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.

____________________

Information in this document is subject to change without notice. © 2005 Dell Inc. All rights reserved.

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 . . . . . . . . . . . . . . . . . . . . . . . . . .	21
PowerConnect 3424P . . . . . . . . . . . . . . . . . . . . . . . . .	21
PowerConnect 3448 . . . . . . . . . . . . . . . . . . . . . . . . . .	22
PowerConnect 3448P . . . . . . . . . . . . . . . . . . . . . . . . .	22
Stacking Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .	22
Understanding the Stack Topology . . . . . . . . . . . . . . . . . . .	23
Stacking Failover Topology . . . . . . . . . . . . . . . . . . . . . .	23
Stacking Members and Unit ID. . . . . . . . . . . . . . . . . . . . .	23
Removing and Replacing Stacking Members . . . . . . . . . . . . . .	24
Exchanging Stacking Members . . . . . . . . . . . . . . . . . . . .	25
Switching from the Stack Master to the Backup Stack Master. . . . . . 27
Features Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . .	28
Power over Ethernet . . . . . . . . . . . . . . . . . . . . . . . . .	28
Head of Line Blocking . . . . . . . . . . . . . . . . . . . . . . . . .	28
Flow Control Support (IEEE 802.3X) . . . . . . . . . . . . . . . . . . .	28
Back Pressure Support . . . . . . . . . . . . . . . . . . . . . . . .	28
Virtual Cable Testing (VCT). . . . . . . . . . . . . . . . . . . . . . .	28
MDI/MDIX Support . . . . . . . . . . . . . . . . . . . . . . . . . .	29
Auto Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . .	29
MAC Address Supported Features . . . . . . . . . . . . . . . . . . .	29
Layer 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . .	30
VLAN Supported Features . . . . . . . . . . . . . . . . . . . . . . .	31
Spanning Tree Protocol Features. . . . . . . . . . . . . . . . . . . .	31
Link Aggregation . . . . . . . . . . . . . . . . . . . . . . . . . . .	32
Quality of Service Features . . . . . . . . . . . . . . . . . . . . . .	33
Device Management Features . . . . . . . . . . . . . . . . . . . . .	33
Security Features . . . . . . . . . . . . . . . . . . . . . . . . . . .	35
Additional CLI Documentation . . . . . . . . . . . . . . . . . . . . . . .	36

Contents 3

2 Hardware Description

Port Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	37
PowerConnect 3424 Port Description. . . . . . . . . . . . . . . . . .	37
PowerConnect 3448 Port Description. . . . . . . . . . . . . . . . . .	38
SFP Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	39
RS-232 Console Port. . . . . . . . . . . . . . . . . . . . . . . . . .	39
Physical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . .	40
LED Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	40
Gigabit Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . .	43
System LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	44
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . .	45
Stack ID Button . . . . . . . . . . . . . . . . . . . . . . . . . . . .	47
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	47
Ventilation System. . . . . . . . . . . . . . . . . . . . . . . . . . .	47

3 Installing the PowerConnect 3424/P and

PowerConnect 3448/P

Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	49
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	49
Package Contents. . . . . . . . . . . . . . . . . . . . . . . . . . .	49
Unpacking the Device . . . . . . . . . . . . . . . . . . . . . . . . .	50
Mounting the Device. . . . . . . . . . . . . . . . . . . . . . . . . . . .	50
Installing in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . .	50
Installing on a Flat Surface . . . . . . . . . . . . . . . . . . . . . .	51
Installing the Device on a Wall . . . . . . . . . . . . . . . . . . . . .	52
Connecting to a Terminal . . . . . . . . . . . . . . . . . . . . . . .	53
Connecting a Device to a Power Supply . . . . . . . . . . . . . . . . . .	54
Installing a Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
Stacking PowerConnect 3400 Series Switches . . . . . . . . . . . . .	54
Unit ID Selection Process . . . . . . . . . . . . . . . . . . . . . . .	56
Starting and Configuring the Device . . . . . . . . . . . . . . . . . . . .	57
Connecting to the Device . . . . . . . . . . . . . . . . . . . . . . .	57

4 Contents

4 Configuring PowerConnect 3424/P and 3448/P

Configuration Procedures . . . . . . . . . . . . . . . . . . . . . . . . .	59
Booting the Switch . . . . . . . . . . . . . . . . . . . . . . . . . .	60
Initial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .	61
Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .	65
Retrieving an IP Address From a DHCP Server . . . . . . . . . . . . .	65
Receiving an IP Address From a BOOTP Server . . . . . . . . . . . . .	66
Security Management and Password Configuration. . . . . . . . . . .	67
Startup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . .	70
Startup Menu Procedures . . . . . . . . . . . . . . . . . . . . . . .	70
Software Download Through TFTP Server . . . . . . . . . . . . . . .	73
Port Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .	76
Auto-Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . .	76
MDI/MDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	76
Flow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	76
Back Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . .	76
Switching Port Default Settings . . . . . . . . . . . . . . . . . . . .	77

