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HP Fiber-Optic Hub Plus Reference Guide

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1. telco rack 2 2 Installation For Rack or Cabinet Mounting 1 Using a Phillips or cross head screwdriver attach the mounting brackets to the hub with 10 mm M4 screws included in accessory kit Note that the hub s case and the mounting brackets are designed to allow you to rack mount the hub with either the back or the front facing out 2 Position the hub in the rack or cabinet and slide it up or down until the rack holes line up with the bracket holes Then attach the hub to the rack with Yg inch number 12 24 screws included in the accessory kit Some cabinets require number 10 32 screws instead available as p n 2680 0302 Make sure you have screws that fit your cabinet or rack before mounting the hub Mounting bracket Front facing out 10 mm M4 screws Mounting bracket inch number 12 24 screws Back facing out Installation 2 3 For Wall Mounting Using a Phillips or cross head screwdriver attach the mounting brackets to the hub with 10 mm M4 screws included in the accessories kit Then attach the hub to a wood surface minimum V gt in plywood or equivalent with inch number 12 wood screws or equivalent not included Mounting bracket Pd 10 mm M4 screws Flat on wall Mounting bracket Straight out from wall 10 mm M4 screws For Table Mounting Attach the self adhesive rubber feet to the bottom of the hub Set the hub on a table near a power
2. C 2 Modem Configuration Network Addressing The HP Fiber Optic Hub Plus can be managed over the network by HP network management products and any other network management products that use the Simple Network Management Protocol SNMP The communication between the SNMP network management station and the hub takes place using the network layer protocols IPX for Novell networks or IP for TCP IP networks Which protocol you use depends on the protocol being used by the network management station Additionally if the network management station is on the other side of a router from your hub the protocol you run on both the hub and the network management station depends on which protocol the router can handle The network layer communications require that the hub have a network layer address This appendix provides some background information on IPX and IP addressing 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 the HP Fiber Optic Hub Plus it becomes active when the hub gets an IPX address The IPX address consists of a network number and a device identification The address is automatically assigned to the hub as follows no IPX configuration of the hub is necessary m The network number is automatically assigned by a router or file server on the network that is running th
3. GND 5 7 GND PEN CTS m DSR 8 DCD 22 RI 23 DRS Cables and Connectors A 7 RS 232 C Cable for HP 110 Minimum Pin Out HP110 end Hub end 9 pin male 25 pin male Tx 2 2 Tx Rx 3 7 3 Rx GND 7 7 GND 5 CTS 6 DSR 8 DCD 22 RI 23 DRS Null Modem Adapter use with a modem cable when connecting a terminal Minimum Pin Out Modem cable end Hub end 25 pin female 25 pin male pe 2 P i qox As A s Rs Ls 64 p E 20 20 Pe 7 DTR pin 20 and RTS pin 4 must be on or high on your terminal or in your terminal emulation program A 8 Cables and Connectors RS 232 C Modem Cable Minimum Pin Out Modem end Hub end 25 pin male 25 pin male Signal 2 2 TX gt 3 Rx 4 4 RTS gt 5 CTS 6 6 DSR T KA GND 8 m 8 CD OR DCD 20 m 20 DTR 22 22 RI 23 23 DRS typically on V 24 European modems Cables and Connectors A 9 Loopback Connectors The four loopback connectors shown below are useful for troubleshooting your HP Fiber Optic Hub Plus The connectors for the AUI ThinLAN and console ports are included in the HP Extended LAN Troubleshooting Kit product number HP 28689B or all four can be purchased separately Contact your HP authorized LAN dealer or your local HP sales office for assistance For Fiber Optic Ports HP Fiber Optic Loopback Cable HP part number 5041 3738 For AUI Port lt a HP part number 28663 6300
4. Ping To run a test of the path between the hub and another device that responds to IP packets The hub sends Internet Control Message Protocol ICMP Echo Request packets to another node with the specified IP address and waits for Echo Response packets in return When you run the Ping command you will be prompted for m the IP address of the destination device in the format X X X X m the number of packets to send m the timeout value the number of seconds to wait for a response If any errors are reported during this test there may be a fault on the path used during the test or on the destination device For more information about testing network links see chapter 4 Troubleshooting POrt lt port gt lt ON OFF gt To enable set to ON or disable set to OFF a hub port The initial setting for all ports is enabled To simplify network changes unused ports need not be disabled You can use the Status command to check all the ports The lt port gt parameter can be a fiber optic port number from 1 to 8 AUI or AU for the AUI port THINLAN or TH for the ThinLAN port ALL or AL for all ports Example PO 1 OFF This disables port 1 REset To run a hub self test and reset the hub This command also resets all the network statistic counters and the time since last reset to O see the Counters command The current configuration is unchanged The hub is not accessible from network management software while it is being te
5. 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 It has been tested and found to comply with the limits for a Class A computing device pursuant to Part 15 of FCC Rules which are designed to provide reasonable protection against such interference when operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be required to correct the interference Tf this equipment causes interference to radio reception which can be determined by unplugging the power cord from the equipment try these measures Re orient the receiving antenna Relocate the equipment with respect to the receiver Plug the equipment and receiver into different branch circuits Consult your dealer or an experienced technician for additional suggestions VCCI Class 1 For Japan Only CORRI ERC CS TAM O CHA AN SNARE CL ae HUI TOE PE Ok A AW GL ro te Sms SEES EB ag VCCI ARICA Lcd 0 y KAT FEMME RIE OMB LMR TEN FT St FI a VSS IC RMB GASTEBHOET DURA BIC HE TELOR RWOELTFAW Regulatory Statements 1 Declaration of The following Declaration of Conformity complies with Conformit ISO IEC Guide 22 and EN 45014 It identifies the product y the manufacturer s
6. You can also receive information about a command at the console prompt by entering HE the Help command followed by the first two characters of the command for example HE PO for help on the Port command 2 14 Installation Operation The HP Fiber Optic Hub Plus is designed to operate unattended A console interface is provided if you wish to customize the hub s configuration monitor its activity or run diagnostics You can also perform these and other functions with the HP network management products from a network management station anywhere on the network See your HP network management product documentation for more information Starting the Console Session To start the console session 1 Make sure a console is connected and configured as described in Console Connection in chapter 2 of this manual 2 Press RETURN for the prompt The console session prompt is You may have to press RETURN several times while the hub automatically senses the terminal s communication baud rate The console session starts with a display like the following the actual version numbers may be different 8 port fiber optic hub HW A 01 00 ROM A 01 02 EEPROM D 01 00 Enter HE for help Operation 3 1 Console Commands Enter 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 the commands 8 port fiber optic hub Ent
7. 1 7 2 Installation Installation Summary 2 1 1 Mo ntiheihub s se eke ey resident E el 2 2 2 Plug in the hub and verify its operation 2 5 3 Connect the hub to devices and networks 2 6 Fiber Optic Port to AUL Port ec iii anar RR RR REL E 2 6 ThinLAN Port to ThinLAN Port 2 6 Fiber Optic Port to Fiber Optic Port 2 6 Pott Connections ut a de vor UR Ew p TURO SR Y 2 7 Fiber Optic Port sk Y ESS Y RE eR Eq E 2 7 ThinLAN POft 222934 RE E34 Bas une ROV RO e s 2 9 AULPOotrt v cage REMISE RES Ne m ER Eure Ee R 2 10 4 Customize the hub s configuration if needed 2 11 Console Connection uos x deos een Rime 2 11 Configuration Commands 2 14 Operation Starting the Console Session 3 1 Console Commands 3 2 HED e rehe ta e 99 9909 05 es te E Ordo a een se 3 2 BACKUP e air a NT eme Y ues 3 2 COUNT 244 W e A e a 3 4 Disconnect irritante heads 3 4 IPCOB IS e o iure wok 4e De Gee dni A 3 5 EOOPDACK ke xo ian ire dre DUE ed eh 3 6 PASSWOI e w ap pg eu boss E E A ARA 3 7 PINGS 25 esi e presi eS pem doc di se 3 8 POR isso RARA ER WA EUR de ER Owe ee KE S 3 8 RESET Dis ote men ee SP ER ile ot ani AZA ad ea 3 8 SP ed iras a Sit pela e STE RUE S 3 0 STAS Lo Cay Dade sues oe OP 4 oe ug vex n E 3
8. Sehen Sie sich das Produkt an und lesen Sie die begleitende Dokumentation damit Sie vor der Installation und dem Betrieb mit den Sicherheitsmarkierungen und Anleitungen vertraut sind Bitte lesen Sie das Kapitel mit der berschrift Hinweise zur Sicherheit Considerazioni sulla sicurezza Esaminare il prodotto e la relativa documentazione per familiarizzarsi con gli avvisi e le istruzioni di sicurezza prima dell installazione e dell uso Vedere la sezione di questo documento intitolata Considerazioni sulla sicurezza Consideraciones sobre seguridad Antes de instalar y hacer funcionar el producto se deben estudiar el producto y la documentaci n relacionada a fin de familiarizarse con las indicaciones de advertencia e instrucciones Ver la secci n del documento titulada Consideraciones sobre seguridad HP 28682A HP Fiber Optic Hub Plus Installation and Reference Guide Kr HEWLETT PACKARD HP Part Number 28682 90001 Printed in U S A March 1992 Edition 2 E0392 In This Guide This guide contains information to help you install configure and troubleshoot your HP 28682A Fiber Optic Hub Plus The guide is organized as follows Chapter 1 provides a brief introduction to the hub It describes important product features what you should have received with your hub and an overview of how the hub works Chapter 2 provides hub installation instructions It describes in detail the steps that you should f
9. tre soumis des surtensions transitoires dangereuses telles que la foudre ou des perturbations dans le r seau d alimentation public Manipulez les composants m talliques du r seau avec pr cautions Aucune pi ce contenue l int rieur de ce produit ne peut tre r par e par l utilisateur Tout d pannage r glage entretien ou r paration devra tre confi exclusivement un personnel qualifi Cet appareil ne comporte pas de commutateur principal la mise sous tension est effectu e par branchement du cordon d alimentation 2 Informations concernant la s curit Hinweise zur Sicherheit Sicherheitssymbole Symbol f r Dokumentationsverweis Wenn das Produkt mit diesem Symbol markiert ist A schlagen Sie bitte in der Produktdokumentation nach um mehr Informationen ber das Produkt zu erhalten VORSICHT Eine VORSICHT in der Dokumentation symbolisiert eine Gefahr die Verletzungen oder sogar Todesf lle verursachen kann ACHTUNG ACHTUNG in der Dokumentation symbolisiert eine Gefahr die das Ger t besch digen kann Fahren Sie nach dem Hinweis VORSICHT oder ACHTUNG erst fort nachdem Sie den Gefahrenzustand verstanden und die entsprechenden Ma nahmen ergriffen haben Dies ist ein Ger t der Sicherheitsklasse I und verf gt ber einen sch tzenden Erdungsterminal Der Betrieb des Ger ts erfordert eine ununterbrochene Sicherheitserdung von der Hauptstromquelle zu den Ger teingabeterminals den Net
