Dell 3448P, 3448, 3424P, 34XX User Manual

Dell™ PowerConnect™ 34XX Systems

User’s Guide

Notes, Notices, and Cautions

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

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

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

____________________

Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.

Trademarks used in this text: Dell, Dell OpenManage, the DELL logo, and PowerConnect are trademarks of Dell Inc. Microsoft and Windows are registered trademarks of Microsoft Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

May 2005 Rev A01

Contents

1 Introduction

System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

PowerConnect 3424 PowerConnect 3424P PowerConnect 3448 PowerConnect 3448P

. . . . . . . . . . . . . . . . . . . . . . . . . . 21

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. . . . . . . . . . . . . . . . . . . . . . . . . . 22

. . . . . . . . . . . . . . . . . . . . . . . . . 22

Stacking Overview

Understanding the Stack Topology Stacking Failover Topology Stacking Members and Unit ID Removing and Replacing Stacking Members Exchanging Stacking Members

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

. . . . . . . . . . . . . . . . . . . 23

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. . . . . . . . . . . . . . . . . . . . 25

Switching from the Stack Master to the Backup Stack Master

Features Overview

Power over Ethernet Head of Line Blocking Flow Control Support (IEEE 802.3X) Back Pressure Support Virtual Cable Testing (VCT) MDI/MDIX Support Auto Negotiation MAC Address Supported Features Layer 2 Features VLAN Supported Features Spanning Tree Protocol Features Link Aggregation Quality of Service Features Device Management Features Security Features

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

. . . . . . . . . . . . . . . . . . . . . . . . . 28

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. . . . . . 27

Additional CLI Documentation

. . . . . . . . . . . . . . . . . . . . . . . 36

Contents 3

2 Hardware Description

Port Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

PowerConnect 3424 Port Description PowerConnect 3448 Port Description SFP Ports RS-232 Console Port

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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. . . . . . . . . . . . . . . . . . 37

. . . . . . . . . . . . . . . . . . 38

Physical Dimensions

LED Definitions

Gigabit Port LEDs System LEDs Power Supplies Stack ID Button Reset Button Ventilation System

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

. . . . . . . . . . . . . . . . . . . . . . . . . . . 43

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3 Installing the PowerConnect 3424/P and

PowerConnect 3448/P

Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Unpacking

Mounting the Device

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Package Contents Unpacking the Device

Installing in a Rack Installing on a Flat Surface Installing the Device on a Wall Connecting to a Terminal

. . . . . . . . . . . . . . . . . . . . . . . . . . . 49

. . . . . . . . . . . . . . . . . . . . . . . . . 50

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. . . . . . . . . . . . . . . . . . . . . 52

. . . . . . . . . . . . . . . . . . . . . . . 53

4 Contents

Connecting a Device to a Power Supply

Installing a Stack

Overview

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Stacking PowerConnect 3400 Series Switches Unit ID Selection Process

Starting and Configuring the Device

Connecting to the Device

. . . . . . . . . . . . . . . . . . . . . . . 56

. . . . . . . . . . . . . . . . . . . . 57

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. . . . . . . . . . . . . . . . . . 54

. . . . . . . . . . . . . 54

4 Configuring PowerConnect 3424/P and 3448/P

Configuration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . 59

Booting the Switch Initial Configuration

. . . . . . . . . . . . . . . . . . . . . . . . . . 60

. . . . . . . . . . . . . . . . . . . . . . . . . . 61

Advanced Configuration

Retrieving an IP Address From a DHCP Server Receiving an IP Address From a BOOTP Server Security Management and Password Configuration

Startup Procedures

Startup Menu Procedures Software Download Through TFTP Server

Port Default Settings

Auto-Negotiation MDI/MDIX

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Flow Control Back Pressure Switching Port Default Settings

. . . . . . . . . . . . . . . . . . . . . . . . . . 65

. . . . . . . . . . . . . 65

. . . . . . . . . . . . . 66

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

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. . . . . . . . . . . . . . . 73

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

. . . . . . . . . . . . . . . . . . . . . . . . . . . 76

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

. . . . . . . . . . . . . . . . . . . . 77

5 Using Dell OpenManage Switch Administrator

Starting the Application . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Understanding the Interface

Device Representation

Using the Switch Administrator Buttons

Information Buttons Device Management Buttons

. . . . . . . . . . . . . . . . . . . . . . . . 79

. . . . . . . . . . . . . . . . . . . . . . . . 81

. . . . . . . . . . . . . . . . . . 82

. . . . . . . . . . . . . . . . . . . . . . . . . . 82

. . . . . . . . . . . . . . . . . . . . . 82

Field Definitions

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Accessing the Device Through the CLI

Terminal Connection Telnet Connection

Using the CLI

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Command Mode Overview User EXEC Mode Privileged EXEC Mode Global Configuration Mode

. . . . . . . . . . . . . . . . . . . . . . . . . 83

. . . . . . . . . . . . . . . . . . . . . . . . . . . 84

. . . . . . . . . . . . . . . . . . . . . . . 84

. . . . . . . . . . . . . . . . . . . . . . . . . . . 85

. . . . . . . . . . . . . . . . . . . . . . . . . 85

. . . . . . . . . . . . . . . . . . . . . . 86

. . . . . . . . . . . . . . . . . . . 83

Contents 5

6 Configuring System Information

Defining General Switch Information . . . . . . . . . . . . . . . . . . . . 88

Viewing Switch Asset Information Defining System Time Settings Viewing System Health Information Managing Power over Ethernet Viewing Version Information Managing Stack Members Resetting the Device

. . . . . . . . . . . . . . . . . . . . . . . . 109

. . . . . . . . . . . . . . . . . . . 88

. . . . . . . . . . . . . . . . . . . . . 93

. . . . . . . . . . . . . . . . . . 98

. . . . . . . . . . . . . . . . . . . 101

. . . . . . . . . . . . . . . . . . . . . 106

. . . . . . . . . . . . . . . . . . . . . . 107

Configuring SNTP Settings

. . . . . . . . . . . . . . . . . . . . . . . . 110

Defining SNTP Global Parameters Defining SNTP Authentication Methods Defining SNTP Servers Defining SNTP Interfaces

Managing Logs

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

. . . . . . . . . . . . . . . . . . . . . . . 116

. . . . . . . . . . . . . . . . . . . . . . 120

Defining Global Log Parameters Viewing the RAM Log Table Viewing the Log File Table

