3com 5500 SI - Switch - Stackable User manual

3Com

®

Switch 5500 Family

Configuration Guide

Switch 5500-SI

Switch 5500-EI

Switch 5500G-EI

www.3Com.com

Part Number: 10014922 Rev. AC

Published: December 2006

3Com Corporation

350 Campus Drive

Marlborough, MA

USA 01752-3064

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3

CONTENTS

ABOUT THIS GUIDE

Organization of the Manual 21

Intended Readership 22

Conventions 22

Related Manuals 23

1 GETTING STARTED

Product Overview 25

XRN Overview 26

Major Technologies 26

Typical Networking Topology 26

Product Features 27

Logging in to the Switch 29

Setting up Configuration Environment through the Console Port 29

Setting up Configuration Environment through Telnet 31

Setting up Configuration Environment through a Dial-up Modem 33

Command Line Interface 37

Command Line View 37

Features and Functions of Command Line 40

User Interface Configuration 42

User Interface Configuration 43

Displaying and Debugging User Interface 49

2 ADDRESS MANAGEMENT CONFIGURATION

Introduction to Address Management 51

Configuring Address Management 51

Configuring a Port-Based Address Management IP Address Pool 51

Binding the MAC Address and IP Address of a Legal User to the Specified Port 51

Address Management Configuration Example 52

Port-Based Address Management IP Address Pool Configuration Example 52

Configuration Example of Binding the MAC Address and IP Address of a Legal

User 53

3 PORT OPERATION

Ethernet Port Configuration Introduction 55

Ethernet Port Configuration 55

EthernetPort Security Features 62

Displaying and Debugging Ethernet Port 66

4 CHAPTER : CONTENTS

Displaying Port Configuration Information in Brief 67

Ethernet Port Configuration Example 67

Ethernet Port Troubleshooting 68

Link Aggregation Configuration 68

Link Aggregation Configuration 71

Displaying and Debugging Link Aggregation 74

Link Aggregation Configuration Example 75

Global Broadcast Suppression Feature 76

Configuring Global Broadcast Suppression 76

Global Broadcast Suppression Configuration Example 76

Configuration procedure 76

Displaying Information About a Specified Optical Port 77

4 XRN CONFIGURATION

Introduction to XRN 79

Configuring an XRN Fabric 79

Specifying the Stacking VLAN of the Switch 80

Setting Unit IDs for Switches 80

Saving the Unit ID of Each Unit in the Fabric 81

Specifying the Fabric Port of the Switch 81

Setting Unit Names for Switches 81

Setting a Fabric Name for Switches 81

Setting an XRN Authentication Mode for Switches 82

Displaying and Debugging a Fabric 82

Fabric Configuration Example 82

RMON on XRN 83

Configuration Commands for RMON on XRN 84

Clustering on XRN 84

Peer Fabric Port Detection 84

Work Flow of the Peer Fabric Port Detection Function 84

Prompt Information and Solution 85

Multiple Fabric Port Candidates 86

5 DLDP CONFIGURATION

DLDP Overview 89

DLDP Fundamentals 90

Precautions During DLDP Configuration 93

DLDP Configuration 93

Resetting DLDP Status 94

DLDP Configuration Example 94

6 VLAN OPERATION

VLAN Configuration 97

VLAN Overview 97

Configuring a VLAN 97

Displaying and Debugging VLAN 99

VLAN Configuration Example One 99

VLAN Configuration Example Two 100

5

Protocol-Based VLAN Configuration 100

Configuring Protocol-Based VLANs 100

Displaying the Information about Protocol-Based VLANs 101

Voice VLAN Configuration 102

Displaying and Debugging of Voice VLAN 106

Voice VLAN Configuration Example 106

Creating VLANs in Batches 107

Voice VLAN Configuration 107

Configuring the Voice VLAN Function 108

Voice VLAN Displaying and Debugging 109

Voice VLAN Configuration Example 109

7 GVRP CONFIGURATION

Introduction to GVRP 111

GVRP Working Scheme 111

GVRP Packet Format 113

Protocol Specifications 113

GVRP Configuration 114

Configuration Prerequisite 114

Configuration Procedure 114

Configuration Example 115

Displaying GVRP 116

8 VLAN-VPN CONFIGURATION

VLAN-VPN Overview 117

Implementation of VLAN-VPN 117

Adjusting the TPID Values of VLAN-VPN Packet 118

VLAN-VPN Configuration 118

Configuration Prerequisites 118

Configuration procedure 118

Inner VLAN Tag Priority Replication Configuration 119

Configuration Prerequisites 119

Configuration procedure 119

TPID Adjusting Configuration 119

Configuration Prerequisites 119

Configuration Procedure 119

VLAN-VPN Configuration Example 120

Network requirements 120

Network diagram 120

Configuration Procedure 121

9 DHCP OVERVIEW

Introduction to DHCP 123

DHCP IP Address Assignment 124

IP Address Assignment Policy 124

DHCP IP Address Preferences 124

Sending Device Information through DHCP Option60 124

6 CHAPTER : CONTENTS

10 DHCP SERVER CONFIGURATION

Introduction to DHCP Server 125

Usage of DHCP Server 125

DHCP Fundamentals 125

DHCP Packet Processing Modes 127

DHCP Address Pool 127

Global Address Pool-Based DHCP Server Configuration 128

Configuration Overview 128

Enabling DHCP 128

Configuring Global Address Pool Mode on Interface(s) 129

Configuring How to Assign IP Addresses in a Global Address Pool 129

Configuring DNS Services for DHCP Clients 130

Configuring NetBIOS Services for DHCP Clients 131

Customizing DHCP Service 132

Configuring Gateway Addresses for DHCP Clients 132

Interface Address Pool-based DHCP Server Configuration 132

Configuration Overview 132

Enabling DHCP 133

Configuring to Assign the IP addresses of Local Interface-based address pools to DHCP