10. D ve EE 3 p OO e to another network HP HP Fiber Optic Fiber Optic Hub Hub ess mp lemme OOOO PO Le 8 00009090 f 00090900 7 Bl OLA E HOO O B E 6 Backup Links Sample 2 Redundant Fiber Optic Links Using a Single Fiber Optic Hub In this topology redundant fiber optic links are provided between a single HP Fiber Optic Hub Plus and an HP EtherTwist Hub Plus 48 The primary link consists of a fiber optic cable from the fiber optic hub to an HP Fiber Optic Transceiver on the Hub Plus 48 The backup link consists of two cable segments a fiber optic segment from the fiber optic hub to an HP Fiber Optic Transceiver on an HP EtherTwist Hub Plus and a thin LAN cable from the Hub Plus to the Hub Plus 48 Because the Hub Plus repeats all the signals it receives it can be considered as just a connector in the backup link The backup link configuration would be performed on the fiber optic hub with address of the Hub Plus 48 used for the Remote Station Address configuration parameter Building 1 Building 2 to other to other network network devices devices HP EtherTwist HP Hub EtherTwist Hub ses qum A JA El F M mE O HP X HP EtherTwist Fiber Optic Hub 48 Hub primary link backup link Backup Links E 7 Safety Information Safety Symbo
11. Fiber Type Multimode Multimode Attenuation Grade 4 0 dB km 4 0 dB km Numerical Aperture 0 275 0 20 Modal Bandwidth 150 MHz km 150 MHz km Note Attenuation and modal bandwidth values are at 850nm wavelength for both fiber sizes Length Limit The IEEE FOIRL fiber optic inter repeater link standard limits the length of the fiber optic cable between two hubs to one kilometer In most network configurations use the 1 km length maximum as a rule of thumb Thin LAN Cable Requirements The thin coaxial cables used with the HP Fiber Optic Hub Plus ThinLAN port must comply with the IEEE 802 3 Type 10Base2 requirements Some RG 58 A U or RG 58 C U cable meet these requirements The maximum length of a single thin coaxial cable segment is 185 meters A 4 Cables and Connectors AUI Cable Minimum Pin Out Transceiver end Hub end Signal 15 pin female 15 pin male 2 2 Control In circuit A 3 3 Data Out circuit A 4 4 Data In circuit Shield common drain 55 Data In circuit A 6 6 Voltage Common 9 9 Control In circuit B 10 0 Data Out circuit B 12 12 Data In circuit B 13 13 Voltage Plus For this connection you can use m HP 92264D l meter thin AUI Male O extension pin 4 not connected Connector m HP 92254A through H 6 meter through 48 meter thick AUI cables m HP 92254J 5 meter thin AUI cable ya pin 4 not connected Female 0 988333 Connector S 000009 0 Some longer cables may have all 15 p
12. Plus is a 10 Mbit s multiport repeaters and is designed to be compatible with the IEEE 802 3 Fiber Optic Inter Repeater Link FOIRL standard It can form a fiber optic star backbone with HP EtherTwist or other Type 10Base T subnetworks or in combination with thin or thick coaxial cable networks Or it can directly connect PCs and computers that have a fiber optic adapter card or a fiber optic transceiver attached See the HP EtherTwist Technical Reference Guide p n 5091 3237E for network configuration guidelines Features The HP Fiber Optic Hub Plus has the following features m The following ports Eight fiber optic ports each consisting of a transmit and receive pair of ST connectors for 62 5 125 pm or 50 125 um fiber optic cable A ThinLAN port for connection to thin LAN coaxial cable An AUI port for connection to an external transceiver This additional port can be used with the appropriate transceiver to connect any media such as twisted pair thick or thin coaxial and fiber optic cable It can be used at the same time the other ports are being used Note that all the network ports fiber optic ThinLAN and AUI are active and can be used at the same time An RS 232 C console port for attaching a terminal or terminal emulator that can be used to customize the hub s configuration monitor hub activity and status and run tests of the hub Console access can be either local by direct attachment to the console
13. a port if it experiences excessive collisions greater than 30 consecutive collisions The port will automatically return to operation if the excessive collision condition is removed and normal traffic is restored Auto segmentation can also be caused by improper termination of cabling attached to the AUI or ThinLAN ports or by having nothing connected to the ThinLAN port when it is enabled If a port is auto segmented its port LED and the Fault LEDs will flash A segmented ThinLAN port will not cause the Fault LED to flash unless Thinwatch has been explicitly enabled with the Thinwatch console command The Thinwatch command is described in chapter 3 If a port is auto segmented only the LAN segment attached to that port is affected The other LAN segments will operate normally If a port is disabled explicitly by using the console port or from an HP network management station 1t must be enabled explicitly It will not be enabled automatically 1 6 Introducing the HP Fiber Optic Hub Plus Firmware Enhancements Hewlett Packard continually tests and improves its products When firmware enhancements are made to the HP Fiber Optic Hub Plus you will be able to easily update it with the new code The update can be made from a PC attached to the hub s console port directly or through a modem or the hub s new code can be downloaded over the network The update procedures are described in documents that come with the new code Contac
14. check the LEDs immediately When the hub is operating LED patterns that indicate a hub or network problem are shown in the table on the next page 4 2 Troubleshooting Diagnosing With the LEDs LED patterns indicating problems Power Col Fault Port Diagnostic Tips A OFF Check power cord and power source If OK replace the hub Very frequent or solidly ON Very frequent collisions could indicate a network fault a cable not properly terminated or SQE test not disabled A hub hardware failure was detected during self test Replace the hub Flashing Flashing A port has been auto segmented because of too many collisions or a ThinLAN port not properly terminated or not connected Check cable terminations connections SQE Test setting transceivers and attached network devices OFF or flashing intermit tently on a port in use Check cabling on the port indicated For a fiber optic port also check for correct Tx and Rx connections Try switching them Use the Status console command to check if The port has been manually turned off In this case turn the port back on The port has LOW light status In this case check light status on the device at the other end of the fiber optic link if it is LOW the link is broken This LED is not important for the diagnosis Troubleshooting 4 3 Diagnostic Tests Testing the Hub Only Use one of th
15. m To test links with HP StarLAN 10 network hardware see the HP StarLAN 10 Hardware Troubleshooting Guide p n 5959 2258 Testing Fiber Optic Cabling If a fiber optic port LED is not ON or the Status command shows LOW light check the physical connections of the cable segment Use a fiber optic power meter such as the HP 8140A Optical Loss Test Set to check that cable attenuation end to end is less than the maximum listed for your fiber in the optical specifications in chapter 1 of this manual If the cabling is found to be OK and the Status command continues to show LOW light then test the ports at both ends see Testing the Hub s Ports above 4 6 Troubleshooting Cables and Connectors This appendix lists cables that have been tested and verified for use with the HP Fiber Optic Hub Plus The minimum pin outs are shown in case you wish to use an unlisted cable or manufacture your own 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 Loopback connectors for all hub ports are also shown in this appendix These topics are discussed m HP cables m Other standard cables m Fiber Optic cable requirements m Thin LAN cable requirements m AUI cable m Console connector and cable pin outs m Loopback connectors Cables and Connectors A 1 HP Cables Cable Function Cable Type Connecting to the
16. network Port Type on Terminal PC or Modem HP Product Number Connecting the hub s fiber optic ports to a patch panel or device with SMA connectors ST SMA hybrid fiber optic cable 5181 6181 1 meter duplex fiber optic cable Connecting hub to hub in arack IEEE Type 10Base2 Thin coaxial cable 92214U 0 5 meter including BNC T connector Connecting a transceiver to the AUI port AUI cable 92264D 1 meter 92254A through H 6 48 meters 92254J 5 meters Connecting to the console port Connect a terminal or PC to the console port RS 232 C Crossover cable 25 pin female 13242GT 40242GT 25 pin male 13242H 9 pin male 24542Gt 9 pin female for HP 110 92221Pt Straight through RS 232 C modem cable Connect a modem to the console port 25 pin female 13242M 13242N 17355M 25 pin male 31391A An AUI cable is not necessary with some transceivers such as the HP 28685A or HP 28685B EtherTwist Transceivers the HP 28641B ThinLAN Transceiver and the HP 28683A Fiber Optic Transceiver These transceivers attach directly to the AUI port of a network device For these cables the signals DTR pin 20 and RTS pin 4 must be on or high terminal or in your terminal emulator A 2 Cables and Connectors on yo Other Standard Cables Cable Function Port Type on Terminal PC or Modem Stan
17. port or remote through a modem connection Introducing the HP Fiber Optic Hub Plus 1 1 Features continued m Compatibility with the IEEE 802 3 Fiber Optic Inter Repeater Link FOIRL standard and support for both IEEE 802 3 and Ethernet protocols m Automatic segmentation of ports that are experiencing network communication problems This improves network integrity and aids in fault isolation Segmented ports automatically resume operation when the problems are corrected See Auto Segmentation later in this chapter m Support for a backup link to another hub an automatically activated redundant connection to enhance network fault tolerance m self test for fault identification when the hub is powered on or when reset from the console or from a network management station m LEDs on both the front and back panels for easy interpretation of the hub s status m A power supply that automatically adjusts to the voltage range of the ac power being supplied to the hub 90 120 volts or 200 240 volts No voltage range setting or fuse change is needed m A factory assigned station address also called MAC address Ethernet address or physical address allowing the hub to respond to 802 2 Test packets The hub can also be configured with an IP address and can respond to an ICMP Echo Request message also called Ping m Can be managed remotely from a network management station that supports SNMP over IP using the co
18. rack or wall mounting m four inch number 12 wood screws or equivalent for wall mounting only Installation 2 1 1 Mount the hub 1 Make sure the hub s power cord is correct for your country s ac power supply Do not plug the power cord into the power supply until the hub is mounted Note that the hub does not have a power switch the hub is powered on when the power cord is plugged in 2 As described on the next page mount the hub in a rack or on a wall by using the mounting brackets or place it on a table Before mounting the hub plan its location and orientation relative to other devices and equipment Also consider management of the cabling you will be attaching and consider access to the ports you will be using In the example below the hub is mounted in a rack with other HP EtherTwist family devices and a cable guide unit Order the HP EtherTwist LAN Rack HP 46298D and the Cable Guide HP 35199D If you are using a modular adapter on an EtherTwist hub position that hub at least one rack unit apart from any HP Fiber Optic Hub Plus for easier port access A Ze 9 o 3 la A ao amp e 9 HP network Cable guide l A B devices hubs 2 bridges etc a id rd J e o Ze a 1 Thin coaxial cable Uo backbone B Standard 19 inch i
