Dell PowerSwitch S4820T User guide

Dell Configuration Guide for the S4820T

System

9.10(0.0)

Notes, cautions, and warnings

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

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.

Dell logo are trademarks of Dell Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be

trademarks of their respective companies.

2016 - 04

Rev. A00

Contents

1 About this Guide.................................................................................................................................................... 32

Audience.....................................................................................................................................................................32

Conventions.............................................................................................................................................................. 32

Related Documents................................................................................................................................................. 32

2 Configuration Fundamentals.............................................................................................................................. 33

Accessing the Command Line...............................................................................................................................33

CLI Modes.................................................................................................................................................................. 33

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

The do Command.................................................................................................................................................... 37

Undoing Commands............................................................................................................................................... 38

Obtaining Help..........................................................................................................................................................39

Entering and Editing Commands..........................................................................................................................39

Command History....................................................................................................................................................40

Filtering show Command Outputs.......................................................................................................................40

Example of the grep Keyword......................................................................................................................... 40

Multiple Users in Configuration Mode................................................................................................................. 41

3 Getting Started...................................................................................................................................................... 42

Console Access.........................................................................................................................................................43

Serial Console......................................................................................................................................................43

Accessing the CLI Interface and Running Scripts Using SSH..........................................................................44

Entering CLI commands Using an SSH Connection...................................................................................44

Executing Local CLI Scripts Using an SSH Connection............................................................................. 44

Default Configuration..............................................................................................................................................45

Configuring a Host Name.......................................................................................................................................45

Accessing the System Remotely........................................................................................................................... 45

Accessing the System Remotely..................................................................................................................... 45

Configure the Management Port IP Address................................................................................................46

Configure a Management Route.....................................................................................................................46

Configuring a Username and Password........................................................................................................46

Configuring the Enable Password.........................................................................................................................47

Configuration File Management............................................................................................................................47

Copy Files to and from the System.................................................................................................................47

Mounting an NFS File System.......................................................................................................................... 48

Save the Running-Configuration.................................................................................................................... 50

Configure the Overload Bit for a Startup Scenario..................................................................................... 50

Viewing Files........................................................................................................................................................ 50

Managing the File System....................................................................................................................................... 51

Enabling Software Features on Devices Using a Command Option.............................................................52

View Command History..........................................................................................................................................52

Upgrading Dell Networking OS............................................................................................................................. 53

Using HTTP for File Transfers.................................................................................................................................53

Contents

3

Verify Software Images Before Installation......................................................................................................... 53

4 Management.......................................................................................................................................................... 55

Configuring Privilege Levels...................................................................................................................................55

Creating a Custom Privilege Level.................................................................................................................. 55

Removing a Command from EXEC Mode.................................................................................................... 56

Moving a Command from EXEC Privilege Mode to EXEC Mode............................................................. 56

Allowing Access to CONFIGURATION Mode Commands........................................................................ 56

Allowing Access to Different Modes.............................................................................................................. 56

Applying a Privilege Level to a Username..................................................................................................... 58

Applying a Privilege Level to a Terminal Line............................................................................................... 58

Configuring Logging................................................................................................................................................58

Audit and Security Logs.....................................................................................................................................59

Configuring Logging Format ......................................................................................................................... 60

Display the Logging Buffer and the Logging Configuration......................................................................61

Setting Up a Secure Connection to a Syslog Server...................................................................................62

Log Messages in the Internal Buffer..................................................................................................................... 63

Configuration Task List for System Log Management............................................................................... 63

Disabling System Logging...................................................................................................................................... 63

Sending System Messages to a Syslog Server....................................................................................................63

Configuring a UNIX System as a Syslog Server............................................................................................64

Track Login Activity..................................................................................................................................................64

Restrictions for Tracking Login Activity......................................................................................................... 64

Configuring Login Activity Tracking............................................................................................................... 64

Display Login Statistics...................................................................................................................................... 65

Limit Concurrent Login Sessions.......................................................................................................................... 66

Restrictions for Limiting the Number of Concurrent Sessions.................................................................66

Configuring Concurrent Session Limit.......................................................................................................... 66

Enabling the System to Clear Existing Sessions........................................................................................... 67

Changing System Logging Settings......................................................................................................................68

Display the Logging Buffer and the Logging Configuration........................................................................... 68

Configuring a UNIX Logging Facility Level......................................................................................................... 69

Synchronizing Log Messages.................................................................................................................................70

Enabling Timestamp on Syslog Messages.......................................................................................................... 70

File Transfer Services................................................................................................................................................71

Configuration Task List for File Transfer Services........................................................................................ 71

Enabling the FTP Server..................................................................................................................................... 71

Configuring FTP Server Parameters................................................................................................................72

Configuring FTP Client Parameters................................................................................................................ 72

Terminal Lines........................................................................................................................................................... 73

Denying and Permitting Access to a Terminal Line.....................................................................................73

Configuring Login Authentication for Terminal Lines................................................................................ 74

Setting Timeout for EXEC Privilege Mode...........................................................................................................75

Using Telnet to get to Another Network Device............................................................................................... 75

Lock CONFIGURATION Mode...............................................................................................................................76

Viewing the Configuration Lock Status..........................................................................................................76

Recovering from a Forgotten Password..............................................................................................................76

9.10(0.0)

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Recovering from a Forgotten Enable Password...........................................................................................77

Recovering from a Failed Start.............................................................................................................................. 78

Restoring the Factory Default Settings................................................................................................................ 78

Important Points to Remember.......................................................................................................................79

Restoring Factory Default Environment Variables.......................................................................................79

5 802.1X...................................................................................................................................................................... 81

Port-Authentication Process................................................................................................................................. 83

EAP over RADIUS................................................................................................................................................84

Configuring 802.1X.................................................................................................................................................. 85

Related Configuration Tasks............................................................................................................................ 85

Important Points to Remember............................................................................................................................ 85

Enabling 802.1X........................................................................................................................................................ 86

Configuring MAC addresses for a do1x Profile.................................................................................................. 87