. . . . . . . . . . . . . . . . . . . . . 126

. . . . . . . . . . . . . . . . . . . . . . 128

Viewing the Device Login History Modifying Remote Log Server Definitions

Defining IP Addressing

Defining Default Gateways Defining IP Interfaces

. . . . . . . . . . . . . . . . . . . . . . . . . . 135

. . . . . . . . . . . . . . . . . . . . . . 135

. . . . . . . . . . . . . . . . . . . . . . . . 137

Defining DHCP IP Interface Parameters Configuring Domain Name Systems Defining Default Domains Mapping Domain Host Defining ARP Settings

Running Cable Diagnostics

. . . . . . . . . . . . . . . . . . . . . . 145

. . . . . . . . . . . . . . . . . . . . . . . . 146

. . . . . . . . . . . . . . . . . . . . . . . . 149

. . . . . . . . . . . . . . . . . . . . . . . . 152

Viewing Copper Cable Diagnostics Viewing Optical Transceiver Diagnostics

. . . . . . . . . . . . . . . . . . 112

. . . . . . . . . . . . . . . 114

. . . . . . . . . . . . . . . . . . . 122

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. . . . . . . . . . . . . . . 132

. . . . . . . . . . . . . . . 140

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. . . . . . . . . . . . . . . . . . 152

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6 Contents

Managing Switch Security

Defining Access Profiles Defining Authentication Profiles Selecting Authentication Profiles Managing Passwords Defining the Local User Databases

. . . . . . . . . . . . . . . . . . . . . . . . 156

. . . . . . . . . . . . . . . . . . . . . . 156

. . . . . . . . . . . . . . . . . . . 163

. . . . . . . . . . . . . . . . . . 166

. . . . . . . . . . . . . . . . . . . . . . . . 170

. . . . . . . . . . . . . . . . . . 173

Defining Line Passwords . . . . . . . . . . . . . . . . . . . . . . 177

Defining Enable Passwords Defining TACACS+ Settings Configuring RADIUS Settings

. . . . . . . . . . . . . . . . . . . . . 179

. . . . . . . . . . . . . . . . . . . . . 180

. . . . . . . . . . . . . . . . . . . . 184

Defining SNMP Parameters

Defining SNMP Global Parameters Defining SNMP View Settings Defining SNMP Access Control Assigning SNMP User Security Defining SNMP Communities Defining SNMP Notification Filters Defining SNMP Notification Recipients

Managing Files

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Management File Overview Downloading Files Uploading Files Activating Image Files Copying Files

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Managing Device Files

Configuring General Settings

. . . . . . . . . . . . . . . . . . . . . . . 189

. . . . . . . . . . . . . . . . . . 190

. . . . . . . . . . . . . . . . . . . . 193

. . . . . . . . . . . . . . . . . . . 196

. . . . . . . . . . . . . . . . . . . 199

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. . . . . . . . . . . . . . . . . . . . . 212

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. . . . . . . . . . . . . . . . . . . . . . . . . . . 215

. . . . . . . . . . . . . . . . . . . . . . . . 218

. . . . . . . . . . . . . . . . . . . . . . . 221

. . . . . . . . . . . . . . . . . . . . . . . 223

7 Configuring Switch Information

Configuring Network Security . . . . . . . . . . . . . . . . . . . . . . 225

Port Based Authentication

. . . . . . . . . . . . . . . . . . . . . . 225

Configuring Port Based Authentication

. . . . . . . . . . . . . . . . . . 227

Configuring Advanced Port Based Authentication Authenticating Users Configuring Port Security Defining MAC Based ACLs Configuring ACL Binding

Configuring Ports

Defining Port Configuration Defining LAG Parameters Enabling Storm Control Defining Port Mirroring Sessions

. . . . . . . . . . . . . . . . . . . . . . . . 235

. . . . . . . . . . . . . . . . . . . . . . 237

. . . . . . . . . . . . . . . . . . . . . . 241

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. . . . . . . . . . . 231

Contents 7

Configuring Address Tables . . . . . . . . . . . . . . . . . . . . . . . 263

Defining Static Addresses Viewing Dynamic Addresses

. . . . . . . . . . . . . . . . . . . . . . 263

. . . . . . . . . . . . . . . . . . . . . 267

Configuring GARP

Defining GARP Timers

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

. . . . . . . . . . . . . . . . . . . . . . . . 270

Configuring the Spanning Tree Protocol

Defining STP Global Settings Defining STP Port Settings Defining STP LAG Settings Defining Rapid Spanning Tree

. . . . . . . . . . . . . . . . . . . . . 274

. . . . . . . . . . . . . . . . . . . . . . 280

. . . . . . . . . . . . . . . . . . . . . . 284

. . . . . . . . . . . . . . . . . . . . 288

Configuring Multiple Spanning Tree Defining MSTP Interface Settings

Configuring VLANs

Defining VLAN Membership Defining VLAN Ports Settings Defining VLAN LAGs Settings

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 299

. . . . . . . . . . . . . . . . . . . . . 300

. . . . . . . . . . . . . . . . . . . . 305

. . . . . . . . . . . . . . . . . . . . 307

Binding MAC Address to VLANs Configuring GVRP Parameters Configuring Private VLANs

Aggregating Ports

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 319

Defining LACP Parameters Defining LACP Parameters Defining LAG Membership

Multicast Forwarding Support

. . . . . . . . . . . . . . . . . . . . 312

. . . . . . . . . . . . . . . . . . . . . . 315

. . . . . . . . . . . . . . . . . . . . . . 319

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. . . . . . . . . . . . . . . . . . . . . . 322

. . . . . . . . . . . . . . . . . . . . . . 324

Defining Multicast Global Parameters Adding Bridge Multicast Address Members Assigning Multicast Forward All Parameters IGMP Snooping

. . . . . . . . . . . . . . . . . . . . . . . . . . . 334

. . . . . . . . . . . . . . . . . 273

. . . . . . . . . . . . . . . . . 291

. . . . . . . . . . . . . . . . . . 295

. . . . . . . . . . . . . . . . . . . 310

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8 Viewing Statistics

8 Contents

Viewing Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337

Viewing Utilization Summary Viewing Counter Summary Viewing Interface Statistics Viewing Etherlike Statistics Viewing GVRP Statistics

. . . . . . . . . . . . . . . . . . . . . 337

. . . . . . . . . . . . . . . . . . . . . . 338

. . . . . . . . . . . . . . . . . . . . . 340

. . . . . . . . . . . . . . . . . . . . . 343

. . . . . . . . . . . . . . . . . . . . . . . 345

Viewing EAP Statistics . . . . . . . . . . . . . . . . . . . . . . . 349

Viewing EAP Statistics Using the CLI Commands

. . . . . . . . . . . 350

Viewing RMON Statistics

Viewing RMON Statistics Group Viewing RMON History Control Statistics Viewing the RMON History Table Defining Device RMON Events Viewing the RMON Events Log Defining RMON Device Alarms