5 Using Dell OpenManage Switch Administrator

Starting the Application . . . . . . . . . . . . . . . . . . . . . . . . . .	79
Understanding the Interface . . . . . . . . . . . . . . . . . . . . . . . .	79
Device Representation . . . . . . . . . . . . . . . . . . . . . . . .	81
Using the Switch Administrator Buttons . . . . . . . . . . . . . . . . . .	82
Information Buttons . . . . . . . . . . . . . . . . . . . . . . . . . .	82
Device Management Buttons . . . . . . . . . . . . . . . . . . . . .	82
Field Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	83
Accessing the Device Through the CLI . . . . . . . . . . . . . . . . . . .	83
Terminal Connection . . . . . . . . . . . . . . . . . . . . . . . . .	83
Telnet Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .	84
Using the CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	84
Command Mode Overview. . . . . . . . . . . . . . . . . . . . . . .	84
User EXEC Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .	85
Privileged EXEC Mode. . . . . . . . . . . . . . . . . . . . . . . . .	85
Global Configuration Mode . . . . . . . . . . . . . . . . . . . . . .	86

Contents 5

6 Configuring System Information

Defining General Switch Information . . . . . . . . . . . . . . . . . . . .	88
Viewing Switch Asset Information . . . . . . . . . . . . . . . . . . .	88
Defining System Time Settings . . . . . . . . . . . . . . . . . . . . .	93
Viewing System Health Information . . . . . . . . . . . . . . . . . .	98
Managing Power over Ethernet . . . . . . . . . . . . . . . . . . .	101
Viewing Version Information . . . . . . . . . . . . . . . . . . . . .	106
Managing Stack Members. . . . . . . . . . . . . . . . . . . . . .	107
Resetting the Device . . . . . . . . . . . . . . . . . . . . . . . .	109
Configuring SNTP Settings . . . . . . . . . . . . . . . . . . . . . . . .	110
Defining SNTP Global Parameters . . . . . . . . . . . . . . . . . .	112
Defining SNTP Authentication Methods . . . . . . . . . . . . . . .	114
Defining SNTP Servers . . . . . . . . . . . . . . . . . . . . . . .	116
Defining SNTP Interfaces . . . . . . . . . . . . . . . . . . . . . .	120
Managing Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	122
Defining Global Log Parameters . . . . . . . . . . . . . . . . . . .	122
Viewing the RAM Log Table . . . . . . . . . . . . . . . . . . . . .	126
Viewing the Log File Table . . . . . . . . . . . . . . . . . . . . . .	128
Viewing the Device Login History . . . . . . . . . . . . . . . . . .	130
Modifying Remote Log Server Definitions. . . . . . . . . . . . . . .	132
Defining IP Addressing. . . . . . . . . . . . . . . . . . . . . . . . . .	135
Defining Default Gateways. . . . . . . . . . . . . . . . . . . . . .	135
Defining IP Interfaces . . . . . . . . . . . . . . . . . . . . . . . .	137
Defining DHCP IP Interface Parameters . . . . . . . . . . . . . . .	140
Configuring Domain Name Systems . . . . . . . . . . . . . . . . .	142
Defining Default Domains . . . . . . . . . . . . . . . . . . . . . .	145
Mapping Domain Host. . . . . . . . . . . . . . . . . . . . . . . .	146
Defining ARP Settings . . . . . . . . . . . . . . . . . . . . . . . .	149
Running Cable Diagnostics. . . . . . . . . . . . . . . . . . . . . . . .	152
Viewing Copper Cable Diagnostics . . . . . . . . . . . . . . . . . .	152
Viewing Optical Transceiver Diagnostics . . . . . . . . . . . . . . .	154
Managing Switch Security . . . . . . . . . . . . . . . . . . . . . . . .	156
Defining Access Profiles . . . . . . . . . . . . . . . . . . . . . .	156
Defining Authentication Profiles . . . . . . . . . . . . . . . . . . .	163
Selecting Authentication Profiles . . . . . . . . . . . . . . . . . .	166
Managing Passwords . . . . . . . . . . . . . . . . . . . . . . . .	170
Defining the Local User Databases. . . . . . . . . . . . . . . . . .	173

6 Contents

Defining Line Passwords . . . . . . . . . . . . . . . . . . . . . .	177
Defining Enable Passwords . . . . . . . . . . . . . . . . . . . . .	179
Defining TACACS+ Settings . . . . . . . . . . . . . . . . . . . . .	180
Configuring RADIUS Settings . . . . . . . . . . . . . . . . . . . .	184
Defining SNMP Parameters . . . . . . . . . . . . . . . . . . . . . . .	189
Defining SNMP Global Parameters. . . . . . . . . . . . . . . . . .	190
Defining SNMP View Settings . . . . . . . . . . . . . . . . . . . .	193
Defining SNMP Access Control . . . . . . . . . . . . . . . . . . .	196
Assigning SNMP User Security . . . . . . . . . . . . . . . . . . .	199
Defining SNMP Communities . . . . . . . . . . . . . . . . . . . .	202
Defining SNMP Notification Filters . . . . . . . . . . . . . . . . . .	205
Defining SNMP Notification Recipients. . . . . . . . . . . . . . . .	208
Managing Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	212
Management File Overview . . . . . . . . . . . . . . . . . . . . .	212
Downloading Files. . . . . . . . . . . . . . . . . . . . . . . . . .	213
Uploading Files . . . . . . . . . . . . . . . . . . . . . . . . . . .	215
Activating Image Files . . . . . . . . . . . . . . . . . . . . . . . .	218
Copying Files . . . . . . . . . . . . . . . . . . . . . . . . . . . .	219
Managing Device Files . . . . . . . . . . . . . . . . . . . . . . .	221
Configuring General Settings. . . . . . . . . . . . . . . . . . . . . . .	223