Clients 133

Configuring to Assign IP Addresses of Interface-based Address Pools to DHCP

Clients 133

Configuring DNS Services for DHCP Clients 135

Configuring NetBIOS Services for DHCP Clients 136

Customizing DHCP Service 137

DHCP Security Configuration 137

Prerequisites 137

Configuring Private DHCP Server Detecting 137

Configuring IP Address Detecting 137

Option 184 Supporting Configuration 138

Prerequisites 139

Configuring the Option 184 Supporting Function 139

Configuration Example 142

DHCP Server Displaying and Debugging 144

DHCP Server Configuration Example 144

Troubleshooting DHCP Server 146

11 DHCP RELAY CONFIGURATION

Introduction to DHCP Relay 147

Usage of DHCP Relay 147

DHCP Relay Fundamentals 147

DHCP Relay Configuration 148

DHCP Relay Configuration Tasks 148

Enabling DHCP 148

Configuring an Interface to Operate in DHCP Relay Mode 148

DHCP Relay Displaying 149

DHCP Relay Configuration Example 149

Troubleshooting DHCP Relay 150

7

12 VRRP CONFIGURATION

VRRP Overview 151

Virtual Router Overview 152

Introduction to Backup Group 153

VRRP Configuration 155

Configuring a Virtual Router IP address 155

Configuring Backup Group-Related Parameters 156

Displaying and Clearing VRRP Information 157

VRRP Configuration Example 157

Single-VRRP Backup Group Configuration Example 157

VRRP Tracking Interface Example 158

Multiple-VRRP Backup Group Configuration Example 160

Troubleshooting VRRP 162

13 MSTP CONFIGURATION

MSTP Overview 163

MSTP Protocol Data Unit 163

Basic MSTP Terminologies 164

Fundamentals of MSTP 166

MSTP Implementation on Switches 168

Root Bridge Configuration 168

Configuring an MST Region 169

Setting the Switch as the Root/Secondary Root Bridge 170

Setting the Bridge Priority of a Switch 171

Configuring MSTP Operation Mode 172

Configuring the Maximum Hop Count of an MST Region 172

Configuring the Diameter of a Switched Network 173

Configuring MSTP Time Parameters 173

Configuring the Timeout Time Factor 175

Configuring the Maximum Transmission Speed of a Port 175

Setting a Port as an Edge Port 176

Specifying whether a Port Connect to Point-to-Point Link 177

Enabling MSTP 179

Leaf Node Configuration 180

Prerequisites 180

Configuring an MST Region 180

Configuring MSTP Operation Mode 181

Configuring the Timeout Time Factor 181

Configuring the Maximum Transmission Speed of a Port 181

Setting a Port as an Edge Port 181

Configuring the Path Cost of a Port 181

Configuring the Priority of a Port 183

Configuring a Port to Connect to Point-to-Point Link 184

Enabling MSTP 184

mCheck Configuration 184

Prerequisites 184

Configuration Procedure 185

Configuration Example 185

Protection Functions Configuration 185

8 CHAPTER : CONTENTS

Introduction to the Protection Functions 185

Prerequisites 186

Configuring BPDU Protection 187

Configuring Root Protection 187

Configuring Loop Prevention 188

Configuring TC-BPDU Attack Prevention 188

BPDU Tunnel Configuration 188

Introduction to BPDU Tunnel 188

Configuring BPDU Tunnel 189

Displaying and Debugging MSTP 190

MSTP Configuration Example 190

BPDU Tunnel Configuration Example 192

14 CENTRALIZED MAC ADDRESS AUTHENTICATION CONFIGURATION

Introduction to Centralized MAC Address Authentication 195

Centralized MAC Address Authentication Configuration 196

Enabling Global/Port-based Centralized MAC Address Authentication 196

Configuring an ISP Domain for MAC Address Authentication Users 196

Setting Centralized MAC Address Authentication Timers 196

Displaying and Debugging Centralized MAC Address Authentication 197

Centralized MAC Address Authentication Configuration Example 197

15 SSH TERMINAL SERVICES

SSH Terminal Services 199

Introduction to SSH 199

SSH Server Configuration 201

