Implement BGP with Dell EMC Networking OS.........................................................................................................183

Additional Path (Add-Path) Support......................................................................................................................183

Advertise IGP Cost as MED for Redistributed Routes........................................................................................ 183

Ignore Router-ID in Best-Path Calculation............................................................................................................ 184

Four-Byte AS Numbers............................................................................................................................................184

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

AS Number Migration.............................................................................................................................................. 186

BGP4 Management Information Base (MIB)........................................................................................................187

Important Points to Remember...............................................................................................................................187

Conguration Information..............................................................................................................................................188

BGP Conguration......................................................................................................................................................... 188

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

Conguring AS4 Number Representations........................................................................................................... 192

Conguring Peer Groups.........................................................................................................................................194

Conguring BGP Fast Fall-Over.............................................................................................................................196

Conguring Passive Peering................................................................................................................................... 198

Maintaining Existing AS Numbers During an AS Migration.................................................................................198

Allowing an AS Number to Appear in its Own AS Path.......................................................................................199

Enabling Graceful Restart.......................................................................................................................................200

Enabling Neighbor Graceful Restart...................................................................................................................... 201

Filtering on an AS-Path Attribute........................................................................................................................... 201

Contents

7

Regular Expressions as Filters................................................................................................................................203

Redistributing Routes..............................................................................................................................................204

Enabling Additional Paths....................................................................................................................................... 205

Conguring IP Community Lists............................................................................................................................ 205

Conguring an IP Extended Community List....................................................................................................... 206

Filtering Routes with Community Lists................................................................................................................. 207

Manipulating the COMMUNITY Attribute............................................................................................................208

Changing MED Attributes.......................................................................................................................................209

Changing the LOCAL_PREFERENCE Attribute..................................................................................................209

Conguring the local System or a Dierent System to be the Next Hop for BGP-Learned Routes............. 210

Changing the WEIGHT Attribute.............................................................................................................................211

Enabling Multipath.................................................................................................................................................... 211

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

Filtering BGP Routes Using Route Maps...............................................................................................................213

Filtering BGP Routes Using AS-PATH Information.............................................................................................. 213

Conguring BGP Route Reectors........................................................................................................................ 214

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

Conguring BGP Confederations...........................................................................................................................215

Enabling Route Flap Dampening.............................................................................................................................216

Changing BGP Timers..............................................................................................................................................218

Enabling BGP Neighbor Soft-Reconguration..................................................................................................... 218

Enabling or disabling BGP neighbors..................................................................................................................... 219

Route Map Continue................................................................................................................................................221

Enabling MBGP Congurations.................................................................................................................................... 221

Congure IPv6 NH Automatically for IPv6 Prex Advertised over IPv4 Neighbor......................................... 222

BGP Regular Expression Optimization........................................................................................................................222

Debugging BGP..............................................................................................................................................................222

Storing Last and Bad PDUs....................................................................................................................................223

Capturing PDUs....................................................................................................................................................... 224

PDU Counters.......................................................................................................................................................... 225

Sample Congurations.................................................................................................................................................. 225

10 Content Addressable Memory (CAM).......................................................................................................232

CAM Allocation...............................................................................................................................................................232

Test CAM Usage............................................................................................................................................................ 234

View CAM-ACL Settings.............................................................................................................................................. 234

View CAM Usage...........................................................................................................................................................236

Conguring CAM Threshold and Silence Period........................................................................................................236

Setting CAM Threshold and Silence Period..........................................................................................................237

CAM Optimization......................................................................................................................................................... 238

Troubleshoot CAM Proling..........................................................................................................................................238

QoS CAM Region Limitation...................................................................................................................................238

11 Control Plane Policing (CoPP).................................................................................................................. 239

Congure Control Plane Policing................................................................................................................................. 240

Conguring CoPP for Protocols............................................................................................................................. 241

8

Contents

Conguring CoPP for CPU Queues...................................................................................................................... 243

CoPP for OSPFv3 Packets.....................................................................................................................................244

Conguring CoPP for OSPFv3...............................................................................................................................247

Displaying CoPP Conguration ............................................................................................................................. 247