7 Configuring Switch Information

Configuring Network Security . . . . . . . . . . . . . . . . . . . . . .	225
Port Based Authentication. . . . . . . . . . . . . . . . . . . . . .	225
Configuring Port Based Authentication . . . . . . . . . . . . . . . . . .	227
Configuring Advanced Port Based Authentication. . . . . . . . . . .	231
Authenticating Users . . . . . . . . . . . . . . . . . . . . . . . .	235
Configuring Port Security . . . . . . . . . . . . . . . . . . . . . .	237
Defining MAC Based ACLs. . . . . . . . . . . . . . . . . . . . . .	241
Configuring ACL Binding. . . . . . . . . . . . . . . . . . . . . . .	244
Configuring Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . .	246
Defining Port Configuration . . . . . . . . . . . . . . . . . . . . .	246
Defining LAG Parameters . . . . . . . . . . . . . . . . . . . . . .	252
Enabling Storm Control . . . . . . . . . . . . . . . . . . . . . . .	257
Defining Port Mirroring Sessions. . . . . . . . . . . . . . . . . . .	260

Contents 7

Configuring Address Tables . . . . . . . . . . . . . . . . . . . . . . .	263
Defining Static Addresses . . . . . . . . . . . . . . . . . . . . . .	263
Viewing Dynamic Addresses. . . . . . . . . . . . . . . . . . . . .	267
Configuring GARP . . . . . . . . . . . . . . . . . . . . . . . . . . . .	270
Defining GARP Timers . . . . . . . . . . . . . . . . . . . . . . . .	270
Configuring the Spanning Tree Protocol . . . . . . . . . . . . . . . . .	273
Defining STP Global Settings. . . . . . . . . . . . . . . . . . . . .	274
Defining STP Port Settings. . . . . . . . . . . . . . . . . . . . . .	280
Defining STP LAG Settings. . . . . . . . . . . . . . . . . . . . . .	284
Defining Rapid Spanning Tree . . . . . . . . . . . . . . . . . . . .	288
Configuring Multiple Spanning Tree . . . . . . . . . . . . . . . . .	291
Defining MSTP Interface Settings . . . . . . . . . . . . . . . . . .	295
Configuring VLANs. . . . . . . . . . . . . . . . . . . . . . . . . . . .	299
Defining VLAN Membership . . . . . . . . . . . . . . . . . . . . .	300
Defining VLAN Ports Settings . . . . . . . . . . . . . . . . . . . .	305
Defining VLAN LAGs Settings . . . . . . . . . . . . . . . . . . . .	307
Binding MAC Address to VLANs . . . . . . . . . . . . . . . . . . .	310
Configuring GVRP Parameters . . . . . . . . . . . . . . . . . . . .	312
Configuring Private VLANs. . . . . . . . . . . . . . . . . . . . . .	315
Aggregating Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . .	319
Defining LACP Parameters. . . . . . . . . . . . . . . . . . . . . .	319
Defining LACP Parameters. . . . . . . . . . . . . . . . . . . . . .	320
Defining LAG Membership . . . . . . . . . . . . . . . . . . . . . .	322
Multicast Forwarding Support . . . . . . . . . . . . . . . . . . . . . .	324
Defining Multicast Global Parameters . . . . . . . . . . . . . . . .	324
Adding Bridge Multicast Address Members . . . . . . . . . . . . .	326
Assigning Multicast Forward All Parameters . . . . . . . . . . . . .	331
IGMP Snooping . . . . . . . . . . . . . . . . . . . . . . . . . . .	334

8 Viewing Statistics

Viewing Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	337
Viewing Utilization Summary. . . . . . . . . . . . . . . . . . . . .	337
Viewing Counter Summary. . . . . . . . . . . . . . . . . . . . . .	338
Viewing Interface Statistics . . . . . . . . . . . . . . . . . . . . .	340
Viewing Etherlike Statistics . . . . . . . . . . . . . . . . . . . . .	343
Viewing GVRP Statistics . . . . . . . . . . . . . . . . . . . . . . .	345

