HP AdvanceStack 10Base-T Hub-8U Installation and Reference Guide
© Copyright Hewlett-Packard Company 1997. All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. Publication Number J2610-90201 Edition 1 July 1997 Applicable Product HP J2610B Trademark Credits MS-DOS® and Microsoft® are U.S. registered trademarks of Microsoft Corporation. Ethernet is a registered trademark of Xerox Corporation.
HP AdvanceStack Hub-8U At A Glance The HP J2610B AdvanceStack Hub-8U is a multiport repeater with eight twisted-pair network ports. With this hub, you can connect computers and other devices together in an unshielded twisted-pair cable network. This hub is compliant with the IEEE 802.3 Type 10Base-T standard and supports both 802.3 and Ethernet networks.
Front of the Hub AUI/Xcvr port LED Hub status LEDs twisted-pair port LEDs MDI/MDI-X switch for port 1 Twisted-pair ports Back of the Hub cover plate over slot for HP AUI and Transceiver Modules iv cover plate over expansion slot for HP AdvanceStack 8U/16U SNMP Module DC power receptacle
Features Network Connections Eight RJ-45 (twisted-pair) ports to connect to end nodes or other devices. A Media Dependent Interface (MDI) switch for Port 1 which allows you to connect either an end node (MDI-X position) or to cascade a hub (MDI position) to the port, using a “straight-through” twisted-pair cable in both cases. Upgradeable Design, with Management Options A management slot in the back of the hub enables you to install an optional HP AdvanceStack 8U/16U SNMP Module.
0_hperf%.fm5 Page 3 Tuesday, July 22, 1997 4:54 PM HP Customer Support Services How to get the latest software/agent firmware You can download from the World Wide Web, HP FTP Library Service, CompuServe, and HP BBS a compressed file (j3133a.exe) containing the latest version of the HP Management Module firmware. After you download the file, extract the file by typing filename and pressing [Enter]. For example, j3133a [Enter]. World Wide Web http://www.hp.com/go/network_city Select the “Support” section.
0_hperf%.fm5 Page 4 Tuesday, July 22, 1997 4:54 PM HP FIRST Fax Retrieval Service HP FIRST is an automated fax retrieval service that is available 24 hours a day, seven days a week. HP FIRST provides information on the following topics: ■ Product information ■ Troubleshooting instructions ■ Technical reviews and articles ■ Configuration information To access HP FIRST, dial one of the following phone numbers: Location Phone Number U.S.
Table of Contents 1 Installing the Hub Installation Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1. Install add-in modules (optional) . . . . . . . . . . . . . . . . . 1-3 2. Verify the hub’s operation . . . . . . . . . . . . . . . . . . . . . 1-5 3. Mount the hub . . . . . . Equipment Required . Mounting Precautions Marking the Location . Mounting the Hub . . . . . . . . . . . . . . . . . . . . . . .
Testing End-to-End Network Communications . . . . . . . . 2-9 Replacement Instructions . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . 2-11 3 Hub Reference Front of the Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Hub status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Port status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Back of the hub . . . . . . . . . . . . . . . . . . . . .
1 Installation Summary 1. Install Add-in Modules (optional) 2. Verify the Hub’s Operation 3. Mount the Hub 4. Complete the Network Connections to the Hub 5.
Installing the Hub Installing the Hub This chapter describes how to install the HP AdvanceStack Hub-8U, verify its operation, and connect it to a network, other hubs, computers, and/or other devices. Installation Summary The basic hardware installation procedure for the HP AdvanceStack Hub-8U is as follows: 1. Install the optional HP AdvanceStack 8U/16U SNMP Module and/or one of the optional HP Transceiver Modules. 2. Verify the hub’s operation. 3. Mount the hub on a wall or under a tabletop. 4.
Installing the Hub 1. Install add-in modules (optional) It may be more convenient to install these optional modules before installing the hub under a desk or other location. Inspect your installation site and identify whether the hub’s module slots will be accessible. The HP J3133A AdvanceStack 8U/16U SNMP Module enables you to connect a PC to the hub to configure, monitor, and troubleshoot the hub.