12 Data Center Bridging (DCB).....................................................................................................................250

Ethernet Enhancements in Data Center Bridging..................................................................................................... 250

Priority-Based Flow Control.................................................................................................................................... 251

Enhanced Transmission Selection..........................................................................................................................252

Data Center Bridging Exchange Protocol (DCBx)...............................................................................................253

Data Center Bridging in a Trac Flow.................................................................................................................. 254

Enabling Data Center Bridging.....................................................................................................................................254

DCB Maps and its Attributes................................................................................................................................. 255

Data Center Bridging: Default Conguration..............................................................................................................256

Conguring Priority-Based Flow Control....................................................................................................................256

Conguring Lossless Queues..................................................................................................................................257

Conguring PFC in a DCB Map................................................................................................................................... 258

PFC Conguration Notes....................................................................................................................................... 258

PFC Prerequisites and Restrictions.......................................................................................................................259

Applying a DCB Map on a Port....................................................................................................................................259

Conguring PFC without a DCB Map.........................................................................................................................260

Conguring Lossless QueuesExample:..................................................................................................................260

Priority-Based Flow Control Using Dynamic Buer Method....................................................................................262

Pause and Resume of Trac..................................................................................................................................262

Buer Sizes for Lossless or PFC Packets............................................................................................................ 262

Behavior of Tagged Packets.........................................................................................................................................263

Conguration Example for DSCP and PFC Priorities................................................................................................263

Using PFC to Manage Converged Ethernet Trac...................................................................................................264

Congure Enhanced Transmission Selection..............................................................................................................264

ETS Prerequisites and Restrictions....................................................................................................................... 264

Creating an ETS Priority Group..............................................................................................................................264

ETS Operation with DCBx......................................................................................................................................265

Conguring Bandwidth Allocation for DCBx CIN................................................................................................ 266

Conguring ETS in a DCB Map..............................................................................................................................267

Hierarchical Scheduling in ETS Output Policies.........................................................................................................268

Using ETS to Manage Converged Ethernet Trac...................................................................................................268

Applying DCB Policies in a Switch Stack.................................................................................................................... 269

Congure a DCBx Operation........................................................................................................................................269

DCBx Operation.......................................................................................................................................................269

DCBx Port Roles......................................................................................................................................................269

DCB Conguration Exchange................................................................................................................................. 271

Conguration Source Election.................................................................................................................................271

Propagation of DCB Information............................................................................................................................272

Auto-Detection and Manual Conguration of the DCBx Version.......................................................................272

DCBx Example..........................................................................................................................................................272

DCBx Prerequisites and Restrictions.....................................................................................................................273

Contents

9

Conguring DCBx.................................................................................................................................................... 273

Verifying the DCB Conguration..................................................................................................................................277

QoS dot1p Trac Classication and Queue Assignment..........................................................................................286

Conguring the Dynamic Buer Method....................................................................................................................287

Sample DCB Conguration...........................................................................................................................................288

PFC and ETS Conguration Command Examples.............................................................................................. 290

13 Dynamic Host Conguration Protocol (DHCP)..........................................................................................291

DHCP Packet Format and Options.............................................................................................................................. 291

Assign an IP Address using DHCP...............................................................................................................................293

Implementation Information..........................................................................................................................................294

Congure the System to be a DHCP Server..............................................................................................................294

Conguring the Server for Automatic Address Allocation..................................................................................295

Specifying a Default Gateway................................................................................................................................ 296

Congure a Method of Hostname Resolution..................................................................................................... 296

Using DNS for Address Resolution........................................................................................................................296

Using NetBIOS WINS for Address Resolution......................................................................................................297

Creating Manual Binding Entries............................................................................................................................297

Debugging the DHCP Server................................................................................................................................. 297

Using DHCP Clear Commands.............................................................................................................................. 298

Congure the System to be a Relay Agent................................................................................................................ 298

Congure the System to be a DHCP Client...............................................................................................................300

Conguring the DHCP Client System...................................................................................................................300

DHCP Client on a Management Interface............................................................................................................302