8 Contents

Viewing EAP Statistics . . . . . . . . . . . . . . . . . . . . . . .	349
Viewing EAP Statistics Using the CLI Commands . . . . . . . . . . .	350
Viewing RMON Statistics . . . . . . . . . . . . . . . . . . . . . . . .	352
Viewing RMON Statistics Group . . . . . . . . . . . . . . . . . . .	352
Viewing RMON History Control Statistics . . . . . . . . . . . . . . .	354
Viewing the RMON History Table. . . . . . . . . . . . . . . . . . .	356
Defining Device RMON Events . . . . . . . . . . . . . . . . . . . .	360
Viewing the RMON Events Log . . . . . . . . . . . . . . . . . . . .	362
Defining RMON Device Alarms. . . . . . . . . . . . . . . . . . . .	363
Viewing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	367
Viewing Port Statistics . . . . . . . . . . . . . . . . . . . . . . .	367
Viewing LAG Statistics . . . . . . . . . . . . . . . . . . . . . . .	369
Viewing the CPU Utilization . . . . . . . . . . . . . . . . . . . . .	371

9 Configuring Quality of Service

Quality of Service (QoS) Overview . . . . . . . . . . . . . . . . . . . .	373
CoS Services . . . . . . . . . . . . . . . . . . . . . . . . . . . .	374
Defining QoS Global Parameters . . . . . . . . . . . . . . . . . . . . .	375
Configuring QoS Global Settings . . . . . . . . . . . . . . . . . . .	375
Defining QoS Interface Settings . . . . . . . . . . . . . . . . . . .	377
Mapping CoS Values to Queues . . . . . . . . . . . . . . . . . . .	379
Mapping DSCP Values to Queues . . . . . . . . . . . . . . . . . .	380
A Device Feature Interaction Information
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	387
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	399

Contents 9

Figures

Figure 1-1.	PowerConnect 3424 and PowerConnect 3424P . . .	21
Figure 1-2.	PowerConnect 3448 and PowerConnect 3448P . . .	22
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 . . . . . . . . . . . . .	27
Figure 2-1.	PowerConnect 3424 Front Panel . . . . . . . . . .	37
Figure 2-2.	PowerConnect 3424 Back Panel . . . . . . . . . .	38
Figure 2-3.	PowerConnect 3448 Front Panel . . . . . . . . . .	38
Figure 2-4.	PowerConnect 3448 Back Panel . . . . . . . . . .	39
Figure 2-5.	Console Port . . . . . . . . . . . . . . . . . . .	39
Figure 2-6.	RJ-45 Copper Based 10/100 BaseT LEDs . . . . . .	40
Figure 2-7.	RJ-45 1000 BaseT LED . . . . . . . . . . . . . . .	41
Figure 2-8.	SFP Port LEDs . . . . . . . . . . . . . . . . . . .	43
Figure 2-9.	System LEDs . . . . . . . . . . . . . . . . . . .	44
Figure 2-10.	Stacking LEDs . . . . . . . . . . . . . . . . . .	45
Figure 2-11.	Power Connection . . . . . . . . . . . . . . . .	46
Figure 3-1.	Bracket Installation for Rack Mounting . . . . . . .	51
Figure 3-2.	Bracket Installation for Mounting on a Wall . . . . .	52
Figure 3-3.	Mounting a Device on a Wall . . . . . . . . . . .	53
Figure 3-4.	Back-Panel Power Connector . . . . . . . . . . .	54
Figure 3-5.	Stacking Cable Diagram . . . . . . . . . . . . . .	55
Figure 3-6.	Stacking Configuration and Identification Panel . . .	56
Figure 3-7.	Connecting to PowerConnect 3400 Series
	Console Port . . . . . . . . . . . . . . . . . . .	58