Configuring Request Identity Re-Transmissions...............................................................................................88

Configuring a Quiet Period after a Failed Authentication......................................................................... 88

Forcibly Authorizing or Unauthorizing a Port.................................................................................................... 89

Re-Authenticating a Port........................................................................................................................................90

Configuring Timeouts..............................................................................................................................................91

Configuring Dynamic VLAN Assignment with Port Authentication...............................................................92

Guest and Authentication-Fail VLANs..................................................................................................................93

Configuring a Guest VLAN................................................................................................................................93

Configuring an Authentication-Fail VLAN.....................................................................................................93

Configuring dot1x Profile ...................................................................................................................................... 94

Configuring the Static MAB and MAB Profile .................................................................................................... 95

Configuring Critical VLAN ......................................................................................................................................95

6 Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM).................................97

Optimizing CAM Utilization During the Attachment of ACLs to VLANs....................................................... 97

Guidelines for Configuring ACL VLAN Groups.................................................................................................. 98

Configuring ACL VLAN Groups and Configuring FP Blocks for VLAN Parameters....................................98

Configuring ACL VLAN Groups....................................................................................................................... 98

Configuring FP Blocks for VLAN Parameters................................................................................................99

Viewing CAM Usage.............................................................................................................................................. 100

Allocating FP Blocks for VLAN Processes..........................................................................................................101

7 Access Control Lists (ACLs)............................................................................................................................... 103

IP Access Control Lists (ACLs)............................................................................................................................. 104

CAM Usage.........................................................................................................................................................105

Implementing ACLs on Dell Networking OS.............................................................................................. 105

IP Fragment Handling............................................................................................................................................107

IP Fragments ACL Examples...........................................................................................................................107

Layer 4 ACL Rules Examples.......................................................................................................................... 107

Configure a Standard IP ACL............................................................................................................................... 108

Configuring a Standard IP ACL Filter............................................................................................................109

Configure an Extended IP ACL............................................................................................................................ 110

Configuring Filters with a Sequence Number.............................................................................................110

Contents

5

Configuring Filters Without a Sequence Number...................................................................................... 111

Configure Layer 2 and Layer 3 ACLs...................................................................................................................112

Assign an IP ACL to an Interface..........................................................................................................................112

Applying an IP ACL..................................................................................................................................................113

Counting ACL Hits............................................................................................................................................ 113

Configure Ingress ACLs......................................................................................................................................... 114

Configure Egress ACLs.......................................................................................................................................... 114

Applying Egress Layer 3 ACLs (Control-Plane)........................................................................................... 115

IP Prefix Lists............................................................................................................................................................ 115

Implementation Information.......................................................................................................................... 116

Configuration Task List for Prefix Lists......................................................................................................... 116

ACL Resequencing.................................................................................................................................................120

Resequencing an ACL or Prefix List..............................................................................................................120

Route Maps...............................................................................................................................................................121

Implementation Information.......................................................................................................................... 121

Important Points to Remember...........................................................................................................................122

Configuration Task List for Route Maps.......................................................................................................122

Configuring Match Routes..............................................................................................................................124

Configuring Set Conditions............................................................................................................................ 125

Configure a Route Map for Route Redistribution......................................................................................126

Configure a Route Map for Route Tagging................................................................................................. 127

Continue Clause................................................................................................................................................127

Logging of ACL Processes.................................................................................................................................... 127

Guidelines for Configuring ACL Logging.....................................................................................................128

Configuring ACL Logging............................................................................................................................... 129

Flow-Based Monitoring Support for ACLs........................................................................................................ 129

Behavior of Flow-Based Monitoring.............................................................................................................130

Enabling Flow-Based Monitoring.................................................................................................................. 131

8 Bidirectional Forwarding Detection (BFD)..................................................................................................... 133

How BFD Works......................................................................................................................................................133

BFD Packet Format...........................................................................................................................................134

BFD Sessions......................................................................................................................................................135

BFD Three-Way Handshake........................................................................................................................... 136

Session State Changes.....................................................................................................................................138

Important Points to Remember.......................................................................................................................... 138

Configure BFD.........................................................................................................................................................138

Configure BFD for Physical Ports..................................................................................................................139

Configure BFD for Static Routes................................................................................................................... 142

Configure BFD for OSPF................................................................................................................................. 144

Configure BFD for OSPFv3............................................................................................................................. 146

Configure BFD for IS-IS...................................................................................................................................148

Configure BFD for BGP................................................................................................................................... 150

Configure BFD for VRRP..................................................................................................................................157

Configuring Protocol Liveness.......................................................................................................................159

Troubleshooting BFD.......................................................................................................................................159

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9 Border Gateway Protocol IPv4 (BGPv4)..........................................................................................................161

Autonomous Systems (AS)....................................................................................................................................161

Sessions and Peers................................................................................................................................................. 163

Establish a Session............................................................................................................................................164

Route Reflectors.....................................................................................................................................................164

BGP Attributes......................................................................................................................................................... 165

Best Path Selection Criteria............................................................................................................................166

Weight.................................................................................................................................................................168

Local Preference...............................................................................................................................................168

Multi-Exit Discriminators (MEDs)...................................................................................................................168

Origin...................................................................................................................................................................169

AS Path................................................................................................................................................................ 170

Next Hop.............................................................................................................................................................170

Multiprotocol BGP..................................................................................................................................................170

Implement BGP with Dell Networking OS.........................................................................................................171

Additional Path (Add-Path) Support.............................................................................................................. 171

Advertise IGP Cost as MED for Redistributed Routes................................................................................171

Ignore Router-ID in Best-Path Calculation.................................................................................................172

Four-Byte AS Numbers....................................................................................................................................172

AS4 Number Representation..........................................................................................................................172

AS Number Migration.......................................................................................................................................174

BGP4 Management Information Base (MIB)............................................................................................... 176

Important Points to Remember.....................................................................................................................176

Configuration Information....................................................................................................................................177

BGP Configuration..................................................................................................................................................177

Enabling BGP..................................................................................................................................................... 178