SSH Client Configuration 205

Displaying SSH Configuration 205

SSH Server Configuration Example 206

SSH Client Configuration Example 207

SSH Keygen Program 209

SFTP Service 210

SFTP Overview 210

SFTP Server Configuration 210

SFTP Client Configuration 211

SFTP Configuration Example 213

16 IP ROUTING PROTOCOL OPERATION

IP Routing Protocol Overview 217

Selecting Routes Through the Routing Table 218

Routing Management Policy 219

Static Routes 220

Configuring Static Routes 221

Example: Typical Static Route Configuration 223

Troubleshooting Static Routes 224

RIP 224

Configuring RIP 225

Traffic Sharing Across RIP Interfaces 233

9

Displaying and Debugging RIP 233

Example: Typical RIP Configuration 233

Troubleshooting RIP 234

OSPF Configuration 235

Calculating OSPF Routes 235

Basic Concepts Related to OSPF 236

Configuring OSPF 237

Displaying and Debugging OSPF 253

254

Example: Configuring DR Election Based on OSPF Priority 254

Example: Configuring OSPF Virtual Link 256

Troubleshooting OSPF 257

IP Routing Policy 258

Configuring an IP Routing Policy 259

Forwarding Layer 3 Broadcast Packets 263

Displaying and Debugging the Routing Policy 264

Typical IP Routing Policy Configuration Example 264

Troubleshooting Routing Protocols 265

Route Capacity Configuration 265

Limiting Route Capacity 266

Route Capacity Configuration 266

Displaying and Debugging Route Capacity 267

17 NETWORK PROTOCOL OPERATION

IP Address Configuration 269

IP Address Overview 269

Configuring IP Address 271

Displaying and Debugging IP Address 272

IP Address Configuration Example 273

Troubleshooting IP Address Configuration 273

ARP Configuration 273

Configuring ARP 274

Introduction to Gratuitous ARP 275

Gratuitous ARP Packet Learning Configuration 276

Resilient ARP Configuration 277

277

Displaying and Debugging Resilient ARP Configuration 278

Resilient ARP Configuration Example 278

BOOTP Client Configuration 279

Overview of BOOTP Client 279

BOOTP Client Configuration 280

Debugging BOOTP Client 280

DHCP Configuration 280

Overview of DHCP 280

Option 82 supporting 283

DHCP Client Configuration 285

DHCP Relay Configuration 286

Enabling DHCP 286

Configuring DHCP Relay Security 287

10 CHAPTER : CONTENTS

Option 82 Supporting Configuration 288

Prerequisites 288

Enabling Option 82 Supporting on a DHCP Relay 288

Option 82 Supporting Configuration Example 289

Introduction to DHCP Snooping 290

DHCP Snooping Configuration 291

Configuration Example 292

Introduction to DHCP Accounting 292

Structure of the DHCP Accounting Packets 292

DHCP Accounting Fundamentals 294

DHCP Accounting Configuration 294

Displaying and Debugging DHCP Configuration 296

DHCP Relay Configuration Example One 297

DHCP Relay Configuration Example Two 298

Troubleshooting DHCP Relay Configuration 299

Access Management Configuration 299

Access Management Overview 299

Configuring Access Management 299

Displaying and Debugging Access Management 301

Access Management Configuration Example 302

Access Management using the Web 302

UDP Helper Configuration 303

Overview of UDP Helper 303

UDP Helper Configuration 303

Displaying and Debugging UDP Helper Configuration 305

UDP Helper Configuration Example 305

IP Performance Configuration 305

Displaying and debugging IP Performance 306

Troubleshooting IP Performance 307

18 MULTICAST PROTOCOL

IP Multicast Overview 309

Multicast Addresses 310

IP Multicast Protocols 312

Forwarding IP Multicast Packets 313

Applying Multicast 314

IGMP Snooping 314

Configuring IGMP Snooping 317

Enabling IGMP Fast Leave Processing 318

Configuring IGMP Snooping Filter ACL 319

Configuring the Maximum Number of Multicast Groups on a Port 319