DHCP Client Operation with Other Features.......................................................................................................302

Congure the System for User Port Stacking (Option 230)....................................................................................303

Congure Secure DHCP...............................................................................................................................................303

Option 82..................................................................................................................................................................304

DHCP Snooping.......................................................................................................................................................304

Drop DHCP Packets on Snooped VLANs Only....................................................................................................308

Dynamic ARP Inspection........................................................................................................................................ 309

Conguring Dynamic ARP Inspection....................................................................................................................310

Source Address Validation..............................................................................................................................................311

Enabling IP Source Address Validation....................................................................................................................311

DHCP MAC Source Address Validation................................................................................................................. 312

Enabling IP+MAC Source Address Validation........................................................................................................312

Viewing the Number of SAV Dropped Packets.................................................................................................... 313

Clearing the Number of SAV Dropped Packets....................................................................................................313

14 Equal Cost Multi-Path (ECMP).................................................................................................................314

ECMP for Flow-Based Anity......................................................................................................................................314

Conguring the Hash Algorithm............................................................................................................................. 314

Enabling Deterministic ECMP Next Hop............................................................................................................... 314

Conguring the Hash Algorithm Seed................................................................................................................... 315

Link Bundle Monitoring.................................................................................................................................................. 315

Managing ECMP Group Paths................................................................................................................................316

10

Contents

Creating an ECMP Group Bundle...........................................................................................................................316

Modifying the ECMP Group Threshold................................................................................................................. 316

RTAG7..............................................................................................................................................................................317

Flow-based Hashing for ECMP.................................................................................................................................... 318

15 FIP Snooping............................................................................................................................................ 321

Fibre Channel over Ethernet.........................................................................................................................................321

Ensure Robustness in a Converged Ethernet Network.............................................................................................321

FIP Snooping on Ethernet Bridges.............................................................................................................................. 323

FIP Snooping in a Switch Stack...................................................................................................................................325

Using FIP Snooping....................................................................................................................................................... 325

FIP Snooping Prerequisites.....................................................................................................................................325

Important Points to Remember............................................................................................................................. 325

Enabling the FCoE Transit Feature........................................................................................................................326

Enable FIP Snooping on VLANs............................................................................................................................. 327

Congure the FC-MAP Value.................................................................................................................................327

Congure a Port for a Bridge-to-Bridge Link....................................................................................................... 327

Congure a Port for a Bridge-to-FCF Link........................................................................................................... 327

Impact on Other Software Features......................................................................................................................327

FIP Snooping Restrictions...................................................................................................................................... 328

Conguring FIP Snooping.......................................................................................................................................328

Displaying FIP Snooping Information...........................................................................................................................329

FCoE Transit Conguration Example...........................................................................................................................334

16 Flex Hash and Optimized Boot-Up............................................................................................................336

Flex Hash Capability Overview.....................................................................................................................................336

Conguring the Flex Hash Mechanism.......................................................................................................................336

Conguring Fast Boot and LACP Fast Switchover................................................................................................... 337

Optimizing the Boot Time.............................................................................................................................................337

Booting Process When Optimized Boot Time Mechanism is Enabled.............................................................. 337

Guidelines for Conguring Optimized Booting Mechanism................................................................................338

Interoperation of Applications with Fast Boot and System States..........................................................................339

LACP and IPv4 Routing.......................................................................................................................................... 339

LACP and IPv6 Routing.......................................................................................................................................... 339

BGP Graceful Restart............................................................................................................................................. 340

Cold Boot Caused by Power Cycling the System................................................................................................340

Unexpected Reload of the System........................................................................................................................340

Software Upgrade................................................................................................................................................... 340

LACP Fast Switchover............................................................................................................................................340

Changes to BGP Multipath..................................................................................................................................... 341

Delayed Installation of ECMP Routes Into BGP....................................................................................................341

RDMA Over Converged Ethernet (RoCE) Overview................................................................................................ 341

Preserving 802.1Q VLAN Tag Value for Lite Subinterfaces...................................................................................... 342

17 FIPS Cryptography...................................................................................................................................343

Conguration Tasks....................................................................................................................................................... 343