19. radius of the fiber optic cable must be 50 mm 2 inches or greater Do not wrap the cable around sharp edges The cable must be free of kinks twists and jacket irregularities Cable connectors and hub receptacles that are not in use should be covered with dust covers Installation 2 7 To attach an ST type connector 1 Remove the plastic dust covers if present from the cable s connector and the hub s receptacle 2 Align the small key on the inner shaft of the cable s connector with the slot at the bottom of the hub s receptacle 3 Push in to slide the key into the slot Then twist the outer cap clockwise until the two keys at both sides of the receptacle fit into the two slots on the cap Continue to push in and then twist clockwise until the keys are held in the cap s slots To remove an ST type connector from a receptacle 1 Grasp the outer cap with thumb and forefinger above and below It is easier to fit either your thumb or forefinger between the horizontal rows of receptacles than to fit your fingers between connectors at left and right 2 Push in and twist the cap counterclockwise This releases the receptacle s keys from their slots at both sides 3 When the keys are released pull the connector until it is completely free Use dust covers on connectors and receptacles that are not in use 2 8 Installation ThinLAN Port 1 Attach a thin LAN cable section to one side of a BNC T connecto
20. secure m Make sure that transmit and receive fibers are correctly connected to the Tx and Rx receptacles Try switching them if the Port LED is OFF or FLASHING Troubleshooting 4 1 Basic Troubleshooting Tips continued m Make sure that fiber optic cables are of the correct type 62 5 125 pm or 50 125 um m If the ThinLAN port is being used make sure that the port is properly terminated See ThinLAN Port Connection in chapter 2 m If the ThinLAN port is not being used make sure that Thinwatch is disabled If Thinwatch is enabled on an unused ThinLAN port the hub will operate but the Fault LED will flash Use the console s Thinwatch command m lfa transceiver is connected to the AUI port of the hub make sure its switches are correctly set according to its instructions Make sure the SQE test is disabled m Jf the console port does not work see Console Connection in chapter 2 m If you are using IP communications make sure that your IP configuration parameters are correctly set Use the console s IPconfig command m Check LEDs For descriptions see Back of the Hub in chapter 1 When power is cycled all LEDs should go ON momentarily and then go into their normal operational states If all the LEDs do not go ON an LED may be burned out or the hub is faulty and must be replaced Whenever you suspect a burned out LED cycle power by unplugging the hub and then plugging it in then
21. 1 The following pins are connected S m Pin 3to pin 5 m pin lO to pin 12 For ThinLAN Port HP part number 5061 4990 BNC T with two 50 ohm terminators attached For Console Port HP part number 5062 3355 The following pins are connected FR m Pin 2 to pin 3 gt m Pin4to pin 5 to pin 8 55 m Pin 6 to pin 20 to pin 22 Ein m Pin 7 to pin 23 mE A 10 Cables and Connectors Specifications Physical Dimensions 42 5 cm by 23 5cm by 4 4 cm 16 8 in by 9 3 in by 1 7 in Weight 2 7 kg 6 0 Ib Electrical The HP Fiber Optic Hub Plus automatically adjusts to any voltage between 90 and 240 volts and any frequency between 50 and 60 Hz ac voltage 100 120 volts 200 240 volts Maximum current 0 8 amps 0 6 amps Frequency range 50 60 Hz 50 60 Hz Environmental Operating Non Operating Temperature 0 C to 55 C 40 C to 70 C 32 F to 131 F 40 F to 158 F Relative humidity 15 to 95 15 to 90 non condensing at 40 C 104 F at 65 C 149 F Maximum altitude 4 6 km 15 000 ft 4 6 km 15 000 ft Cable Interfaces The 16 fiber optic connectors are ST type and are designed to support 62 5 125 um or 50 125 um fiber The ThinLAN ports are compatible with the IEEE 802 3 Type 10Base2 standard The AUI port is compatible with IEEE 802 3 standards The RS 232 C console port conforms to V 22 bis Specifications B 1 Optical Transmitter power Receiver sensitivity Power budget Wavelength Electrom
22. 9 TESINE 6 005 Re to e RA e urn A 3 10 TElinwatch x Syst d aoa OSes ees e EG Ek td EES 3 10 Troubleshooting Basic Troubleshooting Tips 4 1 Diagnosing With the LEDS 4 3 Diagnostic Tests eoo oo Rom RR set e ah 4 4 Testing the Hub Only 6 v 45 2 aus eB ae A 4 4 Testing the Hub s Ports cs sac 4 yo 9 Y wx S 4 4 Testing the Links ose zu u w es SS Er Ran he rare 4 6 Testing Fiber Optic Cabling 4 6 Cables and Connectors HP Cables sacs au eh w ar 5780 hbo eh whe ped de epee hes A 2 Other Standard Cables 5 5c pos x ORE Ro x E Ee ER B eR e ee A 3 Fiber Optic Cable Requirements A 4 Thin LAN Cable Requirements LL A 4 AUT Cable 2 2 2 2 2 di a Gees BE ee be hed ef A 5 Console Connector and Cable Pin Outs A 6 Pin Out for Hub s Console Port Connector A 6 RS 232 C Crossover Cable for Terminal PC with 25 Pin Connector A 7 RS 232 C Crossover Cable for Terminal PC with 9 Pin Connector A 7 RS 232 C Cable for HP 110 oe aa A 8 Null Modem Adapter A 8 RS 232 C Modem Cable A 9 Loopback Connectors sess 40 o Barren E e A A 10 For Fiber Optic Ports pi pw eo e ee e A 10 FOBAUI POT 2 ii Be n ote ee e NR ws A 10 For ThinLAN Port es wi t 2 9m a aaa e ee A 10 Por Console P
23. AUI port or ThinLAN port 1 Attach a loopback connector to each port being tested For a fiber optic port attach a Fiber Optic Loopback Cable to its Tx and Rx receptacles If you have too few Fiber Optic Loopback Cables for ports to test then you can repeat this procedure as necessary to test all the ports For an AUI port attach an AUI loopback connector For a ThinLAN port attach aBNC T connector with two terminators Make sure all connectors are securely attached An improperly attached loopback connector can cause a false failure indication Connect the console See Console Connection in chapter 2 Run the Loopback command See details in chapter 3 Operation If a port with a loopback connector fails the test the hub is faulty and must be replaced To verify the hub s console port Perform the steps in the Test Console Port Procedure under Console Connection in chapter 2 To verify a transceiver used on the AUI port 1 Make sure the transceiver can be used in a loopback test Some transceivers have a switch that can be used to put them in a loopback mode Make sure the transceiver is receiving power from the device to which it is attached Attach a loopback connector to the transceiver that is attached to the hub s AUI port The loopback connector you use depends on the type of transceiver you are using twisted pair thin LAN fiber optic etc Connect the console See Cons
24. To restart the session when the reset process completes press RETURN several times for the prompt 3 6 Operation LOopback To run a loopback test on one or more hub ports 1 Before entering this command attach a loopback connector to each port that you want to test For each ThinLAN port attach a BNC T connector with two terminators For the AUI port attach an AUI loopback connector 2 Enter LO at the console prompt If Fail appears on the console for any port with a properly installed loopback connector then the hub may be faulty and may require replacement See chapter 4 Troubleshooting for more tests that can be run on the hub For loopback connector ordering information see appendix A Cables and Connectors Note Testing a Transceiver The Loopback command can be used to test a transceiver attached to the hub s AUI port Follow the procedures under To verify a transceiver used on the AUI port in chapter 4 Troubleshooting PAssword To set or change the password on the hub The password is used to prevent unauthorized access of the hub from network management stations The hub is initially shipped without a password Follow the prompts to enter a new password or to change the existing password You can use this command if you forget the password To remove an assigned password enter the command then press RETURN without entering any characters at the password prompt Operation 3 7
25. Ur HEWLETT PACKARD HP Fiber Optic Hub Plus Installation and Reference Guide OCopyright Hewlett Packard Company 1992 All rights reserved Hewlett Packard Company makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material This document contains proprietary information which is protected by copyright No part of this document may be photocopied reproduced or translated into another language without the prior written consent of Hewlett Packard The information contained in this document is subject to change without notice Print History First Edition March 1991 Second Edition March 1992 Safety Considerations The product and related documentation must be reviewed for familiarization with safety markings and instructions before installation and operation See the documentation section entitled Safety Information Informations concernant la s curit Ce produit et la documentation s y rapportant devront tre tudi s avant l installation et l utilisation afin de se familiariser avec les symboles et instructions de s curit Reportez vous la section Informations concernant la s curit Hinweise zur Sicherheit
26. agnetic Emissions FCC part 15 Class A CISPR 22 Class A EN 55022 Class A VCCI Class 1 Immunity ESD Radiated Emissions 62 5 125 um fiber 50 125 um fiber 12 dBm nominal 16 5 dBm nominal 17 dBm minimum 21 dBm minimum 30 dBm nominal 30 dBm nominal 27 dBm minimum 27 dBm minimum 10 dB 6dB 820 nm 820 nm in US Canada and Latin America in Europe in Japan prEN 55101 2 1991 IEC 801 2 3kV CD 8 KV AD in Europe prEN 55024 3 1991 IEC 801 3 draft 3 V m in Europe These specifications are legal requirements in the indicated countries Datacomm Declarations United Kingdom The HP 28682A is approved under Approval Number NS G 1234 J 100003 for indirect connection to public telecommunications systems within the United Kingdom Sweden Application and Declaration of Conformity to Swedish requirements has been filed Germany Application for Certification and License approval have been filed B 2 Specifications Modem Configuration HP 35031A Support Link II At the hub end Configure SOFT OPTION 6 to 1 Configure SOFT OPTION 15 to 2 Configure SOFT OPTION 16 to 2 Configure SOFT OPTION 20 to 2 Configure SOFT OPTION 21 to 2 At the user end Configure SOFT OPTION 16 to 2 HP 50759A Support Link Atthehub end For an 8 position switch set switch 4 down all others up For a 4 position switch set switch 2 up all others
27. cedere oltre un avviso di PERICOLO o di ATTENZIONE prima di aver compreso le condizioni di rischio e aver provveduto alle misure del caso Questo prodotto omologato nella classe di sicurezza I ed ha un terminale protettivo di collegamento a terra Dev essere installato un collegamento a terra di sicurezza non interrompibile che vada dalla fonte d alimentazione principale ai terminali d entrata al cavo d alimentazione oppure al set cavo d alimentazione fornito con il prodotto Ogniqualvolta vi sia probabilit di danneggiamento della protezione disinserite il cavo d alimentazione fino a quando il collegamento a terra non sia stato ripristinato Per la messa a terra dei cavi LAN m sela vostra LAN copre un area servita da pi di un sistema di distribuzione elettrica accertatevi che i collegamenti a terra di sicurezza siano ben collegati fra loro m icavi LAN possono occasionalmente andare soggetti a pericolose tensioni transitorie ad esempio provocate da lampi o disturbi nella griglia d alimentazione della societ elettrica siate cauti nel toccare parti esposte in metallo della rete Nessun componente di questo prodotto pu essere riparato dall utente Qualsiasi lavoro di riparazione messa a punto manutenzione o assistenza va effettuato esclusivamente da personale specializzato Questo apparato non possiede un commutatore principale si mette scotto tensione all inserirsi il cavo d alimentazione 4 Considerazi