Configuring AS4 Number Representations................................................................................................. 181

Configuring Peer Groups................................................................................................................................182

Configuring BGP Fast Fall-Over.................................................................................................................... 185

Configuring Passive Peering...........................................................................................................................186

Maintaining Existing AS Numbers During an AS Migration...................................................................... 187

Allowing an AS Number to Appear in its Own AS Path............................................................................ 188

Enabling Graceful Restart............................................................................................................................... 189

Enabling Neighbor Graceful Restart.............................................................................................................190

Filtering on an AS-Path Attribute.................................................................................................................. 190

Regular Expressions as Filters.........................................................................................................................191

Redistributing Routes.......................................................................................................................................193

Enabling Additional Paths............................................................................................................................... 193

Configuring IP Community Lists................................................................................................................... 194

Configuring an IP Extended Community List............................................................................................. 195

Filtering Routes with Community Lists........................................................................................................ 196

Manipulating the COMMUNITY Attribute....................................................................................................196

Changing MED Attributes............................................................................................................................... 198

Changing the LOCAL_PREFERENCE Attribute...........................................................................................198

Configuring the local System or a Different System to be the Next Hop for BGP-Learned

Routes................................................................................................................................................................. 199

Contents

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Changing the WEIGHT Attribute................................................................................................................... 199

Enabling Multipath...........................................................................................................................................200

Filtering BGP Routes........................................................................................................................................200

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

Filtering BGP Routes Using AS-PATH Information................................................................................... 202

Configuring BGP Route Reflectors...............................................................................................................203

Aggregating Routes......................................................................................................................................... 203

Configuring BGP Confederations.................................................................................................................204

Enabling Route Flap Dampening.................................................................................................................. 204

Changing BGP Timers.....................................................................................................................................206

Enabling BGP Neighbor Soft-Reconfiguration.......................................................................................... 207

Route Map Continue....................................................................................................................................... 208

Enabling MBGP Configurations.......................................................................................................................... 208

BGP Regular Expression Optimization.............................................................................................................. 209

Debugging BGP......................................................................................................................................................209

Storing Last and Bad PDUs.............................................................................................................................210

Capturing PDUs................................................................................................................................................. 211

PDU Counters....................................................................................................................................................212

Sample Configurations..........................................................................................................................................212

10 Content Addressable Memory (CAM)............................................................................................................218

CAM Allocation....................................................................................................................................................... 218

Test CAM Usage..................................................................................................................................................... 220

View CAM Profiles..................................................................................................................................................220

View CAM-ACL Settings........................................................................................................................................221

View CAM Usage.................................................................................................................................................... 222

CAM Optimization..................................................................................................................................................223

Troubleshoot CAM Profiling................................................................................................................................ 223

QoS CAM Region Limitation.......................................................................................................................... 223

11 Control Plane Policing (CoPP)........................................................................................................................224

Configure Control Plane Policing.......................................................................................................................226

Configuring CoPP for Protocols................................................................................................................... 226

Configuring CoPP for CPU Queues............................................................................................................. 228

CoPP for OSPFv3 Packets.............................................................................................................................. 229

Configuring CoPP for OSPFv3.......................................................................................................................232

Displaying CoPP Configuration ....................................................................................................................233

12 Data Center Bridging (DCB)............................................................................................................................ 235

Ethernet Enhancements in Data Center Bridging...........................................................................................235

Priority-Based Flow Control.......................................................................................................................... 236

Enhanced Transmission Selection................................................................................................................ 237

Data Center Bridging Exchange Protocol (DCBx).....................................................................................238

Data Center Bridging in a Traffic Flow.........................................................................................................239

Enabling Data Center Bridging............................................................................................................................239

DCB Maps and its Attributes.......................................................................................................................... 240

Data Center Bridging: Default Configuration...................................................................................................241

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Configuring Priority-Based Flow Control..........................................................................................................241

Configuring Lossless Queues........................................................................................................................ 242

Configuring PFC in a DCB Map...........................................................................................................................243

PFC Configuration Notes................................................................................................................................243

PFC Prerequisites and Restrictions...............................................................................................................244

Applying a DCB Map on a Port............................................................................................................................244

Configuring PFC without a DCB Map................................................................................................................245

Configuring Lossless QueuesExample:....................................................................................................... 245

Priority-Based Flow Control Using Dynamic Buffer Method........................................................................247

Pause and Resume of Traffic......................................................................................................................... 247

Buffer Sizes for Lossless or PFC Packets..................................................................................................... 247

Behavior of Tagged Packets................................................................................................................................ 248

Configuration Example for DSCP and PFC Priorities..................................................................................... 248

Using PFC to Manage Converged Ethernet Traffic.........................................................................................249

Configure Enhanced Transmission Selection..................................................................................................249

ETS Prerequisites and Restrictions............................................................................................................... 249

Creating an ETS Priority Group..................................................................................................................... 250

ETS Operation with DCBx...............................................................................................................................251

Configuring Bandwidth Allocation for DCBx CIN......................................................................................251

Configuring ETS in a DCB Map......................................................................................................................252

Hierarchical Scheduling in ETS Output Policies.............................................................................................. 253

Using ETS to Manage Converged Ethernet Traffic......................................................................................... 254

Applying DCB Policies in a Switch Stack...........................................................................................................254

Configure a DCBx Operation.............................................................................................................................. 254

DCBx Operation................................................................................................................................................255

DCBx Port Roles............................................................................................................................................... 255

DCB Configuration Exchange....................................................................................................................... 256

Configuration Source Election...................................................................................................................... 257

Propagation of DCB Information.................................................................................................................. 257

Auto-Detection and Manual Configuration of the DCBx Version......................................................... 257

DCBx Example.................................................................................................................................................. 258

DCBx Prerequisites and Restrictions............................................................................................................258

Configuring DCBx............................................................................................................................................ 259

Verifying the DCB Configuration........................................................................................................................ 262

Sample DCB Configuration..................................................................................................................................270

PFC and ETS Configuration Command Examples.................................................................................... 272