Configuring Multicast VLAN 320

Displaying and Debugging IGMP Snooping 321

Configuration Example—Enable IGMP Snooping 322

IGMP Snooping Fault Diagnosis and Troubleshooting 322

Common Multicast Configuration 323

Enabling Multicast 323

Configuring the Number Limit of Multicast Routing Entries 323

Multicast MAC Address Entry Configuration 324

11

Displaying Multicast MAC Address Configuration 324

Multicast Source Deny Configuration 325

Clearing MFC Forwarding Entries or Statistics Information 325

Clearing Route Entries From The Core Multicast Routing Table 325

Displaying and Debugging Common Multicast Configuration 326

Internet Group Management Protocol (IGMP) 326

Configuring IGMP 328

Displaying and debugging IGMP 333

PIM-DM Overview 333

Configuring PIM-DM 335

Displaying and Debugging PIM-DM 338

PIM-DM Configuration Example 338

PIM-SM Overview 339

PIM-SM Operating Principle 340

Preparations before Configuring PIM-SM 341

Configuring PIM-SM 341

Displaying and Debugging PIM-SM 346

PIM-SM Configuration Example 346

349

19 ACL CONFIGURATION

Brief Introduction to ACL 351

ACL Supported by the Switch 352

Configuring ACL 352

Defining ACL 353

Activating ACL 355

Displaying and Debugging ACL 356

Advanced ACL Configuration Example 356

Basic ACL Configuration Example 357

Link ACL Configuration Example 358

QoS Configuration 359

QoS Configuration 361

Setting Port Priority 361

Configuring the Priority for Protocol Packets 361

Setting Port Mirroring 362

Configuring Traffic Mirroring 362

Setting Traffic Limit 364

Setting Line Limit 365

Relabeling Priority Level 365

Configuring Traffic Statistics 365

Configuring WRED Operation 366

Configuring Control Over Telnet 366

Displaying and Debugging QoS Configuration 369

QoS Configuration Example 369

Port Mirroring Configuration Example 370

Priority Relabeling Configuration Example 371

QoS Profile Configuration 372

Configuring QoS Profile 372

Configuring Profile Application Mode 373

12 CHAPTER : CONTENTS

Applying QoS Profile to the Port 374

QoS Profile Configuration Example 374

ACL Control Configuration 376

Configuring ACL for Telnet Users 376

Defining ACL 376

Importing ACL 377

Configuration Example 377

Configuring ACL for SNMP Users 377

Configuration Example 379

Configuring ACL Control over the HTTP Users 379

Defining ACL 379

Calling ACL to Control HTTP Users 379

Configuration Example 380

20 CONFIGURATION FOR QOS FEATURES

RSPAN Features 381

Configuration Prerequisite 382

Configuration Procedures in the Source Switch 383

Configuration Procedures in the Intermediate Switch 383

Configuration Procedures in the Source Switch 384

Configuration Example 384

Features of Traffic Statistics 386

Improving the Depth First Order of ACL Matching 386

Displaying Information of the display acl command 387

Subdividing DSCP while Defining ACL Rules 387

The Synchronization Feature of Queue Scheduling for Aggregation Ports 388

Configuring Control Over Telnet 388

Configuration Preparation 388

Controlling Telnet using Source IP 389

Controlling Telnet using Source IP and Destination IP 389

Controlling Telnet using Source MAC 390

Configuration Example 390

21 802.1X CONFIGURATION

IEEE 802.1x Overview 391

802.1x System Architecture 391

802.1x Authentication Process 392

Implementing 802.1x on the Switch 393

Configuring 802.1x 393

Enabling/Disabling 802.1x 393

Setting the Port Access Control Mode 394

Setting the Port Access Control Method 394

Checking the Users that Log on the Switch using Proxy 394

Setting the User Number on a Port 395

Setting the Authentication in DHCP Environment 395

Configuring the Authentication Method for 802.1x User 395

802.1x PEAP Configuration 395

Setting the Maximum Times of Authentication Request Message