10 Contents

Figure 4-1.	Installation and Configuration Flow . . . . . . . . .	60
Figure 5-1.	Switch Administrator Components . . . . . . . . .	80
Figure 5-2.	PowerConnect Device Port Indicators . . . . . . .	81
Figure 6-1.	System . . . . . . . . . . . . . . . . . . . . . .	87
Figure 6-2.	Asset . . . . . . . . . . . . . . . . . . . . . . .	88
Figure 6-3.	Time Synchronization . . . . . . . . . . . . . . .	95
Figure 6-4.	System Health . . . . . . . . . . . . . . . . . .	99
Figure 6-5.	Power Over Ethernet . . . . . . . . . . . . . .	102
Figure 6-6.	Versions . . . . . . . . . . . . . . . . . . . .	106
Figure 6-7.	Stack Management . . . . . . . . . . . . . . .	107
Figure 6-8.	SNTP Global Settings . . . . . . . . . . . . . .	112
Figure 6-9.	SNTP Authentication . . . . . . . . . . . . . .	114
Figure 6-10.	Add Authentication Key . . . . . . . . . . . . .	115
Figure 6-11.	Authentication Key Table . . . . . . . . . . . .	115
Figure 6-12.	SNTP Servers . . . . . . . . . . . . . . . . . .	117
Figure 6-13.	Add SNTP Server . . . . . . . . . . . . . . . .	118
Figure 6-14.	SNTP Servers Table . . . . . . . . . . . . . . .	118
Figure 6-15.	SNTP Interface Settings . . . . . . . . . . . . .	120
Figure 6-16.	Add SNTP Interface . . . . . . . . . . . . . . .	121
Figure 6-17.	Global Log Parameters . . . . . . . . . . . . .	123
Figure 6-18.	RAM Log Table . . . . . . . . . . . . . . . . .	126
Figure 6-19.	Log File Table . . . . . . . . . . . . . . . . . .	128
Figure 6-20.	Login History . . . . . . . . . . . . . . . . . .	130
Figure 6-21.	Remote Log Server Settings . . . . . . . . . . .	132
Figure 6-22.	Add a Log Server . . . . . . . . . . . . . . . .	133
Figure 6-23.	Log Servers Table . . . . . . . . . . . . . . . .	134
Figure 6-24.	IP Interfaces Parameters . . . . . . . . . . . .	137
Figure 6-25.	Add a Static IP Interface . . . . . . . . . . . .	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) . . . . . . . . . .	142
Figure 6-29.	Add DNS Server . . . . . . . . . . . . . . . .	143
Figure 6-30.	DNS Server Table . . . . . . . . . . . . . . . .	143
Figure 6-31.	Default Domain Name . . . . . . . . . . . . . .	145
Figure 6-32.	Host Name Mapping . . . . . . . . . . . . . .	146
Figure 6-33.	Add Host Name Mapping . . . . . . . . . . . .	147
Figure 6-34.	Hosts Name Mapping Table . . . . . . . . . . .	148
Figure 6-35.	ARP Settings . . . . . . . . . . . . . . . . . .	149
Figure 6-36.	Copper Cables . . . . . . . . . . . . . . . . .	152
Figure 6-37.	Optical Transceiver . . . . . . . . . . . . . . .	154
Figure 6-38.	Access Profiles . . . . . . . . . . . . . . . . .	157
Figure 6-39.	Add an Access Profile . . . . . . . . . . . . . .	158
Figure 6-40.	Add an Access Profile Rule . . . . . . . . . . .	159
Figure 6-41.	Profile Rules Table . . . . . . . . . . . . . . .	160
Figure 6-42.	Authentication Profiles . . . . . . . . . . . . .	163
Figure 6-43.	Add Authentication Profile . . . . . . . . . . . .	165
Figure 6-44.	Select Authentication . . . . . . . . . . . . . .	167
Figure 6-45.	Password Management . . . . . . . . . . . . .	171
Figure 6-46.	Local User Database . . . . . . . . . . . . . .	173
Figure 6-47.	Add a User . . . . . . . . . . . . . . . . . . .	175
Figure 6-48.	Local User Table . . . . . . . . . . . . . . . .	175
Figure 6-49.	Line Password . . . . . . . . . . . . . . . . .	177
Figure 6-50.	Enable Password . . . . . . . . . . . . . . . .	179
Figure 6-51.	TACACS+ Settings . . . . . . . . . . . . . . .	181
Figure 6-52.	Add TACACS+ Host . . . . . . . . . . . . . . .	182
Figure 6-53.	TACACS+ Table . . . . . . . . . . . . . . . . .	183

12 Contents

Figure 6-54.	RADIUS Settings . . . . . . . . . . . . . . . .	185
Figure 6-55.	Add RADIUS Server . . . . . . . . . . . . . . .	186
Figure 6-56.	RADIUS Servers List . . . . . . . . . . . . . . .	187
Figure 6-57.	SNMP Global Parameters . . . . . . . . . . . .	190
Figure 6-58.	SNMPv3 View Settings . . . . . . . . . . . . .	193
Figure 6-59.	Add A View . . . . . . . . . . . . . . . . . . .	194
Figure 6-60.	View Table . . . . . . . . . . . . . . . . . . .	194
Figure 6-61.	Access Control Group . . . . . . . . . . . . . .	196
Figure 6-62.	Add an Access Control Group . . . . . . . . . .	197
Figure 6-63.	Access Table . . . . . . . . . . . . . . . . . .	197
Figure 6-64.	SNMPv3 User Security Model (USM) . . . . . . .	199
Figure 6-65.	Add SNMPv3 User Name . . . . . . . . . . . .	200
Figure 6-66.	User Security Model Table . . . . . . . . . . .	201
Figure 6-67.	SNMPv1,2 Community . . . . . . . . . . . . . .	202
Figure 6-68.	Add SNMP Community . . . . . . . . . . . . .	203
Figure 6-69.	Notification Filter . . . . . . . . . . . . . . . .	205
Figure 6-70.	Add Filter . . . . . . . . . . . . . . . . . . . .	206
Figure 6-71.	Filter Table . . . . . . . . . . . . . . . . . . .	206
Figure 6-72.	Notification Recipients . . . . . . . . . . . . .	208
Figure 6-73.	Add Notification Recipients . . . . . . . . . . .	210
Figure 6-74.	Notification Recipients Tables . . . . . . . . . .	210
Figure 6-75.	File Download from Server . . . . . . . . . . . .	213
Figure 6-76.	File Upload to Server . . . . . . . . . . . . . .	216
Figure 6-77.	Active Images . . . . . . . . . . . . . . . . .	218
Figure 6-78.	Copy Files . . . . . . . . . . . . . . . . . . . .	219
Figure 6-79.	Files on File System . . . . . . . . . . . . . . .	221
Figure 6-80.	General Settings . . . . . . . . . . . . . . . .	223
Figure 7-1.	Port Based Authentication . . . . . . . . . . . .	227