Installing the Hub Installing the Hub The HP Transceiver Modules provide extended connectivity choices from the hub to Ethernet networks. The following optional transceiver modules provide these additional connectivity options: HP J2608A ThinLAN Transceiver Module for 10Base-2 networks HP J2606A Fiber-Optic Transceiver Module for 10Base-FL networks HP J2607A Twisted-Pair Transceiver Module for 10Base-T networks HP J2609A AUI Port Module for connecting a standard IEEE 802.
Installing the Hub 2. Verify the hub’s operation Installing the Hub Your hub uses power from an ac adapter. Note If your installation requires a different power cord than the one supplied with the hub, contact your HP-authorized LAN dealer or your local HP sales office. The hub does not have a power switch; it is powered on when the power cord is plugged in. To provide power to the hub, follow these steps: 1. Plug the power supply into the receptacle on the hub marked “Power”. 2.
Installing the Hub 3. Check the LEDs on the hub’s front panel. Installing the Hub When the hub is powered on, it performs a self-diagnostic test. During the test, all LEDs are lit for a short time. When the self-test completes successfully, the following events occur: • the Power LED stays on • the twisted-pair Port LEDs enter their normal operating state • If an HP Transceiver module is installed, the AUI/Xcvr LED stays lit A Port LED stays on if link beat has been detected at the port.
Installing the Hub Installing the Hub Mounting Precautions Before mounting the hub, follow these mounting precautions: Plan the hub’s location and orientation relative to other devices and equipment. Also consider the cabling that will be attached to the hub and ports that will be used. In the front of the hub, leave 3 inches (76 mm) of space for twisted-pair cables. In the back of the hub, leave 3 inches (7 cm) of space for the ac power cord, the AdvanceStack 8U/16U SNMP module, and a serial connector.
Installing the Hub Installing the Hub Mounting the Hub After the screws are in place, follow the steps below for mounting the hub on a wall or under a desk. 1. For a vertical mount (such as a wall), place the bottom of the hub against the screws. For a horizontal mount under a surface such as a desk or table, turn the hub upside down and gently place the hub up against the screws. 2. Slide the hub in either of the two diagonal directions to secure the hub into place.
Installing the Hub Installing the Hub 4. Complete the network connections to the hub Reconnect the hub to the power source and then make the network connections to the hub. Typical hub connections are: Hub-to-device connections. Connecting to network devices such as computers and printers. Hub-to-hub connections. Connecting to another HP AdvanceStack Hub or other Ethernet hub. Hub-to-network backbones. Connecting to a network backbone.
Installing the Hub Installing the Hub Connecting Hubs Together Twisted-Pair Cascade Connections To expand your network, the hub can be connected to other hubs by using the Media Dependent Interface (MDI) switch. The MDI/MDI-X switch controls how the signals are sent through the twistedpair cable connected to Port 1. The hub is shipped with the switch in the MDI-X position. The switch is a pushbutton switch with two positions: In the MDI position, use Port 1 to connect your hub to another hub.
Installing the Hub Hub attached to Port 1: switch in MDI position and straight-through cable is used. Up to 100 meters PC attached to Port 1: switch in MDI-X position and straight-through cable is used. ThinLAN Connections With an HP ThinLAN Transceiver Module for 10Base-2 networks, you can connect your hub to a thinLAN network. The following illustration shows a hub with an HP ThinLAN Transceiver Module connected to a ThinLAN backbone.
Installing the Hub Installing the Hub You can connect up to 30 hubs together on a common ThinLAN segment. The ThinLAN segment can include a computer attached to a hub at one end of the segment that can communicate with a computer attached to another hub at the other end of the segment. By using the BNC port on the module, the maximum repeater hop-count increment through the entire segment is only two. The following illustration shows you how to connect three hubs together from one ThinLAN port to another.
Installing the Hub Installing the Hub The following illustration shows a hub with an HP ThinLAN Transceiver Module connected to a thinLAN backbone. ThinLAN backbone Connecting the Hub-8U to a Fiber-Optic Backbone With an HP Fiber-Optic Transceiver Module for 10Base-FL networks, you can connect your hub to a fiber-optic backbone.
Installing the Hub Installing the Hub 5. Connect the hub to an ASCII console (optional) The optional HP AdvanceStack 8U/16U SNMP Module enables you to configure, monitor, and troubleshoot the hub from an ASCII console.