QoS dot1p Traffic Classification and Queue Assignment..............................................................................272

Configuring the Dynamic Buffer Method..........................................................................................................273

13 Dynamic Host Configuration Protocol (DHCP)...........................................................................................275

DHCP Packet Format and Options.....................................................................................................................275

Assign an IP Address using DHCP.......................................................................................................................277

Implementation Information............................................................................................................................... 278

Configure the System to be a DHCP Server.....................................................................................................278

Configuring the Server for Automatic Address Allocation...................................................................... 279

Specifying a Default Gateway........................................................................................................................280

Configure a Method of Hostname Resolution...........................................................................................281

Contents

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Using DNS for Address Resolution................................................................................................................281

Using NetBIOS WINS for Address Resolution.............................................................................................281

Creating Manual Binding Entries................................................................................................................... 281

Debugging the DHCP Server......................................................................................................................... 282

Using DHCP Clear Commands..................................................................................................................... 282

Configure the System to be a Relay Agent.......................................................................................................282

Configure the System to be a DHCP Client.....................................................................................................284

DHCP Client Operation with Other Features.............................................................................................284

DHCP Client on a Management Interface.................................................................................................. 285

Configure the System for User Port Stacking (Option 230)......................................................................... 286

Configure Secure DHCP.......................................................................................................................................286

Option 82...........................................................................................................................................................286

DHCP Snooping................................................................................................................................................287

Configuring the DHCP secondary-subnet................................................................................................. 290

Drop DHCP Packets on Snooped VLANs Only..........................................................................................290

Dynamic ARP Inspection.................................................................................................................................291

Configuring Dynamic ARP Inspection......................................................................................................... 292

Source Address Validation....................................................................................................................................293

Enabling IP Source Address Validation........................................................................................................ 293

DHCP MAC Source Address Validation....................................................................................................... 294

Enabling IP+MAC Source Address Validation............................................................................................ 294

Viewing the Number of SAV Dropped Packets..........................................................................................295

Clearing the Number of SAV Dropped Packets......................................................................................... 295

14 Equal Cost Multi-Path (ECMP)........................................................................................................................296

ECMP for Flow-Based Affinity............................................................................................................................. 296

Configuring the Hash Algorithm...................................................................................................................296

Enabling Deterministic ECMP Next Hop.....................................................................................................296

Configuring the Hash Algorithm Seed.........................................................................................................297

Link Bundle Monitoring.........................................................................................................................................297

Managing ECMP Group Paths....................................................................................................................... 298

Creating an ECMP Group Bundle.................................................................................................................298

Modifying the ECMP Group Threshold....................................................................................................... 298

RTAG7.......................................................................................................................................................................299

Flow-based Hashing for ECMP...........................................................................................................................300

15 FIP Snooping......................................................................................................................................................303

Fibre Channel over Ethernet................................................................................................................................303

Ensure Robustness in a Converged Ethernet Network..................................................................................303

FIP Snooping on Ethernet Bridges..................................................................................................................... 305

FIP Snooping in a Switch Stack........................................................................................................................... 307

Using FIP Snooping................................................................................................................................................307

FIP Snooping Prerequisites.............................................................................................................................307

Important Points to Remember.................................................................................................................... 307

Enabling the FCoE Transit Feature............................................................................................................... 308

Enable FIP Snooping on VLANs.................................................................................................................... 308

Configure the FC-MAP Value........................................................................................................................ 309

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Configure a Port for a Bridge-to-Bridge Link............................................................................................ 309

Configure a Port for a Bridge-to-FCF Link.................................................................................................309

Impact on Other Software Features.............................................................................................................309

FIP Snooping Restrictions...............................................................................................................................310

Configuring FIP Snooping...............................................................................................................................310

Displaying FIP Snooping Information................................................................................................................. 311

FCoE Transit Configuration Example................................................................................................................. 316

16 FIPS Cryptography............................................................................................................................................ 318

Configuration Tasks............................................................................................................................................... 318

Preparing the System.............................................................................................................................................318

Enabling FIPS Mode............................................................................................................................................... 319

Generating Host-Keys........................................................................................................................................... 319

Monitoring FIPS Mode Status...............................................................................................................................319

Disabling FIPS Mode..............................................................................................................................................320

17 Force10 Resilient Ring Protocol (FRRP)........................................................................................................ 321

Protocol Overview..................................................................................................................................................321

Ring Status......................................................................................................................................................... 322

Multiple FRRP Rings......................................................................................................................................... 322

Important FRRP Points.................................................................................................................................... 323

Important FRRP Concepts..............................................................................................................................324

Implementing FRRP............................................................................................................................................... 325

FRRP Configuration............................................................................................................................................... 325

Creating the FRRP Group............................................................................................................................... 325

Configuring the Control VLAN...................................................................................................................... 326

Configuring and Adding the Member VLANs............................................................................................. 327

Setting the FRRP Timers..................................................................................................................................328

Clearing the FRRP Counters.......................................................................................................................... 328

Viewing the FRRP Configuration...................................................................................................................328

Viewing the FRRP Information...................................................................................................................... 328

Troubleshooting FRRP.......................................................................................................................................... 329

Configuration Checks..................................................................................................................................... 329

Sample Configuration and Topology................................................................................................................ 329

18 GARP VLAN Registration Protocol (GVRP)................................................................................................... 331

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

Configure GVRP......................................................................................................................................................332

Related Configuration Tasks.......................................................................................................................... 332

Enabling GVRP Globally........................................................................................................................................333

Enabling GVRP on a Layer 2 Interface............................................................................................................... 333

Configure GVRP Registration.............................................................................................................................. 333

Configure a GARP Timer...................................................................................................................................... 334

RPM Redundancy...................................................................................................................................................334

19 High Availability (HA)........................................................................................................................................336

Component Redundancy.....................................................................................................................................336

Contents

11

RPM Redundancy............................................................................................................................................. 336

Automatic and Manual Stack Unit Failover.................................................................................................338

Support for RPM Redundancy by Dell Networking OS Version.............................................................339