Contents 13

Figure 7-2.	Port Based Authentication Table . . . . . . . . .	229
Figure 7-3.	Multiple Hosts . . . . . . . . . . . . . . . . .	231
Figure 7-4.	Multiple Hosts Table . . . . . . . . . . . . . .	233
Figure 7-5.	Authenticated Users . . . . . . . . . . . . . .	235
Figure 7-6.	Authenticated Users Table . . . . . . . . . . .	236
Figure 7-7.	Port Security . . . . . . . . . . . . . . . . . .	238
Figure 7-8.	Port Security Table . . . . . . . . . . . . . . .	239
Figure 7-9.	MAC Based ACL . . . . . . . . . . . . . . . .	241
Figure 7-10.	Add MAC Based ACLs . . . . . . . . . . . . . .	242
Figure 7-11.	ACL Bindings . . . . . . . . . . . . . . . . . .	244
Figure 7-12.	Port Configuration . . . . . . . . . . . . . . . .	247
Figure 7-13.	Port Configuration Table . . . . . . . . . . . . .	249
Figure 7-14.	LAG Configuration . . . . . . . . . . . . . . . .	252
Figure 7-15.	LAG Configuration Table . . . . . . . . . . . . .	254
Figure 7-16.	Storm Control . . . . . . . . . . . . . . . . . .	257
Figure 7-17.	Storm Control Settings Table . . . . . . . . . . .	258
Figure 7-18.	Port Mirroring . . . . . . . . . . . . . . . . . .	261
Figure 7-19.	Static MAC Address Table . . . . . . . . . . . .	264
Figure 7-20.	Dynamic MAC Address . . . . . . . . . . . . .	267
Figure 7-21.	GARP Timers . . . . . . . . . . . . . . . . . .	270
Figure 7-22.	Spanning Tree Global Settings . . . . . . . . . .	274
Figure 7-23.	Spanning Tree Port Settings . . . . . . . . . . .	280
Figure 7-24.	Spanning Tree LAG Settings . . . . . . . . . . .	284
Figure 7-25.	Rapid Spanning Tree (RSTP) settings . . . . . . .	288
Figure 7-26.	MSTP Settings . . . . . . . . . . . . . . . . .	291
Figure 7-27.	MSTP Instance Table . . . . . . . . . . . . . .	292
Figure 7-28.	MSTP Interface Settings . . . . . . . . . . . .	295
Figure 7-29.	MSTP Interface Table . . . . . . . . . . . . . .	297

14 Contents

Figure 7-30.	VLAN Membership . . . . . . . . . . . . . . .	300
Figure 7-31.	VLAN Port Settings . . . . . . . . . . . . . . .	305
Figure 7-32.	VLAN LAG Settings . . . . . . . . . . . . . . .	307
Figure 7-33.	Bind MAC to VLAN . . . . . . . . . . . . . . .	310
Figure 7-34.	GVRP Parameters . . . . . . . . . . . . . . . .	312
Figure 7-35.	Private VLAN . . . . . . . . . . . . . . . . . .	316
Figure 7-36.	Add Private VLAN . . . . . . . . . . . . . . . .	317
Figure 7-37.	PV Ports Table . . . . . . . . . . . . . . . . .	317
Figure 7-38.	LACP Parameters . . . . . . . . . . . . . . . .	320
Figure 7-39.	LAG Membership . . . . . . . . . . . . . . . .	323
Figure 7-40.	Global Parameters . . . . . . . . . . . . . . .	325
Figure 7-41.	Bridge Multicast Group . . . . . . . . . . . . .	327
Figure 7-42.	Add Bridge Multicast Group . . . . . . . . . . .	328
Figure 7-43.	Bridge Multicast Forward All . . . . . . . . . .	331
Figure 7-44.	IGMP Snooping . . . . . . . . . . . . . . . . .	334
Figure 8-1.	Utilization Summary . . . . . . . . . . . . . . .	337
Figure 8-2.	Counter Summary . . . . . . . . . . . . . . . .	339
Figure 8-3.	Interface Statistics . . . . . . . . . . . . . . .	340
Figure 8-4.	Etherlike Statistics . . . . . . . . . . . . . . .	343
Figure 8-5.	GVRP Statistics . . . . . . . . . . . . . . . . .	345
Figure 8-6.	EAP Statistics . . . . . . . . . . . . . . . . . .	349
Figure 8-7.	RMON Statistics . . . . . . . . . . . . . . . .	352
Figure 8-8.	RMON History Control . . . . . . . . . . . . . .	355
Figure 8-9.	RMON History Table . . . . . . . . . . . . . . .	357
Figure 8-10.	RMON Events Control . . . . . . . . . . . . . .	360
Figure 8-11.	RMON Events Log . . . . . . . . . . . . . . . .	362
Figure 8-12.	RMON Alarms . . . . . . . . . . . . . . . . .	364
Figure 8-13.	Add an Alarm Entry Page . . . . . . . . . . . .	365