Contents

11

Preparing the System....................................................................................................................................................343

Enabling FIPS Mode...................................................................................................................................................... 344

Generating Host-Keys...................................................................................................................................................344

Monitoring FIPS Mode Status......................................................................................................................................344

Disabling FIPS Mode..................................................................................................................................................... 345

18 Force10 Resilient Ring Protocol (FRRP)................................................................................................... 346

Protocol Overview.........................................................................................................................................................346

Ring Status............................................................................................................................................................... 347

Multiple FRRP Rings................................................................................................................................................347

Important FRRP Points...........................................................................................................................................348

Important FRRP Concepts..................................................................................................................................... 349

Implementing FRRP...................................................................................................................................................... 350

FRRP Conguration...................................................................................................................................................... 350

Creating the FRRP Group...................................................................................................................................... 350

Conguring the Control VLAN................................................................................................................................351

Conguring and Adding the Member VLANs.......................................................................................................352

Setting the FRRP Timers........................................................................................................................................353

Clearing the FRRP Counters..................................................................................................................................353

Viewing the FRRP Conguration...........................................................................................................................353

Viewing the FRRP Information.............................................................................................................................. 353

Troubleshooting FRRP.................................................................................................................................................. 354

Conguration Checks..............................................................................................................................................354

Sample Conguration and Topology............................................................................................................................354

FRRP Support on VLT.................................................................................................................................................. 355

Example Scenario.................................................................................................................................................... 356

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

19 GARP VLAN Registration Protocol (GVRP)..............................................................................................358

Important Points to Remember................................................................................................................................... 358

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

Related Conguration Tasks...................................................................................................................................359

Enabling GVRP Globally................................................................................................................................................360

Enabling GVRP on a Layer 2 Interface........................................................................................................................360

Congure GVRP Registration...................................................................................................................................... 360

Congure a GARP Timer............................................................................................................................................... 361

RPM Redundancy.......................................................................................................................................................... 361

20 High Availability (HA)...............................................................................................................................363

Component Redundancy.............................................................................................................................................. 363

Automatic and Manual Stack Unit Failover.......................................................................................................... 363

Synchronization between Management and Standby Units..............................................................................364

Forcing a Stack Unit Failover................................................................................................................................. 364

Specifying an Auto-Failover Limit..........................................................................................................................365

Disabling Auto-Reboot............................................................................................................................................ 365

Manually Synchronizing Management and Standby Units.................................................................................365

12

Contents

Pre-Conguring a Stack Unit Slot............................................................................................................................... 365

Removing a Provisioned Logical Stack Unit............................................................................................................... 365

Hitless Behavior............................................................................................................................................................. 366

Graceful Restart............................................................................................................................................................ 366

Software Resiliency....................................................................................................................................................... 366

Software Component Health Monitoring............................................................................................................. 366

System Health Monitoring...................................................................................................................................... 367

Failure and Event Logging.......................................................................................................................................367

Hot-Lock Behavior.........................................................................................................................................................368

21 Internet Group Management Protocol (IGMP)......................................................................................... 369

IGMP Implementation Information.............................................................................................................................. 369

IGMP Protocol Overview..............................................................................................................................................369

IGMP Version 2........................................................................................................................................................369

IGMP Version 3......................................................................................................................................................... 371

Congure IGMP..............................................................................................................................................................374

Related Conguration Tasks................................................................................................................................... 374

Viewing IGMP Enabled Interfaces............................................................................................................................... 375

Selecting an IGMP Version........................................................................................................................................... 375

Viewing IGMP Groups................................................................................................................................................... 375

Adjusting Timers.............................................................................................................................................................376

Adjusting Query and Response Timers................................................................................................................. 376

Preventing a Host from Joining a Group.....................................................................................................................377

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

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

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

Conguring IGMP Snooping...................................................................................................................................380

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

Disabling Multicast Flooding....................................................................................................................................381

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

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

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

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

Protocol Separation.................................................................................................................................................383

Enabling and Disabling Management Egress Interface Selection...................................................................... 384

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

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

Handling of Switch-Destined Trac......................................................................................................................386

