Allied Telesis AT-8326GB User Manual

Fast Ethernet

Switch

AT-8326GB

K

Installation

Guide

PN 613-50282-00 Rev A

Copyright Ó 2002 Allied Telesyn, Inc.

960 Stewart Drive Suite B, Sunnyvale, CA 94085 USA

All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc.

All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.

Allied Telesyn, Inc. reserves the right to make changes in specifications and other information contained in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesyn, Inc. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesyn, Inc. has been advised of, known, or should have known, the possibility of such damages.

Electrical Safety and Emission

Statement

Standards: This product meets the following standards.

U.S. Federal Communications Commission

RADIATED ENERGY

Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Note: Modifications or changes not expressly approved by the manufacturer or the FCC can void your right to operate this equipment.

Canadian Department of Communications

This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

RFI Emission	FCC Class A, EN55022 Class A, CISPR22 Class A (VCCI), AS/NZS3548 (C-
	TICK), EN61000-3-2, EN61000-3-3 1

Warning: In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. 2

Immunity	EN55024 3
Electrical Safety	UL 1950 (UL/cUL)), EN60950 4
Laser	EN60825 5

Important: Appendix C contains translated safety statements for installing this equipment. When you see the , go to Appendix C for the translated safety statement in your language.

Wichtig: Anhang C enthält übersetzte Sicherheitshinweise für die Installation dieses Geräts. Wenn Sie sehen, schlagen Sie in Anhang C den übersetzten Sicherheitshinweis in Ihrer Sprache nach.

Vigtigt: Tillæg C indeholder oversatte sikkerhedsadvarsler, der vedrører installation af dette udstyr. Når De ser symbolet , skal De slå op i tillæg C og finde de oversatte sikkerhedsadvarsler i Deres eget sprog.

Belangrijk: Appendix C bevat vertaalde veiligheidsopmerkingen voor het installeren van deze apparatuur. Wanneer u de ziet, raadpleeg Appendix C voor vertaalde veiligheidsinstructies in uw taal.

Important : L'annexe C contient les instructions de sécurité relatives à l'installation de cet équipement. Lorsque vous voyez le symbole , reportez-vous à l'annexe C pour consulter la traduction de ces instructions dans votre langue.

Tärkeää: Liite C sisältää tämän laitteen asentamiseen liittyvät käännetyt turvaohjeet. Kun näet -symbolin, katso käännettyä turvaohjetta liitteestä C.

Importante: l’Appendice C contiene avvisi di sicurezza tradotti per l’installazione di questa apparecchiatura. Il simbolo , indica di consultare l’Appendice C per l’avviso di sicurezza nella propria lingua.

Viktig: Tillegg C inneholder oversatt sikkerhetsinformasjon for installering av dette utstyret. Når du ser , åpner du til Tillegg C for å finne den oversatte sikkerhetsinformasjonen på ønsket språk.

Importante: O Anexo C contém advertências de segurança traduzidas para instalar este equipamento. Quando vir o símbolo , leia a advertência de segurança traduzida no seu idioma no Anexo C.

Importante: El Apéndice C contiene mensajes de seguridad traducidos para la instalación de este equipo. Cuando vea el símbolo, vaya al Apéndice C para ver el mensaje de seguridad traducido a su idioma.

Obs! Bilaga C innehåller översatta säkerhetsmeddelanden avseende installationen av denna utrustning. När du ser , skall du gå till Bilaga C för att läsa det översatta säkerhetsmeddelandet på ditt språk.