Viewing Charts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367

Viewing Port Statistics Viewing LAG Statistics Viewing the CPU Utilization

. . . . . . . . . . . . . . . . . . . . . . . . 352

. . . . . . . . . . . . . . . . . . . 352

. . . . . . . . . . . . . . . 354

. . . . . . . . . . . . . . . . . . . 356

. . . . . . . . . . . . . . . . . . . . 360

. . . . . . . . . . . . . . . . . . . . 362

. . . . . . . . . . . . . . . . . . . . 363

. . . . . . . . . . . . . . . . . . . . . . . 367

. . . . . . . . . . . . . . . . . . . . . . . 369

. . . . . . . . . . . . . . . . . . . . . 371

9 Configuring Quality of Service

Quality of Service (QoS) Overview . . . . . . . . . . . . . . . . . . . . 373

CoS Services

Defining QoS Global Parameters

Configuring QoS Global Settings Defining QoS Interface Settings Mapping CoS Values to Queues Mapping DSCP Values to Queues

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 374

. . . . . . . . . . . . . . . . . . . . . 375

. . . . . . . . . . . . . . . . . . . 375

. . . . . . . . . . . . . . . . . . . 377

. . . . . . . . . . . . . . . . . . . 379

. . . . . . . . . . . . . . . . . . 380

A Device Feature Interaction Information

Glossary

Index

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399

Contents 9

Figures

Figure 1-1. PowerConnect 3424 and PowerConnect 3424P . . . 21

Figure 1-2. PowerConnect 3448 and PowerConnect 3448P

Figure 1-3. Stacking Ring Topology

. . . . . . . . . . . . . . 23

Figure 1-4. PowerConnect 3448/P replaces

PowerConnect 3448/P

. . . . . . . . . . . . . . . 26

Figure 1-5. PowerConect 3424/P port replaces

PowerConnect 3448/P port

. . . . . . . . . . . . 26

Figure 1-6. PowerConnect 3448/P port replaces

PowerConect 3424/P Port

Figure 2-1. PowerConnect 3424 Front Panel

Figure 2-2. PowerConnect 3424 Back Panel

Figure 2-3. PowerConnect 3448 Front Panel

Figure 2-4. PowerConnect 3448 Back Panel

Figure 2-5. Console Port

. . . . . . . . . . . . . . . . . . . 39

Figure 2-6. RJ-45 Copper Based 10/100 BaseT LEDs

Figure 2-7. RJ-45 1000 BaseT LED

Figure 2-8. SFP Port LEDs

Figure 2-9. System LEDs

. . . . . . . . . . . . . . . . . . . 43

. . . . . . . . . . . . . . . . . . . 44

. . . . . . . . . . . . . 27

. . . . . . . . . . 37

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. . . . . . 40

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. . . 22

10 Contents

Figure 2-10. Stacking LEDs

Figure 2-11. Power Connection

Figure 3-1. Bracket Installation for Rack Mounting

Figure 3-2. Bracket Installation for Mounting on a Wall

Figure 3-3. Mounting a Device on a Wall

Figure 3-4. Back-Panel Power Connector

Figure 3-5. Stacking Cable Diagram

. . . . . . . . . . . . . . . . . . 45

. . . . . . . . . . . . . . . . 46

. . . . . . . 51

. . . . . 52

. . . . . . . . . . . 53

. . . . . . . . . . . 54

. . . . . . . . . . . . . . 55

Figure 3-6. Stacking Configuration and Identification Panel

Figure 3-7. Connecting to PowerConnect 3400 Series

Console Port

. . . . . . . . . . . . . . . . . . . 58

. . . 56

Figure 4-1. Installation and Configuration Flow . . . . . . . . . 60

Figure 5-1. Switch Administrator Components

. . . . . . . . . 80

Figure 5-2. PowerConnect Device Port Indicators

Figure 6-1. System

Figure 6-2. Asset

Figure 6-3. Time Synchronization

Figure 6-4. System Health

Figure 6-5. Power Over Ethernet

Figure 6-6. Versions

Figure 6-7. Stack Management

Figure 6-8. SNTP Global Settings

Figure 6-9. SNTP Authentication

Figure 6-10. Add Authentication Key

Figure 6-11. Authentication Key Table

Figure 6-12. SNTP Servers

Figure 6-13. Add SNTP Server

Figure 6-14. SNTP Servers Table

. . . . . . . . . . . . . . . . . . . . . . 87

. . . . . . . . . . . . . . . . . . . . . . . 88

. . . . . . . . . . . . . . . 95

. . . . . . . . . . . . . . . . . . 99

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. . . . . . . . . . . . . . . . . . . . 106

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. . . . . . . . . . . . 115

. . . . . . . . . . . . . . . . . . 117

. . . . . . . . . . . . . . . . 118

. . . . . . . . . . . . . . . 118

. . . . . . . 81

Figure 6-15. SNTP Interface Settings

Figure 6-16. Add SNTP Interface

Figure 6-17. Global Log Parameters

Figure 6-18. RAM Log Table

Figure 6-19. Log File Table

Figure 6-20. Login History

. . . . . . . . . . . . . . . . . 126

. . . . . . . . . . . . . . . . . . 128

. . . . . . . . . . . . . . . . . . 130

. . . . . . . . . . . . . 120

. . . . . . . . . . . . . . . 121

. . . . . . . . . . . . . 123

Figure 6-21. Remote Log Server Settings

Figure 6-22. Add a Log Server

Figure 6-23. Log Servers Table

. . . . . . . . . . . . . . . . 133

. . . . . . . . . . . . . . . . 134

Figure 6-24. IP Interfaces Parameters

Figure 6-25. Add a Static IP Interface

. . . . . . . . . . . 132

. . . . . . . . . . . . 137

. . . . . . . . . . . . 138

Contents 11

Figure 6-26. IP Interface Parameter Table . . . . . . . . . . 138

Figure 6-27. DHCP IP Interface

. . . . . . . . . . . . . . . . 140

Figure 6-28. Domain Naming System (DNS)

