Compaq Netelligent 1009B User Manual

10base-t hub

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Netelligent 1009B

10Base-T Hub

User Guide

Compaq Registered U.S. Patent and Trademark Office.

Company and product names mentioned herein may be

trademarks and/or registered copyright and trademarks of

their respective companies.

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Summary of Contents for Compaq Netelligent 1009B

Page 1: User Guide
Netelligent 1009B 10Base-T Hub User Guide ©1997 Compaq Computer Corporation. All rights reserved. Compaq Registered U.S. Patent and Trademark Office. Company and product names mentioned herein may be trademarks and/or registered copyright and trademarks of their respective companies.
Page 2 1997 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A. Compaq Registered United States Patent and Trademark Office. Netelligent is a trademark of Compaq Computer Corporation. Compaq Netelligent 1009B 10Base-T Hub User Guide Second Edition (August 1997) Part Number 167174-002...
Page 3: Table Of Contents
Back Panel ... 2-6 Port Connections ... 2-6 Site Requirements... 3-1 Connecting the Hub System ... 3-2 Stand-Alone Configuration... 4-1 Connecting Multiple Hubs... 4-2 Using Crossover Twisted-Pair Cable ... 4-3 Using the BNC Port... 4-4 Guidelines for Multiple Hub Configuration ... 4-5...
Page 4 ......
Page 5: Features
Compaq Netelligent 10Base-T Hub Quick Install Guide Warranty registration card If any parts are incorrect, missing, or damaged, contact your Compaq Authorized Reseller. If possible, retain the carton and original packing materials in case you need to repack the contents and return the hub for repair.
Page 6 ......The Netelligent 1009B 10Base-T Hub is an 8-port Ethernet hub featuring an on- board microprocessor designed to monitor network utilization, collisions, link and port partition status.
Page 7: Front Panel
......The Netelligent 1009B 10Base-T Hub is a highly reliable network concentrator that complies with IEEE 802.3 specifications.
Page 8 30 and all the other LEDs before it (that is, 1, 5, and 15) light in rapid succession. These LEDs monitor the share of valid network frames transmitted by this hub within a 10Mb/s bandwidth. They provide a quick way to monitor the current...
Page 9 10% 15+% Amber (yellow) Collisions occur when two or more devices connected to a hub attempt to transmit data simultaneously on the network. When a collision occurs, devices pause and then re-transmit after a random wait period. Because wait periods differ among devices, successive collisions become increasingly improbable.
Page 10 ......A port is temporarily partitioned when a line error or too many collisions are detected on the attached segment.
Page 11 ......The corresponding Link/Traffic LED lights when a device (for example, computer, hub or bridge) establishes a valid connection using the RJ-45 port. However, for the BNC port, no link connection is tested. The Link/Traffic LED for this port only monitors the traffic condition.
Page 12: Back Panel
BNC ports, there should be at least 0.5 meters (about two feet) of coaxial cable between the two BNC ports. If the hub is at the end of an Ethernet cable, plug and lock the 50-ohm ( ) terminators to the T-type connector on the BNC port.
Page 13 1009B or compatible hub using straight-through twisted-pair cable. You can also uplink to another hub by running straight-through twisted-pair cabling from any station port on the 1009B hub to a crossover port on another 1009B or compatible hub. However, if you must connect to another hub via station ports at both ends of the cable, use crossover cabling.
Page 14: Site Requirements
This chapter describes how to install the Netelligent 1009B 10Base-T Hub. It describes specific installation requirements, installation procedures, and basic network connections. Consider the following site requirements before you install the hub. Verify that the power source meets the following electrical specifications.
Page 15 (However, you must not plug both ends of the cable to the UPLINK port of each hub.) If all your hubs are from Compaq, you can link up to five hubs using this type of connection. Otherwise, limit your configuration to four hubs.
