HP J3188A Installation And Reference Manual
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HP J3188A Installation And Reference Manual

HP J3188A Installation And Reference Manual

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Installation and
Reference Guide
HP J3188A
HP 10Base-T Hub-16M

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Summary of Contents for HP J3188A

  • Page 1 Installation and Reference Guide HP J3188A HP 10Base-T Hub-16M...
  • Page 3 HP 10Base-T Hub-16M (J3188A) Installation and Reference Guide...
  • Page 4 Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett-Packard. Applicable Product HP 10Base-T Hub-16M (J3188A) Warranty See the warranty booklet and the registration form included Trademark Credits with the product.
  • Page 5 HP 10Base-T Hub-16M (J3188A) HP 10Base-T Hub-16M (J3188A) The HP 10Base-T Hub-16M (J3188A) is a multiport repeater with 16 twisted- pair ports, and one AUI port. With this hub, you can connect computers, printers, and servers together for file sharing. This hub is compliant with the IEEE 802.3 Type 10Base-T standard and supports both 802.3 and Ethernet...
  • Page 6 Simple Network Management Protocol (SNMP) over IP (using the configured IP address) or Novell NetWare (IPX). The agent code also provides HP EASE (Embedded Advanced Sampling Environment), which samples network data for enhanced diagnostics from a network management station.

  • Page 7: Table Of Contents

    Contents 1 Installing the Hub Installing and Configuring Your Hub ......1-2 1. Verify included parts ........1-2 2.
  • Page 8 A Cables and Connectors Recommended Cables ........A-1 Twisted-Pair Cable/Connector Pin-Outs .
  • Page 9 Additional Notes ......... . . E-2 Examples of Backup Links .

  • Page 11: Installing The Hub

    Installing the Hub This chapter describes how to install the hub. Topics in this chapter include installing and configuring the hub connecting devices to the hub connecting hubs together interpreting hub LEDs...

  • Page 12: Installing And Configuring Your Hub

    1. Verify included parts Each Hub-16M has the following components shipped with it: HP 10Base-T Hub-16M (J3188A) Installation and Reference Guide— this manual (J3188-90001) A U.S./Canada/Mexico (8120-1378) power cord. Accessory kit (5064-2053): •...
  • Page 13 N o t e The hub does not have a power switch; it is powered on when the power cord is plugged in. HP recommends that you only use one power source at a given time.
  • Page 14 Installing the Hub Installing and Configuring Your Hub Check the LEDs on the hub’s front panel. When the hub is powered on, it performs a power-on self test. See the table below for the LED pattern that occurs during the self test. On for 20 seconds, On for five then enters...

  • Page 15: Mount The Hub

    Installing the Hub Installing and Configuring Your Hub 4. Mount the hub The HP Hub-16M can be mounted in two ways: in a rack or cabinet on a table The hardware for mounting the hub is included in the accessory kit (5064-2053) packed with the hub.
  • Page 16 Installing the Hub Installing and Configuring Your Hub Table Mounting To place the hub on a table or other horizontal surface, no special tools are necessary. Apply the four feet included in the accessory kit onto the bottom of the hub. Be certain to pick a sturdy table in an uncluttered area. You may want to secure the hub’s cables to the leg of the table to prevent people from tripping over them.

  • Page 17: Connect The Hub To Your Network

    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 10Base-T hub, or other Ethernet hub. hub-to-network backbones. Connecting to a network backbone.

  • Page 18: Connecting Devices To The Hub

    Installing the Hub Installing and Configuring Your Hub Connecting Devices to the Hub To connect a device to the hub, push the RJ-45 plug into the RJ-45 jack until the tab on the plug clicks into place. RJ-45 Connector unshielded twisted-pair cable Category 3, 4, or 5 Cat 3, 4 maximum distance: 100 meters Connecting Hubs Together...
  • Page 19 ThinLAN Connections With an HP ThinLAN External Transceiver for 10Base2 networks, you can connect your hub or a stack of hubs to a thin LAN network. The following illustration shows a hub with an HP ThinLAN External Transceiver.
  • Page 20 50-ohm terminator ThinLAN coax connecting the hubs together Hub-16U HP AdvanceStack 10Base-T Hub-24 50-ohm terminator N o t e Each ThinLAN cable segment must be terminated using a 50-ohm terminator at each end. In the illustration above, a 50-ohm terminator is placed at each end of the cable segment.