Figure 6-29. Add DNS Server

Figure 6-30. DNS Server Table

Figure 6-31. Default Domain Name

Figure 6-32. Host Name Mapping

Figure 6-33. Add Host Name Mapping

. . . . . . . . . . . . . . . . 143

. . . . . . . . . . . . . . 145

. . . . . . . . . . . . . . 146

. . . . . . . . . . . . 147

Figure 6-34. Hosts Name Mapping Table

Figure 6-35. ARP Settings

Figure 6-36. Copper Cables

Figure 6-37. Optical Transceiver

Figure 6-38. Access Profiles

Figure 6-39. Add an Access Profile

Figure 6-40. Add an Access Profile Rule

Figure 6-41. Profile Rules Table

Figure 6-42. Authentication Profiles

. . . . . . . . . . . . . . . . . . 149

. . . . . . . . . . . . . . . . . 152

. . . . . . . . . . . . . . . 154

. . . . . . . . . . . . . . . . . 157

. . . . . . . . . . . . . . 158

. . . . . . . . . . . 159

. . . . . . . . . . . . . . . 160

. . . . . . . . . . . . . 163

. . . . . . . . . . 142

. . . . . . . . . . . 148

12 Contents

Figure 6-43. Add Authentication Profile

Figure 6-44. Select Authentication

. . . . . . . . . . . . . . 167

Figure 6-45. Password Management

Figure 6-46. Local User Database

Figure 6-47. Add a User

. . . . . . . . . . . . . . . . . . . 175

Figure 6-48. Local User Table

Figure 6-49. Line Password

Figure 6-50. Enable Password

Figure 6-51. TACACS+ Settings

Figure 6-52. Add TACACS+ Host

Figure 6-53. TACACS+ Table

. . . . . . . . . . . . . . 173

. . . . . . . . . . . . . . . . 175

. . . . . . . . . . . . . . . . . 177

. . . . . . . . . . . . . . . . 179

. . . . . . . . . . . . . . . 181

. . . . . . . . . . . . . . . 182

. . . . . . . . . . . . . . . . . 183

. . . . . . . . . . . . 165

. . . . . . . . . . . . . 171

Figure 6-54. RADIUS Settings . . . . . . . . . . . . . . . . 185

Figure 6-55. Add RADIUS Server

Figure 6-56. RADIUS Servers List

Figure 6-57. SNMP Global Parameters

Figure 6-58. SNMPv3 View Settings

Figure 6-59. Add A View

Figure 6-60. View Table

. . . . . . . . . . . . . . . . . . . 194

Figure 6-61. Access Control Group

Figure 6-62. Add an Access Control Group

Figure 6-63. Access Table

. . . . . . . . . . . . . . . 186

. . . . . . . . . . . . . . . 187

. . . . . . . . . . . . 190

. . . . . . . . . . . . . 193

. . . . . . . . . . . . . . . . . . . 194

. . . . . . . . . . . . . . 196

. . . . . . . . . . 197

. . . . . . . . . . . . . . . . . . 197

Figure 6-64. SNMPv3 User Security Model (USM)