iii

Table of Contents

Preface ......................................................................................................................................................................................................................	6
How This Guide is Organized .............................................................................................................................................................................	6
Document Conventions ......................................................................................................................................................................................	7
Where to Find Web-based Guides ...................................................................................................................................................................	8
Contacting Allied Telesyn ...................................................................................................................................................................................	9
Telephone Support .......................................................................................................................................................................................	9
For Sales or Corporate Information ........................................................................................................................................................	9
Management Software Updates ....................................................................................................................................................................	10
Chapter 1
Product Description .........................................................................................................................................................................................	11
Summary of Features ..........................................................................................................................................................................................	11
Location of Components ...................................................................................................................................................................................	12
Hardware Features ..............................................................................................................................................................................................	13
Twisted Pair Ports........................................................................................................................................................................................	13
Gigabit Interface Converter (GBIC) Slots.............................................................................................................................................	17
Stacking Ports ...............................................................................................................................................................................................	18
System LEDs ..................................................................................................................................................................................................	19
Stack ID LEDs.................................................................................................................................................................................................	20
10/100 Mbps Port LEDs .............................................................................................................................................................................	21
10/100/1000 Mbps Port LEDs..................................................................................................................................................................	22
Gigabit Connector LEDs............................................................................................................................................................................	23
RS-232 Terminal Port..................................................................................................................................................................................	24
AC Power Connector..................................................................................................................................................................................	25
Software Features ................................................................................................................................................................................................	26
AT-S41 Management Software ..............................................................................................................................................................	26
Spanning Tree Protocol (STP) .................................................................................................................................................................	29
Tagged and Port-based VLANs...............................................................................................................................................................	30
Quality of Service (QoS).............................................................................................................................................................................	30
IGMP Snooping ............................................................................................................................................................................................	31
Dynamic Host Configuration Protocol (DHCP).................................................................................................................................	32
Port Monitoring............................................................................................................................................................................................	32
Port Trunking ................................................................................................................................................................................................	32
Port Security ..................................................................................................................................................................................................	35
A Few Basics to Ethernet Switching ..............................................................................................................................................................	36
MAC Address Table.....................................................................................................................................................................................	36
Duplex Mode.................................................................................................................................................................................................	37
Store and Forward.......................................................................................................................................................................................	37

4

Backpressure and Flow Control .............................................................................................................................................................	37
Network Topologies ............................................................................................................................................................................................	39
Power Workgroup Topology...................................................................................................................................................................	39
Collapsed Backbone - Hub Topology...................................................................................................................................................	40
Switch Stacking Topology........................................................................................................................................................................	41
Chapter 2
Installation ............................................................................................................................................................................................................	42
Installation Safety Precautions ........................................................................................................................................................................	43
Selecting a Site for the Switch .........................................................................................................................................................................	44
Required Cables ....................................................................................................................................................................................................	45
Unpacking the Switch ........................................................................................................................................................................................	46
Installing the Switch on a Desktop ................................................................................................................................................................	47
Installing the Switch in a Rack .........................................................................................................................................................................	48
Installing an Optional GBIC Module ..............................................................................................................................................................	50
Creating a Switch Stack .....................................................................................................................................................................................	52
Cabling the Switch ...............................................................................................................................................................................................	55
Powering On the Switch ....................................................................................................................................................................................	58
Starting a Local Management Session .........................................................................................................................................................	59
Warranty Registration .........................................................................................................................................................................................	62
Chapter 3
Troubleshooting ................................................................................................................................................................................................	63
Appendix A
Technical Specifications .................................................................................................................................................................................	67
Physical Specifications .......................................................................................................................................................................................	67
Environmental Specifications ..........................................................................................................................................................................	67
Power Specifications ...........................................................................................................................................................................................	67
Safety and Electromagnetic Emissions Certifications .............................................................................................................................	68
Standards ................................................................................................................................................................................................................	68
SNMP Support .......................................................................................................................................................................................................	68
Appendix B
Default Switch Settings ..................................................................................................................................................................................	69
Appendix C
Translated Electrical Safety and Emission Information ..................................................................................................................	71

5

Preface

This guide contains instructions on how to install the stackable

AT-8326GB Fast Ethernet switch.

How This Guide is Organized

This manual contains the following chapters and appendices:

Chapter 1, Hardware Description, describes the features and components of the switch.

Chapter 2, Installation, contains the installation instructions.

Chapter 3, Troubleshooting, provides information on how to resolve common problems that might occur with the switch.