28. ckup mode See Reactivating the Primary Link in appendix E Backup Links See appendix E for more information on backup links including requirements limitations and sample topologies Operation 3 3 COunters To display counters for each port the global count for all ports and the time elapsed since they were last reset with the Reset command Total Packets The total number of packets and fragments received Collisions The number of times the port was involved in a collision A single collision will be counted by all ports involved so the total collision count may be less than the sum of the port counts CRC Errors The number of packets with invalid Cyclic Redundancy Checksums CRCs The CRC is a calculated value used to check the validity of each packet Alignment Errors The number of incorrectly aligned packets Giant Packets The number of packets larger than 1518 bytes Broadcast Packets The number of packets addressed to station address FFFFFF FFFFFF Note that counter values may be approximate under heavy network traffic consisting of small packets For the error counters depending on the type of error the number of the associated port may not be known In this situation the error is recorded in the global count only 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 mod
29. d Network Addressing D 3 The IP address format is X X X X where each X is an integer between 1 and 255 The integers are separated by decimal points For a given network with its own class C addressing scheme the first three integers of each address must be the same The fourth integer must be unique for each addressed device Do not use 0 or 255 in the fourth position They are reserved integers For three hubs and an HP network management station on the network the class C addresses might be management station 192 1 1 1 first hub 192 1 1 10 second hub 192 1 1 11 third hub 192 1 1 12 See IPconfig in chapter 3 for the IP configuration procedures and descriptions of the parameters D 4 Network Addressing Backup Links Description In some network configurations a critical link exists for example between two workgroups that regularly share or exchange data over the network To maintain the integrity of such a critical link the HP Fiber Optic Hub Plus offers 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 802 2 test packets primary link 802 2 response pac kets hub A hub B monitoring remote hub hub backup link normally inactive The hub on which the redundant link is configured hub A in the illustration is respon
30. d modification or misuse operation outside of the environmental specifications for the product or improper site preparation and maintenance Warranty Limitations HP makes no other warranty either expressed or implied with respect to this product HP specifically disclaims the implied warranties of merchantability and fitness for a particular purpose Some states or provinces do not allow limitations on the duration of an implied warranty so the above limitation or exclusion might not apply to you However any implied warranty of merchantability or fitness is limited to the one year duration of this written warranty This warranty gives you specific legal rights and you might also have other rights which vary from state to state or province to province Exclusive Remedies The remedies provided herein are Customer s sole and exclusive remedies In no event shall HP be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory Some states or provinces do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion might not apply to you Third Party Products HP designed the HP 28682A Fiber Optic Hub Plus to operate with industry standard hardware and software products Warranty 1 HP has conducted limited testing with certain non HP products to determine compatibility with the HP 28682A Fiber Optic Hub Plu
31. dard Cable or Cable Solution Connecting to the console port Connect a terminal or PC to the console port with an RS 232 C cable 25 pin female Attach a null modem adapter Tandy Null Modem Adapter No 26 1496 has been tested to the console port Then attach a straight through modem cable to the null modem adapter 9 pin male Use a Black Box PC AT Serial Printer Cable EVNBPC has been tested OR Attach a null modem adapter Tandy Null Modem Adapter No 26 1496 has been tested to the console port Then attach a modem cable Black Box Cable EVNBMC and Cablex PC Modem Cable have been tested to the null modem adapter Connect a modem to the console port 25 pin female or male port Straight through RS 232 C modem cable standard cable For these cables the signals DTR pin 20 and RTS pin 4 must be on or high on your terminal or in your terminal emulation program Y The required minimum pin out is listed in the section Console Connector and Cable Pin Outs Cables and Connectors A 3 Fiber Optic Cable Requirements Basic fiber optic cable specifications are provided here For more information see the HP EtherTwist Technical Reference Guide HP p n 5091 3237E Fiber Specifications The HP Fiber Optic Hub Plus supports two different fiber core and cladding sizes 62 5 125 um and 50 125 um The hub uses ST connectors Fiber Core Cladding Size 62 5 125mm 50 125mm
32. diente ver la secci n del documento titulada Regulatory Statements lp HEWLETT PACKARD Printed in U S A 28682 90001 E0392
33. down ande For an 8 position switch set switches 3 and 8 down all others up For a 4 position switch set all switches down HP 37212B Support Link At the hub end Set switches 8 9 11 and 12 up set to 1 all others down set to 0 AUTO ANS on the front should be pushed in At the user end Set switches 8 9 11 and 12 up set to 1 all others down set to 0 Modem Configuration C 1 Black Box V 32 9600 Async At the hub end Load the factory option set 1 Then make these changes Data Rate Menu change to 9600 uncoded Modem Parameters Menu change to Forced Answer DTE Parameters Menu set DTR State to Responds to DTR Change set DSR State to DSR is Normal set CTS State to CTS is Normal set DCD State to DCD is Normal At the user end Configure as at the hub end except Modem Parameters Menu change to Normal Originate Hayes 1200 Smartmodem for both 8 and 10 switch units At the hub end Set all switches up At the user end Set switches 3 and 8 down all others up Racal Vadic Maxell 2400 VP Hayes 2400 Compatible At the hub end Configure with a terminal or PC using the following sequence at amp f amp c1 amp d2 amp s1q1 f0 amp wz Depress the ANS button The red light should go ON Configure with a terminal or PC using the following sequence Attheuserend at amp amp c1 amp d2 amp s1 f08wz
34. e IPX protocol m The device identification is merely the hub s station address also known as the MAC address Ethernet address or physical address This address is a unique 12 digit hexadecimal number assigned to the hub at the factory Network Addressing D 1 IPX Addressing Notes m Because the IPX address is assigned automatically no IPX configuration is necessary no IPX configuration is provided on the hub console interface By default the hub is ready to be managed by an SNMP network management station that is configured for IPX communications m If your hub is part of a network that is running IPX only you do not need to perform the IP configuration IP Addresses for IP and Non IP Networks If you have chosen to manage your hub with an SNMP IP network manager your hub must be configured with an IP address If your network will be connected with other networks that use IP addresses you must use assigned IP addresses Otherwise you can build your own IP addressing scheme described on the next page Using Assigned IP Addresses Hewlett Packard strongly recommends that if you intend to expand integrate or connect your network to other networks you use an assigned IP address There is a formal process to assign unique IP addresses to networks worldwide DDN Network Information Center in Menlo Park California is in charge of assigning IP addresses Contact the DDN Network Information Center by phone or mail They wi
35. e amount of traffic In heavy traffic it may appear on all the time Fault yellow is ON if the hub is faulty and needs to be replaced FLASHING if a port has been auto segmented See Auto Segmentation later in this chapter 1 4 Introducing the HP Fiber Optic Hub Plus Back of the Hub HEWLETT ThinLAN Port te Fiber Optie Porte DEB Hakan 28682A Fiber Optic Hub PLUS i O O O O O O O pe m a 2 AUI Port 1 2 3 4 5 6 7 8 S 12354 Tk Tx O000000 ff m Fe 9999900 Fm Wee 060000000 stats LEDs Inn pont N Fiber optic ports Console port AUI port Status LEDs Power green is ON if the hub is receiving power This is the same as Line On on the front Fiber Optic Ports Power SO CFault Act activity green is ON when data is being transmitted The frequency shows the amount of traffic In heavy traffic it may appear on all the time This LED is repeated on the front O OThinLAN Voy Fault yellow is ON if the hub is faulty and needs to be replaced FLASHING if a port has been auto segmented This LED is repeated on the front Col collision yellow is ON when collisions two or more nodes trying to transmit on the network at the same time are detected on any of the attached cable segments If collisions are infrequent which is normal the light may be imperceptible If it appears on continuously see chapter 4 Troubleshooting Port LEDs green
36. e console port s loopback connector to the hub HP part no 5062 3355 see appendix A Cables and Connectors 2 Cycle power on the hub by unplugging the power cord and plugging it in again As part of its power on self test the hub tests the console port 3 If the test passes the fault LED goes OFF the console port should be functional a Remove the loopback connector and cycle power again b Connect the console cable to the hub Press RETURN several times for the prompt 4 If the fault LED remains ON the hub is faulty and must be replaced Installation 2 13 Configuration Commands Several of the console commands allow you to customize the operation of your hub They are listed and described here Command Name Command Function Factory Preset Value Backup Configures one of the hub s ports for No backup link dedicated use in a backup redundant link configured to another hub IPconfig Configures the hub to enable IP communications communication with a network disabled management station using the Internet Protocol IP Fon Enables or disables specific hub ports APO ka Enables or disables Thinwatch If TA Thinwatch is enabled the Fault LEDs and ThinLAN port LED will flash if the ThinLAN port becomes segmented Note Other console commands allow you to monitor the hub s activity and to diagnose hub and network problems See chapter 3 Operation for console command details
37. e following tests of the hub s internal circuitry The first is the most complete internal test None of these tests the hub s ports see the next section for port tests m Cycle power on the hub by unplugging the power cord and then plugging it in This causes the hub to test itself All LEDs should go ON momentarily before returning to their operational states If all the LEDs do not go ON an LED may be burned out or the hub is faulty If the Fault LED on the front or back of the hub stays ON the hub is faulty In either case replace the hub m Connect a console to the hub Use the console s Reset command which causes the hub to test itself All LEDs should go ON momentarily before returning to their operational states If all the LEDs do not go ON an LED may be burned out or the hub is faulty If the Fault LED on the front or back of the hub stays ON the hub is faulty In either case replace the hub See chapter 3 Operation for console command details m Use an HP network management product to run a self test For instructions see the network management product s documentation Testing the Hub s Ports The tests described on the next page require a loopback connector for each port being tested Ports without loopback connectors will fail the test For loopback connector illustrations and part numbers see Loopback Connectors in appendix A 4 4 Troubleshooting To verify one or more of the fiber optic ports