  • Page 21: Interpreting Led Status

    Connecting the Hub-16M to a Fiber-Optic Backbone With an HP Fiber-Optic external transceiver for 10Base-FL networks, you can connect your hub to a fiber-optic backbone. The following illustration shows a hub with an HP Fiber-Optic external transceiver connected to a fiber-optic backbone: Fiber-optic...

  • Page 22: Interpreting Hub Status Leds

    Installing the Hub Interpreting LED Status Interpreting 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”. State Meaning of LED The hub is receiving power.

  • Page 23: Interpreting Port Status Leds

    Installing the Hub Interpreting LED Status Interpreting Port Status LEDs The following table provides LED port information. State Meaning of LED Twisted-pair Link beat is detected from the attached node. Port (green) The port is not receiving the link beat signal from the attached node.

  • Page 25: Troubleshooting

    Troubleshooting This chapter describes ways to troubleshoot the hub. Topics covered are: troubleshooting approaches using a checklist to diagnose the hub interpreting the LED pattern during self test hub maintenance tasks Troubleshooting Approaches There are three primary ways to diagnose hub problems: By checking the LEDs on the front of the hub as described in the section, “Using a Checklist to Diagnose the Hub”...

  • Page 26: Using A Checklist To Diagnose The Hub

    Troubleshooting Using a Checklist to Diagnose the Hub Using a Checklist to Diagnose the Hub Use the following table to diagnose the problem with your HP Hub-16M. Problem Solution How do I reset the hub? Remove the plug on the power cord from the power source and reconnect it.

  • Page 27: Led Operation

    If this condition persists, call your HP-authorized LAN dealer or HP representative for assistance. Check cabling on the indicated port all the way out to the device attached to that port.
  • Page 28 The hub has failed its self-test. Power- cycle the hub. If this condition persists, call your HP-authorized LAN dealer or HP representative for assistance. OFF The internal power supply is operating properly and the RPS is not being used.

  • Page 29: Hub Maintenance Tasks

    Troubleshooting Hub Maintenance Tasks Hub Maintenance Tasks There are several hub maintenance tasks you can perform. They include: testing the hub only clearing a password from the ASCII console running connectivity tests Each of these tasks is described in the following sections. Testing the Hub Only If you believe that the hub is not operating correctly, remove and reinsert the power cord for that hub.

  • Page 30: Running Connectivity Tests

    Troubleshooting Hub Maintenance Tasks Running Connectivity Tests Both the hub and cabling can be tested by running an end-to-end communica- tions 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.

  • Page 31: Managing The Hub

    This chapter describes the features available from an ASCII console. Topics include: setting up the ASCII Console console command reference The HP Hub-16M has SNMP that allows you to manage the hub using one of the following utilities: an ASCII console CiscoWorks any SNMP-compliant network management product except HP AdvanceStack Assistant.
  • Page 32 [Enter]. Remotely, Using Telnet The HP Hub-16M supports a Telnet console session. Your Telnet syntax depends on your TCP/IP software or your terminal server. By default, Telnet is enabled. You can disable Telnet by using the IPconfig console command described on page 3-7.

  • Page 33: Starting The Console

    [Enter]. Starting the Console The console session starts with a display similar to the following (the actual version numbers may be different): HP J3188A Hub-16M ROM A.01.00 EEPROM A.01.00 HW A.01.00 Use console commands for hub configuration.