Figure 6-65. Add SNMPv3 User Name

Figure 6-66. User Security Model Table

Figure 6-67. SNMPv1,2 Community

Figure 6-68. Add SNMP Community

Figure 6-69. Notification Filter

Figure 6-70. Add Filter

. . . . . . . . . . . . . . . . . . . . 206

. . . . . . . . . . . . 200

. . . . . . . . . . . 201

. . . . . . . . . . . . . . 202

. . . . . . . . . . . . . 203

. . . . . . . . . . . . . . . . 205

. . . . . . . 199

Figure 6-71. Filter Table

Figure 6-72. Notification Recipients

. . . . . . . . . . . . . . . . . . . 206

. . . . . . . . . . . . . 208

Figure 6-73. Add Notification Recipients

Figure 6-74. Notification Recipients Tables

Figure 6-75. File Download from Server

Figure 6-76. File Upload to Server

Figure 6-77. Active Images

Figure 6-78. Copy Files

. . . . . . . . . . . . . . . . . 218

. . . . . . . . . . . . . . . . . . . . 219

Figure 6-79. Files on File System

Figure 6-80. General Settings

. . . . . . . . . . . . . . . . 223

Figure 7-1. Port Based Authentication

. . . . . . . . . . . . 213

. . . . . . . . . . . . . . 216

. . . . . . . . . . . . . . . 221

. . . . . . . . . . . . 227

. . . . . . . . . . . 210

. . . . . . . . . . 210

Contents 13

Figure 7-2. Port Based Authentication Table . . . . . . . . . 229

Figure 7-3. Multiple Hosts

Figure 7-4. Multiple Hosts Table

Figure 7-5. Authenticated Users

. . . . . . . . . . . . . . . . . 231

. . . . . . . . . . . . . . 233

. . . . . . . . . . . . . . 235

Figure 7-6. Authenticated Users Table

Figure 7-7. Port Security

Figure 7-8. Port Security Table

Figure 7-9. MAC Based ACL

Figure 7-10. Add MAC Based ACLs

Figure 7-11. ACL Bindings

Figure 7-12. Port Configuration

Figure 7-13. Port Configuration Table

Figure 7-14. LAG Configuration

Figure 7-15. LAG Configuration Table

Figure 7-16. Storm Control

. . . . . . . . . . . . . . . . . . 238

. . . . . . . . . . . . . . . 239

. . . . . . . . . . . . . . . . 241

. . . . . . . . . . . . . . 242

. . . . . . . . . . . . . . . . . . 244

. . . . . . . . . . . . . . . . 247

. . . . . . . . . . . . . 249

. . . . . . . . . . . . . . . . 252

. . . . . . . . . . . . . 254

. . . . . . . . . . . . . . . . . . 257

Figure 7-17. Storm Control Settings Table

Figure 7-18. Port Mirroring

. . . . . . . . . . . . . . . . . . 261

. . . . . . . . . . . 236

. . . . . . . . . . . 258

14 Contents

Figure 7-19. Static MAC Address Table

Figure 7-20. Dynamic MAC Address

Figure 7-21. GARP Timers

. . . . . . . . . . . . . . . . . . 270

Figure 7-22. Spanning Tree Global Settings

Figure 7-23. Spanning Tree Port Settings

Figure 7-24. Spanning Tree LAG Settings

. . . . . . . . . . . . 264

. . . . . . . . . . . . . 267

. . . . . . . . . . 274

. . . . . . . . . . . 280

. . . . . . . . . . . 284

Figure 7-25. Rapid Spanning Tree (RSTP) settings

Figure 7-26. MSTP Settings

Figure 7-27. MSTP Instance Table

Figure 7-28. MSTP Interface Settings

Figure 7-29. MSTP Interface Table

. . . . . . . . . . . . . . . . . 291

. . . . . . . . . . . . . . 292

. . . . . . . . . . . . 295

. . . . . . . . . . . . . . 297

. . . . . . . 288

Figure 7-30. VLAN Membership . . . . . . . . . . . . . . . 300

Figure 7-31. VLAN Port Settings

Figure 7-32. VLAN LAG Settings

Figure 7-33. Bind MAC to VLAN

Figure 7-34. GVRP Parameters

Figure 7-35. Private VLAN

Figure 7-36. Add Private VLAN

Figure 7-37. PV Ports Table

Figure 7-38. LACP Parameters

Figure 7-39. LAG Membership

Figure 7-40. Global Parameters

Figure 7-41. Bridge Multicast Group

. . . . . . . . . . . . . . . 305

. . . . . . . . . . . . . . . 307

. . . . . . . . . . . . . . . 310

. . . . . . . . . . . . . . . . 312

. . . . . . . . . . . . . . . . . . 316

. . . . . . . . . . . . . . . . 317

. . . . . . . . . . . . . . . . . 317

. . . . . . . . . . . . . . . . 320

. . . . . . . . . . . . . . . . 323

. . . . . . . . . . . . . . . 325

. . . . . . . . . . . . . 327

Figure 7-42. Add Bridge Multicast Group

Figure 7-43. Bridge Multicast Forward All

Figure 7-44. IGMP Snooping

Figure 8-1. Utilization Summary

Figure 8-2. Counter Summary

. . . . . . . . . . . . . . . . . 334

. . . . . . . . . . . . . . . 337

. . . . . . . . . . . . . . . . 339

. . . . . . . . . . . 328

. . . . . . . . . . 331

Figure 8-3. Interface Statistics

Figure 8-4. Etherlike Statistics

Figure 8-5. GVRP Statistics

Figure 8-6. EAP Statistics

Figure 8-7. RMON Statistics

. . . . . . . . . . . . . . . 340

. . . . . . . . . . . . . . . 343

. . . . . . . . . . . . . . . . . 345

. . . . . . . . . . . . . . . . . . 349

. . . . . . . . . . . . . . . . 352

Figure 8-8. RMON History Control

Figure 8-9. RMON History Table

. . . . . . . . . . . . . . . 357

Figure 8-10. RMON Events Control

Figure 8-11. RMON Events Log

Figure 8-12. RMON Alarms

. . . . . . . . . . . . . . . . 362

. . . . . . . . . . . . . . . . . 364

Figure 8-13. Add an Alarm Entry Page

. . . . . . . . . . . . . . 355

. . . . . . . . . . . . . . 360

. . . . . . . . . . . . 365

Contents 15

Figure 8-14. Port Statistics . . . . . . . . . . . . . . . . . . 368

Tables

Figure 8-15. LAG Statistics

Figure 8-16. CPU Utilization

Figure 9-1. Global Settings

Figure 9-2. Interface Settings

Figure 9-3. CoS to Queue

Figure 9-4. DSCP to Queue

. . . . . . . . . . . . . . . . . . 369

. . . . . . . . . . . . . . . . . 371

. . . . . . . . . . . . . . . . . 375

. . . . . . . . . . . . . . . . 377

. . . . . . . . . . . . . . . . . . 379

. . . . . . . . . . . . . . . . . 380

Table 2-1. PowerConnect 3424 and

PowerConnect 3448 RJ-45 100BaseT LED Indications

. . . . . . . . . . . . . . . . . . 41

Table 2-2. PowerConnect 3424P and

PowerConnect 3448P RJ-45 Copper based 100BaseT LED Indications

Table 2-3. PowerConnect 3424 and

PowerConnect 3448 RJ-45 Copper based 100BaseT LED Indications

Table 2-4. SFP Port LED Indications

. . . . . . 42

. . . . . . 43

. . . . . . . . . . . . 43

16 Contents

Table 2-5. System LED Indicators

Table 2-6. Stacking LED Indications

Table 4-7. Port Default Settings

Table 5-8. Interface Components

. . . . . . . . . . . . . . 44

. . . . . . . . . . . . 45

. . . . . . . . . . . . . . 77

. . . . . . . . . . . . . . 80

Table 5-9. PowerConnect Port and Stacking Indicators

Table 5-10. Information Buttons

Table 5-11. Device Management Buttons

Table 6-12. Asset CLI Commands

Table 6-13. Clock Setting CLI Commands

Table 6-14. Celsius to Fahrenheit Conversion Table

Table 6-15. System Health CLI Command

. . . . . . . . . . . . . . . 82

. . . . . . . . . . 82

. . . . . . . . . . . . . . 89

. . . . . . . . . . . 98

. . . . . . 100

. . . . . . . . . . 100

. . . 81

Table 6-16. System Health CLI Commands . . . . . . . . . . 104

Table 6-17. Versions CLI Commands

Table 6-18. Stack Management CLI Commands

Table 6-19. Reset CLI Command

. . . . . . . . . . . . 106

. . . . . . . 108

. . . . . . . . . . . . . . . 109

Table 6-20. SNTP Global Parameters CLI Commands

Table 6-21. SNTP Authentication CLI Commands

Table 6-22. SNTP Server CLI Commands

. . . . . . . 116

. . . . . . . . . . . 119

Table 6-23. SNTP Interface Settings CLI Commands

Table 6-24. Log Severity Levels

. . . . . . . . . . . . . . . 123

Table 6-25. Global Log Parameters CLI Commands

Table 6-26. RAM Log Table CLI Commands

Table 6-27. Log File Table CLI Commands

Table 6-28. Log File Table CLI Commands