Appendix A, Technical Specifications, contains the switch’s technical specifications.

Appendix B, Switch Default Settings, lists the factory default settings.

Appendix C, Translated Electrical Safety and Emission Information, contains translations of the warnings and cautions in the manual.

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AT-8326GB Installation Guide

Document Conventions

This document uses the following conventions to highlight important information.

Note

Notes provide additional information.

Warning

Warnings inform you that performing or omitting a specific action may result in bodily injury.

Caution

Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.

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AT-8326GB Installation Guide

Where to Find Web-based Guides

The Allied Telesyn web site at www.alliedtelesyn.com contains the most recent documentation for all Allied Telesyn International products. All documents are available as PDF files. You can either view the documents online or download them onto a local workstation or server.

Once you have installed the switch, refer to following manual for instructions on how to manage and configure the unit. The manual is available from the Allied Telesyn web site:

AT-S41 Management Software User’s Guide

PN 613-50283-00

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AT-8326GB Installation Guide

Contacting Allied Telesyn

Telephone

Support

To contact Technical Support by telephone, find your country or region in the table below.

United States and Canada		Europe, Africa, and the Middle
Tel:	1 800 428 4835 (option 4)	East
		Tel:	00 800 287 877 67* or
			[phone]
		(Finland only: Tel: [phone])
Asia and Southeast Asia		Australia
Tel:	(++65) 381 5612	Tel:	1 800 000 880
New Zealand
Tel:	0800 45 5782

For Sales or Corporate Information

(* Valid in Austria, Belgium, France, Germany, Ireland, Italy, Luxembourg, The Netherlands, Norway, Sweden, Switzerland and the United Kingdom. For other European countries not listed here, ring [phone].)

You can also contact Technical Support online at: http://kb.alliedtelesyn.com

Allied Telesyn, Inc.

19800 North Creek Parkway,

Suite 200

Bothell, WA 98011

Tel: [phone]

Fax: [phone]

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AT-8326GB Installation Guide

Management Software Updates

Allied Telesyn periodically updates the management software programs for our managed products. To obtain a copy of an updated management program, you can download the software either from our web site or our FTP server at ftp.alliedtelesyn.com. To use the FTP server, enter ‘anonymous’ for the user name when you log in and your e-mail address for the password.

10

Chapter 1

Product Description

The AT-8326GB is a stackable Layer 2 Fast Ethernet switch. It offers a wide range of features and capabilities, all designed to simplify the task of creating and maintaining a Fast Ethernet network.

Summary of Features

G24 10/100Base-TX ports with RJ-45 connectors

GTwo 10/100/1000Base-T ports with RJ-45 connectors

GAuto-MDI/MDI-X on all twisted pair ports

GAuto-Negotiation for speed and duplex mode (IEEE 803.3ucompliant)

GTwo slots for Gigabit Interface Converter modules

GTwo stacking ports

GPort trunking and port monitoring

GPort security

GDynamic Host Configuration Protocol

GInternet Group Management Protocol snooping

GAT-S41 management software

GPort-based and tagged VLANs (IEEE 802.1Q-compliant)

GSpanning tree protocol (IEEE 802.1d-compliant)

GQuality of Service (IEEE 802.1p-compliant)

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AT-8326GB Installation Guide

Location of Components

Figure 1 illustrates the front panel of the AT-8326GB Fast Ethernet

Switch.

			GBICSlots
	GIGA
	LNK/ACT
	FDX/COL
	STACK ID		RS-232
	GIGA
FAULT	LNK/ACT
PWR	FDX/COL
System and Port LEDs		10/100Base-TX Ports	RS232
			10/100/1000Base-T Ports Terminal Port

Figure 1 AT-8326GB Front Panel

Figure 2 illustrates the back panel.

