Accton Technology Fast EtherHub 3500 Series Manual de usuario

Fast EtherHub 3500 System

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Installation and User’s Guide

Fast EtherHub 3500 System

Intelligent

Fast Ethernet Stackable Hub

with 12 100BASE-TX Ports;

including SNMP Management Support

No part of this document may be copied or reproduced in any form or by any means without the prior written

consent of Accton Technology Corporation.

Accton makes no warranties with respect to this documentation and disclaims any implied warranties of

merchantability, quality, or fitness for any particular purpose. The information in this document is subject to change

without notice. Accton reserves the right to make revisions to this publication without obligation to notify any person

or entity of any such changes.

Before operating this product, please review the statements on electomagnetic emission interference and safety

compliance in Appendix D.

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No. 1 Creation Road III,

Science-based Industrial Park

Hsinchu 300, Taiwan, R.O.C.

Phone: 886-3-5770-270

FAX: 886-3-5770-267

BBS: 886-3-5770-654

Internet: [email protected]

86$+HDGTXDUWHUV

1962 Zanker Road

San Jose, CA 95112

Phone: 408-452-8900

FAX: 408-452-8988

BBS: 408-452-8828

FAST FAX: 408-452-8811

Accton, EtherHub, SmartWatch, SmartExtender and AccView and are trademarks or registered trademarks of

Accton Technology Corporation. Other trademarks or brand names mentioned herein are trademarks or registered

trademarks of their respective companies.

EH3512I-TX

EH3512M-TX

E1296-R01

150136-101

Package Contents i

Package Contents

Carefully unpack the contents of the package and verify them

against the checklist given below. This checklist applies to all

the Fast EtherHub 3500 Series models unless otherwise specified.

Package Checklist

æFast EtherHub-12i

Intelligent Fast Ethernet Stackable Hub with 12 100BASE-TX Ports

(Model No. EH3512I-TX)

or Fast EtherHub-12mi SNMP

Intelligent Fast Ethernet Stackable Hub with 12 100BASE-TX Ports;

including SNMP Managment Support

(Model No. EH3512M-TX)

æTwo mounting brackets

æFour rubber foot pads

æOne AC power cord

æOne 20 cm FlexBus 3500 stack cable

æInstallation manual

æOwner registration card

Please inform your dealer immediately should there be any

wrong, missing, or damaged parts.

If possible, retain the carton, including the original packing

materials. Use them again to repack the unit in case there is a

need to return it for repair.

@To qualify for product updates and product warranty

registration, fill in the Owner Registration Card and return it

to Accton Technology Corporation.

Quick Installation iii

Quick Installation

Accton’s Fast EtherHub 3500 models each contain 12 Fast

Ethernet (100BASE-TX) RJ-45 ports, one MDI daisy-chain port,

and one slot for an optional connection using 100BASE-TX

(10BASE-T), 100BASE-T4 or 100BASE-FX.

The smart design built into the front display panel and

configure options provide a friendly interface that simplifies

installation and network troubleshooting. If you are already

familiar with basic network operations, you should be able to

install this hub as described below:

1. Unpack the Fast EtherHub 3500 unit.

2. Find a location close to the network devices you need to

connect, and within easy reach of an electrical outlet.

These hubs are suitable for

desktop or rack mounting

3. Mount the hub on a desktop or any other flat surface. If you

are installing multiple hubs, you can stack them on top of

each other (after attaching the foot pads), or install them in a

standard EIA 19-inch rack.

Attach PCs to the station ports

4. Connect any devices that use a standard network interface

to the RJ-45 (MDI-X) station ports (e.g., a workstation,

server or router). Use 100WCategory 5 unshielded twisted-

pair (UTP) or 100Wshielded twisted-pair (STP) cable. Also

be sure that the length of any twisted-pair connection does

not exceed 100 meters. (Refer to Chapter 2 for a more

detailed description of calculating the maximum cable length

permitted between two end nodes.)

Attach each hub in the stack

with FlexBus 3500 stack cable

5. If you are stacking multiple hubs, connect the FlexBus 3500

stack cable between the “Out” and “In” backplane ports on

adjacent hubs. Run a simple chain starting at the Out port on

the top hub in the stack, and ending at the In port on the

bottom hub in the stack. No more than 6 hubs can be

connected via the backplane bus.

Fast EtherHub 3500 System User’s Guide

iv Quick Installation

Attach each hub to one of th

backplane segment

6. Connect each hub to one of the 3 Fast Ethernet segments

embedded in the backplane bus using either on-board

configuration (Chapter 4) or optional network management

software (e.g., AccView/Open). You can leave a hub isolated

from the backplane if required for your network environment

(e.g., to restrict network access for the attached user group).

However, you should be careful to structure your network

connections so that nodes which communicate frequently are

located in the same segment. (Factory default is Segment 1.)

Use the SmartExtender Module t

interconnect different segments i

the stac

7. Bridge the different backplane segments in the Fast Ethernet

3500 stack by running a connection from the optional

100BASE-TX extender module on this hub to any station

port on another hub in the stack that has been assigned to a

different segment. Remember that devices connected to the

switching port exist in a separate segment (and unless also

connected to the FlexBus management channel) cannot be

controlled by a management agent in the stack. When

connecting a hub to the expansion port, the maximum cable

length is 100 meters.

Or interconnect the stack’

segments by attaching the daisy-

chain port to a switch, or the

station ports to a router

8. If you do not have any available SmartExtender Modules,

the different segments in a Fast EtherHub 3500 stack can

also be combined into an interconnected network by running

a cable from the hubs’ daisy-chain ports (i.e., using port

12MDI on hubs attached to the different segments) to a

network interconnection device such a switch; or by running

a cable from the hubs’ station ports (i.e., using ports on hubs

attached to different segments) to a router.

