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3Com PS Hub 40 User Manual

3Com PS Hub 40
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http://www.3com.com/
SuperStack
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II PS Hub
User Guide
3C16405
PS Hub 40 12-port
3C16406
PS Hub 40 24-port
3C16450
PS Hub 50 24-port
Part No. DUA1640-5AAA02
Published July 1997

Table of Contents

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3Com PS Hub 40 Specifications

General IconGeneral
Data Transfer Rate10 Mbps
Form FactorDesktop
CompatibilityIEEE 802.3
Power SupplyExternal power adapter
TypeEthernet Hub

Summary

1 About the PS Hub

Features

The PS Hub 40 and PS Hub 50 share many features.

Management Features

Complete SmartAgent™ management which is built into each hub.

2 How the PS Hubs Differ

Segment Switch

The segment switch is an additional part of the PS Hub 50 which links the stack’s four cascaded segments.

3 Using the PS Hub

LEDs and Ports

Figure 3-1 shows the hub’s diagnostic LEDs and easy to use ports.

Connecting Workstations to Your Hub

This section describes how to connect workstations to the hub using the 10BASE-T RJ45 ports.

Connecting PS Hubs Together (Stacking)

You can increase the number of ports in your network by connecting additional PS Hub 40 and PS Hub 50 units.

4 Load Balancing

Overview

The PS Hub has a very useful feature called load balancing.

How Does Load Balancing Work?

The load balancing feature monitors the traffic levels in the stack.

5 Managing the PS Hub

Why Manage Your Stack?

With management, you can change and view the way the stack or network operates.

How You Can Manage Your Stack

A stack of PS Hubs is treated as a single manageable entity, and the management is distributed.

Command Line Interface

The PS Hub’s Command Line Interface (CLI) is a simple text-based user interface.

Requirements for Managing Over the Network

When managing your stack over the network, you must remember that (regardless of your method of management).

IP Addresses

If you are uncertain about what IP addresses to assign your equipment, contact your network administrator.

Command Line Interface (CLI)

The CLI allows you to configure a limited set of parameters for the hub.

Web Interface

You can manage the PS Hub using its web interface.

Quick Config Manager

You can manage the PS Hub using Quick Config Manager.

6 Using the Command Line Interface

Accessing the CLI

By default, the hub automatically configures the baud rate of its console port.

Default User Names and Passwords

Table 6-1 shows the default users that can access the hub and their level of access.

Changing the Password

We recommend that setting a password is the first task you carry out on the hub.

Setting the IP Configuration

Before you can manage the hub over the network, you must assign it an IP address and subnet mask.

Resetting the Stack

Resetting the stack simulates powering off and powering on the stack.

Initializing the Stack

Initializing the stack causes it to return to its factory default settings.

7 Management Using the Web Interface

Accessing the Web Interface

You can access the web interface for the stack either through the console port or over the network.

Management Address

This page specifies a unique IP address for the stack.

Port Setup

This page specifies the port state (enable or disable), link state, partition state.

Initialize

This page is used to initialize the stack.

Load Balancing

This page is used to initiate the load balancing feature in the stack.

Reset

This page is used to reset the stack.

Software Upgrade

This page is used to upgrade the management software on the hubs in the stack.

8 Problem Solving

Isolating a Problem

A good way of isolating a problem is to see whether it occurs on a particular port only.

Solving Problems With the Hub

Check your power cord connection. If the connection is secure and there is still no power.

Solving Problems With the Command Line Interface

The initial Login prompt does not display. Check that your terminal or terminal emulator is correctly configured.

Solving Problems With the Web Interface

The web browser cannot access the stack. Check that the stack’s IP address, subnet mask and default router are correctly configured.

Solving Problems With an SNMP Network Management Application

The SNMP network management application cannot access the stack. Check that the stack’s IP address, subnet mask and default router are correctly configured.

A Dimensions, Standards and Cabling

Cabling

This section shows the pin-outs for the various cables that are used with the PS Hub.

B Management Using Quick Config Manager

Installing Quick Config Manager and the Load Balancing Tool

This section has information on what you need to install Quick Config Manager.

Selecting Your Management Access Method (Windows ‘95 and Windows NT only)

Windows ‘95 and Windows NT allow you to manage the stack over the network using Quick Config Manager.

Accessing the Stack

The PS Hub uses community strings as a security measure, to check management access to the stack.

Giving the Stack an IP Address

You can configure the stack with an IP address and other address information.

Configuring Segments

You can use Quick Config Manager to set up the segments within the stack to create workgroups.

Load Balancing

The PS Hub has a load balancing feature which you can use to move the ports between the segments.

Fixing and Unfixing Segments and Ports

You can fix segments and ports so that they are not moved by load balancing.

Performing Load Balancing

You can control many areas of the load balancing feature, including invoking the feature manually.

Enabling or Disabling the Automatic Load Balancing Feature

To enable or disable the automatic load balancing feature:

Upgrading a Stack

In the future, an upgrade may be issued which enhances the functionality of the PS Hub.

Solving Problems With Quick Config Manager

You cannot access the hub over a serial connection for the first time.

C Serial Web Utility

Installing the Serial Web Utility

The serial web utility can be installed on to a management station that already has other Transcend management applications installed on it.

Using the Serial Web Utility

Every time you want to access the web interface through a serial link, make your management connection.

Solving Problems With the Serial Web Utility

If you are unable to connect to the hub’s web interface, it may be that the hub is not turned on.

D Agent Upgrade Utility

Solving Problems With the Agent Upgrade Utility

If you have any problems using the upgrade utility, use the following actions to solve your problems.

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