HP AdvanceStack 100Base-T Hub-8TXE Installation and Reference Guide
© Copyright 1996 Hewlett-Packard Company All Rights Reserved Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. Publication Number J3235-90001 Edition 1 November 1996 Applicable Product HP J3235A AdvanceStack 100Base-T Hub-8TXE Disclaimer The information contained in this document is subject to change without notice.
Package Contents Carefully unpack the contents of the package and verify them against the checklist given below. Package Checklist æ HP AdvanceStack 100Base-T Hub-8TXE (Part No.
Quick Installation The HP J3235A AdvanceStack 100Base-T Hub-8TXE contains 8 100Base-TX Fast Ethernet ports. The smart design built into the front display panel provides a friendly interface that simplifies installation and network troubleshooting. If you are already familiar with basic network operations, you should be able to install this hub as described below: 1. Unpack the HP Hub-8TXE. 2. Find a location close to the network devices you need to connect, and within easy reach of an electrical outlet. 3.
HP Hub-8TXE Installation and Reference Guide 6. This hub can serve as a stand-alone repeater for small networks, can be cascaded with compatible devices (e.g., Fast Ethernet hub or switch), or can be connected to a network interconnection device (e.g., Fast Ethernet bridge or router). 7.
About this Guide This guide is designed for the experienced network installer. It describes how to install and operate the HP Hub-8TXE. After reading this manual, you should be able to use the front display panel and configure options to manage all your network connections. This manual covers the following topics: Chapter 1 - Product Overview Brief description of Fast Ethernet, followed by a description of this hub and a summary of its important features and specifications.
Contents Chapter 1: Product Overview ................................................. 1-1 Introduction to Fast Ethernet .....................................................................................1-1 HP Hub-8TXE...........................................................................................................1-1 Basic Features ...........................................................................................................1-2 Chapter 2: Installing the System.....................
HP Hub-8TXE Installation and Reference Guide Appendix A: Troubleshooting................................................ A-1 Diagnosing Hub Indicators........................................................................................A-1 System Diagnostics ...................................................................................................A-2 Power and Cooling Problems ...............................................................................A-2 Installation ........................
HP Hub-8TXE Installation and Reference Guide List of Figures Figure 3.1 Figure 3.2 Figure 4.1 Figure 4.2 Figure 4.3 Figure B-1 Stand-Alone Configuration ....................................................................3-1 Multiple Hub Configuration Using the Cascade Port.............................3-2 Front Panel .............................................................................................4-1 Indicators ...................................................................................
Chapter 1: Product Overview Introduction to Fast Ethernet Standard 10 Mbits/s Ethernet has served well for past generations of 286 and 386 machines performing simple file transfers. However, with the inevitable growth in corporate network size and the introduction of fully-functional 32-bit PC architectures, and operating systems running complex applications, 10 Mbits/s Ethernet has become a serious bottleneck.
HP Hub-8TXE Installation and Reference Guide Basic Features • Transmits data at 100 Mbits/s for demanding applications • Conforms to the IEEE 802.
HP Hub-8TXE Installation and Reference Guide • With the jabber lock-up function, the hub automatically stops transmission of abnormal Ethernet frames that may cause data loss for all network users. (Jabber refers to abnormal Ethernet frames which are much too long and may come from a malfunctioning Ethernet card.) • With automatic polarity detection, the hub recognizes and adjusts for attached cable assemblies which may be wired with incorrect polarity on the receive pair.
Chapter 2: Installing the System This chapter provides information on installing the HP Hub-8TXE, establishing network connections, and configuring the system. You may install this hub on any level surface (e.g., a table or shelf) or in a standard EIA equipment rack. However, please take note of the following minimum site requirements before you begin.
HP Hub-8TXE Installation and Reference Guide Connecting the Hub System The HP Hub-8TXE has 8 RJ-45 ports and 1 RJ-45 cascade port. The ports allow you to make connections to devices such as a workstation, server, bridge or router. You can also cascade to another compatible hub or switch by connecting an MDI port on one device (e.g., port 8MDI on this hub) to an MDI-X port on the other device. Or you can cascade from an MDI port on another device to any MDI-X port on this hub. See Figure 4.1.