Table 6-29. Remote Log Server CLI Commands

Table 6-30. Default Gateway CLI Commands

. . . . . . . . . . 127

. . . . . . . . . . 129

. . . . . . . . . . 131

. . . . . . . . 134

. . . . . . . . . 136

Table 6-31. IP Interface Parameters CLI Commands

Table 6-32. DHCP IP Interface CLI Commands

. . . . . . . . 141

. . . . . 113

. . . . . 121

. . . . . . 125

. . . . . 139

Table 6-33. DNS Server CLI Commands

. . . . . . . . . . . 144

Table 6-34. DNS Domain Name CLI Commands

Table 6-35. Domain Host Name CLI Commands

Table 6-36. ARP Settings CLI Commands

Table 6-37. Copper Cable Test CLI Commands

. . . . . . . . . . . 151

. . . . . . . . 153

Table 6-38. Fiber Optic Cable Test CLI Commands

Table 6-39. Access Profiles CLI Commands

. . . . . . . . . 160

Table 6-40. Authentication Profile CLI Commands

Table 6-41. Select Authentication CLI Commands

Table 6-42. Password Management Using

CLI Commands

. . . . . . . . . . . . . . . . . 172

. . . . . . . . 146

. . . . . . . . 148

. . . . . . 155

. . . . . . 166

. . . . . . 169

Contents 17

Table 6-43. Local User Database CLI Commands . . . . . . . 176

Table 6-44. Line Password CLI Commands

. . . . . . . . . . 178

Table 6-45. Modify Enable Password CLI Commands

Table 6-46. TACACS+ CLI Commands

Table 6-47. RADIUS Server CLI Commands

Table 6-48. SNMP Notification Commands

Table 6-49. SNMP View CLI Commands

. . . . . . . . . . . . 183

. . . . . . . . . . 187

. . . . . . . . . . 191

. . . . . . . . . . . 195

Table 6-50. SNMP Access Control CLI Commands

Table 6-51. SNMPv3 User CLI Commands

Table 6-52. SNMP Community CLI Commands

. . . . . . . . . . 201

. . . . . . . . 204

Table 6-53. SNMP Notification Filter CLI Commands

Table 6-54. SNMP Community CLI Commands

Table 6-55. File Download CLI Commands

Table 6-56. File Upload CLI Commands

Table 6-57. File Upload CLI Commands

Table 6-58. Copy Files CLI Commands

Table 6-59. Copy Files CLI Commands

. . . . . . . . 211

. . . . . . . . . . 215

. . . . . . . . . . . . 217

. . . . . . . . . . . . 219

. . . . . . . . . . . . 220

. . . . . . . . . . . . 222

. . . . . 180

. . . . . . 198

. . . . . 207

18 Contents

Table 6-60. General Settings CLI Commands

Table 7-61. Port Authentication CLI Commands

Table 7-62. Multiple Hosts CLI Commands

Table 7-63. Add User Name CLI Commands

Table 7-64. Port Security CLI Commands

. . . . . . . . . . 234

. . . . . . . . . 236

. . . . . . . . . . . 240

Table 7-65. MAC-Based ACE CLI Commands

Table 7-66. ACL Binding CLI Commands

. . . . . . . . . . . 246

Table 7-67. Port Configuration CLI Commands

Table 7-68. LAG Configuration CLI Commands

Table 7-69. Storm Control CLI Commands

Table 7-70. Port Mirroring CLI Commands

. . . . . . . . . . 259

. . . . . . . . . . 262

. . . . . . . . . 224

. . . . . . . 230

. . . . . . . . . 243

. . . . . . . . 250

. . . . . . . . 255

Table 7-71. Static Address CLI Commands . . . . . . . . . . 266

Table 7-72. Query and Sort CLI Commands

Table 7-73. GARP Timer CLI Commands

Table 7-74. STP Global Parameter CLI Commands

Table 7-75. STP Port Settings CLI Commands

Table 7-76. STP LAG Settings CLI Commands

Table 7-77. RSTP Settings CLI Command

Table 7-78. MSTP Instances CLI Commands

Table 7-79. MSTP Interface CLI Commands

. . . . . . . . . . 269

. . . . . . . . . . . 272

. . . . . . 276

. . . . . . . . 282

. . . . . . . . 286

. . . . . . . . . . . 290

. . . . . . . . . 293

. . . . . . . . . 297

Table 7-80. VLAN Membership Group CLI Commands

Table 7-81. VLAN Port Membership Table

. . . . . . . . . . 302

Table 7-82. Port-to-VLAN Group Assignments

CLI Commands

. . . . . . . . . . . . . . . . . 303

Table 7-83. LAG VLAN Assignments CLI Commands

Table 7-84. Binding MAC address to VLANs

CLI Commands

. . . . . . . . . . . . . . . . . 311

Table 7-85. GVRP Global Parameters CLI Commands

Table 7-86. Private VLAN CLI Commands

. . . . . . . . . . 318

. . . . . 301

. . . . . 308

. . . . . 313

Table 7-87. LACP Parameters CLI Commands

Table 7-88. LAG Membership CLI Commands

. . . . . . . . 321

. . . . . . . . . 324

Table 7-89. Multicast Filtering and Snooping

CLI Commands

. . . . . . . . . . . . . . . . . 326

Table 7-90. IGMP Port/LAG Members Table

Control Settings

. . . . . . . . . . . . . . . . 328

Table 7-91. Multicast Service Member CLI Commands

Table 7-92. Bridge Multicast Forward All Switch/Port

Control Settings Table

. . . . . . . . . . . . . 332

Table 7-93. CLI Commands for Managing LAGs and

Ports Attached to Multicast Routers

Table 7-94. IGMP Snooping CLI Commands

. . . . . . . 333

. . . . . . . . . 335

. . . . 329

Contents 19

Table 8-95. Interface Statistics CLI Commands . . . . . . . . 341

Table 8-96. Etherlike Statistics CLI Commands

Table 8-97. GVRP Statistics CLI Commands

Table 8-98. EAP Statistics CLI Commands

Table 8-99. RMON Statistics CLI Commands

Table 8-100. RMON History CLI Commands

. . . . . . . . 344

. . . . . . . . . 346

. . . . . . . . . . 350

. . . . . . . . . 353

. . . . . . . . . . 356

Table 8-101. RMON History Control CLI Commands

Table 8-102. Device Event Definition CLI Commands

Table 8-103. Device Event Definition CLI Commands

Table 8-104. Device Alarm CLI Commands

Table 8-105. Port Statistic CLI Commands

Table 8-106. LAG Statistic CLI Commands

. . . . . . . . . . 366

. . . . . . . . . . . 369

. . . . . . . . . . . 370

Table 9-107. CoS to Queue Mapping Table

Default values

. . . . . . . . . . . . . . . . . 373

Table 9-108. DSCP to Queue Mapping Table

Default Values

Table 9-109. QoS Settings CLI Commands

Table 9-110. QoS Interface CLI Commands

. . . . . . . . . . . . . . . . . 374

. . . . . . . . . . . 377

. . . . . . . . . . 378

. . . . . . 358

. . . . . . 361

. . . . . . 363

20 Contents

Table 9-111. CoS to Queue Settings CLI Commands

Table 9-112. DSCP Value to Queue CLI Commands

. . . . . . 380

. . . . . . 381

Introduction

PowerConnect 3424/3448 and PowerConnect 3424P/3448P are stackable, advanced multi-layer devices. PowerConnect units can function either as stand-alone, multi-layer, switching devices or stackable devices with up to six stacking members.

This

User Guide

the device.

System Description

PowerConnect 3424/3448 and PowerConnect 3424P/3448P combine versatility with minimal management. The PowerConnect 3424 and 3448 series include the following device types:

• PowerConnect 3424

• PowerConnect 3424P

• PowerConnect 3448

• PowerConnect 3448P

PowerConnect 3424

The PowerConnect 3424 provides 24 10/100Mbps ports plus two SFP ports, and two Copper ports which can be used to forward traffic in a stand-alone device, or as stacking ports when the device is stacked. The device also provides one RS-232 console port. The PowerConnect 3424 is a stackable device, but also operates as a stand-alone device.

contains the information needed for installing, configuring, and maintaining

PowerConnect 3424P

The PowerConnect 3424P provides 24 10/100Mbps ports plus two SFP ports, and two Copper ports which can be used to forward traffic in a stand-alone device, or as stacking ports when the device is stacked. The device also provides one RS-232 console port. The PowerConnect 3424P is a stackable device, but also operates as a stand-alone device. The PowerConnect 3424P also provides Power over Ethernet (PoE).