Retransmission 397

13

Configuring Timers 398

Enabling/Disabling a Quiet-Period Timer 399

802.1x Client Version Checking Configuration 399

Enabling the 802.1x Client Version Checking Function 399

Configuring the Maximum Number of Retires to Send Version Checking Request

Packets 399

Configuring the Version Checking Timer 400

802.1x Client Version Checking Configuration Example 400

Guest VLAN Configuration 400

Guest VLAN Configuration 401

Configure Guest VLAN in Ethernet port view 401

Guest VLAN Configuration Example 401

The 802.1x Trusted MAC Address Synchronization Function 402

802.1x Supplicant System Checking 402

Displaying and Debugging 802.1x 403

Auto QoS 403

802.1x Configuration Example 403

Centralized MAC Address Authentication 405

Centralized MAC Address Authentication Configuration 406

Enabling MAC Address Authentication Both Globally and On the Port 406

Configuring Centralized MAC Address Authentication Mode 406

Configuring the User Name and Password for Fixed Mode 407

Configuring Domain Name Used by the MAC Address Authentication User 407

Configuring Centralized MAC Address Authentication Timers 407

Displaying and Debugging Centralized MAC Address Authentication 408

Auto VLAN 408

Configuration Example of Centralized MAC Address Authentication 408

AAA and RADIUS Protocol Configuration 409

RADIUS Protocol Overview 409

Implementing AAA/RADIUS on the Ethernet Switch 410

Configuring AAA 410

Creating/Deleting an ISP Domain 411

Configuring Relevant Attributes of the ISP Domain 411

AAA Separation 413

Configuring Separate AAA Schemes 414

Configuration Example for Separate AAA Schemes 414

Enabling/Disabling the Messenger Alert 415

Configuring Self-Service Server URL 416

Dynamic VLAN Assignment 417

Configuring Dynamic VLAN Assignment 417

Configuration Example for Dynamic VLAN Assignment 417

Creating a Local User 418

Setting Attributes of the Local User 419

Disconnecting a User by Force 420

Configuring the RADIUS Protocol 420

Creating/Deleting a RADIUS Scheme 421

Configuring RADIUS Authentication/

Authorization Servers 421

Configuring RADIUS Accounting Servers and the Related Attributes 422

User Re-authentication at Reboot 424

14 CHAPTER : CONTENTS

Configuring User Re-authentication at Reboot 425

Configuration Example for User Re-authentication at Reboot 425

Setting the RADIUS Packet Encryption Key 425

Tag VLAN Assignment on Trunk/Hybrid Port Supported by 802.1x

Authentication 426

Identifier Authentication Method Attribute in RADIUS 426

Setting Retransmission Times of RADIUS Request Packet 426

Setting the Supported Type of the RADIUS Server 426

Setting the RADIUS Server State 427

Setting the Username Format Transmitted to the RADIUS Server 427

Setting the Unit of Data Flow that Transmitted to the RADIUS Server 428

Configuring the Local RADIUS Authentication Server 428

Configuring Source Address for RADIUS Packets Sent by NAS 428

Setting the Timers of the RADIUS Server 429

Displaying and Debugging AAA and RADIUS Protocol 430

AAA and RADIUS Protocol Configuration Example 431

Configuring the Switch 5500 433

AAA and RADIUS Protocol Fault Diagnosis and Troubleshooting 435

Problem Diagnosis 436

3Com-User-Access-Level 436

22 FILE SYSTEM MANAGEMENT

File System Overview 437

Directory Operation 438

File Attribute Configuration 438

File Attribute Configuration 439

File Operation 440

Storage Device Operation 440

Setting the Prompt Mode of the File System 441

Configuring File Management 441

Displaying the Current-configuration and Saved-configuration of the Switch 441

Saving the Current-configuration 442

Erasing Configuration Files from Flash Memory 442

Configuring the Name of the Configuration File used for the Next Startup. 442

