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HP 10:10 LAN Bridge MB, Installation And Reference Manual

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Diagnosing With the LEDs

Table 5-1 shows the LED patterns you will see if the bridge or network has a fault during
self-test.  Table 5-2 shows the LED patterns for a bridge or network fault during operation.

Table 5-1.  LED Patterns Showing Self-test Failures

LEDs

Suggested Actions

Line On

(on front)

Fault

(front and

back)

Pwr

(on back)

Self-test Net Fail

OFF

*

*

*

*

Check power cord and power source.
If OK, 5 V power has failed.
Replace the bridge.

*

*

OFF

*

*

Check power cord and power source.
If OK, 12 V power has
failed.  Replace the bridge.

*

ON

*

ON

OFF

Bridge hardware failure detected
during self-test.  Replace the bridge.

*

ON

*

ON

ON

Port fault detected on the indicated
port during self-test.  Check cables,
connections, transceivers (if used),
etc.

For the bridge to pass self-test, a
viable network or an HP loopback
connector must be attached to one of
the port 1 connectors and to the port
2 connector.

*  This LED is not important for the diagnosis.

5-2 Troubleshooting

Summary of Contents for 10:10 LAN Bridge MB

Page 1: ... Work More Network HP Networking HP 10 10 LAN Bridge MB Installation and Reference Guide For world wide support on all HP Network Connectivity Products visit our web site at http www hp com go network_city ...

Page 2: ... entitled Safety Information Informations concernant la sécurité Ce produit et la documentation s y rapportant devront être étudiés avant l installation et l utilisation afin de se familiariser avec les symboles et instructions de sécurité Reportez vous à la section Informations concernant la sécurité Hinweise zur Sicherheit Sehen Sie sich das Produkt an und lesen Sie die begleitende Dokumentation...

Page 3: ...HP 28673A HP 10 10 LAN Bridge MB Installation and Reference Guide HP Part Number 28673 90001 March 1992 Edition 2 E0392 ...

Page 4: ...roblems with the bridge you should refer to this chapter Appendix A provides information on the cables and connectors that you should use to connect the bridge to the other devices in your network Appendix B contains the technical specifications for the bridge Appendix C describes how to configure commonly found modems for use with the bridge s console connection Appendix D provides information on...

Page 5: ...e 2 2 2 Connect the networks to the bridge 2 5 Using the AUI Connectors 2 6 Using the ThinLAN Connector 2 7 3 Plug in the bridge and verify 2 8 4 Customize the bridge s configuration if needed 2 9 3 Configuration Starting a Console Session 3 2 Connecting a Terminal Directly 3 2 Connecting a Modem and Terminal 3 3 If You Have Trouble with a Terminal or Modem Connection 3 4 Configuration Commands 3 ...

Page 6: ...ps 5 1 Diagnosing With the LEDs 5 2 Diagnostic Tests 5 4 Testing the Bridge Only 5 4 Testing the Bridge and LANs 5 5 Testing the Network Links 5 6 6 How the Bridge Works The Bridging Function 6 1 Operating State 6 2 Address Table 6 3 Wildcard Filters 6 5 Spanning Tree Support 6 6 Automatic Network Verification 6 8 Firmware Enhancements 6 9 Network Management 6 9 A Cables and Connectors HP Cables A...

Page 7: ...ons C Modem Configuration HP 35031A Support Link II C 1 HP 50759A Support Link C 1 HP 37212B Support Link 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 D Network Addressing IPX Addressing for Novell NetWare D 1 IP Addresses for TCP IP Networks D 2 Using Assigned IP Addresses D 2 Building Your Own IP A...

Page 8: ......

Page 9: ...ns Extends communications beyond the length limitations of a single LAN Provides data packet filtering that inhibits the flow of unnecessary 802 3 Ethernet data packets MAC frames from one network to another eliminating the waste of valuable bandwidth Provides parity checking and improved data integrity by verifying the cyclic redundancy checksum CRC for each frame received For more detailed infor...

Page 10: ...I and BNC connectors enabling attachment to thin coax thick coax fiber optic or twisted pair LAN media Automatically detects which port 1 connector AUI or BNC is being used Has an RS 232 C port for connecting a console to customize the bridge s configuration to monitor bridge activity and status and to run diagnostic tests Console access can be either local by attaching an ASCII terminal or PC dir...