Figure 1-1. PowerConnect 3424 and PowerConnect 3424P

Introduction 21

PowerConnect 3448

The PowerConnect 3448 provides 48 10/100Mbps ports plus two SFP ports, and two Copper ports which can be used to forward traffic in a stand-alone device, or as stacking ports when the device is stacked. The device also provides one RS-232 console port. The PowerConnect 3448 is a stackable device, but also functions as a stand-alone device.

PowerConnect 3448P

The PowerConnect 3448P provides 48 10/100Mbps ports, two SFP ports, and two copper ports that can be used to forward traffic when the device is in stand-alone mode, or as stacking ports when the device is part of a stack. The device also provides one RS-232 console port. In addition, PowerConnect 3448P provides PoE.

www.dell.com | support.dell.com

Figure 1-2. PowerConnect 3448 and PowerConnect 3448P

Stacking Overview

PowerConnect 3424/P and PowerConnect 3448/P stacking provides multiple switch management through a single point as if all stack members are a single unit. All stack members are accessed through a single IP address through which the stack is managed. The stack is managed from a:

• Web-based interface

• SNMP Management Station

• Command Line Interface (CLI)

PowerConnect 3424/P and PowerConnect 3448/P devices support stacking up to six units per stack, or can operate as stand-alone units.

During the Stacking setup, one switch is selected as the Stack Master and another stacking member can be selected as the Backup Master. All other devices are selected as stack members, and assigned a unique Unit ID.

Switch software is downloaded separately for each stack members. However, all units in the stack must be running the same software version.

Switch stacking and configuration is maintained by the Stack Master. The Stack Master detects and reconfigures the ports with minimal operational impact in the event of:

• Unit Failure

• Inter-unit Stacking Link Failure

• Unit Insertion

• Removal of a Stacking Unit

22 Introduction

Understanding the Stack Topology

The PowerConnect 3400 series operates in a Ring topology. A stacked Ring topology is where all devices in the stack are connected to each other forming a circle. Each device in the stack accepts data and sends it to the device to which it is attached. The packet continues through the stack until it reaches its destination. The system discovers the optimal path on which to send traffic.

Figure 1-3. Stacking Ring Topology

Ring Topology

Most difficulties incurred in Ring topologies occur when a device in the ring becomes nonfunctional, or a link is severed. With the PowerConnect 3424/P and PowerConnect 3448/P stack, the system automatically switches to a Stacking Failover topology without any system downtime. An SNMP message is automatically generated, but no stack management action is required. However, the stacking link or stacking member must be repaired to ensure the stacking integrity.

After the stacking issues are resolved, the device can be reconnected to the stack without interruption, and the Ring topology is restored.

Stacking Failover Topology

If a failure occurs in the stacking topology, the stack reverts to Stacking Failover Topology. In the Stacking Failover topology, devices operate in a chain formation. The Stack Master determines where the packets are sent. Each unit is connected to two neighboring devices, except for the top and bottom units.

Stacking Members and Unit ID

Stacking Unit IDs are essential to the stacking configuration. The stacking operation is determined during the boot process. The operation mode is determined by the Unit ID selected during the initialization process. For example, if the user selected the stand-alone mode, the device boots in the boot-up process as a stand-alone device.

The device units are shipped with a default Unit ID of the stand-alone unit. If the device is operating as a stand-alone unit, all stacking LEDs are off.

Introduction 23

Once the user selects a different Unit ID, it is not erased, and remains valid, even if the unit is reset.

Unit ID 1 and Unit ID 2 are reserved for Master enabled units. Unit IDs 3 to 6 can be defined for stack members.

When the Master unit boots or when inserting or removing a stack member, the Master unit initiates a stacking discovering process.

NOTE: If two members are discovered with the same Unit ID the stack continues to function, however

only the unit with the older join time joins the stack. A message is sent to the user, notifying that a unit failed to join the stack.

Removing and Replacing Stacking Members

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Unit 1 and Unit 2 are Master enabled units. Unit 1 and Unit 2 are either designated as Master Unit or Backup Master Unit. The stack Master assignment is performed during the configuration process. One Master enabled stack member is elected as Master, and the other Master enabled stack member is elected as Backup Master, according to the following decision process:

• If only one Stack Master enabled unit is present, it is elected as the Master.

• If two Master enabled stacking members are present, and one has been manually configured as the Stack Master, the manually configured member is elected as Stack Master.

• If two Master enabled units are present and neither has been manually configured as the Master, the one with the longer up-time is elected as the Stack Master.

• If two Master enabled units are present and both have been manually configured as the Master, the one with the longer up-time is elected as the Stack Master.

• If the two Master enabled stacking members are the same age, Unit 1 is elected as the Stack Master.

For example, Unit 2 is inserted in the first minute of a ten-minute cycle, and Unit 1 is inserted in fifth minute of the same cycle, the units are considered to be the same age. If there are two Master enabled stack members that are the same age, then Unit 1 is elected master.

The Stack Master and the Backup Master maintain a Warm Standby. The Warm Standby ensures that the Backup Master takes over for the Stack Master if a failover occurs. This guarantees that the stack continues to operate normally.

During the Warm Standby, the Master and the Backup Master are synchronized with the static configuration only. When the Stacking Master is configured, the Stack Master must synchronize the Stacking Backup Master. The Dynamic configuration is not saved, for example, dynamically learned MAC addresses are not saved.

Each port in the stack has a specific Unit ID, port type, and port number, which are part of both the configuration commands and the configuration files. Configuration files are managed only from the device Stack Master, including:

24 Introduction

NOTE: Two stacking member are considered the same age if they were inserted within a

ten minute interval.

• Saving to the FLASH

• Uploading Configuration files to an external TFTP Server

• Downloading Configuration files from an external TFTP Server

NOTE: Stack configuration for all configured ports is saved, even if the stack is reset and/or the

ports are no longer present.

Whenever a reboot occurs, topology discovery is performed, and the Master learns all units in the stack. Unit IDs are saved in the unit and are learned through topology discovery. If a unit attempts to boot without a selected Master, and the unit is not operating in stand-alone mode, the unit does not boot.

Configuration files are changed only through explicit user configuration. Configuration files are not automatically modified when:

• Units are Added

• Units are Removed

• Units are reassigned Unit IDs

• Units toggle between Stacking Mode and Stand-alone Mode

Each time the system reboots, the Startup Configuration file in the Master unit is used to configure the stack.

