3Com SuperStack II 3C16611 User Manual

The SuperStack® II Dual Speed Hub 500 is an easy-to-use, 10/100
autosensing manageable and stackable hub (repeater). It is ideal for
users that want the power of Fast Ethernet and the flexibility to connect
10Mbps devices (workstations and other equipment) in the same hub or
stack.
The Dual Speed Hub 500 has 12 or 24 shielded RJ45 10/100 autosensing
ports on the front panel which can both be used to connect 10BASE-T
(Ethernet) or 100BASE-TX (Fast Ethernet) devices to the hub. There are
two segments (10Mbps and 100Mbps) in the hub, which are linked by a
switch, so your 10Mbps and 100Mbps workstations and equipment can
communicate.
The hub also has two transceiver module slots that can be fitted with a
Management Module, or 3Com 10Mbps or 100Mbps modules to provide
you with additional types of network connection. For information on
what modules can be used, refer to the “ Products ” section in this guide.
The Dual Speed Hub 500 comes with:
■
One power cord for use with the Dual Speed Hub 500
■
Four self-adhesive rubber pads
■
Mounting kit
■
A Warranty Registration card for you to fill out and return
The Dual Speed Hub 500 is suited for office use where it can be free
standing, wall-mounted, or rack-mounted (in a wiring closet or
equipment room).
The unit can be powered either from the AC mains supply, or through
an optional 3Com SuperStack II Advanced Redundant Power System
(3C16070). Contact your supplier for details.
To provide maximum flexibility and expandability, the Dual Speed
Hub 500 can be used with a range of other equipment:
■
Using Cascade Cables, you can connect up to eight Dual Speed
Hub 500 units to form a logical repeater (called a stack ), providing
up to 208 ports per stack. The 10Mbps and 100Mbps segments in
each hub are connected by the Cascade Cables. Using additional
Hot Swap Cascade Units, you can add resilience to the cascade
connections so that you can remove units at any time without it
affecting communication across the other units in the stack.
■
Using the MDI switch on the front panel, you can connect a
10BASE-T or 100BASE-TX unit or stack to the Dual Speed Hub 500.
■
Using a Dual Speed Hub – PS Hub Cascade Converter Kit, you can
stack Dual Speed Hub 500 units with existing SuperStack II
PS Hubs. The whole stack can be managed as a single entity. The
maximum number of units that you can connect this way to form
a stack is eight.
Refer to the “ Products ” section in this guide for information on obtaining
these products.
I
NTRODUCTION
1
SuperStack® II Dual Speed Hub 500
12-Port TP (3C16610) and 24-Port TP (3C16611)
User Guide
DUA1661-0AAA02

3Com SuperStack II 3C16611 Specifications

General

Product Type	Switch
Model	3C16611
Layer	Layer 2
Form Factor	Rack-mountable
MAC Address Table Size	8000 entries
Features	Auto-negotiation
Power Supply	AC 100-240 V (50/60 Hz)
Ports	24

Summary

Introduction to Dual Speed Hub 500

Network Connectivity Explained

Ethernet Network Configuration Rules

Guidelines for cable length and repeater limits in 10Mbps Ethernet networks.

Fast Ethernet Network Configuration Rules

Guidelines for cable length and repeater limits in 100Mbps Fast Ethernet networks.

Using the Dual Speed Hub 500

Front Panel Components Overview

Description of physical ports and indicators on the hub's front panel.

RJ45 Port Connectivity

Details on connecting devices via the 12 or 24 RJ45 autosensing ports.

10BASE-T Connection Guide

Information on using 10BASE-T Category 3, 4, or 5 cables for 10Mbps connections.

100BASE-TX Connection Guide

Information on using 100BASE-TX Category 5 cables for 100Mbps connections.

MDI Switch Functionality

Status and Activity Indicators

Status LEDs

Interpreting port status and link pulse signals.

Segment LEDs

Understanding 10Mbps and 100Mbps activity and collision indicators.

Power/Self-test LED

Interpreting the power status and self-test results.

Mgmt/Attn LED

Understanding the status of the Management Module.

Rear Panel Connections

Power Supply Connection

Details on connecting the unit to a power source.

Redundant Power System Connector

Information on connecting an optional Advanced Redundant Power System.

Transceiver Module Slots

Overview of slots for installing transceiver or management modules.

Positioning and Mounting the Hub

Installation Guidelines

Recommendations for placement, airflow, and avoiding interference.

Rack or Wall Mounting Options

Instructions for mounting the unit in a 19in. rack or on a wall.

Power Up Procedures

Step-by-step guide for powering on the Dual Speed Hub 500.

Routine Spot Checks

Guidance on performing regular visual checks for potential issues.

Troubleshooting and Support

Information on what to do if the unit fails to operate correctly.

Safety Information and Precautions

General Safety Warnings

Important warnings regarding installation, grounding, and handling.

Power and Grounding Requirements

Essential information on power supply and earth connections.

Country-Specific Safety Notes

Safety guidelines specific to UK, France, and Peru.

Approved Power Cord Set

Requirements for the power cord set based on country.

Mounting Kit Instructions

Wall Mounting Procedures

Step-by-step guide for wall mounting one or two units.

Rack Mounting Procedures

Instructions for securely mounting the unit in a standard 19in. rack.

Technical Specifications Overview

Related Standards Compliance

List of standards the Dual Speed Hub 500 is designed and certified to.

Physical Dimensions and Weight

Detailed physical specifications including width, depth, height, and weight.

Electrical Ratings and Power

Information on power inlet, frequency, consumption, and voltage.

Lifetime Limited Warranty Details

Hardware and Software Warranty Terms

Coverage details for hardware and software products.

Standard Warranty Service Procedures

How to obtain warranty service for 3Com products.

Exclusive Warranties and Limitations

Information on warranty exclusions and liability limitations.

Electromagnetic Compatibility (EMC)

FCC Compliance Statement

FCC limits for Class A digital devices and potential interference.

CSA Compliance Statement

Canadian Interference-Causing Equipment Regulations compliance.

VCCI Compliance Statement

Japanese voluntary control council for interference compliance.

Radio Interference Guidance

User guidance on identifying and correcting radio or television interference.

Product Offerings

Dual Speed Hub 500 Models

List of available Dual Speed Hub 500 unit configurations.

Management and Connectivity Modules

Overview of available management and transceiver modules.

Cables and Cascade Equipment

List of cables and accessories for connecting units.

Distance Extender and Power Systems

Details on distance extender modules and redundant power systems.

Technical Support Resources

Accessing 3Com Online Resources

Information on using the 3Com World Wide Web site and BBS.

Connecting via Digital or Analog Modem

Instructions for accessing support services using modems.

Legal Notices and Disclaimers

Copyright and Revision Information

Legal notices regarding documentation reproduction and revision.

US Government Rights Clause

Restricted rights legend for US government agencies.

Environmental Policy Statement

Information on 3Com's commitment to environmentally friendly practices.