  • Page 34: Console Command Reference

    Managing the Hub Console Command Reference Console Command Reference Enter at least the first two letters of a command to execute it, such as HE for the Help command. The Help command displays a screen like the following, listing all commands. Syntax Conventions on Help Screen: <...
  • Page 35 To configure one of the hub’s ports for dedicated use in a backup (redundant) link to another hub. An HP Hub-16M allows you to use any two of its network ports for a redundant link to another hub in your network. The backup link normally carries no traffic, but it is automatically activated if the primary link fails.
  • Page 36 Managing the Hub Console Command Reference CDpstatus To enable or disable the Cisco Discovery Protocol (CDP). The command takes either an ON or an OFF argument. The initial setting is ON. ON enables the protocol. OFF disables it. If no option is chosen, the current status is shown. COunters To display network activity counters for each network port, the hub’s SNMP agent, and the global count for all ports.
  • Page 37 Managing the Hub Console Command Reference DIsconnect To terminate the console session and reset the console port baud rate to be automatically sensed. The command also disconnects the phone link if you accessed the console using modems. IPconfig To set IP (Internet Protocol) configuration parameters on the hub. By default, the hub is configured to use BOOTP (Internet Boot Protocol) to automatically retrieve the IP parameters from a BOOTP server, and to enable Telnet access to the hub’s console interface.
  • Page 38 Novell NetWare IPX Using Novell NetWare IPX The HP Hub-16M is designed to automatically use Novell NetWare’s IPX protocol. If you are using the hub on a Novell NetWare network, no configu- ration of the hub is required for it to communicate with a network management station that is also using the IPX protocol.
  • Page 39 This is done when the hub is powered on. If an IP address is not found, the HP Hub-16M will seek an IP address every ten minutes until it finds an IP address. Set this value to NO to disable this BOOTP process.
  • Page 40 Managing the Hub Console Command Reference network management— also called SNMP event alarms). The start of the table is shown below. Up to ten network management stations can be entered into the table. Entry 0 (zero) is used for the “all managers allowed” entry. Manager Address (IP or IPX) Receive Alarms? All managers allowed...
  • Page 41 Managing the Hub Console Command Reference Example: To add the network management station with IP address 190.40.101.10 to the list and to send alarms to that station, the process would appear as follows: Add entry (A), Delete entry (D), or End changes (E): A Enter Manager Address, or (A) to allow all managers access: 190.40.101.10 Should this manager receive alarms: (Y/[N]):Y Add entry (A), Delete entry (D), or End changes (E): E...
  • Page 42 Managing the Hub Console Command Reference PAssword To set or change the password on the hub. The Password is used to prevent unauthorized access to the hub from network management stations, and through the console interface. The hub is initially shipped without a password.
  • Page 43 Managing the Hub Console Command Reference POrt <port> <ON/OFF> To enable (set to ON) or disable (set to OFF) a hub port. The initial setting for all ports is enabled (ON). You can use the Status command to check the current status of all the ports. The <port> parameter can be: twisted-pair port number XCVR or XC for the AUI port ALL or AL for all ports...
  • Page 44 Managing the Hub Console Command Reference The Late Collision Monitoring option monitors ports for excessive late collisions. If monitored ports experience excessive late collisions, these ports are disabled. See the section on Auto-Partitioning in the chapter that provides the Product Description.
  • Page 45 Managing the Hub Console Command Reference Security and port LEDs flash, the intruder’s MAC address is displayed on the console Status command screen, and an alarm is sent to the authorized network management station(s). Use the First Address Heard—provides medium port security. The hub learns the address of the first device attached to the port and makes it the authorized MAC address.
  • Page 46 Managing the Hub Console Command Reference Configuring Security on a Single Port To set or change the security configuration for a single port on the hub (twisted-pair or AUI), enter and the port’s ID; for example, . The port’s SE 4 current security configuration is displayed, followed by a prompt to change the configuration or not.
  • Page 47 Managing the Hub Console Command Reference pair ports; that is, the security parameters will all be set to NO (configured address selection methods, and learned or assigned addresses are not changed). If you select , a table like the following is displayed: assign Each port ( ADDRESS SELECTION...
  • Page 48 Managing the Hub Console Command Reference Send Alarm when intruder detected? and Eavesdrop prevention?: These parameters are defined earlier in the chapter under “Security Configuration Parameter Definitions”. The values you select for these parameters will be applied to all the twisted-pair ports for which you have selected (or retained) the address selection method.
  • Page 49 Managing the Hub Console Command Reference For Network Management Security. The security violations are indicated by the Security LED flashing and the violating network management station’s address being displayed on the Status command screen. A network management security violation occurs when a network manage- ment station that is not on the authorized management station list attempts to issue SNMP “set”...
  • Page 50 Managing the Hub Console Command Reference Redundant Power Supply status: • NOT CONNECTED means the RPS is not attached to the device. • CONNECTED/FAULT means the RPS is attached but is reporting an error. • CONNECTED/GOOD means the RPS is attached with no errors, but has not been enabled.
  • Page 51 N o t e The destination device must be able to send an IEEE 802.2 Test Response packet upon receipt of an IEEE 802.2 Test command packet. The HP Hub- 16M will respond with the correct packet. You will be prompted for the 12-digit hexadecimal MAC address of the destination device.