STACK IN STACK OUT

100-240 VAC

Stacking Ports AC Power Connector

Figure 2 Back Panel

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AT-8326GB Installation Guide

Hardware Features

The following sections describe these hardware features of the AT8326GB Fast Ethernet switch:

	G 10/100Base-TX and 10/100/1000Base-T Ports
	G Gigabit Interface Converter (GBIC) Slots
	G Stacking Ports
	G System LEDs
	G Stack ID LEDs
	G Port LEDs
	G Gigabit Connector LEDs
	G RS-232 Terminal Port
	G AC Power Connector
Twisted Pair
Ports			10/100/1000Base-T Ports

10/100Base-TX Ports

Figure 3 Twisted Pair Ports

The AT-8326GB Fast Ethernet switch features 24 10/100 Mbps twisted pair ports and two 10/100/1000 Mbps twisted pair ports. The features of the twisted pair ports are described below.

Type of Connector

All of the twisted pair ports feature RJ-45 connectors. (For the port pinout details, refer to RJ-45 Port Pinouts on page 15.)

Speed

The 10/100Base-TX ports are capable of 10 megabits per second (Mbps) or 100 Mbps speeds. The 10/100/1000Base-TX ports are capable of 10 Mbps, 100 Mbps, or 1000 Mbps speeds. You can set the port speed manually or, since the ports are IEEE 802.3u Auto-Negotiation compliant, you can allow the switch to set each port’s speed automatically. With

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AT-8326GB Installation Guide

Auto-Negotiation, the switch automatically matches the highest possible common speed between each switch port and each end node. For example, if an end node is capable of only 10 Mbps, the switch sets the port connected to the end node to 10 Mbps.

Note

Auto-Negotiation is activated as the default on all of the ports on the switch. To deactivate Auto-Negotiation and set the speeds manually, refer to the AT-S41 Management Software User’s Guide.

Maximum Distance

Each twisted pair port has a maximum operating distance of 100 m (328 ft).

Type of Cabling

For 10 Mbps operation, Category 3 or better 100 ohm shielded or unshielded twisted pair cabling is required. For 100 or 1000 Mbps operation, Category 5 and Enhanced Category 5 (5E) 100 ohm shielded or unshielded twisted pair cabling is required.

Auto-MDI

All of the twisted pair ports on the switch are auto-MDI and IEEE 802.3ab-compatible. They automatically configure themselves as either MDI or MDI-X. This feature allows you to use either straight-through or cross-over twisted pair cables to connect devices to the ports.

Duplex Mode

Each twisted pair port on the switch can operate in either halfor fullduplex mode. The twisted pair ports are IEEE 802.3u-compliant and will Auto-Negotiate the duplex mode setting. If the end node connected to a twisted pair port on the switch is capable of full-duplex operation, the switch sets the port to full-duplex. If the end node is capable of only halfduplex, the port is set to half-duplex.

If desired, Auto-Negotiation on one or all of the twisted pair ports can be disabled so that you can set the duplex mode manually through the switch’s management software.

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AT-8326GB Installation Guide

RJ-45 Port Pinouts

Figure 4 illustrates the pin layout to an RJ-45 connector and port.

1	8	8
		1

Figure 4 RJ-45 Connector and Port Pin Layout

Table 1 lists the RJ-45 pin signals when a twisted pair port is operating in the MDI configuration.

	Table 1 MDI Pin Signals (10/100 Mbps)
Pin		Signal
1		TX+
2		TX-
3		RX+
6		RX-

Table 2 lists the RJ-45 port pin signals when a twisted pair port is operating in the MDI-X configuration.

	Table 2 MDI-X Pin Signals (10/100 Mbps)
Pin		Signal
1		RX+
2		RX-
3		TX+
6		TX-

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AT-8326GB Installation Guide

Table 3 lists the RJ-45 connector pins and their signals when a 10/100/ 1000 Mbps twisted pair port is operating at 1000 Mbps.