38. ems 3 4 Operation IPconfig To set IP configuration parameters on the hub Use this command if you wish the hub to be accessible using IP the Internet Protocol If either of the following is true you must set the IP configuration parameters on the hub m The hub will be managed remotely with a network management product such as HP OpenView Hub Manager or HP OpenView Interconnect Manager over an IP network a network operating system that uses IP communications m The network cable segments attached to the hub will be tested using the IP Ping test Note Novell NetWare uses the IPX protocol If you are using the hub on a Novell NetWare network no configuration of the hub is required for it to communicate with a network management station that is also using the IPX protocol IPX is automatically enabled on the hub The hub determines its IPX address automatically from information received from a router or file server that is running IPX on the network and from its own station address also sometimes called the MAC address physical address or Ethernet address See appendix D Network Addressing for more information At the console interface prompt enter IP and you will be prompted to enter values for the parameters listed on the next page Operation 3 5 IP Address Subnet Mask Primary Default Router Backup Default Router Time To Live The IP address of the hub written in the format X X X X Each nu
39. er the first two characters to execute a command HElp display this list of hub commands HElp lt command gt display detailed help for a command BAckup configure a backup link to another hub COunters display packets collisions and errors DIscomect terminate this console session IPconfig configure Internet Protocol parameters LOopback run a loopback self test Loopback connectors must be installed PAssword change the network management access passuord PIng perform network layer ICMP Echo Request test POrt lt port gt lt ONIOFF gt enable or disable specified port REset reset hub and run pouer on self test SPeed neu speed change the console baud rate to 308 1288 2486 or 9686 STatus display port status TEstlink perform data link layer communication test THinuatch lt ONI OFF gt enable or disable Thinuatch gt The commands and their uses are described in the rest of the chapter HElp To see a list and brief description of all available commands HEIp lt command gt To see the syntax and description of a specific console command For the lt command gt parameter use the first two letters of the command you wish to see Example HE ST This displays help for the Status command 3 2 Operation BAckup To configure one of the hub s ports for dedicated use in a backup redundant link to another hub The HP Fiber optic Hub Plus allows you to use two of its netw
40. inated or it experiences excessive collisions Segmentation of the AUI port is always displayed on the corresponding port LED and the Fault LEDs See Auto Segmentation in chapter 1 The default setting is disabled to allow you to bench test the hub and not get a fault indication Enabled Thinwatch if the ThinLAN port is being used disable Thinwatch if it is not being used Example TH ON This enables Thinwatch 3 10 Operation Troubleshooting Some of the hub console commands are used for the troubleshooting instructions in this chapter See Console Connection in chapter 2 for details on connecting to the console port See chapter 3 Operation for details on the console commands This chapter describes these topics m basic troubleshooting tips m diagnosing with the LEDs m diagnostic tests testing the hub only testing the hub s ports testing the links testing fiber optic cabling Basic Troubleshooting Tips m Make sure that you have a valid network topology If you have trouble after a recent change to the network switch back to the previous topology If you no longer have trouble the new topology is probably at fault Topology faults may be due to excessive cable lengths or excessive repeater delays between nodes For configuration guidelines see the HP EtherTwist Technical Reference Guide p n 5091 3237E m Make sure that the hub is plugged in and that cable connections are
41. ing received indicating a cabling problem Check the fiber optic cabling and connections at both ends Also see chapter 4 Troubleshooting Station Address The station address of the device connected to each port or NONE meaning an address has not yet been detected A device must transmit packets to be detected MULTIPLE meaning more than one address has been detected TEstlink To run a test of the link between the hub and another IEEE 802 3 device Operation 3 9 Note 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 You will be prompted for the 12 digit hexadecimal station address also called MAC address Ethernet address or physical address of the destination device You will then be prompted for the number of test packets to send If any errors are reported during this test there may be a fault on the link being tested or on the destination device For more information about testing network links see chapter 4 Troubleshooting THinwatch lt ON OFF gt To enable set to ON or disable set to OFF Thinwatch on the ThinLAN port With Thinwatch enabled the Fault and ThinLAN port LEDs will flash whenever the ThinLAN port is auto segmented If you don t enable Thinwatch the LEDs won t flash Auto segmentation occurs on the ThinLAN port when it is enabled but has no connector on it the connected segment is not properly term
42. ins wired See the IEEE 802 3 standards document for definitions of the pins not shown here Cables and Connectors A 5 Console Connector and Cable Pin Outs The HP Fiber Optic Hub Plus has a console port that automatically detects whether a terminal or a modem is connected No switch setting is required Because of this function a standard straight through cable can not be used when connecting a terminal directly For a terminal connection you use a crossover cable essentially a cable for connecting a printer to a serial port or a modem cable with a null modem adapter attached which provides the crossover function For a modem connection you can use a standard modem cable This section provides pin assignment information for the cables you can use on the hub s console port Pin Out for Hub s Console Port Connector PIN US CCITT DIN 1 CHS GND 101 2 Tx 103 DI 3 Rx 104 D2 4 RTS 105 S2 5 CTS 106 M2 6 DSR 107 MI 7 GND 102 8 CD 109 MS 20 DTR 108 SI 22 RI 125 M3 23 SR 111 A 6 Cables and Connectors RS 232 C Crossover Cable for Terminal PC with 25 Pin Connector Minimum Pin Out Terminal PC end Hub end 25 pin male 25 pin male Tx 2 2 Tx Rx JAN Rx GND 7 7 GND 5 CTS 6 DSR 8 DCD 22 RI 23 DRS RS 232 C Crossover Cable for Terminal PC with 9 Pin Connector Minimum Pin Out Terminal PC end Hub end 9 pin female 25 pin male Tx 2 2 Tx Rx 323 Rx
43. links should be increased by one second for each additional backup link beyond two links Add one to this count if the remote hub is also functioning as a primary hub in a different link Additional Notes m Any port on the hub can be used for either the primary link or the backup link m Any combination of cable types can be used For example a thin coax link can act as a backup link to a fiber optic link See Sample Topologies later in this appendix Note that there are some differences between cable types for example segment length limitations that will prevent one type from being used to backup another type in some network topologies m The primary link and the backup link cabling should be run over different paths through different conduits for example to reduce the possibility that damage will occur to both cables simultaneously E 2 Backup Links Configuring A Backup Link Configure the Monitoring Hub Only All configuration of the backup link is performed from the console on the hub that is responsible for monitoring the backup link On the remote hub you only need to make sure the ports used in the primary and backup links are both enabled Use the Console s Backup Command To configure this link you use the Backup command on the hub console interface The command prompts you to identify the port used for the backup link the port used for the primary link the station address of the hub at the remote end of the li
44. ll provide instructions and the necessary documents to assign and register your IP addresses Telephone in U S only 1 800 235 3155 worldwide 415 859 3695 Mailing Address Hostmaster DDN Network Information Center SRI International 333 Ravenswood Avenue Menlo Park California 94025 D 2 Network Addressing Building Your Own IP Addressing Scheme If your network is isolated and will not be connected to any other networks that use IP addressing you can build your own IP addressing scheme If you use your own addressing scheme be aware that any connection to another IP network could cause communication problems on both networks The IP addresses on the two networks must be compatible Each address must be unique The following documents have detailed descriptions on how to build your own IP addressing scheme m HP OpenView EtherTwist Network Management DOS Reference Guide HP part number 5091 3635E m Internetworking With TCP IP Principles Protocols and Architecture Author Douglas E Comer Publisher Prentice Hall Inc Example Addressing Scheme On the next page is an example of a class C addressing scheme Class C addresses allow up to 254 devices to be configured If you have 254 or fewer devices to be managed on your network you can use the addressing scheme shown below If you have more than 254 devices to configure see the referenced documents and use a class B addressing scheme Class B allows 65534 devices to be configure
45. ls Documentation reference symbol If the product is marked with this symbol refer to the A 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 Do not proceed beyond a WARNING or CAUTION notice until you have understood the hazardous conditions and have taken appropriate steps Grounding This is a safety class I product and has a protective earthing terminal There must be an uninterruptible safety earth ground from the main power source to the product s input wiring terminals power cord or supplied power cord set Whenever it is likely that the protection has been impaired disconnect the power cord until the ground has been restored For LAN cable grounding m lf your LAN covers an area served by more than one power distribution system be sure their safety grounds are securely interconnected m LAN cables may occasionally be subject to hazardous transient voltages such as lightning or disturbances in the electrical utilities power grid Handle exposed metal components of the network with caution Servicing There are no user serviceable parts inside this product Any servicing adjustment maintenance or repair must be performed only by service trained personnel This product does not have a power switch it is powered on when the power cord is plugged in Safety I
46. mber between the decimal points is a decimal number between 0 and 255 Every IP address on a network must be unique The default is 0 0 0 0 which disables IP communications on the hub The bit mask defining which portion of the IP address is the subnet address written in the format X X X X A default value is automatically generated and depends on the class of IP address that has been entered See your network administrator for the subnet mask used by all devices on your IP network The IP address of the nearest IP router in your network The default value is 0 0 0 0 If no IP routers are in your network enter the address of a network management station if any The IP address of the router used in place of the primary default router when it is inaccessible The default value is 0 0 0 0 If there is no backup router or no primary default router use 0 0 0 0 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 will be sending IP packets to a destination that is more than 32 routers away The maximum is 255 See your network administrator for these IP settings See appendix D for information on setting the IP address At the end of the process of changing the IP configuration the hub will be reset This terminates the console session and disconnects the phone line if using a modem and resets the console port baud rate to be automatically sensed