Synchronization between Management and Standby Units...................................................................339

Configuring RPM Redundancy...................................................................................................................... 339

Online Insertion and Removal.............................................................................................................................340

RPM Online Insertion and Removal..............................................................................................................341

Linecard Online Insertion and Removal...................................................................................................... 341

Hitless Behavior...................................................................................................................................................... 342

Graceful Restart......................................................................................................................................................343

Software Resiliency................................................................................................................................................343

Software Component Health Monitoring................................................................................................... 343

System Health Monitoring..............................................................................................................................343

Failure and Event Logging.............................................................................................................................. 343

Hot-Lock Behavior................................................................................................................................................ 344

Process Restartability............................................................................................................................................ 344

Enabling Process Restartability......................................................................................................................345

20 Internet Group Management Protocol (IGMP)........................................................................................... 346

IGMP Implementation Information....................................................................................................................346

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

IGMP Version 2................................................................................................................................................. 346

IGMP Version 3................................................................................................................................................. 348

Configure IGMP......................................................................................................................................................350

Related Configuration Tasks...........................................................................................................................351

Viewing IGMP Enabled Interfaces....................................................................................................................... 351

Selecting an IGMP Version....................................................................................................................................351

Viewing IGMP Groups........................................................................................................................................... 352

Adjusting Timers..................................................................................................................................................... 352

Adjusting Query and Response Timers........................................................................................................352

Enabling IGMP Immediate-Leave....................................................................................................................... 353

IGMP Snooping.......................................................................................................................................................353

IGMP Snooping Implementation Information............................................................................................353

Configuring IGMP Snooping..........................................................................................................................353

Removing a Group-Port Association........................................................................................................... 354

Disabling Multicast Flooding..........................................................................................................................354

Specifying a Port as Connected to a Multicast Router.............................................................................355

Configuring the Switch as Querier............................................................................................................... 355

Fast Convergence after MSTP Topology Changes.........................................................................................356

Egress Interface Selection (EIS) for HTTP and IGMP Applications...............................................................356

Protocol Separation.........................................................................................................................................356

Enabling and Disabling Management Egress Interface Selection..........................................................357

Handling of Management Route Configuration........................................................................................358

Handling of Switch-Initiated Traffic............................................................................................................. 359

Handling of Switch-Destined Traffic............................................................................................................359

Handling of Transit Traffic (Traffic Separation)..........................................................................................360

Mapping of Management Applications and Traffic Type.........................................................................360

9.10(0.0)

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Behavior of Various Applications for Switch-Initiated Traffic ................................................................ 361

Behavior of Various Applications for Switch-Destined Traffic .............................................................. 362

Interworking of EIS With Various Applications...........................................................................................363

Designating a Multicast Router Interface..........................................................................................................363

21 Interfaces............................................................................................................................................................ 365

Basic Interface Configuration..............................................................................................................................365

Advanced Interface Configuration..................................................................................................................... 365

Interface Types....................................................................................................................................................... 366

View Basic Interface Information....................................................................................................................... 366

Resetting an Interface to its Factory Default State......................................................................................... 368

Enabling Energy Efficient Ethernet.....................................................................................................................369

View EEE Information............................................................................................................................................369

Clear EEE Counters................................................................................................................................................373

Enabling a Physical Interface............................................................................................................................... 374

Physical Interfaces..................................................................................................................................................374

Configuration Task List for Physical Interfaces..........................................................................................374

Overview of Layer Modes............................................................................................................................... 375

Configuring Layer 2 (Data Link) Mode......................................................................................................... 375

Configuring Layer 2 (Interface) Mode..........................................................................................................376

Configuring Layer 3 (Network) Mode...........................................................................................................376

Configuring Layer 3 (Interface) Mode..........................................................................................................376

Egress Interface Selection (EIS)........................................................................................................................... 377

Important Points to Remember.....................................................................................................................377

Configuring EIS..................................................................................................................................................377

Management Interfaces........................................................................................................................................378

Configuring Management Interfaces........................................................................................................... 378

Configuring a Management Interface on an Ethernet Port.....................................................................379

VLAN Interfaces......................................................................................................................................................380

Loopback Interfaces.............................................................................................................................................. 381

Null Interfaces......................................................................................................................................................... 381

Port Channel Interfaces........................................................................................................................................ 381

Port Channel Definition and Standards.......................................................................................................382

Port Channel Benefits..................................................................................................................................... 382

Port Channel Implementation.......................................................................................................................382

Interfaces in Port Channels............................................................................................................................383

Configuration Tasks for Port Channel Interfaces......................................................................................383

Creating a Port Channel................................................................................................................................. 383

Adding a Physical Interface to a Port Channel.......................................................................................... 384

Reassigning an Interface to a New Port Channel......................................................................................385

Configuring the Minimum Oper Up Links in a Port Channel..................................................................386

Adding or Removing a Port Channel from a VLAN...................................................................................386

Assigning an IP Address to a Port Channel.................................................................................................387

Deleting or Disabling a Port Channel.......................................................................................................... 388

Load Balancing Through Port Channels..................................................................................................... 388

Changing the Hash Algorithm.......................................................................................................................388

Bulk Configuration.................................................................................................................................................389

Contents

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Interface Range................................................................................................................................................ 389

Bulk Configuration Examples........................................................................................................................ 390

Defining Interface Range Macros........................................................................................................................391

Define the Interface Range.............................................................................................................................391

Choosing an Interface-Range Macro...........................................................................................................391

Monitoring and Maintaining Interfaces............................................................................................................. 392

Maintenance Using TDR................................................................................................................................. 393

Splitting QSFP Ports to SFP+ Ports.....................................................................................................................393

Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port..........................................................................394

Important Points to Remember.................................................................................................................... 394

Example Scenarios........................................................................................................................................... 395

Configuring wavelength for 10–Gigabit SFP+ optics.................................................................................... 398

Link Dampening..................................................................................................................................................... 398

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

Enabling Link Dampening...............................................................................................................................399

Link Bundle Monitoring........................................................................................................................................ 400