HP Hub-8TXE Installation and Reference Guide Making a Connection via the MDI Cascade Port 1. To make a direct connection to another compatible repeater or switch, use the 8MDI cascade port. When connecting to this port, remember not to use port 8MDI-X. 2. Prepare straight-through shielded or unshielded twisted-pair cables with RJ-45 plugs at both ends. Use 100W Category 5 cable for all connections.
HP Hub-8TXE Installation and Reference Guide traverse through both hubs, for a cable equivalent length of 72m + 72m. This gives: 100m 100m 72m + 72m -------344m The maximum “network diameter” for 100Base-TX is 367m, so we can use a maximum of 367m - 344m, or 23m between the two hubs. Figure 3-2 illustrates this example. Providing Power to the Hub 1. Power on the hub by plugging the power cord into the power socket at the rear of the hub, and the other end into a power outlet. 2.
HP Hub-8TXE Installation and Reference Guide If the Link status indicator is not functioning properly, or you experience any other difficulties in setting up the hub, refer to Appendix A. Verifying System Operation Verify that all attached devices have a valid connection. The hub monitors link status for each port. If any device is properly connected to the hub and transmitting a link beat signal, the Link indicator lights up for the corresponding port.
Chapter 3: Configuring the Network The HP Hub-8TXE allows great flexibility in configuring your network. You can use it in a stand-alone or multiple hub configuration. Some of the common applications for this Fast Ethernet hub are described in this chapter. Stand-Alone This hub can be used in a simple stand-alone configuration as illustrated below. In compliance with IEEE 802.3u standards, the maximum cable distance between the hub and any workstation is 100 meters for twisted-pair cable. Figure 3.
HP Hub-8TXE Installation and Reference Guide Connecting Multiple Hubs You can easily connect to another hub via the MDI cascade port. Figure 3.2 shows a sample configuration. Figure 3.
Chapter 4: Hardware Reference Before connecting any network device to this hub, please review Chapter 2 for information on system installation and Chapter 3 for a brief look at common network architectures. This chapter describes the hardware features of the HP Hub-8TXE. For easier management and control of the hub, familiarize yourself with the display indicators and ports. Front Panel There are 8 RJ-45 MDI-X ports and 1 RJ-45 MDI cascade port on the front panel.
HP Hub-8TXE Installation and Reference Guide The front panel array provides indicators that show the utilization of network bandwidth and indicate the status of port connections. It includes port status indicators and a statistical display for network traffic as shown below. Figure 4.2 Indicators Power Color: Function: Condition ON OFF 4-2 Green Power indicator Indication Unit is receiving power. Power is disconnected, no power received.
HP Hub-8TXE Installation and Reference Guide Statistical Display for System Performance Utilization - (Utilization%) The statistical indicators show the percentage of valid data passing through all ports compared to overall network bandwidth (updated every 0.5 seconds). There are 5 LEDs representing the percentage of network utilization. The corresponding LEDs light up to show that the utilization of LAN bandwidth has reached this level. When active, these LEDs behave like a stereo’s equalizer display.
HP Hub-8TXE Installation and Reference Guide Note: If the hub displays a high collision rate, check to see if any of the connected devices are malfunctioning or if a loop has been formed in your network connections. Otherwise, you may need to reconfigure your network to balance the traffic load. Port Status Display Partition Color: Function: Condition ON OFF Orange Shows if the port has been isolated from the network Indication Indicates port has been partitioned due to an abnormal network condition.
HP Hub-8TXE Installation and Reference Guide Troubleshooting: If the Link LED does not light up when a device is connected to its corresponding port, check that both the hub and connected device are powered on. For devices connected to the hub using twisted-pair cable, check that the cable length does not exceed 100 meters. You should have standard, straight-through cables and not crossover or other specialized cables.
HP Hub-8TXE Installation and Reference Guide Rear Panel The rear panel on the hub includes a full-range power socket. Figure 4.3 Rear Panel Power Socket The power socket accepts AC power from 100-127 VAC to 200-240 VAC at 50 to 60Hz. The unit is equipped with a universal full-range power source.