Configuration File Backup and Restoration 443

Configuration Preparation 443

FTP Overview 443

Enabling/Disabling FTP Server 444

Configuring Source IP Address for FTP Serve and Client 444

Configuring the FTP Server Authentication and Authorization 445

Configuring the Running Parameters of FTP Server 445

Displaying and Debugging FTP Server 446

Displaying the Source IP Address Configuration 446

Introduction to FTP Client 446

FTP Server Configuration Example 448

TFTP Overview 449

Downloading Files by means of TFTP 450

Uploading Files by means of TFTP 450

TFTP Client Configuration Example 450

15

MAC Address Table Management 451

MAC Address Table Configuration 452

Displaying MAC Address Table 454

MAC Address Table Management Display Example 454

MAC Address Table Management Configuration Example 455

Device Management 456

Device Management Configuration 456

Device Management Configuration Example 457

System Maintenance and Debugging 459

Setting the Daylight Saving Time 459

459

Telneting with Specified Source IP Address/Source Interface IP Address 459

460

Basic System Configuration 460

Terminating the FTP Connection of a Specified User 461

Restarting the Switch 461

Displaying the State and Information of the System 461

System Debugging 462

Testing Tools for Network Connection 464

ping 464

tracert 464

Introduction to Remote-ping 465

Remote-ping Configuration 466

Introduction to Remote-ping Configuration 466

Configuring Remote-ping 466

Configuration Example 467

Logging Function 468

Introduction to Info-center 468

Info-Center Configuration 471

Sending the Information to Loghost 474

Sending the Information to Control Terminal 476

Sending the Information to Telnet Terminal or Dumb Terminal 478

Sending the Information to the Log Buffer 480

Sending the Information to the Trap Buffer 481

Sending the Information to SNMP Network Management 482

Configuring Synchronous Information Output Function 485

Configuration Examples of Sending Log to Unix Loghost 485

Configuration Examples for Sending Log to Linux Loghost 486

Configuration Examples of Sending Log to Control Terminal 488

RMON Configuration 489

Configuring RMON 489

Displaying and Debugging RMON 491

RMON Configuration Example 492

NTP Overview 492

NTP Configuration 494

Configuring NTP Operating Mode 494

Displaying and Debugging NTP 499

Typical NTP Configuration Examples 499

Configure NTP Server 499

NTP peer Configuration 501

16 CHAPTER : CONTENTS

Configure NTP Broadcast Mode 502

Configure NTP Multicast Mode 504

Configure Authentication-enabled NTP Server Mode 505

SSH Terminal Services 506

Configuring SSH Server 507

Setting System Protocol 507

Configuring SSH Client 510

SSH Configuration Example 515

File System Configuration 516

Introduction to File System 516

File System Configuration 517

FTP Lighting Configuration 518

Introduction to FTP 518

FTP Lighting Procedure 518

TFTP Lighting Configuration 520

TFTP Lighting Procedure 521

23 PORT TRACKING CONFIGURATION

Introduction to the Port Tracking Function 523

Port Tracking Configuration 523

Configuring the Port Tracking Function 523

Port Tracking Configuration Example 523

24 DYNAMICALLY APPLY ACL BY RADIUS SERVER CONFIGURATION

Introduction to Dynamically Apply ACL by RADIUS Server 525

Introduction to Dynamically Apply ACL by RADIUS Server Configurations 525

Configuration Example 526

Network requirements 526

Network diagram 526

Configuration procedure 527

Configuration on the switch 529

25 AUTO DETECT CONFIGURATION

Introduction to the Auto Detect Function 531

Configuring the auto detect function 531

Auto Detect Configuration Example 531

Auto Detect Implementation 532