Using Ethernet Pause Frames for Flow Control.............................................................................................. 401

Enabling Pause Frames................................................................................................................................... 402

Configure the MTU Size on an Interface.......................................................................................................... 402

Port-Pipes................................................................................................................................................................403

Auto-Negotiation on Ethernet Interfaces.........................................................................................................403

Setting the Speed and Duplex Mode of Ethernet Interfaces.................................................................. 403

Set Auto-Negotiation Options...................................................................................................................... 405

View Advanced Interface Information...............................................................................................................406

Configuring the Interface Sampling Size.................................................................................................... 406

Dynamic Counters.................................................................................................................................................407

Clearing Interface Counters...........................................................................................................................407

Compressing Configuration Files.......................................................................................................................408

22 Internet Protocol Security (IPSec)................................................................................................................. 412

Configuring IPSec ..................................................................................................................................................412

23 IPv4 Routing...................................................................................................................................................... 414

IP Addresses.............................................................................................................................................................415

Implementation Information..........................................................................................................................415

Configuration Tasks for IP Addresses.................................................................................................................415

Assigning IP Addresses to an Interface.............................................................................................................. 415

Configuring Static Routes.....................................................................................................................................416

Configure Static Routes for the Management Interface................................................................................417

IPv4 Path MTU Discovery Overview...................................................................................................................418

Using the Configured Source IP Address in ICMP Messages........................................................................418

Configuring the ICMP Source Interface...................................................................................................... 418

Configuring the Duration to Establish a TCP Connection............................................................................ 419

Enabling Directed Broadcast............................................................................................................................... 419

Resolution of Host Names................................................................................................................................... 419

Enabling Dynamic Resolution of Host Names................................................................................................ 420

Specifying the Local System Domain and a List of Domains....................................................................... 420

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Configuring DNS with Traceroute...................................................................................................................... 421

ARP............................................................................................................................................................................ 421

Configuration Tasks for ARP................................................................................................................................422

Configuring Static ARP Entries............................................................................................................................ 422

Enabling Proxy ARP................................................................................................................................................422

Clearing ARP Cache...............................................................................................................................................423

ARP Learning via Gratuitous ARP........................................................................................................................423

Enabling ARP Learning via Gratuitous ARP.......................................................................................................423

ARP Learning via ARP Request............................................................................................................................ 424

Configuring ARP Retries....................................................................................................................................... 424

ICMP..........................................................................................................................................................................425

Configuration Tasks for ICMP............................................................................................................................. 425

Enabling ICMP Unreachable Messages............................................................................................................. 425

UDP Helper..............................................................................................................................................................426

Configure UDP Helper.................................................................................................................................... 426

Important Points to Remember.................................................................................................................... 426

Enabling UDP Helper.............................................................................................................................................426

Configuring a Broadcast Address....................................................................................................................... 426

Configurations Using UDP Helper......................................................................................................................427

UDP Helper with Broadcast-All Addresses....................................................................................................... 427

UDP Helper with Subnet Broadcast Addresses............................................................................................... 428

UDP Helper with Configured Broadcast Addresses....................................................................................... 428

UDP Helper with No Configured Broadcast Addresses.................................................................................429

Troubleshooting UDP Helper..............................................................................................................................429

24 IPv6 Routing......................................................................................................................................................430

Protocol Overview.................................................................................................................................................430

Extended Address Space.................................................................................................................................431

Stateless Autoconfiguration........................................................................................................................... 431

IPv6 Headers......................................................................................................................................................431

IPv6 Header Fields............................................................................................................................................432

Extension Header Fields..................................................................................................................................434

Addressing..........................................................................................................................................................435

Implementing IPv6 with Dell Networking OS..................................................................................................436

ICMPv6..................................................................................................................................................................... 437

Path MTU Discovery..............................................................................................................................................438

IPv6 Neighbor Discovery......................................................................................................................................438

IPv6 Neighbor Discovery of MTU Packets..................................................................................................439

Configuration Task List for IPv6 RDNSS............................................................................................................439

Configuring the IPv6 Recursive DNS Server...............................................................................................439

Debugging IPv6 RDNSS Information Sent to the Host ...........................................................................440

Displaying IPv6 RDNSS Information............................................................................................................ 440

Secure Shell (SSH) Over an IPv6 Transport.......................................................................................................441

Configuration Tasks for IPv6................................................................................................................................441

Adjusting Your CAM-Profile........................................................................................................................... 441

Assigning an IPv6 Address to an Interface..................................................................................................442

Assigning a Static IPv6 Route.........................................................................................................................443

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Configuring Telnet with IPv6.........................................................................................................................443

SNMP over IPv6................................................................................................................................................ 443

Displaying IPv6 Information...........................................................................................................................444

Displaying an IPv6 Interface Information....................................................................................................444

Showing IPv6 Routes.......................................................................................................................................445

Showing the Running-Configuration for an Interface.............................................................................446

Clearing IPv6 Routes....................................................................................................................................... 447

Configuring IPv6 RA Guard..................................................................................................................................447

Configuring IPv6 RA Guard on an Interface...............................................................................................449

Monitoring IPv6 RA Guard..............................................................................................................................449

25 iSCSI Optimization........................................................................................................................................... 450

iSCSI Optimization Overview.............................................................................................................................. 450

Monitoring iSCSI Traffic Flows.......................................................................................................................451

Application of Quality of Service to iSCSI Traffic Flows...........................................................................452

Information Monitored in iSCSI Traffic Flows............................................................................................ 452

Detection and Auto-Configuration for Dell EqualLogic Arrays..............................................................453

Configuring Detection and Ports for Dell Compellent Arrays................................................................453

Synchronizing iSCSI Sessions Learned on VLT-Lags with VLT-Peer.................................................... 454

Enable and Disable iSCSI Optimization.......................................................................................................454

Default iSCSI Optimization Values......................................................................................................................455

iSCSI Optimization Prerequisites........................................................................................................................ 455

Configuring iSCSI Optimization..........................................................................................................................455