2 Troubleshooting Approaches Diagnosing with the LEDs Installation Problems Cabling Problems Unusual Network Activity Diagnostic Tests Customer Support Services Replacement Instructions Troubleshooting
Troubleshooting This chapter describes how to diagnose and resolve operating problems with your hub. Additionally, if you have an HP J3133A AdvanceStack 8U/16U SNMP Module installed, you can use ASCII console software for certain diagnostic functions to troubleshoot the hub. Troubleshooting Approaches Troubleshooting There are three primary ways to diagnose hub problems: By checking the LEDs on the front of the hub as described in “Diagnosing with the LEDs” later in this chapter.
Troubleshooting Diagnosing with the LEDs Most problems with the hub can be diagnosed using the LEDs on its front panel. This section describes the normal LED pattern during self-test, and LED patterns that indicate error conditions on the hub. LED Pattern During Self-Test If an HP Transceiver module is properly installed, the AUI/Xcvr LED stays lit. If an HP Transceiver module is not installed, the AUI/Xcvr LED turns off.
Troubleshooting LED Error Indications LED patterns indicating problems Diagnostic Tips Power Collision AUI/Xcvr Twisted-Pair Port Port OFF * * * Verify that the power supply is plugged into an active power source and to the hub. Make sure these connections are snug. Try power cycling the hub by unplugging and plugging the hub back in. Troubleshooting If the Power LED is still not on, verify the ac source works by plugging another device into the outlet.
Troubleshooting LED patterns indicating problems Diagnostic Tips Power Collision AUI/Xcvr Twisted-Pair Port Port ON Appears solidly ON * * Very frequent collisions are occurring, which could indicate a network fault or improperly terminated cable. A transceiver attached to the AUI port may not have the SQE test disabled. For information about the SQE test, see your documentation accompanying your transceiver module.
Troubleshooting Installation Problems By carefully following the installation procedures described in chapter 1, “Installing the Hub”, you can avoid most problems caused by improper installation of the hub or one of its components. Incorrect Hardware Installation Troubleshooting Incorrectly installing the hub, ac power cord, power supply, the HP AdvanceStack 8U/16U SNMP Module, or a transceiver module can result in one or all of these components malfunctioning or not functioning at all.
Troubleshooting Non-standard Cables Mis-wired cables may cause numerous network collisions, and can seriously impair network performance. Before connecting cables into your network, you should verify that they comply with the applicable standards. For a list of compatible cables and a description of the pinouts for each port on the hub (which can be used to confirm the compatibility of unlisted cables), see appendix A, “Cables and Connectors”.
Troubleshooting Diagnostic Tests If you have an HP AdvanceStack 8U/16U SNMP Module installed into the hub, the ASCII console provides tests and indicators that can be used to monitor the hub and its network connections. See the documentation shipped with the HP AdvanceStack 8U/16U SNMP Module and the console’s online Help system for more details about these tests and indicators.
Troubleshooting Testing End-to-End Network Communications Both the hub and the cabling can be tested by running an end-to-end communications test — a test that sends known data from one network device to another through the hub — such that you can verify that the data was correctly transmitted between the devices.
Troubleshooting Replacement Instructions Remove any of the optional modules that you have installed into your hub before returning it to Hewlett-Packard. Keep the optional modules to install them into the replacement hub. The modules can be damaged easily by small amounts of static electricity. Observe these precautions when removing and installing the modules: When handling the module, first touch a grounded metal surface, or wear an anti-static wrist strap that is attached to grounded metal.
Troubleshooting Customer Support Services Hewlett-Packard offers support 24 hours a day, seven days a week through the use of automated electronic services including: World Wide Web Hewlett-Packard FTP Library Service on the Internet CompuServ Hewlett-Packard BBS HP Network Phone-In Support (NPS) SNMP firmware for the AdvanceStack 8U/16U SNMP module (j3133a.exe) is available through several of the above services. Refer to the card at the front of this manual.
