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User Guide - Page 1
OfficeConnect®
Ethernet Hub 4, 4C, 8, 8C (3C16704A, 3C16703A, 3C16700A, 3C16701A)
User Guide
User Guide - Page 2
... be registered in a directory file named LICENSE.TXT or !LICENSE.TXT. No part of this documentation may be provided to you are registered trademarks of Microsoft Corporation. Novell and NetWare are a United States government agency, then this User Guide.
All rights reserved. 3Com Corporation I 5400 Bayfront Plaza I Santa Clara, California I 95052-8145
Copyright © 2002...
User Guide - Page 3
... Connections 14
Spot Checks 14
Problem Solving for the Hub 4 and 4C 15
The OfficeConnect Ethernet Hub 8 and 8C 17 Ethernet Hub 8 and 8C-Front 17 Ethernet Hub 8 and 8C-Rear 18
Connecting Workstations and Other Equipment to Your Hub 19 Connecting OfficeConnect Ethernet Hubs Together 19
Connecting Hubs Using 10BASE-2 20 Checking Connections 20 Connecting Hubs Using 10BASE-T 21 Checking...
User Guide - Page 5
... and an AUI port. INTRODUCTION
Welcome to four or eight workstations, as shown in Figure 1. The OfficeConnect® product range from 3Com has changed this user guide contains general and specific information. When referring to form a stack (each hub is crucial. If you to create a small network with up to the world of networking.
In the...
User Guide - Page 6
...connections.
3
2 1
2 An operating system (for every workstation. I A stacking clip. http://support.3com.com/registration/frontpg.pl
Workstation Connections To connect workstations and other equipment to your hub, you can now register your OfficeConnect hub on the 3Com web site and receive up-to install network adapter cards, which provide your workstations.
3 One straight-through TP cable...
User Guide - Page 9
... not restricted. Positioning Your Hub
When installing your hub, ensure that it is within reach of the power outlet.
I Air flow around the unit and through the vents in line, gently push the hub on page 15 I OfficeConnect Ethernet Hub 8 or 8C
When you have an: I "Problem Solving for wall mounting.
I "Problem Solving for the Hub 4 and 4C" on...
User Guide - Page 10
... nothing is connected to the port. Port Status
AUI/COAX
Network Utilization
3C16703A
Alert
Power Activity Collision 1 2 3 4
Green=AUI Partitioned
1% 2% 3% 6% 12% 25% 50% 80%
Green = OK, Yellow = Partitioned
off=COAX
OfficeConnect Ethernet Hub 4C
Power LED green Indicates that segment. Collisions are part of network equipment is received on a port.
10BASE-T Port Status LEDs...
User Guide - Page 12
... is set to any of the hub's 10BASE-T RJ-45 ports using both ends of workstations that can use either 10BASE-T or 10BASE-2 (Hub 4C only) to your network by adding more OfficeConnect hubs. If... you are using port 4 to connect to a workstation using a straight-through TP cable, ensure the Uplink/Normal switch is...
User Guide - Page 14
... a number of ways, but for the Hub 4 and 4C" on .
If you suspect there is a problem, refer to "Problem Solving for simplicity we recommend the following method, as shown in Figure 5:
1 Starting from the bottom, connect the port 4 of the lower hub to port 3 of each hub.
2 Set all Uplink/Normal switches to Uplink (in )
AUI UNpolrimnkal...
User Guide - Page 15
...in your network (in your OfficeConnect hub. Examine your hub connections; Link between two OfficeConnect hubs not working. With 10BASE-2 it is likely an Uplink/Normal switch is usually a disconnected or ...use . PROBLEM SOLVING FOR THE HUB 4 AND 4C
The OfficeConnect hub has been designed to aid you may have a faulty power adapter which needs replacing with another OfficeConnect power ...
User Guide - Page 16
There is a problem with this connection. Check that the Uplink/Normal switch is set to Normal (out). If the cable is connected to port 4, ...damaged.
Pins 4, 5, 7 and 8 are not used
16 Port Status LED not lit for a 10BASE-T port that the equipment being connected to the hub is powered on and operating correctly. Pins 4, 5, 7 and 8 are not used
Crossover
TxD+ 1 TxD- 2 RxD+ 3 RxD- 6
1 ...
User Guide - Page 19
... add more OfficeConnect hubs. CAUTION: Do not power the hub off and on quickly. Do not connect the same two hubs together using 10BASE-T cables. Connecting Workstations and Other Equipment to Your Hub
WARNING: Please read the 'Important Safety Information' sheet before you start using a straight-through TP cable, ensure the Uplink/Normal switch is fully...
User Guide - Page 21
....
I The Alert LED is secure and not pulled taut.
21
Switch set to Uplink (in)
Switch set to port 7 of each hub.
2 Set all Uplink/Normal switches to "Problem Solving for each cable is the best way to another hub). I Cabling is not lit -
Figure 8 Correct Hub Connections Using 10BASE-T
Switch set to Uplink (in Figure 8:
1 Starting from the bottom, connect the...
User Guide - Page 22
... Uplink/Normal switch is incorrectly set. Perform these actions first:
I Power off the hubs, wait about 5 seconds and then power on . I Ensure all equipment is not being used. Examine your power adapter connection. Examine your hub connections; The port has partitioned. If this section does not solve your problem, contact your supplier for your OfficeConnect hub. This...
User Guide - Page 24
...A Network Loop occurs when two pieces of network equipment are a part of normal Ethernet operation and occur if two or more than a... that runs over 50 Ohm Coaxial cable. The OfficeConnect hub uses RJ-45 type connectors for the purpose of...Hub 4C only).
24 A sudden sustained increase in collisions can indicate a problem with 10BASE-2 cable, via single speed hubs, the entire ...
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