Appendix A: Troubleshooting Diagnosing Hub Indicators This Fast Ethernet hub can be easily monitored through its comprehensive panel indicators. These indicators assist the network manager in identifying problems the hub may encounter. This section describes common problems you may encounter and possible solutions. Symptom: Power indicator does not light up. Cause: Defective power outlet, power cord, or internal power supply. Solution: Check power cord and power source connections.
HP Hub-8TXE Installation and Reference Guide System Diagnostics Power and Cooling Problems If the Power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply as explained in the previous section.
HP Hub-8TXE Installation and Reference Guide LAN Adapters Make sure the network interface hardware and software drivers for the attached devices are function properly and are 100Base-TX. Check the LAN adapters and associated drivers used in any attached workstation or server. Physical Configuration If problems occur after altering the network configuration, restore the original connections, then try to track the problem down by implementing the new changes, one step at a time.
Appendix B: Port and Cable Assignments RJ-45 Port Figure B-1 RJ-45 Connector (on the Hub Side) Pin 1 2 3 6 4,5,7,8 MDI-X Assignment (Port 1 ~ 8) Receive Data + Receive Data Transmit Data + Transmit Data Not Used MDI Assignment (Cascade Port 8) Transmit Data + Transmit Data Receive Data + Receive Data Not Used Table B-1 RJ-45 Pin Assignments Schematics for both straight and crossover twisted-pair cable are shown below.
Appendix C: Product Specifications Transmission Technique Topology Access Method Standards Conformance Media Supported Interfaces Hub-to-Workstation Distance Cascade Distance (2 hubs) Dimensions Power System Temperature Humidity Certification Emissions Safety Acoustic Noise Baseband Star or Tree CSMA/CD, 100Mbit/s IEEE 802.
Appendix D: Safety and Regulatory Statements This chapter covers the following topics: ■ power precautions ■ safety and regulatory statements Power Precautions Follow these precautions when unplugging and plugging in power to the hub. Caution If your installation requires a different power cord than the one supplied with the hub, be sure to use a power cord displaying the mark of the safety agency that defines the regulations for power cords in your country.
HP Hub-8TXE Installation and Reference Guide Safety Information WARNING CAUTION Documentation reference symbol. If the product is marked with this symbol, refer to the product documentation to get more information about the product. A WARNING in the manual denotes a hazard that can cause injury or death. A CAUTION in the manual denotes a hazard that can damage equipment. Do not proceed beyond a WARNING or CAUTION notice until you have understood the hazardous conditions and have taken appropriate steps.
HP Hub-8TXE Installation and Reference Guide Informations concernant la sécurité WARNING CAUTION Symbole de référence à la documentation. Si le produit est marqué de ce symbole, reportez-vous à la documentation du produit afin d'obtenir des informations plus détaillées. Dans la documentation, un WARNING indique un danger susceptible d'entraîner des dommages corporels ou la mort. Un texte de mise en garde intitulé CAUTION indique un danger susceptible de causer des dommages à l'équipement.
HP Hub-8TXE Installation and Reference Guide Hinweise zur Sicherheit WARNING CAUTION Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem Symbol markiert ist, schlagen Sie bitte in der Produktdokumentation nach, um mehr Informationen über das Produkt zu erhalten. Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem Symbol markiert ist, schlagen Sie bitte in der Produktdokumentation nach, um mehr Informationen über das Produkt zu erhalten. Symbol für Dokumentationsverweis.
HP Hub-8TXE Installation and Reference Guide Considerazioni sulla sicurezza WARNING CAUTION Simbolo di riferimento alla documentazione. Se il prodotto è contrassegnato da questo simbolo, fare riferimento alla documentazione sul prodotto per ulteriori informazioni su di esso. La dicitura WARNINGdenota un pericolo che può causare lesioni o morte. La dicituraCAUTION denota un pericolo che può danneggiare le attrezzature.