Attach to the extended networ

via the daisy-chain por

9. You can also attach the overall stack to a network intercon-

nection device via the daisy-chain port (when connecting to

a switch) or via a station port (when connecting to a router).

Run straight-through twisted-pair cable from the hub to the

other device. When attaching to a switch, run cable from the

MDI daisy-chain port on this hub to any (MDI-X) station

port on the switch (or vice versa).

Note: When using the 12MDI daisy-chain port, remember that port

12X cannot be used.

Fast EtherHub 3500 System User’s Guide

Quick Installation v

Or attach to the extended

network via the SmartExtender

Module

The SmartExtender Module can

be used to attach to another

network device that uses a

different media type

10.If an optional SmartExtender Module is installed in the

expansion port, it can be used to make a bridged connection

from this hub to another network device using 100BASE-TX

(10BASE-T), 100BASE-T4 or 100BASE-FX media types.

When connecting a node to the expansion port, the maxi-

mum cable length is 100 meters for twisted-pair cable, and 2

kilometers for fiber. (Refer to Chapter 2 for a more detailed

description of calculating the maximum length permitted for

fiber optic cable.)

Attach the SmartExtender Module

to a hub, switch, bridge or router

You can use the extender module to bridge this hub to

another Ethernet or Fast Ethernet hub or stack; or to attach it

to a network interconnection device, such as a switch, bridge

or router. However, when using the expansion port to cascade

to other networking devices outside the stack, note that the

maximum cascade length should be limited to 7 devices.

Transmission speed is automatically

set for any connection made to the

SmartExtender Module

For integrating legacy networks, the 100BASE-TX extender

module provides for connection via either 100BASE-TX or

10BASE-T. All 100BASE entender modules use auto-sensing

to set the transmission speed at 10 or 100 Mbps. In other words,

this module can correctly set the transmission speed for the

attached device, even if it does not support auto-negotiation.

Transmission mode automatically

configured for the connected device

only if it supports auto-negotiation

Use half duplex for a

shared collision domain

The extender modules, except for 100BASE-T4, support both

half-duplex and full-duplex communications. However, for

this hub to correctly set the transmission mode, the attached

device must also support auto-negotiation. If auto-negotiation

fails, the transmission mode defaults to half duplex. If this

setting is not suitable, then the transmission mode must be

manually configured via on-board configuration (Chapter 4)

or optional network management software (e.g., AccView/Open).

To reactivate auto-negotiation, just unplug a connection from

the port on the hub and plug it in again. Remember that full-

duplex mode can only be used for a dedicated link, such as that

provided by the SmartExtender Module. When connecting to a

shared collision domain (i.e., another hub) set the transmission

mode for half duplex.

Fast EtherHub 3500 System User’s Guide

vi Quick Installation

Difference in connecting to the

extended network via the daisy-

chain port or SmartExtenter Module

The Fast EtherHub 3500 stack can be connected to a larger

network using any device such as a switch, bridge or router.

Depending on your network configuration, you may attain

better performance by making a direct connection from the

daisy-chain port (or a station port) on this hub to an

interconnection device. Making a connection from an

extender module may introduce slightly more delay.

Check your connections

11. Verify network communications by ensuring that -

• you have made all the necessary connections

• you can access any connected resources

• the hub’s indicators are functioning properly

If you encounter any problems in installing the Fast EtherHub

3500 system, refer to Chapter 2 for a detailed description of

installation procedures, or to Appendix A for help in

troubleshooting.

About this Guide vii

About this Guide

This guide is designed for the experienced network installer.

It describes how to install and operate Accton’s Fast EtherHub

3500 system. After reading this manual, you should be able to

use the front display panel and configure options to manage all

your network connections.

This manual covers the following topics:

Chapter 1 - Product Overview

Brief description of Fast Ethernet, followed by a description of

this hub and a summary of its important features and

specifications.

Chapter 2 - Installing the System

Installing a Fast EtherHub 3500 and making basic network

connections. Also includes a description of significant

components on the hub including ports and indicators.

Chapter 3 - Setting up Network Connections

Shows sample network configurations for a local area network.

Chapter 4 - Configuring the System

Describes how to manage the system via the on-board

configuration program.

Chapter 5 - Hardware Reference

Detailed description of indicator panel and ports.

Appendices - Troubleshooting, cable assignments, and product specifications.

Contents

Contents ix

Chapter 1: Product Overview 1-1

Introduction to Fast Ethernet 1-1

Brief Description of the Fast EtherHub 3500 System 1-1

Distinguishing Factors of Fast EtherHub 3500 System 1-5

Basic Features of Fast EtherHub 3500 System 1-6

Data Switching with the SmartExtender Modules 1-9

Switching Technology 1-9

Configuration Options for the SmartExtender Modules 1-9

Switching Methods 1-10

Chapter 2: Installing the System 2-1

Pre-Installation Requirements 2-1

Hardware Installation 2-2

Stacking Hubs without a Rack 2-2

Mounting Hubs in a Rack 2-3

Connecting the Hub System 2-4

Making a Connection via an MDI-X Station Port 2-4

Connecting to the Stack’s Backplane 2-5

Making a Connection via the MDI Daisy-Chain Port 2-6

Connecting to a SmartExtender Module 2-6

Installing a Backup Power Supply 2-11

Powering on the Hub 2-12

Diagnostic Tests 2-12

Hot Remove 2-13

Configuring a Manageable Stack 2-14

Installing an SNMP Backup Agent 2-14

Verifying Port Status 2-15

Verifying System Operation 2-15

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