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

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

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

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

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

Designating a Multicast Router Interface...................................................................................................................390

22 Interfaces................................................................................................................................................ 392

Contents

13

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

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

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

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

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

Enabling a Physical Interface........................................................................................................................................396

Physical Interfaces.........................................................................................................................................................396

Conguration Task List for Physical Interfaces....................................................................................................396

Overview of Layer Modes...................................................................................................................................... 396

Conguring Layer 2 (Data Link) Mode..................................................................................................................397

Conguring Layer 2 (Interface) Mode...................................................................................................................397

Conguring Layer 3 (Network) Mode...................................................................................................................398

Conguring Layer 3 (Interface) Mode.................................................................................................................. 398

Egress Interface Selection (EIS)..................................................................................................................................399

Important Points to Remember............................................................................................................................. 399

Conguring EIS........................................................................................................................................................ 399

Management Interfaces................................................................................................................................................400

Conguring Management Interfaces.................................................................................................................... 400

Conguring a Management Interface on an Ethernet Port................................................................................ 401

VLAN Interfaces............................................................................................................................................................ 402

Loopback Interfaces......................................................................................................................................................403

Null Interfaces................................................................................................................................................................ 403

Port Channel Interfaces................................................................................................................................................403

Port Channel Denition and Standards.................................................................................................................404

Port Channel Benets.............................................................................................................................................404

Port Channel Implementation.................................................................................................................................404

Interfaces in Port Channels....................................................................................................................................405

Conguration Tasks for Port Channel Interfaces.................................................................................................405

Creating a Port Channel......................................................................................................................................... 405

Adding a Physical Interface to a Port Channel.....................................................................................................406

Reassigning an Interface to a New Port Channel................................................................................................ 407

Conguring the Minimum Oper Up Links in a Port Channel.............................................................................. 408

Adding or Removing a Port Channel from a VLAN............................................................................................. 408

Assigning an IP Address to a Port Channel.......................................................................................................... 409

Deleting or Disabling a Port Channel......................................................................................................................410

Load Balancing Through Port Channels................................................................................................................ 410

Changing the Hash Algorithm.................................................................................................................................410

Bulk Conguration...........................................................................................................................................................411

Interface Range......................................................................................................................................................... 411

Bulk Conguration Examples................................................................................................................................... 411

Dening Interface Range Macros................................................................................................................................. 413

Dene the Interface Range..................................................................................................................................... 413

Choosing an Interface-Range Macro.....................................................................................................................413

Monitoring and Maintaining Interfaces........................................................................................................................ 414

Maintenance Using TDR..........................................................................................................................................415

14

Contents

Non Dell-Qualied Transceivers....................................................................................................................................415

Splitting 40G Ports without Reload............................................................................................................................. 416

Splitting QSFP Ports to SFP+ Ports............................................................................................................................ 417

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port...................................................................................418

Important Points to Remember.............................................................................................................................. 418

Example Scenarios................................................................................................................................................... 418

Conguring wavelength for 10–Gigabit SFP+ optics................................................................................................420

Link Dampening..............................................................................................................................................................420

Important Points to Remember.............................................................................................................................. 421

Conguration Example of Link Dampening........................................................................................................... 421

Enabling Link Dampening........................................................................................................................................423

Link Bundle Monitoring..................................................................................................................................................424

Using Ethernet Pause Frames for Flow Control........................................................................................................ 425

Enabling Pause Frames........................................................................................................................................... 425

Congure the MTU Size on an Interface....................................................................................................................426

Port-Pipes.......................................................................................................................................................................427

Auto-Negotiation on Ethernet Interfaces................................................................................................................... 427

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

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

View Advanced Interface Information.........................................................................................................................429

Conguring the Interface Sampling Size.............................................................................................................. 430

Conguring the Trac Sampling Size Globally........................................................................................................... 431

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

Clearing Interface Counters....................................................................................................................................433

23 Internet Protocol Security (IPSec).......................................................................................................... 435

Conguring IPSec .........................................................................................................................................................435

24 IPv4 Routing............................................................................................................................................ 437