HP Hub-8TXE Installation and Reference Guide Consideraciones sobre seguridad WARNING CAUTION Símbolo de referencia a la documentación. Si el producto va marcado con este símbolo, consultar la documentación del producto a fin de obtener mayor información sobre el producto. Una WARNING en la documentación señala un riesgo que podría resultar en lesiones o la muerte. Una CAUTION en la documentación señala un riesgo que podría resultar en averías al equipo.
HP Hub-8TXE Installation and Reference Guide Safety Information (Japanese) Safety and Regulatory Statements D-7
HP Hub-8TXE Installation and Reference Guide Regulatory Statements FCC Class A Statement (for U.S.A. Only) This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
HP Hub-8TXE Installation and Reference Guide European Community This equipment complies with ISO/IEC Guide 22 and EN55022 Class A with unshielded cables and EN55022 Note With unshielded cables this is a Class A product. In a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures. Canada This product complies with Class A Canadian EMC requirements.
Appendix E: Product Support Services Hewlett-Packard offers support through the use of automated electronic services including: • • • World Wide Web HP Network Phone-In Support (NPS) HP FIRST FAX Retrieval Service World Wide Web http://www.hp.com/go/network_city From this web site you can view information about HP’s complete networking product line.
HP Hub-8TXE Installation and Reference Guide To access HP FIRST, dial one of the following phone numbers: Location U.S. and Canada Only Outside the U.S. and Canada Phone Number Dial 1 (800) 333-1917 with your fax machine or touch-tone phone and press 1. Dial 1 (208) 344-4809 from your fax machine and press 9. To receive a list of currently available documents, enter document number 19941. The information you requested will be sent to you by return fax.
Glossary 100BASE-TX IEEE’s specifications for 100 Mbit/s Ethernet using twisted-pair cable (100W STP or UTP). The maximum length of cable for a hub to end-node connection is 100 meters. Cascade Port An MDI RJ-45 port used to cascade compatible devices in a cascade configuration using straight-through twisted-pair cable.
HP Hub-8TXE Installation and Reference Guide Fast Ethernet 100 Mbit/s network communication system based on Ethernet and the CSMA/CD access method. IEEE 802.3 Standard Standard for the physical and electrical connections in local area networks developed by the IEEE. The IEEE 802.3u standard covers these same issues for 100 Mbit/s networks. LED Light emitting diode on the front panel of the hub used for monitoring a hub or network condition. An LED display corresponds to a hub condition.
HP Hub-8TXE Installation and Reference Guide Shielded Twisted-Pair (STP) Twisted-pair wire covered with an external aluminum-foil or woven-copper shield designed to reduce excessive noise pick up or radiation. The STP cable refered to in this manual is also sometimes called screened twisted-pair (ScTP). Its impedance is 100W and has the same pin assignment as UTP. This cable should not be confused with the older 150 W cable type designed by IBM.
Index A I Automatic Partitioning • 1-2 Automatic Polarity Detection • 1-3 Indicator Panel • 4-1 Installation Requirements • 2-1 Installing the System • 2-1 Introduction to Fast Ethernet • 1-1 C J Cable Assignments • B-1 Configuring the Network • 3-1 Connecting Multiple Hubs • 3-2 Connecting the Hub System • 2-2 Connection Verifying • 2-5 Crossover Cable • B-1 Jabber Lock-up • 1-3 L D Distance Limit for Fast Ethernet Cabling • 2-3 E LED Indicators Collision% • 4-3 Link • 4-4 Partition • 4-4 Power
HP Hub-8TE Installation and Reference Guide P V Port Assignments • B-1 Port Status Indicators • 4-4 Power Socket • 4-6 Product Features • 1-2 Product Support Services • E-1 Providing Power to the Hub • 2-4 Verifying Connections • 2-5 Verifying Port Status • 2-4 Verifying System Operation • 2-5 R Rear Panel • 4-6 Regulatory Information • D-1, D-8 S Safety Information • D-1, D-2 Specifications Certification • C-1 Interfaces • C-1 Media Supported • C-1 Power System • C-1 Standards Conformance • C-1 Stand