Table 3 1000 Mbps Pin Signals

Pin	Pair	Signal
1	1	TX and RX+
2	1	TX and RX-
3	2	TX and RX+
4	2	TX and RX+
5	3	TX and RX-
6	3	TX and RX-
7	4	TX and RX+
8	4	TX and RX-

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AT-8326GB Installation Guide

Gigabit

Interface

Converter

(GBIC) Slots

RS-232

Figure 5 GBIC Slots

The AT-8326GB Fast Ethernet switch has two GBIC slots on the front panel, which correspond to Ports 25 and 26. Each slot can accommodate one optional GBIC module.

A GBIC module is a gigabit (1000Base) transceiver. GBIC modules can be used to extend the distance of your network, build a high-speed backbone network, or connect additional nodes to the network, such as high-speed servers. Figure 6 shows an example of a fiber optic GBIC module.

Figure 6 Example of a GBIC Module

Note

Ports 25 and 26 can each support only one medium type (i.e., twisted pair or GBIC) at a time. For example, if you install a GBIC for Port 25, you cannot use the corresponding twisted pair port.

In order to use Port 25 or 26 with a GBIC module, you must change the port setting in the management software to GBIC instead of twisted pair. For instructions, refer to the AT-S41 Management Software User’s Guide.

The AT-8326GB Gigabit Ethernet Switch supports the AT-G8 series GBIC modules: SX, LX, LX25, LX40, LX75.

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AT-8326GB Installation Guide

Stacking Ports

STACK IN

STACK OUT

Stacking Ports

Figure 7 Stacking Ports

There are two stacking ports on the back of the switch (Figure 7). The ports are used to connect AT-8326GB switches to form a logical switch. A logical switch consists of two or more individual switches that function as one unit. This feature offers the following benefits:

GStacking allows you to build a switch that is customized to the needs and requirements of your network.

GStacking simplifies network management. Rather than having to mange the switches individually, you can manage all of the switches as one unit.

GStacking allows you to manage multiple switches from one management session. All of the switches in a stack can be managed from one management session through the master switch of the switch stack.

GStacking switches reduces the number of IP addresses you need to assign to the switches you want to manage, since you can use one IP address for all of the switches in a switch stack.

Up to six AT-8326GB switches can be stacked together in a daisy-chain stacking configuration. Star and redundant path configurations will not work.

A stack does not require any additional hardware other than the switches and the LVDS stacking cable that comes with the units.

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AT-8326GB Installation Guide

System LEDs

AT-8326GB

24 + 2G Managed Switch

STACK ID

FAULT

PWR

		System LEDs
		Figure 8 System LEDs
	The system LEDs on the front panel display general status information
	about the entire switch. The system LEDs are defined in Table 4.
		Table 4 System LEDs
LED	State	Description
PWR	Green	System power is ON.
	OFF	System power is OFF.
FAULT	Green	The switch or management software has malfunctioned.
		(Refer to Chapter 3, Troubleshooting on page 60 for
		instructions on how to determine and repair the problem.)
	Flashing	The switch is loading its operating software, running
	Green	diagnostic tests, writing messages to FLASH, or
		downloading files using XMODEM.

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AT-8326GB Installation Guide

Stack ID LEDs

	AT-8326GB	GIGA
		LNK/ACT
	24 + 2G Managed Switch
		FDX/COL
		STACK ID
		GIGA
	FAULT	LNK/ACT
	PWR	FDX/COL

Stack ID LEDs

Figure 9 Stack ID LEDs

The stack ID LEDs indicate the switch’s position in a switch stack. Since you can stack up to six AT-8326GB switches, there are six stack ID LEDs. For instructions on how to create a switch stack, refer to Creating a Switch Stack on page 52.

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AT-8326GB Installation Guide

10/100 Mbps

Port LEDs

	AT-8326GB	GIGA
		LNK/ACT
	24 + 2G Managed Switch
		FDX/COL
		STACK ID
		GIGA
	FAULT	LNK/ACT
	PWR	FDX/COL

Port LEDs

Figure 10 Port LEDs

The 10/100 Mbps port LEDs on the front panel display port status information for Ports 1-24. Each 10/100 Mbps port has two LEDs.