IP Addresses...................................................................................................................................................................438

Implementation Information....................................................................................................................................438

Conguration Tasks for IP Addresses..........................................................................................................................438

Assigning IP Addresses to an Interface.......................................................................................................................438

Conguring Static Routes.............................................................................................................................................439

Congure Static Routes for the Management Interface..........................................................................................440

IPv4 Path MTU Discovery Overview........................................................................................................................... 441

Using the Congured Source IP Address in ICMP Messages...................................................................................441

Conguring the ICMP Source Interface................................................................................................................ 441

Conguring the Duration to Establish a TCP Connection........................................................................................ 442

Enabling Directed Broadcast........................................................................................................................................ 442

Resolution of Host Names............................................................................................................................................442

Enabling Dynamic Resolution of Host Names............................................................................................................443

Specifying the Local System Domain and a List of Domains................................................................................... 443

Conguring DNS with Traceroute................................................................................................................................444

ARP..................................................................................................................................................................................444

Conguration Tasks for ARP........................................................................................................................................ 445

Contents

15

Conguring Static ARP Entries....................................................................................................................................445

Enabling Proxy ARP.......................................................................................................................................................445

Clearing ARP Cache......................................................................................................................................................446

ARP Learning via Gratuitous ARP................................................................................................................................446

Enabling ARP Learning via Gratuitous ARP................................................................................................................446

ARP Learning via ARP Request................................................................................................................................... 446

Conguring ARP Retries............................................................................................................................................... 447

ICMP............................................................................................................................................................................... 448

Conguration Tasks for ICMP...................................................................................................................................... 448

Enabling ICMP Unreachable Messages...................................................................................................................... 448

UDP Helper.....................................................................................................................................................................448

Congure UDP Helper.............................................................................................................................................448

Important Points to Remember............................................................................................................................. 449

Enabling UDP Helper.....................................................................................................................................................449

Conguring a Broadcast Address................................................................................................................................ 449

Congurations Using UDP Helper............................................................................................................................... 450

UDP Helper with Broadcast-All Addresses.................................................................................................................450

UDP Helper with Subnet Broadcast Addresses..........................................................................................................451

UDP Helper with Congured Broadcast Addresses...................................................................................................451

UDP Helper with No Congured Broadcast Addresses............................................................................................452

Troubleshooting UDP Helper........................................................................................................................................452

25 IPv6 Routing............................................................................................................................................453

Protocol Overview.........................................................................................................................................................453

Extended Address Space........................................................................................................................................454

Stateless Autoconguration................................................................................................................................... 454

IPv6 Headers............................................................................................................................................................454

IPv6 Header Fields.................................................................................................................................................. 455

Extension Header Fields..........................................................................................................................................457

Addressing................................................................................................................................................................ 458

Implementing IPv6 with Dell EMC Networking OS...................................................................................................459

ICMPv6...........................................................................................................................................................................460

Path MTU Discovery......................................................................................................................................................461

IPv6 Neighbor Discovery...............................................................................................................................................461

IPv6 Neighbor Discovery of MTU Packets...........................................................................................................462

Conguration Task List for IPv6 RDNSS.................................................................................................................... 462

Conguring the IPv6 Recursive DNS Server....................................................................................................... 462

Debugging IPv6 RDNSS Information Sent to the Host .....................................................................................463

Displaying IPv6 RDNSS Information......................................................................................................................464

Secure Shell (SSH) Over an IPv6 Transport.............................................................................................................. 464

Conguration Tasks for IPv6........................................................................................................................................465

Adjusting Your CAM-Prole....................................................................................................................................465

Assigning an IPv6 Address to an Interface...........................................................................................................466

Assigning a Static IPv6 Route................................................................................................................................466

Conguring Telnet with IPv6.................................................................................................................................. 467

SNMP over IPv6......................................................................................................................................................467

16

Contents

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

Displaying an IPv6 Interface Information.............................................................................................................. 468

Showing IPv6 Routes..............................................................................................................................................468

Showing the Running-Conguration for an Interface......................................................................................... 470

Clearing IPv6 Routes...............................................................................................................................................470