Contents 15

Figure 8-14.	Port Statistics . . . . . . . . . . . . . . . . . .	368
Figure 8-15.	LAG Statistics . . . . . . . . . . . . . . . . . .	369
Figure 8-16.	CPU Utilization . . . . . . . . . . . . . . . . .	371
Figure 9-1.	Global Settings . . . . . . . . . . . . . . . . .	375
Figure 9-2.	Interface Settings . . . . . . . . . . . . . . . .	377
Figure 9-3.	CoS to Queue . . . . . . . . . . . . . . . . . .	379
Figure 9-4.	DSCP to Queue . . . . . . . . . . . . . . . . .	380

Tables

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 . . . . . .	42
Table 2-3.	PowerConnect 3424 and
	PowerConnect 3448 RJ-45
	Copper based 100BaseT LED Indications . . . . . .	43
Table 2-4.	SFP Port LED Indications . . . . . . . . . . . .	43
Table 2-5.	System LED Indicators . . . . . . . . . . . . . .	44
Table 2-6.	Stacking LED Indications . . . . . . . . . . . .	45
Table 4-7.	Port Default Settings . . . . . . . . . . . . . .	77
Table 5-8.	Interface Components . . . . . . . . . . . . . .	80
Table 5-9.	PowerConnect Port and Stacking Indicators . . .	81
Table 5-10.	Information Buttons . . . . . . . . . . . . . . .	82
Table 5-11.	Device Management Buttons . . . . . . . . . .	82
Table 6-12.	Asset CLI Commands . . . . . . . . . . . . . .	89
Table 6-13.	Clock Setting CLI Commands . . . . . . . . . . .	98
Table 6-14.	Celsius to Fahrenheit Conversion Table . . . . . .	100
Table 6-15.	System Health CLI Command . . . . . . . . . .	100

16 Contents

Table 6-16.	System Health CLI Commands . . . . . . . . . .	104
Table 6-17.	Versions CLI Commands . . . . . . . . . . . .	106
Table 6-18.	Stack Management CLI Commands . . . . . . .	108
Table 6-19.	Reset CLI Command . . . . . . . . . . . . . . .	109
Table 6-20.	SNTP Global Parameters CLI Commands . . . . .	113
Table 6-21.	SNTP Authentication CLI Commands . . . . . . .	116
Table 6-22.	SNTP Server CLI Commands . . . . . . . . . . .	119
Table 6-23.	SNTP Interface Settings CLI Commands . . . . .	121
Table 6-24.	Log Severity Levels . . . . . . . . . . . . . . .	123
Table 6-25.	Global Log Parameters CLI Commands . . . . . .	125
Table 6-26.	RAM Log Table CLI Commands . . . . . . . . . .	127
Table 6-27.	Log File Table CLI Commands . . . . . . . . . .	129
Table 6-28.	Log File Table CLI Commands . . . . . . . . . .	131
Table 6-29.	Remote Log Server CLI Commands . . . . . . . .	134
Table 6-30.	Default Gateway CLI Commands . . . . . . . . .	136
Table 6-31.	IP Interface Parameters CLI Commands . . . . .	139
Table 6-32.	DHCP IP Interface CLI Commands . . . . . . . .	141
Table 6-33.	DNS Server CLI Commands . . . . . . . . . . .	144
Table 6-34.	DNS Domain Name CLI Commands . . . . . . . .	146
Table 6-35.	Domain Host Name CLI Commands . . . . . . . .	148
Table 6-36.	ARP Settings CLI Commands . . . . . . . . . . .	151
Table 6-37.	Copper Cable Test CLI Commands . . . . . . . .	153
Table 6-38.	Fiber Optic Cable Test CLI Commands . . . . . .	155
Table 6-39.	Access Profiles CLI Commands . . . . . . . . .	160
Table 6-40.	Authentication Profile CLI Commands . . . . . .	166
Table 6-41.	Select Authentication CLI Commands . . . . . .	169
Table 6-42.	Password Management Using
	CLI Commands . . . . . . . . . . . . . . . . .	172