If a stack member is removed from the stack, and then replaced with a unit with the same Unit ID, the stack member is configured with the original device configuration. Only ports which are physically present are displayed in the PowerConnect OpenManage Switch Administrator home page, and can be configured through the web management system. Non-present ports are configured through the CLI or SNMP interfaces.

Exchanging Stacking Members

If a stack member with the same Unit ID replaces an existing Unit ID with the same Unit ID, the previous device configuration is applied to the inserted stack member. If the new inserted device has either more or fewer ports than the previous device, the relevant port configuration is applied to the new stack member. For example,

• If a PowerConnect 3424/P replaces PowerConnect 3424/P, all port configurations remain the same.

• If a PowerConnect 3448/P replaces the PowerConnect 3448/P, all port configurations remain the same.

Introduction 25

Figure 1-4. PowerConnect 3448/P replaces PowerConnect 3448/P

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• If a PowerConnect 3448/P replaces PowerConnect 3424/P, the first 3448/P 24 FE ports receive the 3424/P 24 FE port configuration. The GE port configurations remain the same. The remaining ports receive the default port configuration.

Figure 1-5. PowerConect 3424/P port replaces PowerConnect 3448/P port

Same

Configuration

Same

Configuration

Same

Configuration

Same

Configuration

Same

Configuration

• If a PowerConnect 3424/P replaces PowerConnect 3448/P, the PowerConnect 3424/P 24 FE ports receives the first 24 FE PowerConnect 3448/P port configuration. The GE port configurations remain the same.

26 Introduction

Default

Configuration

Figure 1-6. PowerConnect 3448/P port replaces PowerConect 3424/P Port

Same

Configuration

Same

Configuration

Switching from the Stack Master to the Backup Stack Master

The Backup Master replaces the Stack Master if the following events occur:

• The Stack Master fails or is removed from the stack.

• Links from the Stack Master to the stacking members fails.

• A soft switchover is performed with either via web interface or the CLI.

Switching between the Stack Master and the Backup Master results in a limited service loss. Any dynamic tables are relearned if a failure occurs. The running configuration file is synchronized between Stack Master and the Backup Master, and continues running on the Backup Master.

Introduction 27

Features Overview

This section describes the device features. For a complete list of all updated device features, see the latest software version

Power over Ethernet

Power over Ethernet (PoE) provides power to devices over existing LAN cabling, without updating or modifying the network infrastructure. PoE removes the need for placing network devices next to power sources. PoE can be used in the following applications:

• IP Phones

• Wireless Access Points

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• IP Gateways

•PDAs

• Audio and video remote monitoring

For more information about Power over Ethernet, see "Managing Power over Ethernet".

Head of Line Blocking

Head of Line (HOL) blocking results in traffic delays and frame loss caused by traffic competing for the same egress port resources. HOL blocking queues packets, and the packets at the head of the queue are forwarded before packets at the end of the queue.

Flow Control Support (IEEE 802.3X)

Flow control enables lower speed devices to communicate with higher speed devices, by requesting that the higher speed device refrains from sending packets. Transmissions are temporarily halted to prevent buffer overflows.

For information on configuring Flow Control for ports or LAGs, see "Defining Port Configuration" or "Defining LAG Parameters."

Release Notes

Back Pressure Support

On half-duplex links, the receiving port prevents buffer overflows by occupying the link so that it is unavailable for additional traffic.

For information on configuring Flow Control for ports or LAGs, see "Defining Port Configuration" or "Defining LAG Parameters."

Virtual Cable Testing (VCT)

VCT detects and reports copper link cabling occurrences such as open cables and cable shorts. For more information on testing cables, see "Running Cable Diagnostics".

28 Introduction

MDI/MDIX Support

The device automatically detects whether the cable connected to an RJ-45 port is crossed or straight through, when auto-negotiation is enabled.

Standard wiring for end stations is hubs and switches is known as

For information on configuring MDI/MDIX for ports or LAGs, see "Defining Port Configuration" or "Defining LAG Parameters."

Media-Dependent Interface

Media-Dependent Interface with Crossover

(MDI) and the standard wiring for

(MDIX).

Auto Negotiation

Auto negotiation allows the device to advertise modes of operation. The auto negotiation function provides the means to exchange information between two devices that share a point-to-point link segment, and to automatically configure both devices to take maximum advantage of their transmission capabilities.

The PowerConnect 3400 series enhances auto negotiation by providing port advertisement. Port advertisement allows the system administrator to configure the port speeds that are advertised.

For more information on auto-negotiation, see "Defining Port Configuration" or "Defining LAG Parameters."

MAC Address Supported Features

MAC Address Capacity Support

The device supports up to 8K MAC addresses. The device reserves specific MAC addresses for system use.

Static MAC Entries

MAC entries can be manually entered in the Bridging Table, as an alternative to learning them from incoming frames. These user-defined entries are not subject to aging, and are preserved across resets and reboots.

For more information, see "Defining Static Addresses."

Self-Learning MAC Addresses

The device enables automatic MAC address learning from incoming packets. The MAC addresses are stored in the Bridging Table.

Automatic Aging for MAC Addresses

MAC addresses, from which no traffic is received for a given period, are aged out. This prevents the Bridging Table from overflowing.

For more information on configuring the MAC Address Age Out Time, see "Viewing Dynamic Addresses."

Introduction 29

VLAN-aware MAC-based Switching

The device always performs VLAN-aware bridging. Classic bridging(IEEE802.1D) is not performed, where frames are forwarded based only on their destination MAC address. However, a similar functionality can be configured for untagged frames. Frames addressed to a destination MAC address that is not associated with any port are flooded to all ports of the relevant VLAN.

MAC Multicast Support

Multicast service is a limited broadcast service, which allows one-to-many and many-to-many connections for information distribution. Layer 2 Multicast service is where a single frame is addressed to a specific Multicast address, from where copies of the frame are transmitted to the relevant ports.

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For more information, see "Assigning Multicast Forward All Parameters."

Layer 2 Features

IGMP Snooping

IGMP Snooping examines IGMP frame contents, when they are forwarded by the device from work stations to an upstream Multicast router. From the frame, the device identifies work stations configured for Multicast sessions, and which Multicast routers are sending Multicast frames.

For more information, see "IGMP Snooping."

Port Mirroring

Port mirroring monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from a monitored port to a monitoring port. Users specify which target port receives copies of all traffic passing through a specified source port.

For more information, see "Defining Port Mirroring Sessions."

Broadcast Storm Control

Storm Control enables limiting the amount of Multicast and Broadcast frames accepted and forwarded by the device.

When Layer 2 frames are forwarded, Broadcast and Multicast frames are flooded to all ports on the relevant VLAN. This occupies bandwidth, and loads all nodes connected on all ports.

For more information, see "Enabling Storm Control."

30 Introduction

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