Disabling ND Entry Timeout................................................................................................................................... 470

Conguring IPv6 RA Guard........................................................................................................................................... 471

Conguring IPv6 RA Guard on an Interface......................................................................................................... 472

Monitoring IPv6 RA Guard......................................................................................................................................473

26 iSCSI Optimization...................................................................................................................................474

iSCSI Optimization Overview....................................................................................................................................... 474

Monitoring iSCSI Trac Flows............................................................................................................................... 476

Application of Quality of Service to iSCSI Trac Flows......................................................................................476

Information Monitored in iSCSI Trac Flows....................................................................................................... 476

Detection and Auto-Conguration for Dell EqualLogic Arrays............................................................................477

Conguring Detection and Ports for Dell Compellent Arrays............................................................................. 477

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer................................................................. 478

Enable and Disable iSCSI Optimization................................................................................................................. 478

Default iSCSI Optimization Values............................................................................................................................... 479

iSCSI Optimization Prerequisites..................................................................................................................................479

Conguring iSCSI Optimization....................................................................................................................................479

Displaying iSCSI Optimization Information.................................................................................................................. 481

27 Intermediate System to Intermediate System...........................................................................................483

IS-IS Protocol Overview................................................................................................................................................483

IS-IS Addressing.............................................................................................................................................................483

Multi-Topology IS-IS...................................................................................................................................................... 484

Transition Mode....................................................................................................................................................... 484

Interface Support.....................................................................................................................................................485

Adjacencies...............................................................................................................................................................485

Graceful Restart............................................................................................................................................................ 485

Timers....................................................................................................................................................................... 485

Implementation Information..........................................................................................................................................485

Conguration Information.............................................................................................................................................486

Conguration Tasks for IS-IS..................................................................................................................................487

Conguring the Distance of a Route.....................................................................................................................494

Changing the IS-Type.............................................................................................................................................. 495

Redistributing IPv4 Routes..................................................................................................................................... 497

Redistributing IPv6 Routes.....................................................................................................................................498

Conguring Authentication Passwords.................................................................................................................499

Setting the Overload Bit......................................................................................................................................... 499

Debugging IS-IS.......................................................................................................................................................500

IS-IS Metric Styles......................................................................................................................................................... 501

Congure Metric Values................................................................................................................................................ 501

Maximum Values in the Routing Table................................................................................................................... 501

Contents

17

Change the IS-IS Metric Style in One Level Only................................................................................................ 501

Leaks from One Level to Another..........................................................................................................................503

Sample Congurations..................................................................................................................................................504

28 Link Aggregation Control Protocol (LACP).............................................................................................. 506

Introduction to Dynamic LAGs and LACP.................................................................................................................. 506

Important Points to Remember............................................................................................................................. 506

LACP Modes............................................................................................................................................................ 507

Conguring LACP Commands............................................................................................................................... 507

LACP Conguration Tasks............................................................................................................................................508

Creating a LAG.........................................................................................................................................................508

Conguring the LAG Interfaces as Dynamic........................................................................................................508

Setting the LACP Long Timeout........................................................................................................................... 509

Monitoring and Debugging LACP..........................................................................................................................509

Shared LAG State Tracking...........................................................................................................................................510

Conguring Shared LAG State Tracking................................................................................................................510

Important Points about Shared LAG State Tracking............................................................................................512

LACP Basic Conguration Example............................................................................................................................. 512

Congure a LAG on ALPHA.................................................................................................................................... 512

29 Layer 2..................................................................................................................................................... 521

Manage the MAC Address Table..................................................................................................................................521

Clearing the MAC Address Table............................................................................................................................521

Setting the Aging Time for Dynamic Entries.........................................................................................................521

Conguring a Static MAC Address........................................................................................................................522

Displaying the MAC Address Table........................................................................................................................ 522

MAC Learning Limit.......................................................................................................................................................522

Setting the MAC Learning Limit............................................................................................................................ 523

mac learning-limit Dynamic.....................................................................................................................................523

mac learning-limit mac-address-sticky................................................................................................................. 523

mac learning-limit station-move.............................................................................................................................524

mac learning-limit no-station-move.......................................................................................................................524