  • Page 53: A Cables And Connectors

    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.
  • Page 54 92268D (4 pair, 32 meters) X switch 92268N (4 pair, 300 meters)* * The maximum total length of any twisted-pair segment is 100 meters. You can contact your HP authorized dealer or call HP at 1-800-538-8787 to order these parts.

  • Page 55: Twisted-Pair Cable/Connector Pin-Outs

    Cables and Connectors Twisted-Pair Cable/Connector Pin-Outs 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).

  • Page 56: Rs-232 Connector And Cable Pin-Outs

    This appendix lists cables that have been tested and verified for use with the HP Hub-16M. 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.

  • Page 57: Minimum Cable Pinout For Ascii Console Connection

    Cables and Connectors RS-232 Connector and Cable Pin-Outs Minimum Cable Pinout for ASCII Console Connection PC end Hub end 9-pin male 9-pin male RS-232 Modem Cable Modem end Hub end 25-pin male 9-pin male Signal CD OR DCD DRS–typically on V.24 (European) modems (not connected)

  • Page 58: Twisted-Pair Cable Pin Assignments

    Cables and Connectors RS-232 Connector and Cable Pin-Outs Twisted-Pair Cable Pin Assignments Twisted-Pair Straight-Through Cable Hub End (MDI-X) Computer or Transceiver End (MDI) Signal Pins Pins Signal (receive +) (transmit +) (receive –) (transmit –) (transmit +) (receive +) (transmit –) (receive –)

  • Page 59: Physical

    Specifications Physical Width: 42.5 cm (16.8 in) Depth: 23.8 cm (9.4 in) Height: 4.36 cm (1.7 in) Weight : 8 lbs and 7 oz. (8.7 lbs) Electrical The hub automatically adjusts to any voltage between 100-127 and 200-240 volts and either 50 or 60 Hz. ac voltage: 100–127 volts 200–240 volts...

  • Page 60: Connectors

    Specifications Connectors The RJ-45 twisted-pair ports are compatible with the IEEE 802.3 Type 10Base-T standard. Electromagnetic Emissions: FCC part 15 Class A EN 55022 Class A / CISPR-22 Class A VCCI Level I Complies with Canadian EMC Class A requirements. Complies with Australia/New Zealand EMC Class A requirements.

  • Page 61: C Modem Configuration

    Modem Configuration Before installing the modems (one attached to the hub and one attached to the terminal/PC), configure them by either issuing the appropriate AT command or by setting the modem’s switches, as described in the tables in the rest of this appendix. Hayes Smartmodem Optima 28.8 (V.34) Hayes ACCURA 288 V.34 + FAX Hayes V-Series ULTRA Smartmodem 14400...
  • Page 62 Modem Configuration Practical Peripherals PM288MT II V.34 At the hub end: Issue the following AT command: A0101: AT&F0&C2S0=1Q2&D3&W0 Next Rev: AT&F0&C1S0=1Q2&D3&W0 At the user end: Issue the following AT command: AT&F0&W0 Intel 14.4EX At the hub end: Set the A/B switch to A Issue the following AT command: AT&F0&R1&W0 At the user end:...

  • Page 63: D Network Addressing

    Communication Between the Hub and Network Management Station The HP Hub-16M can be managed over the network by CiscoWorks network management software. These hubs can also be managed by any other network management products that comply with the Simple Network Management Protocol (SNMP) standard and have standard SNMP MIB-browser function- ality.

  • Page 64: Ipx Addressing For Novell Netware

    The Novell NetWare network operating system uses a proprietary protocol called Internetwork Packet Exchange (IPX). The IPX protocol firmware is always available on an HP Hub-16M; it becomes active when the hub gets an IPX address. The IPX address consists of a network number and a device identification.