Each port has a LNK/ACT LED which displays the speed of an established link and whether or not there is any activity on the link.

Each port also has an FDX/COL LED. This LED displays the duplex mode of the port and whether or not there are any collisions occurring on the port.

Table 5 describes the 10/100Base-TX port LEDs.

Table 5 10/100 Mbps Port LEDs

LED	State	Description
LNK/ACT	Steady Green	A 100 Mbps link with no activity.
	Flashing Green	A 100 Mbps link with activity.
	Steady Yellow	A 10 Mbps link with no activity.
	Flashing Yellow	A 10 Mbps link with activity.
	OFF	No link has been established.
FDX/COL	Green	The port is in full-duplex mode.
	Yellow	The port is in half-duplex mode and no data colli-
		sions are occurring on the port.
	Flashing Yellow	The port is in half-duplex mode with collisions.

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AT-8326GB Installation Guide

10/100/1000 Mbps Port LEDs

The 10/100/1000 Mbps port LEDs on the front panel display port status information for Ports 25 and 26. Each 10/100/1000 Mbps port has three LEDs.

Like the 10/100 Mbps ports, the 10/100/1000Mbps ports have the same LNK/ACT and FDX/COL LEDs that display status information when the port is operating at 10/100 Mbps speeds. The 10/100/1000 Mbps ports have an additional LED called the GIGA LED that displays the LNK/ACT status information when the port is operating at 1000 Mbps speeds.

Table 6 describes the 10/100/1000 Mbps port LEDs.

Table 6 10/100/1000 Mbps Port LEDs

LED	State	Description
GIGA	Steady Green	A 1000 Mbps link with no activity.
	Flashing Green	A 1000 Mbps link with activity.
	OFF	No 1000 Mbps link has been established.
LNK/ACT	Steady Green	A 100 Mbps link with no activity.
	Flashing Green	A 100 Mbps link with activity.
	Steady Yellow	A 10 Mbps link with no activity.
	Flashing Yellow	A 10 Mbps link with activity.
	OFF	No 10/100 Mbps link has been established.
FDX/COL	Green	The port is in full-duplex mode.
	Yellow	The port is in half-duplex mode and no data colli-
		sions are occurring on the port.
	Flashing Yellow	The port is in half-duplex mode with collisions.

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AT-8326GB Installation Guide

Gigabit

Connector LEDs

RS-232

Connector LEDs

Figure 11 Gigabit Connector LEDs

Ports 25 and 26 each have two connector LEDs on the front panel that indicate which connector type is being used for each port: the RJ-45 or the GBIC. The connector LEDs for each port are located to the left of the RJ-45 connectors and to the right of the GBIC slots.

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AT-8326GB Installation Guide

RS-232

Terminal Port

RS-232

Terminal Port

Figure 12 RS-232 Terminal Port

The RS-232 Terminal Port is used to establish a local (out-of-band) management session with the switch. Using the port, you can access the switch’s management software and configure the switch’s operating parameters.

You establish a local management session by connecting either a VT100 terminal or a personal computer with a terminal emulation program to the port.

Note

You are not required to manage an AT-8326GB Fast Ethernet switch. The default switch settings may be sufficient for your network, in which case you can use the unit as an unmanaged switch. For the switch’s default settings, refer to Default Switch Settings on page 69.

The RS-232 Terminal Port has a DB-9 female connector and uses a null modem management cable.

The default settings for the RS-232 Terminal Port are:

GEmulation mode: VT100

GData rate: 9600

GData bits: 8

GParity: None

GStop bits: 1

GFlow control: None

G Key mode: Terminal

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AT-8326GB Installation Guide

AC Power

Connector

100-240 VAC

Figure 13 AC Power Connector

The switch has a single AC power supply socket on the back panel, which has autoswitch AC inputs. Refer to the Technical Specifications on page 67 for the input voltage range. To power ON or OFF the switch, you connect or disconnect the power cord.

25