3 Front of the Hub Back of the Hub Hub Operation Hub Reference
Hub Reference Front of the Hub Hub status LEDs The hub status LEDs indicate whether the hub is functioning properly. For further details on error conditions indicated by the Status LEDs, see chapter 2, “Troubleshooting”. LED Hub Reference Power (green) 3-2 State Meaning of LED On The hub is receiving power. Off The hub is not receiving power. Activity (green) Flickering ON while a packet is being transmitted. Normally, the LED appears to flicker. In heavy traffic, it may appear on all the time.
Hub Reference Port status LEDs The following table provides LED port status information. If an AdvanceStack 8U/16U SNMP module is installed, additional LED states may be observed. For information about the hub LEDs when a module is installed, see the manual accompanying the module. LED AUI/Xcvr Port (green) State On An optional HP Transceiver Module is properly installed in the hub’s back panel slot. Off An HP Transceiver Module is not installed.
Hub Reference Back of the hub The back of the hub has two slots: the Management Slot and the AUI/Xcvr Slot. Management Slot The management slot is used to add an HP J3133A AdvanceStack 8U/16U SNMP Module. For more information, see the “Install Add-in Modules” section in chapter 1. AUI/Xcvr Slot Hub Reference The AUI/Xcvr Slot is used to add an HP Transceiver Module. For more information, see the “Install Add-in Modules” section in chapter 1.
Hub Reference Hub Operation The HP AdvanceStack Hub-8U is a multiport repeater that conforms to the IEEE 802.3 repeater specification. Data signals coming into the hub from any of its ports are automatically regenerated and transmitted to all the other hub network ports. The hub regenerates the data without interpreting the contents, so it can be used in either IEEE 802.3 or Ethernet networks and with any upper-level protocol. Collision Detection The hub also performs collision detection.
Hub Reference Link Beat Hub Reference Type 10Base-T devices use a signal called link beat (also called link test pulse). This signal informs the hub of the presence of a device connected to it over twisted-pair cable and of the integrity of the twisted-pair link between them. The hub will not transmit packets out of twisted-pair ports that do not sense the link beat signal.
A Recommended Cables Twisted-Pair Cable/Connector Pin-Outs ThinLAN Requirements Cables and Connectors
Cables and Connectors This appendix lists cables that have been tested and verified for use with the HP AdvanceStack Hub-8U. It also includes minimum pin-out information so, if you wish to use an unlisted cable, you can verify that the cables used in your installation are correctly wired. Note that each pin-out does not necessarily match the pin-out for the corresponding HP cable, but cables manufactured to follow the minimum pin-out will function correctly.
Cables and Connectors Twisted-Pair Cable/Connector Pin-Outs Twisted-Pair Cable for Hub-to-Computer Network Connection To connect PCs or other network devices to the hub, use a “straight-through” 10Base-T cable. The twisted-pair wires must be twisted through the entire length of the cable. The wiring sequence must conform to AT&T 258A (not USOC). See “Twisted-Pair Cable Pin Assignments” later in this chapter for a listing of the signals used on each pin.
Cables and Connectors Twisted-Pair Cable Pin Assignments Twisted-Pair Straight-Through Cable Hub End Computer or Transceiver End Signal Pins Pins Signal (receive +) (receive –) (transmit +) (transmit –) 1 2 3 6 1 2 3 6 (transmit +) (transmit –) (receive +) (receive –) ThinLAN Cable Requirements If you add an HP J2608A ThinLAN Transceiver Module, the thin coaxial cables used with the module must comply with the IEEE 802.3 Type 10Base2 requirements.
B Physical Electrical Environmental Connectors Electromagnetic Specifications
Specifications Specifications Physical Width: 21.6 cm (8.5 in) Height: 4.1 cm (1.6 in) Depth: 17.0 cm (6.7 in) Weight: 0.8 kg (1.5 lb) Electrical ac voltage: 100-240 volts Maximum current: 0.7 A max Frequency range: 47/63 Hz Environmental Operating Non-Operating Temperature: 0°C to 55°C (32°F to 131°F) -40°C to 70°C (-40°F to 158°F) Relative humidity: (non-condensing) 15% to 95% at 40°C (104°F) 15% to 90% at 65°C (149°F) Maximum altitude: 4.6 km (15,000 ft) 4.