47. mmand See the IP command description in chapter 3 Operation and appendix D Network Addressing for more information on configuring a network layer address on the hub When configured with an IP address the hub can also send and respond to network layer test packets ICMP Echo Request or Ping packets Using Non HP Network Management To manage the HP Fiber Optic Hub Plus with a non HP network management product you must first obtain HP s Network Management Information Base MIB extensions The HP MIB extensions are available on request Contact your HP authorized LAN dealer or local HP sales office 1 8 Introducing the HP Fiber Optic Hub Plus Installation This chapter describes how to install and configure the HP Fiber Optic Hub Plus and verify that it is operating correctly Installation Summary The steps to install the HP Fiber Optic Hub Plus are Mount the hub in a rack on a wall or on a table Plug in the hub and verify its operation Connect the hub to the networks and network devices Customize the hub s configuration if necessary for example because you want to turn off the unused ports or because the hub will be managed remotely from a network management station on an IP network un The details for these steps are provided in the rest of this chapter Tools and equipment needed for mounting the hub in a rack or on the wall m Phillips cross head number 1 screwdriver for
48. n Console Connection Connect a terminal to the hub s console port directly or through modems as described below Comnecting a Terminal Directly 1 Connect a terminal or a PC emulating a terminal to the console port using an RS 232 C cable For pin outs and recommended cables see appendix A Cables and Connectors 2 Switch on the terminal s power or switch on the PC s power and start the terminal emulation program Configure the terminal for 8 bits per character 1 stop bit no parity Xon Xoff handshaking and a baud rate of 9600 2400 1200 or 300 3 Press RETURN several times for the prompt gt The baud rate for communication between the hub and the terminal is set automatically when you press RETURN Installation 2 11 Comnecting a Modem and Terminal 1 Use a full duplex asynchronous character mode modem only The following modems have been tested at their rated speeds HP 37212B Support Link HP 35031A Support Link II HP 50759A Support Link Hayes 1200 Smartmodem Racal Vadic Maxell 2400VP Hayes 2400 compatible Black Box V 32 9600 Baud 2 Configure the modem as described in appendix C Modem Configuration 3 Connect the modem to the console port using an RS 232 C modem cable For pin outs and recommended cables see appendix A Cables and Connectors 4 At the remote site connect the terminal or PC emulating a terminal to the remote modem Make sure
49. name and address and the applicable specifications that are recognized in the European community DECLARATION OF CONFORMITY according to ISO IEC Guide 22 and EN 45014 Manufacturer s Name Hewlett Packard Company Manufacturer s Address 8000 Foothills Blvd Roseville CA 95678 U S A declares that the product Product Name Fiber Optic Hub Plus Model Number HP 28682A conforms to the following Product Specifications Safety EN 60950 IEC 950 EMC EN 55022 class A CISPR 22 class A EN 55101 2 IEC 801 2 3 kV CD 8 kV AD EN 55101 3 IEC 801 3 3 V m FTZ 1046 84 VDE B Supplementary Information None Roseville October 24 1991 Mandis e P Paw Sandra L Sheeban Quality Manager 2 Regulatory Statements One Year Limited Hardware Warranty Hewlett Packard warrants this computer hardware product against defects in materials and workmanship for a period of one year from receipt by the end user If HP receives notice of such defects during the warranty period HP will at its option either repair or replace products that prove to be defective Should HP be unable to repair or replace the product within a reasonable amount of time Customer s alternative exclusive remedy shall be a refund of the purchase price upon return of the product Exclusions The above warranty shall not apply to defects resulting from improper or inadequate maintenance by customer customer supplied software or interfacing unauthorize
50. nd the backup port is activated Once you enable the primary port it assumes the active role Backup Links E 3 Note On the remote hub make sure that the ports connected to both the primary and backup links are enabled PO n ON On the monitoring hub the status of the primary and backup ports is controlled by the hub s firmware you do not need to explicitly enable the monitoring hub s ports Identifying the Backup Link The ports designated as the primary and backup ports are identified on the hub console s Status command screen by the words PRI and BKUP respectively next to the port numbers HP network management products can also be used to identify the backup link See the HP network management product s documentation for more information Indications of Backup Link Activation When the primary link fails n consecutive test packet responses were not received on the primary port from the other hub the backup link is automatically enabled The effect of this change is displayed on the monitoring hub s LEDs and console interface Activation of the backup link does not cause any changes to the status of any of the ports on the remote hub On the hub s LEDs the primary port LED goes off and the backup port LED goes on On the hub console s Status command screen the status of the primary port changes from ON to OFF and the backup port changes from OFF to ON On HP network management products Depending
51. nfigured IP address or IPX See Network Management later in this chapter m Can be downloaded with new firmware enhancements either from a PC attached to the console port or over the network See Firmware Enhancements later in this chapter m Comes with metal brackets that can be easily attached to the hub for mounting it in a standard 19 inch telco rack or on a wall 1 2 Introducing the HP Fiber Optic Hub Plus Included Parts m HP 28682A Fiber Optic Hub Plus 28682 60001 m Accessories kit 5062 9312 including two mounting brackets 5001 5624 four 10 mm M4 screws 0515 0780 four in 12 24 screws 2940 0238 AUI retainer 5062 3351 four self adhesive rubber feet 0403 0427 Velcro BNC T connector cover 1252 1650 m HP Fiber Optic Hub Plus Installation Steps 28682 90002 m HP Fiber Optic Hub Plus Installation and Reference Guide 28682 90001 m Power cord one of the following United Kingdom 8120 1351 Australian 8120 1369 European 8120 1689 United States Canada 125 V 8120 1378 United States Canada 250 V 8120 0698 Swiss 8120 2104 Danish 8120 2956 Japanese 8120 4753 South Africa 8120 4211 Introducing the HP Fiber Optic Hub Plus 1 3 Front of the Hub Status LEDs Line On green is ON if the hub is receiving power Activity green is ON when data is being transmitted The frequency shows th
52. nformation 1 Informations concernant la s curit Symboles de s curit Symbole de r f rence la documentation Si le produit est marqu de ce symbole A reportez vous ala documentation du produit afin d obtenir des informations plus d taill es AVERTISSEMENT Dans la documentation un AVERTISSEMENT indique un danger susceptible d entrainer des dommages corporels ou la mort ATTENTION Un texte de mise en garde intitul ATTENTION indique un danger susceptible de causer des dommages l quipement Ne continuez pas au del d une rubrique AVERTISSEMENT ou ATTENTION avant d avoir bien compris les conditions pr sentant un danger et pris les mesures appropri es Cet appareil est un produit de classe I et poss de une borne de mise la terre La source d alimentation principale doit tre munie d une prise de terre de s curit install e aux bornes du c blage d entr e sur le cordon d alimentation ou le cordon de raccordement fourni avec le produit Lorsque cette protection semble avoir t endommag e d brancher le cordon d alimentation jusqu ce que la mise la terre ait t r par e Mise la terre du c ble de r seau local m Si votre r seau local s tend sur une zone desservie par plus d un syst me de distribution de puissance assurez vous que les prises de terre de s curit soient convenablement interconnect es m Les c bles de r seaux locaux peuvent occasionnellement
53. nk how frequently in seconds test packets used to check the status of the primary link should be sent to the remote hub and how many consecutive response failures will trigger activation of the backup link The Backup command is described in more detail in chapter 3 Operation under the section Console Commands Follow this Configuration Installation Sequence If a hub is installed in a network that includes two connections to another hub until one of the connections can be configured as a backup link a loop in the network exists causing some network performance degradation For this reason it is better to configure the backup link on the hub before the hub is installed in the network It is best to follow these steps 1 Attach a console to the hub s console port and start a console session For instructions see step 4 Customize the hub s configuration in chapter 2 2 Use the Backup command BA to complete the backup link configuration See the Backup command description in chapter 3 or enter HE BA at the console prompt for online help on the Backup command 3 Complete the network cable connections between the monitoring hub and the remote hub For instructions see Port Connections in chapter 2 4 Enable the primary port with the Port command enter PO n ON where n is the primary port s ID This step is necessary because without the cables connected the test packets cannot be successfully sent a
54. ntro i difetti di materiali e di fabbricazione per un periodo di 12 mesi dal giorno in cui li riceve l utente finale Durante il periodo di garanzia la Hewlett Packard o un Rivenditore autorizzato riparer o sostituir 1 prodotti che risultassero difettosi 2 Warranty Regulatory Information The product described in this document complies with specific international regulations See the document section entitled Regulatory Statements for the applicable regulatory information Informations concernant la r glementation Le produit d crit dans le pr sent document satisfait des normes internationales sp cifiques Pour plus de d tails sur les r glementations applicables reportez vous la section Regulatory Statements Informationen ber Kontrollvorschriften Das in diesem Dokument beschriebene Produkt erf llt bestimmte internationale Kontrollvorschriften F r Informationen ber die zutreffenden Kontrollvorschriften lesen Sie bitte das Kapitel mit der berschrift Regulatory Statements Informazioni sulla regolamentazione Il prodotto descritto in questo documento amp conforme alle specifiche normative internazionali Vedere la sezione del documento intitolata Regulatory Statements per le informazioni sulle normative competenti Informacin reglamentaria El producto que se describe en este documento cumple con determinados reglamentos internacionales En cuanto a la informaci n reglamentaria correspon