  • Page 65: Device Ip Configuration

    Network Addressing IP Addresses for IP and Non-IP Networks Country Phone Number/E-Mail/URL Company Name/Address United 1-703-742-4777 Network Solutions, Inc. States/Coun- questions@internic.net Attn: InterNIC Registration Service tries not in http://rs.internic.net 505 Huntmar Park Drive Europe or Herndon, VA 22070 Asia/Pacific Europe +31 20 592 5065 RIPE NCC Kruislaan ncc@ripe.net...

  • Page 66: Using Bootp

    Network Addressing Using BOOTP Time To Live: The number of IP routers a packet is allowed to cross before the packet is discarded. The default value is 32. Increase this value if the hub is managed from a network management station that is more than 32 routers away.

  • Page 67: Bootp Table File Entries

    If you have multiple hubs that will be using BOOTP to get their IP configuration, you should use a unique symbolic name for each hub. is the “hardware type” tag. For the HP 10Base-T hubs, set this to ether (for Ethernet). This tag must precede the ha tag.

  • Page 69: E Backup Links

    To maintain the integrity of such a critical link, the HP Hub-16M offer a backup link feature. A backup link is a separate cable run between two hubs that is automatically enabled if the connection designated as the primary link fails.

  • Page 70: Limitations

    Backup Links How Backup Links Work Limitations Each hub can monitor a single backup link (only one backup link can be configured on each hub). But, the hub may be at the remote end of one backup link and at the monitoring end of a backup link to a different hub. A given hub should be connected to the remote end of no more than two backup links.

  • Page 71: Examples Of Backup Links

    Backup Links Examples of Backup Links Examples of Backup Links The Backup Link function allows you to specify a backup link between two devices in case the primary link fails. An example of a backup link is shown below. Hub to a Server Primary Link (fiber) Backup Link (twisted pair) Server...
  • Page 72 Backup Links Examples of Backup Links When the primary link is repaired, you must re-enable the primary port. It is not re-enabled automatically. When the primary port is enabled, the backup port is automatically disabled and returned to backup mode. See “Reactivating the Primary Link”...

  • Page 73: Configuring A Backup Link

    Backup Links Configuring a Backup Link Configuring a Backup Link Configure the Monitoring Hub Only. All configuration of the backup links feature is performed from CiscoView or the ASCII console. On the “remote” device, you only need to make sure the ports used for the primary and backup links are both enabled.

  • Page 74: Identifying The Backup Link

    Backup Links Identifying the Backup Link Enable the primary port in software. This step is necessary because until you have completed step 3 (connecting the cables), the test packets cannot be successfully sent through the primary port. The primary port will therefore be disabled and the backup port will be activated.

  • Page 75: Reactivating The Primary Link

    Backup Links Reactivating the Primary Link Reactivating the Primary Link When the primary link is repaired, you can use any of the following methods to re-enable the primary port: From the ASCII console, select “Port/Segment Configuration”, then “Disable and enable ports option”, then enable ports. From CiscoView, re-enable the primary port.

  • Page 77: F Security Information

    Understanding Network Security In addition to password protection and network access protection, the HP Hub-16M provides two major types of per-port security: Intruder Prevention for inbound data (from the end user to the hub).

  • Page 78: How Intruder Prevention Works

    Security Information How Intruder Prevention Works How Intruder Prevention Works Intruder Prevention stops an unauthorized computer (or other device) from actively gaining access to the network. When a port is configured for Intruder Prevention, the hub examines the source address of each packet coming in through that port and compares it with the authorized MAC address.
  • Page 79 Security Information How Eavesdrop Prevention Works Assigning the Authorized MAC address You can assign an authorized MAC address by entering it manually at the hub console interface or at the network management station. Assigning a specific address provides the maximum control of the port’s authorized MAC address. The Intruder Prevention and Eavesdrop Prevention security that you have configured for that port is implemented as soon as the address is assigned.Learning the Authorized MAC address...

  • Page 80: Setting Inbound Security With Intruder Prevention

    PC 202 (Intruder). (For illustration purposes, the numbers 101, and 202 are used to represent 12-digit hexadecimal MAC addresses.) The HP hub compares the authorized MAC address, 101, to the source address of the packet received from the Intruder, 202. The hub...