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 . . . . .	180
Table 6-46.	TACACS+ CLI Commands . . . . . . . . . . . .	183
Table 6-47.	RADIUS Server CLI Commands . . . . . . . . . .	187
Table 6-48.	SNMP Notification Commands . . . . . . . . . .	191
Table 6-49.	SNMP View CLI Commands . . . . . . . . . . .	195
Table 6-50.	SNMP Access Control CLI Commands . . . . . .	198
Table 6-51.	SNMPv3 User CLI Commands . . . . . . . . . .	201
Table 6-52.	SNMP Community CLI Commands . . . . . . . .	204
Table 6-53.	SNMP Notification Filter CLI Commands . . . . .	207
Table 6-54.	SNMP Community CLI Commands . . . . . . . .	211
Table 6-55.	File Download CLI Commands . . . . . . . . . .	215
Table 6-56.	File Upload CLI Commands . . . . . . . . . . . .	217
Table 6-57.	File Upload CLI Commands . . . . . . . . . . . .	219
Table 6-58.	Copy Files CLI Commands . . . . . . . . . . . .	220
Table 6-59.	Copy Files CLI Commands . . . . . . . . . . . .	222
Table 6-60.	General Settings CLI Commands . . . . . . . . .	224
Table 7-61.	Port Authentication CLI Commands . . . . . . .	230
Table 7-62.	Multiple Hosts CLI Commands . . . . . . . . . .	234
Table 7-63.	Add User Name CLI Commands . . . . . . . . .	236
Table 7-64.	Port Security CLI Commands . . . . . . . . . . .	240
Table 7-65.	MAC-Based ACE CLI Commands . . . . . . . . .	243
Table 7-66.	ACL Binding CLI Commands . . . . . . . . . . .	246
Table 7-67.	Port Configuration CLI Commands . . . . . . . .	250
Table 7-68.	LAG Configuration CLI Commands . . . . . . . .	255
Table 7-69.	Storm Control CLI Commands . . . . . . . . . .	259
Table 7-70.	Port Mirroring CLI Commands . . . . . . . . . .	262

18 Contents

Table 7-71.	Static Address CLI Commands . . . . . . . . . .	266
Table 7-72.	Query and Sort CLI Commands . . . . . . . . . .	269
Table 7-73.	GARP Timer CLI Commands . . . . . . . . . . .	272
Table 7-74.	STP Global Parameter CLI Commands . . . . . .	276
Table 7-75.	STP Port Settings CLI Commands . . . . . . . .	282
Table 7-76.	STP LAG Settings CLI Commands . . . . . . . .	286
Table 7-77.	RSTP Settings CLI Command . . . . . . . . . . .	290
Table 7-78.	MSTP Instances CLI Commands . . . . . . . . .	293
Table 7-79.	MSTP Interface CLI Commands . . . . . . . . .	297
Table 7-80.	VLAN Membership Group CLI Commands . . . . .	301
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 . . . . .	308
Table 7-84.	Binding MAC address to VLANs
	CLI Commands . . . . . . . . . . . . . . . . .	311
Table 7-85.	GVRP Global Parameters CLI Commands . . . . .	313
Table 7-86.	Private VLAN CLI Commands . . . . . . . . . .	318
Table 7-87.	LACP Parameters CLI Commands . . . . . . . .	321
Table 7-88.	LAG Membership CLI Commands . . . . . . . . .	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 . . . .	329
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 . . . . . . .	333
Table 7-94.	IGMP Snooping CLI Commands . . . . . . . . .	335

Contents 19

Table 8-95.	Interface Statistics CLI Commands . . . . . . . .	341
Table 8-96.	Etherlike Statistics CLI Commands . . . . . . . .	344
Table 8-97.	GVRP Statistics CLI Commands . . . . . . . . .	346
Table 8-98.	EAP Statistics CLI Commands . . . . . . . . . .	350
Table 8-99.	RMON Statistics CLI Commands . . . . . . . . .	353
Table 8-100.	RMON History CLI Commands . . . . . . . . . .	356
Table 8-101.	RMON History Control CLI Commands . . . . . .	358
Table 8-102.	Device Event Definition CLI Commands . . . . . .	361
Table 8-103.	Device Event Definition CLI Commands . . . . . .	363
Table 8-104.	Device Alarm CLI Commands . . . . . . . . . .	366
Table 8-105.	Port Statistic CLI Commands . . . . . . . . . . .	369
Table 8-106.	LAG Statistic CLI Commands . . . . . . . . . . .	370
Table 9-107.	CoS to Queue Mapping Table
	Default values . . . . . . . . . . . . . . . . .	373
Table 9-108.	DSCP to Queue Mapping Table
	Default Values . . . . . . . . . . . . . . . . .	374
Table 9-109.	QoS Settings CLI Commands . . . . . . . . . . .	377
Table 9-110.	QoS Interface CLI Commands . . . . . . . . . .	378
Table 9-111.	CoS to Queue Settings CLI Commands . . . . . .	380
Table 9-112.	DSCP Value to Queue CLI Commands . . . . . .	381

20 Contents

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 contains the information needed for installing, configuring, and maintaining 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.

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

w w w . d e l l . c o m | s u p p o r t . d e l l . c o m

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.

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.

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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

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.

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

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

•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.

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

Same	Same	Same
Configuration	Configuration	Configuration

•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	Same
Configuration	Configuration

Default

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

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

Same	Same
Configuration	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.

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Features Overview

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

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

•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."

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".

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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 Media-Dependent Interface (MDI) and the standard wiring for hubs and switches is known as Media-Dependent Interface with Crossover (MDIX).

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

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."

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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.

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