55. ole Connection in chapter 2 Run the Loopback command See details in chapter 3 Operation If the AUI port is reported to Pass the transceiver is OK and this procedure is finished If the AUI port is reported to Fail then go on to the next step In either case set the transceiver s loopback switch back to the position for normal operation Disconnect the transceiver from the hub Attach an AUI loopback connector directly to the hub s AUI port Run the Loopback command again If the AUI port is reported to Pass the transceiver is probably faulty Ifthe AUI port is reported to Fail the hub is faulty and must be replaced Troubleshooting 4 5 Testing the Link Use one of the following tests between the hub and an addressable device on the network m Use the console s Testlink command to run a link test This works with devices able to send an IEEE 802 2 Test Response packet upon receipt of a Test command packet You specify the remote device by its 12 digit hexadecimal station address See Testlink in chapter 3 for details m Use the console s Ping command to run a network layer test This works with devices having an IP address and able to respond to an ICMP Echo Request packet You specify the remote device by its IP address See Ping in chapter 3 for details m Use an HP network management product to test the link For instructions see the network management product s documentation
56. ollow to install the hub Chapter 3 describes all the hub s console interface commands Chapter 4 contains troubleshooting information If you experience problems with the hub you should refer to this chapter Appendix A provides information on the cables and connectors that you should use to connect the hub to the other devices in your network Appendix B contains the technical specifications for the hub Appendix C describes how to configure commonly found modems for use with the hub s console connection Appendix D provides information on network addressing for those using SNMP network management stations to manage the hub over an IP or IPX network Appendix E provides information on establishing a backup connection for a critical link to another hub in your network topology Safety Information contains safety information about the hub You should read and understand this information before you use the product Contents 1 Introducing the HP Fiber Optic Hub Plus A E E ae bog 1 1 Included Parts 1 3 Frontiof the Hub piso ria bi 38 a vx e ed 1 4 B ck fthe Hub i toas dos 0 5 ife ES usen Sede Ore Sa ER 1 5 How the Hub Works sii es we ne ne sh ann samen 1 6 Collision Detection uu as uw a dawn Er vom ROGA ee ame 1 6 Auto Segmentation 1 6 Farniware Enharicemerits 2 u 2222 quy qe Eee va 1 7 Network Management
57. on the HP network management product you have you may be able to automatically monitor the status of the backup link from the network management station See your HP network management product documentation for more information E 4 Backup Links Reactivating the Primary Link When the primary link is repaired you can use any of the following methods to reenable the primary port m From the hub s console use the Port command PO n ON where n is the primary port s ID m Cycle power on the hub This is useful if you do not have access to the hub s console interface for example because the hub is in a wiring closet and a console is not connected m From an HP network management station reenable the port or reset the hub See the network management product documentation for details on how to enable a port or reset the hub When the primary port is reenabled the backup port is automatically disabled and returned to backup mode Backup Links E 5 Sample Topologies Following are two simple sample topologies that may give you some ideas on how a backup link could be used in your network Sample 1 Fiber Optic Hub to Fiber Optic Hub In this sample topology the primary and backup links consist of fiber optic cable segments between two HP Fiber Optic Hub Pluses Building 1 Building 2 to other to other network network HP devices HP devices EtherTwist 10 10 LAN Hub Bridge pe
58. one for each network port fiber optic ports 1 through 8 ThinLAN port and AUI port are ON when the corresponding port is enabled and functioning normally Ports can be enabled and disabled using the Port command on the hub s console The AUI port LED is always ON when that port is enabled even if it is not being used Each Port LED will FLASH if the port has been auto segmented see Auto Segmentation later in this chapter Introducing the HP Fiber Optic Hub Plus 1 5 How the Hub Works The HP Fiber Optic Hub Plus is a multiport repeater Data signals coming into the hub from any of its ports are automatically regenerated and transmitted to all the other hub 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 performs collision detection A collision occurs when two nodes try to transmit at the same time When the hub detects this it stops repeating the colliding transmissions and starts transmitting a jamming signal The jamming signal tells the transmitting nodes that a collision has occurred The colliding nodes then stop transmitting for a random amount of time before attempting to retransmit the data Once the collision condition is removed the hub stops transmitting the jamming signal and normal operation is restored Auto Segmentation The hub will automatically disable auto segment
59. oni sulla sicurezza Consideraciones sobre seguridad S mbolos de seguridad S mbolo de referencia a la documentaci n Si el producto va marcado con este A simbolo consultar la documentaci6n del producto a fin de obtener mayor informaci n sobre el producto ADVERTENCIA Una ADVERTENCIA en la documentaci n se ala un riesgo que podr a resultar en lesiones o la muerte PRECAUCION Una PRECAUCION en la documentaci n se ala un riesgo que podr a resultar en aver as al equipo No proseguir despu s de un s mbolo de ADVERTENCIA o PRECAUCION hasta no haber entendido las condiciones peligrosas y haber tomado las medidas apropiadas Este aparato se enmarca dentro de la clase I de seguridad y se encuentra protegido por una borna de puesta a tierra Es preciso que exista una puesta a tierra continua desde la toma de alimentaci n el ctrica hasta las bornas de los cables de entrada del aparato el cable de alimentaci n o el juego de cable de alimentaci n suministrado Si existe la probabilidad de que la protecci n a tierra haya sufrido desperfectos desenchufar el cable de alimentaci n hasta haberse subsanado el problema Puesta a tierra del cable de la red local LAN m Sila LAN abarca un rea cuyo suministro el ctrico proviene de m s de una red de distribuci n de electricidad cerciorarse de que las puestas a tierra est n conectadas entre s de modo seguro m Es posible que los cables de la LAN se vean sometidos de ve
60. ork ports for a link to another hub in your network The backup link normally carries no traffic but it is automatically activated if the primary link fails Note that any of the ports can be the backup port to any other port When you enter the Backup command you are prompted for these values Backup Port The port used for the backup link Enter the port ID see the Port command description for the port IDs Or enter 0 if you wish to remove an existing backup link configuration Primary Port The port used for the primary link Enter the port ID Remote Station The 12 digit hexadecimal station address of the hub at the remote Address end of the critical link Seconds Between How often you want the hub to send an IEEE 802 2 Test packet to Test Packets the remote hub over the primary link Consecutive Failures The number of consecutive Test packet response failures that will trigger activation of the backup link For example enter 5 to activate the backup link on the fifth failure The hub monitors the primary link by sending IEEE 802 2 Test packets at the specified frequency to the specified remote hub If n consecutive Response packets are not returned from the remote hub the primary port is disabled and the backup port is enabled When the primary link is repaired you must reenable the primary port It is not automatically reenabled When the primary port is enabled the backup port is disabled automatically and returned to ba
61. ort scri Re nee Bin A 10 Specifications Modem Configuration HP 35031A Support Link IT C 1 HP 50759A Support Link C 1 HP 37212B Support Link 3 ooo mo 25 RE ARS eur aus C 1 Black Box V 32 9600 Async C 2 Hayes 1200 Smartmodem for both 8 and 10 switch units C 2 Racal Vadic Maxell 2400 VP Hayes 2400 Compatible C 2 Network Addressing IPX Addressing for Novell NetWare D 1 IP Addresses for IP and Non IP Networks D 2 Using Assigned IP Addresses D 2 Building Your Own IP Addressing Scheme D 3 Backup Links DESCHPHOH cite 2 yee a a ae Noe E 1 Limitations A Bi hea we d HE na E 2 Additional Notes s eun ee ww a won ner W de GS 3 di don E 2 Configuring a Backup Link E 3 Identifying the Backup Link E 4 Indications of Backup Link Activation E 4 Reactivating the Primary Link E 5 Sample Topologies re S go c LE se MONA LEE Pe Y e OR Se SE W E 6 Safety Information Safety Information 1 Regulatory Statements Regulatory Statements 1 One Year Limited Hardware Warranty Warranty 1 Introducing the HP Fiber Optic Hub Plus The HP 28682A Fiber Optic Hub
62. r 2 Attach another thin LAN cable section or a 50 ohm terminator to the other side of the T connector 3 Attach the T connector to the ThinLAN port 50 ohm thin LAN j able puis n Al thin LAN nn terminator T cane cable mid cable end of cable attachment OR attachment LA ThinLAN port i ThinLAN port i on hub on hub Note Fold the BNC T connector cover around the connection and squeeze the surfaces together around the edges BNC T connector cover SSL XXX 5 a RSS lt SESS nr EEE EEE RL RER ARS x ELLE x RZ SELLE 5 SS thin LAN cable Each thin LAN cable segment must be terminated with a 50 ohm terminator at each end In the illustration above showing the ThinLAN port at the end of a cable segment the 50 ohm terminator is attached to one side of the BNC T connector Installation 2 9 AUI Port Caution Do not touch the hub connector pins or the cable connector pins Static discharge may damage the equipment 1 Disable the SQE Test signal quality error or heartbeat test signal and Loopback Test options if present on the transceiver See Note below AUI retainer 2 Slide the AUI retainer included onto the connector posts on a transceiver or an AUI cable 3 Plug the transceiver or AUI cable we into the AUI port on the hub and En secure it with the retainer s screws AUI cable A D Tighten the screws until they are snug do not overtighten
63. r optic transceiver attached t AUI port ki Fiber optic port Fiber Optic MN _ A Hub A Plus Duplex fiber 7 optic cable ThinLAN Port to ThinLAN Port Fiber ThinLAN cable Optic Hub Plus Fiber Optic Port to Fiber Optic Port Fiber optic Fiber f O pti C a n Plus Duplex fiber 7 optic cable 2 6 Installation BNC T attached to ThinLAN port Any hub bridge router or end node Any hub or other device with BNC connector Fiber Optic Hub Plus Port Connections Fiber Optic Port To connect the duplex fiber optic cable to the hub attach one of the two fibers between the hub s transmit port labeled Tx and the receive port of the other device such as a transceiver Attach the other fiber between the hub s matching receive port labeled Rx and the transmit port of the other device If one fiber on this end of the cable is marked such as with a white sleeve attach it to the hub s Tx port Attach the unmarked fiber to the hub s Rx port Use the same convention at the other end of the cable At the other end the marker is on the other fiber For detailed instructions on attaching ST connectors see the next page Rx to be attached p Rss RS RE Tx already attached x LEERE LL LIS III O S se RS Tx conneltor marker Duplex fiber optic cable Caution The bend