Auto Detect Implementation in Static Routing 533

Configuring the Auto Detect Function for a Static Route 533

Configuration Example 533

Auto Detect Implementation in VRRP 534

Configuring the Auto Detect Function for VRRP 534

Configuration Example 534

Auto Detect Implementation in VLAN Interface Backup 536

Configuring the Auto Detect Function for VLAN Interface Backup 536

Configuration Example 536

17

26 RSTP CONFIGURATION

STP Overview 539

Implement STP 539

Configuration BPDU Forwarding Mechanism in STP 543

Implement RSTP on the Switch 543

RSTP Configuration 544

Enable/Disable RSTP on a Switch 547

Enable/Disable RSTP on a Port 547

Configure RSTP Operating Mode 548

Configure the STP-Ignore attribute of VLANs on a Switch 548

Set Priority of a Specified Bridge 549

Specify the Switch as Primary or Secondary Root Bridge 549

Set Forward Delay of a Specified Bridge 550

Set Hello Time of the Specified Bridge 550

Set Max Age of the Specified Bridge 550

Set Timeout Factor of the Bridge 551

Specifying the Maximum Transmission Rate of STP Packets on a Port 551

Set Specified Port to be an EdgePort 552

Specifying the Path Cost on a Port 552

Set the Priority of a Specified Port 553

Configure a Specified Port to be Connected to Point-to-Point Link 553

Set mCheck of the Specified Port 554

Configure the Switch Security Function 554

Display and Debug RSTP 556

RSTP Configuration Example 556

27 POE PROFILE CONFIGURATION

Introduction to PoE Profile 559

PoE Profile Configuration 559

PoE Profile Configuration Tasks 559

PoE Profile Configuration Example 560

28 SNMP CONFIGURATION

SNMP Configuration Introduction 563

SNMP Versions and Supported MIB 563

Configure SNMP 565

Enabling/Disabling SNMP Agent to Send Trap 566

Setting the Destination Address of Trap 566

Setting Lifetime of Trap Message 567

Setting SNMP System Information 567

Setting the Engine ID of a Local or Remote Device 567

Setting/Deleting an SNMP Group 567

Setting the Source Address of Trap 568

Adding/Deleting a User to/from an SNMP Group 568

Creating/Updating View Information or Deleting a View 568

Setting the Size of SNMP Packet Sent/Received by an Agent 568

Enabling/Disabling a Port Transmitting Trap Information SNMP Agent 569

Disabling SNMP Agent 569

18 CHAPTER : CONTENTS

Network Management Operation Logging Configuration 569

Displaying and Debugging SNMP 570

SNMP Configuration Example 570

Reading Usmusr Table Configuration Example 571

29 SOURCE IP ADDRESS CONFIGURATION

Configuring Source IP Address for Service Packets 573

Displaying the Source IP Address Configuration 574

30 PASSWORD CONTROL CONFIGURATION OPERATIONS

Introduction to Password Control Configuration 575

Password Control Configuration 576

Configuration Prerequisites 576

Configuration Tasks 576

Configuring Password Aging 577

Configuring the Limitation of Minimum Password Length 578

Configuring History Password Recording 579

Configuring a User Login Password in Encryption Mode 580

Configuring Login Attempts Limitation and Failure Processing Mode 580

Configuring the Timeout Time for Users to be authenticated 581

Displaying Password Control 581

Password Control Configuration Example 582

31 MSDP CONFIGURATION

Introduction to MSDP 585

MSDP Working Mechanism 587

Configuring MSDP Basic Functions 590

Configuration Prerequisites 590

Configuring MSDP Basic Functions 591

Configuring Connection Between MSDP Peers 591

Configuration Prerequisites 591

Configuring Description Information for MSDP Peers 592

Configuring Anycast RP Application 592

Configuring an MSDP Mesh Group 592

Configuring MSDP Peer Connection Control 593

Configuring SA Message Transmission 593

Configuration Prerequisites 593

Configuring the Transmission and Filtering of SA Request Messages 594

