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.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii NOTICE The information in this publication is subject to change without notice. COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. This publication contains information protected by copyright.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Contents Chapter 1 Introduction Features......................................................................................................................... 1-1 Chapter 2 Hardware Description Front Panel.................................................................................................................... 2-1 LED Indicator Panel ..............................................................................................
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi Appendix C Specifications Appendix D Regulatory Standards Compliance Index Writer: Chris Seiter Project: Contents Comments: File Name:1009B_T.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Preface About this Guide This user guide is designed for the experienced network installer. It covers the following information to help in the installation and configuration of the Netelligent 1009B 10Base-T Hub: Q Hardware description and summary of features Q Hardware installation and configuration Q Troubleshooting tips Package Checklist Carefully unpack the contents of the package and verify them against the checklist given below.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Chapter 1 Introduction The Netelligent 1009B 10Base-T Hub is an 8-port Ethernet hub featuring an onboard microprocessor designed to monitor network utilization, collisions, link and port partition status. The hub’s comprehensive LED indicator panel simplifies installation and network troubleshooting by showing network utilization and collision levels at the hub ports.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Chapter 2 Hardware Description The Netelligent 1009B 10Base-T Hub is a highly reliable network concentrator that complies with IEEE 802.3 specifications. By passing data signals received on any port to all other ports, without modification, this hub meets the requirements for both Ethernet and IEEE 802.3 networks. This chapter describes the main hub components.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Hardware Description LED Activity Condition Indication STEADY LIGHT ON Hub is receiving power. NO LIGHT OFF Power is disconnected; no power received. Utilization The Utilization LEDs indicate the percentage of network bandwidth used by valid data. The hub updates this display every 0.5 seconds. Figure 2-2 .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Collision Label (%) Color 1% 3% 5% Green 10% 15+% Amber (yellow) Function Indicates the percentage of packet collisions occurring out of the total packets received by the hub. 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.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Hardware Description Figure 2-3 . Partition/Link Traffic LEDs Partition LED Activity STEADY YELLOW LIGHT NO LIGHT Condition PARTITION OFF Indication Indicates port partitioning due to a cable error or other abnormal network condition. Port is in good condition. A port is temporarily partitioned when a line error or too many collisions are detected on the attached segment.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Link/Traffic LED Activity Condition Indication STEADY GREEN LIGHT ON Indicates a valid link has been established on this port. BLINKING GREEN LIGHT ON Indicates the port is receiving packets; blinking is proportional to the traffic passing through the port. NO LIGHT OFF No valid link has been established on this port.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Hardware Description Back Panel This section describes the hub’s back panel components. Figure 2-4 . 1009B Hub Back Panel Port Connections BNC (10Base2) Connector The 1009B hub has a built-in BNC transceiver for a connection using thin coaxial cable. The BNC port can link up to 30 hubs on a thin coaxial cable segment.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 UPLINK Port You can use the MDI UPLINK port to expand the network by connecting the hub to another 1009B or compatible hub using straight-through twisted-pair cable. NOTE: If you use the UPLINK port, you cannot use RJ-45 Port 8. 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.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Chapter 3 Installing the Hub This chapter describes how to install the Netelligent 1009B 10Base-T Hub. It describes specific installation requirements, installation procedures, and basic network connections. Site Requirements Consider the following site requirements before you install the hub. Q Verify that the power source meets the following electrical specifications.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Installing the Hub Connecting the Hub System Follow these steps to connect the hub to your network. 1. Cascade hubs using the UPLINK port. The UPLINK port lets you uplink the 1009B hub to another 1009B or compatible hub. This port reverses transmit and receive signals, which lets you use straight-through cable to cascade hubs instead of crossover cable.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Using the hub in a stand-alone configuration, you can network up to eight workstations. NOTE : You can also connect a workstation to the BNC port. However, be sure you use a proper transceiver when connecting to this port. 4. Install the power adapter and power on the hub. 