64. s Please contact your HP authorized LAN dealer or HP representative for the current list of tested products HP relies in part upon information from the suppliers of non HP products and makes no warranty expressed or implied with respect to the operation of these products or their compliance with worldwide regulatory requirements HP advises customers to conduct independent examination to determine suitable levels of compatibility for the customer s individual needs Gew hrleistung HP gew hrleistet da die Ger te frei von Material und Fabrikationsfehlern sind Die Gew hrleistungsfrist betr gt ein Jahr ab Lieferung Etwaige fehlerhafte Ger te werden nach eigenem Ermessen repariert oder ersetzt Garantia Esta pieza de hardware est garantizada por HP contra defectos de materiales o manufactura por un per odo de un a o a partir del momento en que el usuario la recibe Durante dicho per odo de garant a HP o un distribuidor autorizado reparar o reemplazar seg n su criterio aquellos productos que resulten defectuosos Garantie Hewlett Packard garantit le mat riel d informatique personnelle contre tout d faut de mati re et de fabrication pour une p riode d un an compter de la r ception du mat riel par l utilisateur Hewlett Packard ou le distributeur agr HP choisira de remplacer ou de r parer tout produit d fectueux Garanzia La Hewlett Packard garantisce i propri prodotti hardware per computer co
65. sible for monitoring the link It sends IEEE 802 2 Test packets to the remote hub hub B in the illustration and looks for response packets from that hub If the response packets fail to come back the primary link is considered as having failed and the backup link which had not been carrying any traffic is enabled automatically If the primary link does fail it is automatically disabled until it can be repaired and reenabled When the primary link is repaired you must reenable the primary port It is not reenabled automatically When the primary port is enabled the backup port is automatically disabled and returned to backup mode See Reactivating the Primary Link later in this appendix Backup Links E 1 Limitations m 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 m A given hub should be connected to the remote end of no more than two backup links If it is functioning as the remote hub in more than two backup links it may not be able to respond to the test packets fast enough when there is a high level of data traffic on the network segments This limit may be exceeded by increasing the time between test packet transmissions on the monitoring hubs For all the backup links in which the remote hub is involved the time configured on the monitoring hubs for those
66. source 2 4 Installation 2 Plug in the hub and verify its operation 1 Plug the power cord into the hub s power socket and into an ac power source Note that the hub does not have a power switch the hub is powered on when the power cord is plugged in The HP Fiber Optic Hub Plus has a power supply that automatically adjusts to any ac power source that provides between 90 and 240 volts No voltage range setting is necessary 2 Check the LEDs on the hub s back panel When you plug in the hub it executes a self test and illuminates all the LEDs for approximately ten seconds At the end of the self test you should see the following LED pattern The Power LED is ON The Fault LED is OFF Disregard the other LEDs until you have attached the LAN segments to the network ports If the LED pattern is different refer to Diagnosing With the LEDs in chapter 4 Troubleshooting Installation 2 5 3 Connect the hub to devices and networks You can connect the hub to another HP hub or bridge in three ways shown below You can directly connect a computer in the first way shown Note that fiber optic cabling may pass through intermediate connector panels See the HP EtherTwist Technical Reference Guide p n 5091 3237E for information on the number of other hubs that can be connected called cascading hubs cable segment length limits and other topology limitations Fiber Optic Port to AUI Port Fibe
67. sted but it continues to repeat data If the hub is faulty the Fault LED will stay on This command also terminates the console session and disconnects the phone line if using a modem and resets the console port baud rate to be automatically sensed To restart the console session reestablish the phone link if used then press RETURN several times for the prompt 3 8 Operation SPeed lt new speed gt To change the console port baud rate Normally the baud rate is automatically sensed Use this command to set the baud rate explicitly to 300 1200 2400 or 9600 You will be prompted to set the terminal s baud rate to the same speed and to press RETURN several times for the prompt STatus To display status information for the hub including the time elapsed since the last reset see the Reset command the hub s station address the Thinwatch setting and a table with the following port information ron The port ID BKUP indicates the port is configured as the backup link PRI indicates the port is the primary link Port Status The status of each port ON means the port is enabled and is not auto segmented OFF means the port has been explicitly disabled SEGMENTED means the port has been auto segmented See Auto Segmentation in chapter 1 Light Status The light status of each fiber optic port OK means light is being received so the fiber optic cabling is working properly LOW means little or no light is be
68. t your HP authorized LAN dealer or local HP sales office for the latest on firmware enhancements to this hub Network Management The HP Fiber Optic Hub Plus has software that allows it to be managed remotely by any network management product that complies with the Simple Network Management Protocol SNMP standard HP offers SNMP compliant network management products both DOS based and UNIX based versions are available These products use a windows interface to manage multiple HP hubs and other HP network devices automatically generate a graphic display of the network map gather network traffic statistics configure ports run tests of the hub test network links to other devices Note The functionality provided by HP network management products is improved on a regular basis For more information on the capabilities of these products contact your HP authorized LAN dealer or local HP sales office Introducing the HP Fiber Optic Hub Plus 1 7 Network Address The communication between the hub and the network management station requires that the hub be assigned a network address If you are using your hub in a Novell NetWare network it can be automatically configured with an IPX address from an IPX router on the network The hub is preconfigured to enable this function Alternatively if you are using the hub in a network that uses the Internet Protocol 1P you manually configure the hub with an IP address using the hub console s IP co
69. the terminal and modems are functioning properly then establish the link between the terminal s modem and the hub s modem according to the modem instructions 5 Press RETURN several times for the prompt gt The baud rate for communication between the hub and the terminal is set automatically when you press RETURN 2 12 Installation If You Have Trouble with a Terminal or Modem Connection If you have connected a terminal or modem according to the previous instructions and you do not get a prompt after you have pressed RETURN several times then try the following procedures in sequence until you get the prompt 1 Connection Reset Procedure 1 Detach then reattach the console or modem cable from the hub 2 Press RETURN several times for the prompt 2 Cycle Power Procedure 1 Cycle power on the hub by unplugging the power cord and plugging it in again 2 When the power on self test is done press RETURN several times for the prompt 3 Adjust Baud Rate Procedure 1 Temporarily set the baud rate in the terminal s own configuration to 2400 2 Press RETURN several times for the prompt 3 Set the hub s baud rate to the desired rate for example 9600 by using the console s Speed command see Console Commands in chapter 3 4 Set the terminal s configuration to this new baud rate and press RETURN again for the prompt 4 Test Console Port Procedure 1 Detach the console cable from the hub Attach th
70. them 4 Attach the network cable to the transceiver Note Disable SQE Test on Transceiver Any transceiver used with this hub must allow disabling the SQE test An HP 28641A ThinMAU does not meet this requirement and cannot be used Instead use an HP 28641B ThinLAN Transceiver Similarly an HP 30241A ThickMAU with date code D 3017 or earlier cannot be used The date code is found on a small white sticker on the body of the device Lower numbers indicate an earlier manufacturing date Instead use an HP 30241A with date code F 3105 or later and follow the instructions that are included with the Thick MAU for disabling SQE test 2 10 Installation 4 Customize the hub s configuration if needed No changes to the hub s default configuration are required for the hub to operate correctly The HP Fiber Optic Hub Plus has a console interface for customizing the configuration monitoring hub activity and running diagnostics To configure the hub first connect a terminal or PC emulating a terminal as described under Console Connection below Then use the console interface to change the desired hub configuration parameters The commands that you can use to change the hub s configuration are listed and described later in this section under Configuration Commands The hub can also be configured over the network from an HP network management station See the network management product documentation for more informatio
71. z en cuando a voltajes moment neos que entra en peligro rayos o alteraciones en la red de energ a el ctrica Manejar con precauci n los componentes de metal de la LAN que est n al descubierto Este aparato no contiene pieza alguna susceptible de reparaci n por parte del usuario Todas las reparaciones ajustes o servicio de mantenimiento debe realizarlos solamente el t cnico Este producto no tiene interruptor de potencia se activa cuando se enchufa el cable de alimentaci n Consideraciones sobre seguridad 5 Safety Information FENDER REE A Vas TIBET Am CORENTA iava 7 VZERL HERAF E THE Sv Er ZTZ17 Wan FE LASFKRORAL AfERTIRL Fo TEX Zapo TER URERAORRLERASREMLET BE EX OGGI SAN CHP BRA tv RICAS sin HAt i lt RAL IELVEIlRILGEO 7z ECCO SUR XE ACC 0728 vs LlRBREESIE2 AIOSSCOGEREHUNT ERZ TU ET ERRO Han BRETT BRI ath F tvh ton UN BOX EE EMPATE OL OBECT 6LCORAMNKNiktbniZtcriENHISNOIEI ld ibra n43 CERI FEAL THEO TORS LAN F TILDH MIEML T e ELEHNDLANTHRAOHEVZATALKIEHFRIT TIMER NL TOZA TEN OVATAONRIRIENMEKIHEIZERIKTHA I be RRL TINI e LAN 7 7vi3e amp LTr BEEBE ALIFE RERENENATOR BIH aNAZACLEMAAV ET EHLTZBESFTOHRLIUFZER EIN bal ANS FRROK EC ADO ECA TEA AB ATL VEZH CAME ZURAK EDI KERER FDO A EWI KERELE ERA DET 6 Safety Information Regulatory Statements FCC Statement For U S A Only Federal Communications Commission Radio Frequency Interference Statement
72. zkabeln oder dem mit Strom belieferten Netzkabelsatz voraus Sobald Grund zur Annahme besteht da der Schutz beeintr chtigt worden ist das Netzkabel aus der Wandsteckdose herausziehen bis die Erdung wiederhergestellt ist F r LAN Kabelerdung m Wenn Ihr LAN ein Gebiet umfa t das von mehr als einem Stromverteilungssystem beliefert wird m ssen Sie sich vergewissern da die Sicherheitserdungen fest untereinander verbunden sind m LAN Kabel k nnen gelegentlich gef hrlichen bergangsspannungen ausgesetzt werden beispielsweise durch Blitz oder St rungen in dem Starkstromnetz des Elektrizit tswerks Bei der Handhabung exponierter Metallbestandteile des Netzwerkes Vorsicht walten lassen Dieses Ger t enth lt innen keine durch den Benutzer zu wartenden Teile Wartungs Anpassungs Instandhaltungs oder Reparaturarbeiten d rfen nur von geschultem Bedienungspersonal durchgef hrt werden Dieses Ger t hat keinen Netzschalter es wird beim Anschlie en des Netzkabels eingeschaltet Hinweise zur Sicherheit 3 Considerazioni sulla sicurezza Simboli di sicurezza Simbolo di riferimento alla documentazione Se il prodotto contrassegnato da questo A simbolo fare riferimento alla documentazione sul prodotto per ulteriori informazioni su di esso PERICOLO La dicitura PERICOLO denota un pericolo che pu causare lesioni o morte ATTENZIONE La dicitura ATTENZIONE denota un pericolo che pu danneggiare le attrezzature Non pro

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