Displaying iSCSI Optimization Information...................................................................................................... 457

26 Intermediate System to Intermediate System.............................................................................................459

IS-IS Protocol Overview....................................................................................................................................... 459

IS-IS Addressing......................................................................................................................................................459

Multi-Topology IS-IS.............................................................................................................................................460

Transition Mode............................................................................................................................................... 460

Interface Support..............................................................................................................................................461

Adjacencies........................................................................................................................................................461

Graceful Restart...................................................................................................................................................... 461

Timers................................................................................................................................................................. 461

Implementation Information............................................................................................................................... 462

Configuration Information...................................................................................................................................462

Configuration Tasks for IS-IS.........................................................................................................................463

Configuring the Distance of a Route........................................................................................................... 470

Changing the IS-Type......................................................................................................................................471

Redistributing IPv4 Routes..............................................................................................................................473

Redistributing IPv6 Routes............................................................................................................................. 474

Configuring Authentication Passwords....................................................................................................... 475

Setting the Overload Bit..................................................................................................................................475

Debugging IS-IS................................................................................................................................................476

IS-IS Metric Styles...................................................................................................................................................477

Configure Metric Values........................................................................................................................................477

Maximum Values in the Routing Table........................................................................................................ 477

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Change the IS-IS Metric Style in One Level Only...................................................................................... 477

Leaks from One Level to Another.................................................................................................................479

Sample Configurations.........................................................................................................................................480

27 Link Aggregation Control Protocol (LACP)..................................................................................................482

Introduction to Dynamic LAGs and LACP........................................................................................................ 482

Important Points to Remember.................................................................................................................... 482

LACP Modes...................................................................................................................................................... 483

Configuring LACP Commands......................................................................................................................483

LACP Configuration Tasks................................................................................................................................... 484

Creating a LAG..................................................................................................................................................484

Configuring the LAG Interfaces as Dynamic..............................................................................................484

Setting the LACP Long Timeout....................................................................................................................485

Monitoring and Debugging LACP.................................................................................................................485

Shared LAG State Tracking.................................................................................................................................. 486

Configuring Shared LAG State Tracking......................................................................................................486

Important Points about Shared LAG State Tracking................................................................................. 487

LACP Basic Configuration Example................................................................................................................... 488

Configure a LAG on ALPHA........................................................................................................................... 488

28 Layer 2.................................................................................................................................................................497

Manage the MAC Address Table.........................................................................................................................497

Clearing the MAC Address Table.................................................................................................................. 497

Setting the Aging Time for Dynamic Entries.............................................................................................. 497

Configuring a Static MAC Address............................................................................................................... 498

Displaying the MAC Address Table...............................................................................................................498

MAC Learning Limit............................................................................................................................................... 498

Setting the MAC Learning Limit.................................................................................................................... 499

mac learning-limit Dynamic..........................................................................................................................499

mac learning-limit mac-address-sticky......................................................................................................499

mac learning-limit station-move................................................................................................................. 500

mac learning-limit no-station-move...........................................................................................................500

Learning Limit Violation Actions................................................................................................................... 500

Setting Station Move Violation Actions........................................................................................................501

Recovering from Learning Limit and Station Move Violations................................................................501

Disabling MAC Address Learning on the System.......................................................................................502

NIC Teaming........................................................................................................................................................... 502

Configure Redundant Pairs..................................................................................................................................503

Important Points about Configuring Redundant Pairs.............................................................................505

Far-End Failure Detection....................................................................................................................................506

FEFD State Changes.........................................................................................................................................507

Configuring FEFD.............................................................................................................................................508

Enabling FEFD on an Interface......................................................................................................................508

Debugging FEFD...............................................................................................................................................509

29 Link Layer Discovery Protocol (LLDP)........................................................................................................... 511

802.1AB (LLDP) Overview......................................................................................................................................511

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Protocol Data Units.......................................................................................................................................... 511

Optional TLVs.......................................................................................................................................................... 512

Management TLVs............................................................................................................................................513

TIA-1057 (LLDP-MED) Overview.........................................................................................................................514

TIA Organizationally Specific TLVs................................................................................................................515

Configure LLDP.......................................................................................................................................................518

Related Configuration Tasks.......................................................................................................................... 519

Important Points to Remember.....................................................................................................................519

LLDP Compatibility...........................................................................................................................................519

CONFIGURATION versus INTERFACE Configurations...................................................................................519

Enabling LLDP.........................................................................................................................................................520

Disabling and Undoing LLDP.........................................................................................................................520

Advertising TLVs..................................................................................................................................................... 520

Viewing the LLDP Configuration.........................................................................................................................521

Viewing Information Advertised by Adjacent LLDP Agents...........................................................................522

Configuring LLDPDU Intervals.............................................................................................................................523

Configuring Transmit and Receive Mode......................................................................................................... 523

Configuring the Time to Live Value....................................................................................................................524

Debugging LLDP.....................................................................................................................................................525

Relevant Management Objects...........................................................................................................................525

30 Microsoft Network Load Balancing...............................................................................................................531

NLB Unicast Mode Scenario.................................................................................................................................531

NLB Multicast Mode Scenario..............................................................................................................................531

Limitations of the NLB Feature............................................................................................................................532

Microsoft Clustering.............................................................................................................................................. 532

Enable and Disable VLAN Flooding ................................................................................................................... 532

Configuring a Switch for NLB .............................................................................................................................532

Enabling a Switch for Multicast NLB.............................................................................................................533

31 Multicast Source Discovery Protocol (MSDP)..............................................................................................534

Protocol Overview................................................................................................................................................. 534

Anycast RP............................................................................................................................................................... 535

Implementation Information............................................................................................................................... 536

Configure Multicast Source Discovery Protocol.............................................................................................536

Related Configuration Tasks..........................................................................................................................536

Enable MSDP...........................................................................................................................................................540

Manage the Source-Active Cache......................................................................................................................541

Viewing the Source-Active Cache................................................................................................................ 541

Limiting the Source-Active Cache................................................................................................................541