Configuring a Rule for Filtering the Multicast Sources of SA Messages 594

Configuring a Rule for Filtering Received and Forwarded SA Messages 595

Configuring SA Message Cache 595

Displaying and Debugging MSDP Configuration 596

MSDP Configuration Example 596

Configuration Example of Anycast RP Application 596

Troubleshooting MSDP Configuration 599

MSDP Peer Always in the Down State 599

No SA Entry in the SA Cache of the Router 599

19

32 CLUSTERING

Clustering Overview 601

Switch Roles 602

Introduction to NDP 603

Introduction to NTDP 603

Introduction to Cluster Roles 604

Management Device Configuration 605

Enabling System and Port NDP 605

Configuring NDP Parameters 605

Enabling System and Port NTDP 605

Configuring NTDP Parameters 605

Configuring Cluster Parameters 606

Configuring Internal-External Interaction 607

NM Interface for Cluster Management Configuration 607

Member Device Configuration 608

Enabling System and Port NDP 608

Enabling System and Port NTDP 608

Specifying the cluster FTP/TFTP server 608

Configuring Cluster Parameters 609

Displaying and Maintaining Cluster Configurations 609

Clustering Configuration Example 610

NM Interface for Cluster Management Configuration Example 612

33 HWTACACS CONFIGURATION

Configuring HWTACACS 615

HWTACACS configuration tasks 615

Creating a HWTACAS Scheme 616

Configuring HWTACACS Authentication Servers 617

Configuring HWTACACS Accounting Servers and the Related Attributes 617

Configuring Source Address for HWTACACS Packets Sent by NAS 618

Setting a Key for Securing the Communication with TACACS Server 618

Setting the Username Format Acceptable to the TACACS Server 618

Setting the Unit of Data Flows Destined for the TACACS Server 619

Setting Timers Regarding TACACS Server 619

Displaying and Debugging HWTACACS Protocol 620

HWTACACS Protocol Configuration Example 621

Configuring the FTP/Telnet User Authentication at a Remote TACACS Server 621

A PASSWORD RECOVERY PROCESS

Introduction 623

CLI Commands Controlling Bootrom Access 623

Bootrom Interface 624

Displaying all Files in Flash 624

Skipping the Current Configuration File 625

Bootrom Passwords 625

Bootrom Password Recovery 626

20 CHAPTER : CONTENTS

B RADIUS SERVER AND RADIUS CLIENT SETUP

Setting Up A RADIUS Server 627

Configuring Microsoft IAS RADIUS 627

Configuring Funk RADIUS 652

Configuring FreeRADIUS 656

Setting Up the RADIUS Client 658

Windows 2000 built-in client 658

Windows XP built-in client 658

Aegis Client Installation 659

C AUTHENTICATING THE SWITCH 5500 WITH CISCO SECURE ACS

Cisco Secure ACS (TACACS+) and the 3Com Switch 5500 661

Setting Up the Cisco Secure ACS (TACACS+) server 661

Adding a 3Com Switch 5500 as a RADIUS client 662

Adding a User for Network Login 664

Adding a User for Switch Login 665

D 3COM XRN

What is XRN? 672

Supported Switches 672

XRN Terminology 672

Benefits of XRN 673

XRN Features 673

Distributed Device Management (DDM) 673

Distributed Resilient Routing (DRR) 673

Distributed Link Aggregation (DLA) 674

How to Implement XRN—Overview 676

Important Considerations and Recommendations 676

Recommendations for Achieving Maximum Resilience 677

Unit ID Numbering Mechanism 678

678

Network Example using XRN 678

XRN Distributed Fabric Network 678

Recovering your XRN Network 680

Unit Failure 680

Interconnect Failure 680

How XRN Interacts with other 3Com Switches 680

How XRN Interacts with other Features 681

VLANs 681

Legacy Aggregated Links 682

STP/RSTP 683

Resilient Links 683

How a Failure affects the Distributed Fabric 684

Loss of a Switch within the XRN Distributed Fabric 684

Loss of the Fabric Interconnect 685

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