Page 16: Stand-Alone Configuration
Plug the smaller end of the power adapter cord into the power connector on the back of the hub. Then connect the other end of the power adapter cord into an electric outlet. The Power LED indicator lights when power is applied.
Page 17 ......If you still cannot resolve the problem, refer to “Appendix A – Troubleshooting.”...
Page 18 ......The Netelligent 1009B 10Base-T Hub allows flexibility in configuring your network.
Page 19 ......The 1009B hub provides an uplink port that lets you connect the hub to another 1009B or compatible hub.
Page 20 ......You can use crossover twisted-pair cable to connect the 1009B hub to a...
Page 21: Using The Bnc Port
......You can link the 1009B hub with other hubs using the BNC port on the back panel.
Page 22 However, if all your hubs are from Compaq, the maximum limit between two workstations is six cable segments and five hubs. To control the number of hubs in a path, we recommend that you use one hub to connect to several other hubs. By using a star configuration, you can link more workstations together in a network than would be possible with an uplink configuration.
Page 23 You can easily monitor the Netelligent 1009B hub using its comprehensive front panel LED indicators. These indicators help you identify problems the hub may encounter. This section describes common problems and possible solutions. If these suggestions do not solve your problem, contact your Compaq Authorized Reseller.
Page 24 (that is, not an uplink configuration), be sure you use a crossover cable. You should use crossover cable only if the uplink port is not available on either hub. When using thin Ethernet (BNC) cabling, be sure both ends are closed off with 50-ohm terminators.
Page 25 As a last resort, verify the hub’s integrity with a power-on reset. Turn the power to the hub off and then on. If the problem still persists and you have completed all the preceding diagnoses, then contact your Compaq Authorized Reseller for...
Page 26 Schematics for both straight and crossover twisted-pair cable are shown below. Straight-Through (Hub) (Adapter) 1 IRD+ 1 OTD+ 2 IRD- 2 OTD- 3 OTD+ 3 IRD+ 6 OTD- 6 IRD- Crossover (Hub) (Hub) 1 IRD+ 1 IRD+ 2 IRD- 2 IRD-...
Page 27 Ethernet) via an internal transceiver. Thin Ethernet is typically used as a bus type network backbone. If you install Thin Ethernet cable, remember to close off both ends with a 50-ohm terminator. A T-type connector and 50-ohm terminator are provided with the 1009B hub.
Page 28 Safety: * Using UTP cable meets EMI requirements only for Class A. Use STP cable if you need to meet the EMI requirements for Class B. Topology Hub-to-Workstation Distance Number of Interconnected Hubs Baseband CSMA/CD, 10Mb/s IEEE 802.3 10Base-T, 10Base2...
Page 29 FCC Class B Certification Compaq Computer Corporation Model Number: 1009B This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation.
Page 30 ......You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.
Page 31 ......This product also complies with CISPR22 Class B (EN55022 Class B). This is to certify that the Compaq Netelligent 1009B 10Base-T Hub is shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a.
Page 32 Coaxial segments 2-6, 4-4 Collision LEDs 2-3 levels 1-1 Compliance regulatory D-1 safety D-5 Configuration guidelines for multiple hubs 4-3 multiple hub 4-2 stand-alone 4-1 star 4-5 Configurations 4-1 Connecting hub 3-2 Crossover cable 4-3 Diagnostics LED A-1 system A-2...
Page 33 LED indicator 2-1, 3-3 diagnosing A-1 Link status 3-3 Link/Traffic LED 2-3, 2-5 MDI UPLINK port 2-7 Microprocessor 1-1 Multiple hub configuration 4-2 Network interface cards 3-2 Network utilization 1-1, 2-2 Partition indicator 3-3 LED 2-3, 2-4 Partition/Link Traffic LEDs 2-4...
Page 34 ©1997 Compaq Computer Corporation. All rights reserved. Compaq Registered U.S. Patent and Trademark Office. Company and product names mentioned herein may be trademarks and/or registered copyright and trademarks of their respective companies.