  • Page 81: Auto Port Disable

    The auto port disable feature compares the authorized MAC address of the port to the source address of the packet inbound to the hub at that port. If the authorized address and the source address do not match, the HP hub will automatically disable the port.

  • Page 82: Setting Outbound Security With Eavesdrop Prevention

    CSMA/CD network requirements are met. However, the port will correctly record the invalid data packet received as a CRC error. An end-user attached to an HP hub implementing Eavesdrop Prevention data security will normally record a high number of CRC errors on the computer card statistics.
  • Page 83 Security Information Setting Outbound Security with Eavesdrop Prevention...

  • Page 85: G Safety And Regulatory Statements

    Make sure that the power source circuits are properly grounded, then use the supplied power cord to connect the HP Hub-16M to the circuit. See the Safety Statements in this chapter.

  • Page 86: Power Precautions

    Safety and Regulatory Statements Power Precautions N o t e 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. The mark is your assurance that the power cord can be used safely with the hub.

  • Page 87: Safety Information

    Safety and Regulatory Statements Safety Information Safety Information 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.

  • Page 88: Informations Concernant La Sécurité

    Safety and Regulatory Statements Informations concernant la sécurité Informations concernant la 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. WARNING Dans la documentation, un WARNING indique un danger susceptible d'entraîner des dommages corporels ou la mort.

  • Page 89: Hinweise Zur Sicherheit

    Safety and Regulatory Statements Hinweise zur Sicherheit Hinweise zur Sicherheit 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 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.

  • Page 90: Considerazioni Sulla Sicurezza

    Safety and Regulatory Statements Considerazioni sulla sicurezza Considerazioni sulla sicurezza Simbolo di riferimento alla documentazione. Se il prodotto è contras- segnato da questo simbolo, fare riferimento alla documentazione sul prodotto per ulteriori informazioni su di esso. WARNING La dicitura WARNINGdenota un pericolo che può causare lesioni o morte.

  • Page 91: Consideraciones Sobre Seguridad

    Safety and Regulatory Statements Consideraciones sobre seguridad Consideraciones sobre seguridad Símbolo de referencia a la documentación. Si el producto va mar- cado 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.

  • Page 92: Safety Information (Japanese

    Safety and Regulatory Statements Safety Information (Japanese) Safety Information (Japanese)

  • Page 93: Regulatory Statements

    Safety and Regulatory Statements Regulatory Statements 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.
  • Page 94 Declaration of Conformity Declaration of Conformity The following Declaration of Conformity for the HP J3188A Hub-16M complies with ISO/IEC Guide 22 and EN 45014. The declaration identifies the product, the manufacturer’s name and address, and the specifications that are recog-...
  • Page 95 Index Numerics CDpstatus command … 3-6 clearing a password … 2-5 50-ohm terminator Collision LED … 1-4, 1-12, 2-3 for a ThinLAN cable segment … 1-10 collision monitoring … 3-13 collisions definition … 3-6 command … 3-9 commands Activity LED … 1-4, 1-12, 2-5 BAckup …...
  • Page 96 HElp command … 3-4, 3-6, 3-11 patterns showing error conditions … 2-3 Help command … 3-4 Power … 1-12 HP AdvanceStack SNMP Module twisted-pair ports … 1-13 LED pattern during self-test … 2-3 verifying hub operation … 1-4 HP Management Module list cables for …...
  • Page 97 pin-outs minimum cable … A-5 MAC address POrt command … 3-13 use in IPX address … 3-8, D-2 Port LED … 1-13 MAnagers command … 3-9 Port LEDs … 1-4, 2-3 MDI switch port LEDs using … 1-8 twisted-pair … 1-13 MDI-X switch ports using …...
  • Page 98 security ThinLAN port authorized … F-2 and 50-ohm terminator … 1-10 auto … F-5 troubleshooting detailed description … F-1 approaches … 2-1 eavesdrop … F-2 diagnosing with the LEDs … 2-2 intruder … F-2 LED patterns showing errors … 2-3 send alarm …...
  • Page 100 Technical information in this document is subject to change without notice. © Copyright 1997 Hewlett-Packard Company Printed in Singapore 6/97 Manual Part Number J3188-90001 *J3188-90001*...

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