Learning Limit Violation Actions............................................................................................................................. 524

Setting Station Move Violation Actions................................................................................................................ 525

Recovering from Learning Limit and Station Move Violations........................................................................... 525

Disabling MAC Address Learning on the System.................................................................................................526

NIC Teaming................................................................................................................................................................... 526

Congure Redundant Pairs...........................................................................................................................................527

Important Points about Conguring Redundant Pairs........................................................................................ 529

Far-End Failure Detection.............................................................................................................................................530

FEFD State Changes................................................................................................................................................531

Conguring FEFD.................................................................................................................................................... 532

Enabling FEFD on an Interface...............................................................................................................................532

Debugging FEFD......................................................................................................................................................533

30 Link Layer Discovery Protocol (LLDP)..................................................................................................... 535

18

Contents

802.1AB (LLDP) Overview............................................................................................................................................535

Protocol Data Units................................................................................................................................................. 535

Optional TLVs.................................................................................................................................................................536

Management TLVs.................................................................................................................................................. 536

TIA-1057 (LLDP-MED) Overview................................................................................................................................ 538

TIA Organizationally Specic TLVs........................................................................................................................ 538

Congure LLDP..............................................................................................................................................................542

Related Conguration Tasks...................................................................................................................................542

Important Points to Remember............................................................................................................................. 542

LLDP Compatibility..................................................................................................................................................543

CONFIGURATION versus INTERFACE Congurations............................................................................................ 543

Enabling LLDP................................................................................................................................................................543

Disabling and Undoing LLDP.................................................................................................................................. 544

Enabling LLDP on Management Ports........................................................................................................................544

Disabling and Undoing LLDP on Management Ports.......................................................................................... 544

Advertising TLVs............................................................................................................................................................ 544

Storing and Viewing Unrecognized LLDP TLVs.........................................................................................................546

Reserved Unrecognized LLDP TLVs..................................................................................................................... 546

Organizational Specic Unrecognized LLDP TLVs..............................................................................................546

Viewing Unrecognized LLDP TLVs........................................................................................................................ 546

Viewing the LLDP Conguration..................................................................................................................................547

Viewing Information Advertised by Adjacent LLDP Neighbors................................................................................547

Examples of Viewing Information Advertised by Neighbors...............................................................................547

Conguring LLDPDU Intervals.....................................................................................................................................549

Conguring LLDP Notication Interval.......................................................................................................................550

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

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

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

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

31 Microsoft Network Load Balancing...........................................................................................................558

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Contents

19

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

33 Multiple Spanning Tree Protocol (MSTP)................................................................................................ 584

Protocol Overview.........................................................................................................................................................584

Spanning Tree Variations.............................................................................................................................................. 585

Implementation Information................................................................................................................................... 585

Congure Multiple Spanning Tree Protocol................................................................................................................585

Related Conguration Tasks...................................................................................................................................586

Enable Multiple Spanning Tree Globally...................................................................................................................... 586

Adding and Removing Interfaces.................................................................................................................................586

Creating Multiple Spanning Tree Instances................................................................................................................ 587

Inuencing MSTP Root Selection................................................................................................................................588

Interoperate with Non-Dell Bridges.............................................................................................................................588

Changing the Region Name or Revision..................................................................................................................... 589

Modifying Global Parameters.......................................................................................................................................589

Modifying the Interface Parameters........................................................................................................................... 590

Conguring an EdgePort...............................................................................................................................................591

Flush MAC Addresses after a Topology Change....................................................................................................... 592

MSTP Sample Congurations......................................................................................................................................592

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

CongurationSFTOS Example Running-Conguration.......................................................................................593

Debugging and Verifying MSTP Congurations........................................................................................................ 596

34 Multicast Features...................................................................................................................................598

Enabling IP Multicast.....................................................................................................................................................598

Implementation Information......................................................................................................................................... 598

Multicast Policies...........................................................................................................................................................599

20

Contents

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Dell PowerSwitch S4048-ON Owner's manual

Dell PowerSwitch S4048-ON Owner's manual

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