Clearing the Source-Active Cache...............................................................................................................542

Enabling the Rejected Source-Active Cache............................................................................................. 542

Accept Source-Active Messages that Fail the RFP Check.............................................................................542

Specifying Source-Active Messages.................................................................................................................. 545

Limiting the Source-Active Messages from a Peer.........................................................................................546

Preventing MSDP from Caching a Local Source.............................................................................................546

Preventing MSDP from Caching a Remote Source........................................................................................ 547

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Preventing MSDP from Advertising a Local Source........................................................................................ 547

Logging Changes in Peership States..................................................................................................................548

Terminating a Peership.........................................................................................................................................548

Clearing Peer Statistics......................................................................................................................................... 549

Debugging MSDP...................................................................................................................................................549

MSDP with Anycast RP..........................................................................................................................................550

Configuring Anycast RP.........................................................................................................................................551

Reducing Source-Active Message Flooding...............................................................................................552

Specifying the RP Address Used in SA Messages.......................................................................................552

MSDP Sample Configurations............................................................................................................................. 554

32 Multiple Spanning Tree Protocol (MSTP)..................................................................................................... 557

Protocol Overview................................................................................................................................................. 557

Spanning Tree Variations......................................................................................................................................558

Implementation Information......................................................................................................................... 558

Configure Multiple Spanning Tree Protocol.................................................................................................... 558

Related Configuration Tasks..........................................................................................................................558

Enable Multiple Spanning Tree Globally........................................................................................................... 559

Adding and Removing Interfaces........................................................................................................................559

Creating Multiple Spanning Tree Instances......................................................................................................559

Influencing MSTP Root Selection....................................................................................................................... 561

Interoperate with Non-Dell Bridges...................................................................................................................561

Changing the Region Name or Revision........................................................................................................... 561

Modifying Global Parameters.............................................................................................................................. 562

Modifying the Interface Parameters...................................................................................................................563

Configuring an EdgePort......................................................................................................................................564

Flush MAC Addresses after a Topology Change............................................................................................. 565

MSTP Sample Configurations..............................................................................................................................565

Router 1 Running-ConfigurationRouter 2 Running-ConfigurationRouter 3 Running-

ConfigurationSFTOS Example Running-Configuration........................................................................... 565

Debugging and Verifying MSTP Configurations..............................................................................................568

33 Multicast Features.............................................................................................................................................570

Enabling IP Multicast............................................................................................................................................. 570

Implementation Information............................................................................................................................... 570

Multicast Policies.................................................................................................................................................... 571

IPv4 Multicast Policies......................................................................................................................................571

34 Object Tracking.................................................................................................................................................579

Object Tracking Overview....................................................................................................................................579

Track Layer 2 Interfaces..................................................................................................................................580

Track Layer 3 Interfaces..................................................................................................................................580

Track IPv4 and IPv6 Routes............................................................................................................................581

Set Tracking Delays..........................................................................................................................................582

VRRP Object Tracking..................................................................................................................................... 582

Object Tracking Configuration........................................................................................................................... 582

Tracking a Layer 2 Interface...........................................................................................................................582

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Tracking a Layer 3 Interface...........................................................................................................................583

Track an IPv4/IPv6 Route............................................................................................................................... 585

Displaying Tracked Objects................................................................................................................................. 588

35 Open Shortest Path First (OSPFv2 and OSPFv3)......................................................................................... 590

Protocol Overview.................................................................................................................................................590

Autonomous System (AS) Areas....................................................................................................................590

Area Types..........................................................................................................................................................591

Networks and Neighbors................................................................................................................................592

Router Types..................................................................................................................................................... 592

Designated and Backup Designated Routers.............................................................................................594

Link-State Advertisements (LSAs)................................................................................................................. 594

Router Priority and Cost................................................................................................................................. 595

OSPF with Dell Networking OS...........................................................................................................................596

Graceful Restart................................................................................................................................................ 597

Fast Convergence (OSPFv2, IPv4 Only).......................................................................................................598

Multi-Process OSPFv2 with VRF................................................................................................................... 598

RFC-2328 Compliant OSPF Flooding..........................................................................................................598

OSPF ACK Packing........................................................................................................................................... 599

Setting OSPF Adjacency with Cisco Routers..............................................................................................599

Configuration Information...................................................................................................................................600

Configuration Task List for OSPFv2 (OSPF for IPv4)................................................................................ 600

Sample Configurations for OSPFv2.................................................................................................................... 613

Basic OSPFv2 Router Topology.....................................................................................................................613

OSPF Area 0 — Te 1/1 and 1/2....................................................................................................................... 613

OSPF Area 0 — Te 3/1 and 3/2...................................................................................................................... 614

OSPF Area 0 — Te 2/1 and 2/2...................................................................................................................... 614

Configuration Task List for OSPFv3 (OSPF for IPv6)....................................................................................... 614

Enabling IPv6 Unicast Routing.......................................................................................................................615

Applying cost for OSPFv3............................................................................................................................... 615

Assigning IPv6 Addresses on an Interface...................................................................................................616

Assigning Area ID on an Interface.................................................................................................................616

Assigning OSPFv3 Process ID and Router ID Globally..............................................................................616

Assigning OSPFv3 Process ID and Router ID to a VRF..............................................................................617

Configuring Stub Areas....................................................................................................................................617

Configuring Passive-Interface....................................................................................................................... 618

Redistributing Routes.......................................................................................................................................618

Configuring a Default Route.......................................................................................................................... 618

Enabling OSPFv3 Graceful Restart................................................................................................................619

OSPFv3 Authentication Using IPsec............................................................................................................. 621

Troubleshooting OSPFv3................................................................................................................................627

36 Policy-based Routing (PBR)............................................................................................................................629

Overview..................................................................................................................................................................629

Implementing PBR.................................................................................................................................................630

Configuration Task List for Policy-based Routing..........................................................................................630

PBR Exceptions (Permit)..................................................................................................................................631

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Dell PowerSwitch S4820T User guide

Dell PowerSwitch S4820T User guide

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