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.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Installing the Hub If you still cannot resolve the problem, refer to “Appendix A – Troubleshooting.” Writer: Chris Seiter Project: Installing the Hub Comments: File Name:1009B_3.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Chapter 4 Configurations The Netelligent 1009B 10Base-T Hub allows flexibility in configuring your network. You can use the hub in a stand-alone or multiple hub configuration. The hub’s RJ-45 UPLINK (MDI) port lets you connect multiple hubs using Category 3, 4 or 5 unshielded twisted-pair cable, or you can link hubs using a backbone connection. You can install the 1009B hub in a standard wiring closet or close to a workgroup.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Configurations Connecting Multiple Hubs The 1009B hub provides an uplink port that lets you connect the hub to another 1009B or compatible hub. The IEEE 802.3 standard recommends a limit of four hubs in an uplink configuration. However, physical restrictions depend on actual repeater delay.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Using Crossover Twisted-Pair Cable You can use crossover twisted-pair cable to connect the 1009B hub to a compatible hub using any available RJ-45 MDI-X port. Figure 4-3 . Multiple Hub Configuration Using a Crossover Cable Compaq Netelligent 1009B 10Base-T Hub User Guide Writer: Chris Seiter Project: Configurations Comments: File Name:1009B_4.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Configurations Using the BNC Port You can link the 1009B hub with other hubs using the BNC port on the back panel. The BNC port accepts thin coaxial cable (10Base2). A Thin Ethernet segment can extend up to 185 meters and connect up to 30 nodes. However, an Ethernet trunk can contain no more than three coaxial segments if each extends up to the maximum length (allowed for Thin Ethernet). Figure 4-4 .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Guidelines for Multiple Hub Configuration In a multiple hub configuration, the maximum limit between any two workstations is five cable segments and four hubs based on IEEE 802.3 recommendations. In the following example, if Workstation A sends a message to Workstation B, there can be up to four hubs in the path between them.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Appendix A Troubleshooting Diagnosing Hub Indicators 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. Symptom: Power indicator does not light.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 Appendix A: Troubleshooting System Diagnostics Installation Verify that all system components have been properly installed. If one or more components appear to be malfunctioning, test them in an alternate environment where all the other components are functioning properly. Cabling 1. Verify that the cabling type is correct. Be sure all cable connectors are securely seated in the required ports.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3 Configuration If problems occur after altering the network configuration, restore the original connections and try to track the problem down by implementing the new changes, one step at a time. Ensure that cable distances, repeater limits, and other physical aspects of the installation do not exceed recommendations. Hub Integrity As a last resort, verify the hub’s integrity with a power-on reset. Turn the power to the hub off and then on.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 Appendix B Port and Cable Pin Assignments Figure B-1 . RJ-45 Connector (hub side) Pin MDI-X Assignment (Port 1 ~ 8) MDI Assignment (UPLINK Port) 1 Input Receive Data + Output Transmit Data + 2 Input Receive Data - Output Transmit Data - 3 Output Transmit Data + Input Receive Data + 6 Output Transmit Data - Input Receive Data - Not Used Not Used 4,5,7,8 Table B-1 .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2 Appendix B: Port and Cable Pin Assignments BNC Port The BNC Port provides a way to interface with 10 Mb/s coaxial cable (Thin 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.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 Appendix C Specifications Transmission Technique Access Method Standards Conformance Media Supported Interfaces Dimensions Power Requirements Temperature Humidity Certification Emissions: Safety: Baseband CSMA/CD, 10Mb/s IEEE 802.3 10Base-T, 10Base2 Category 3,4,5 twisted-pair cable*, or Thin Ethernet Eight RJ-45 ports, 1 RJ-45 UPLINK port, and one BNC port 1.04 x 8.26 x 4.58 inches (2.67 x 21.17 x 11.74 cm) 7.5V AC, 50/60 Hz, 6.5watt.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1 Appendix D Regulatory Standards Compliance EMI Warning 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: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2 Appendix D: Regulatory Standards Compliance You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment. WARNING: Wear an anti-static wrist strap or take other suitable measures to prevent electrostatic discharge whenever handling this equipment.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3 VCCI Class B Compliance This product also complies with CISPR22 Class B (EN55022 Class B). EN55022 Declaration of Conformance 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. Conformity is declared by the application of EN55022:1987 Class B (CISPR 22:1985/BS 6527:1988).
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©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.