Specifications Electromagnetic Emissions Specifications FCC part 15 Class A EN 55022 Class A / CISPR-22 Class A VCCI Level I Complies with Canadian EMC Class A requirements Immunity See the Declaration of Conformity for details at the end of the Regulatory Statements.
C This chapter covers the following topics: Safety and Regulatory Statements Declaration of Conformity Safety and Regulatory Statements
Safety Information Safety Symbols Safety and Regulatory Statements Documentation reference symbol. If the product is marked with this symbol, refer to the product documentation to get more information about the product. WARNING A WARNING in the manual denotes a hazard that can cause injury or death. CAUTION A CAUTION in the manual denotes a hazard that can damage equipment.
Informations concernant la sécurité Symboles de sécurité 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. CAUTION Un texte de mise en garde intitulé CAUTION indique un danger susceptible de causer des dommages à l’équipement.
Hinweise zur Sicherheit Sicherheitssymbole Safety and Regulatory Statements 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. WARNING Eine WARNING in der Dokumentation symbolisiert eine Gefahr, die Verletzungen oder sogar Todesfälle verursachen kann. CAUTION CAUTION in der Dokumentation symbolisiert eine Gefahr, die das Gerät beschädigen kann.
Considerazioni sulla sicurezza Simboli di sicurezza 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 WARNING denota un pericolo che può causare lesioni o morte. CAUTION La dicitura CAUTION denota un pericolo che può danneggiare le attrezzature.
Consideraciones sobre seguridad Símbolos de seguridad Safety and Regulatory Statements 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. WARNING Una WARNING en la documentación señala un riesgo que podría resultar en lesiones o la muerte. CAUTION Una CAUTION en la documentación señala un riesgo que podría resultar en averías al equipo.
Safety Information Safety and Regulatory Statements Safety Information 7
Regulatory Statements FCC Statement (For U.S.A. Only) Federal Communications Commission Radio Frequency Interference Statement Warning: This equipment generates, uses, and can radiate radio frequency energy. If it is not installed and used in accordance with the instruction manual, it may cause interference to radio communications.
Safety and Regulatory Statements Regulatory Statements 9
Declaration of Conformity Safety and Regulatory Statements The following Declaration of Conformity for the HP AdvanceStack Hub-8U complies with ISO/IEC Guide 22 and EN 45014. The declaration identifies the product, the manufacturer’s name and address, and the applicable specifications that are recognized in the European community.
Index
Index A ac adapter plugging into the hub, 1-5, C-2 plugging into the wall, 1-5 Activity LED, 3-2 AdvanceStack Assistant, v at a glance, iii ASCII console, 1-14 AUI/Xcvr LED, 3-3 AUI/Xcvr slot, 3-4 auto-partitioning basic operation, 3-5 Index B back of the hub installing optional modules, 1-3 BBS obtaining software from, 2-11 brackets, mounting how to order, 1-8 bulletin board obtaining software from, 2-11 C cables cabling problems, 2-6 network connections, A-2 twisted-pair connector pin-outs, A-3 cables
Index hub operation auto-partitioning, 3-5 collision detection, 3-5 link beat, 3-6 verifying, 1-5 Hub-8U ThinLAN connections, 1-11 hub-to-hub network connections using the ThinLAN port, 1-14 with the MDI switch, 1-10 I L LAN adapter cards to test end-to-end communications, 2-9 LEDs Activity, 3-2 AUI/Xcvr, 3-3 Collision, 3-2 diagnosing the hub status, 2-3 pattern during self test, 2-3 patterns showing error conditions, 2-4 Power, 3-2 twisted-pair ports, 3-3 verifying hub operation, 1-6 link beat descripti
Index R recommended cables, A-2 Regulatory statements, C-9 replacement of the hub, 2-10 resetting the hub troubleshooting procedure, 2-8 Index S Safety information, C-2 screws description, 1-7 specifications connectors, B-2 electrical, B-2 electromagnetic, B-2 environmental, B-2 physical, B-2 status LEDs description, 3-2 summary installation steps, 1-2 T technical support types of, 2-11 testing twisted-pair cabling, 2-8 ThinLAN connections, 1-11 ThinLAN port cable requirements, A-4 topology faults, 2-7
H © © 1997 Hewlett-Packard Company Printed in U.S.A.