Page 11: ...arts are included with the HP 10 10 LAN Bridge MB product HP 10 10 LAN Bridge MB HP 28673 60002 Accessories kit 28673 60006 including two mounting brackets 5001 5624 four 10 mm M4 screws 0515 0780 four 5 8 in 10 32 screws 2680 0302 two AUI retainers 5062 3351 four self adhesive rubber feet 0403 0427 BNC insulating cover 1252 1650 HP 10 10 LAN Bridge MB Installation Quick Reference 28673 90002 HP 1...

Page 12: ... receiving power Activity green flashes ON for each data packet that is received or transmitted The frequency of flashes indicates the amount of traffic In heavy traffic it may look like it is ON all the time Fault yellow is ON if the bridge or network has failed during self test or normal operation Status LEDs 1 4 Introducing the HP 10 10 LAN Bridge MB ...

Page 13: ...ridge reset is in progress If an error is found during self test this LED stays ON and the Fault and possibly Net Fail LED will go ON Fault yellow is ON if the bridge or network has failed during reset or normal operation This LED is repeated on the front If this LED is ON and one of the Net Fail LEDs is also ON the failure is associated with the network If this LED is ON and a Net Fail LED is not...

Page 14: ...ay look like it is ON all the time ThinLAN Enabled or AUI Enabled green is ON indicating which of the Port 1 connectors is active During its power on self test the bridge automatically detects which Port 1 connector is being used Only one of these connectors can be used at a time to connect the bridge to the LAN Reset and Clear Buttons Two buttons for resetting the bridge are located on the back n...

Page 15: ...ion 4 Customize the bridge s configuration if necessary for example because you want to enter static addresses into the bridge s address table or because the bridge will be managed remotely from a network management station on an IP network The details for these steps are provided in the rest of this chapter Tools and equipment needed for mounting the bridge in a rack or on the wall Phillips cross...

Page 16: ...ets or place it on a table Before mounting the bridge 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 bridge is mounted in a rack with other HP EtherTwist family devices and a cable guide unit Order the HP EtherTwist LAN Rack HP 46298D ...

Page 17: ...out 2 Position the bridge in the rack or cabinet and slide it up or down until the rack holes line up with the bracket holes Then attach the bridge to the rack with 5 8 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 bridge Mounting bracket...

Page 18: ... bridge to a wood surface minimum 1 2 in plywood or equivalent with 5 8 inch number 12 wood screws or equivalent not included For Table Mounting Attach the self adhesive rubber feet to the bottom of the bridge Set the bridge on a table near a power source Mounting bracket Flat on wall 10 mm M4 screws Mounting bracket Straight out from wall 10 mm M4 screws 2 4 Installation ...

Page 19: ...10 LAN Bridge MB connects to networks in these ways To a thin coax thick coax fiber optic or twisted pair cable network through transceivers attached to the bridge s AUI connectors The illustration above shows the use of compact transceivers available from Hewlett Packard that attach directly to the AUI connector and do not require the use of an AUI cable Directly to a thin coax cable network thro...

Page 20: ...secure it with the retainer s screws Tighten the screws until they are snug do not overtighten them 3 Attach the network cable to the transceiver Note The Signal Quality Error SQE Test signal can be either enabled or disabled on a transceiver attached to the bridge The bridge ignores SQE Test signals AUI port on bridge transceiver or AUI cable AUI retainer connector post 2 6 Installation ...

Page 21: ...eze the surfaces together around the edges Note 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 BNC T thin LAN cable thin LAN cable ThinLAN port on bridge OR mid cable attachment ThinLAN port on bridge BNC T 50 ohm...

Page 22: ...nly while self test is running appoximately 30 seconds The Fault and Net Fail LEDs are OFF The Receive and Transmit LEDs will begin flashing if there is any traffic on the network If the LED pattern is different refer to Diagnosing With the LEDs in chapter 5 Troubleshooting Note One of the features of the HP 10 10 LAN Bridge MB is that during self test and initialization it checks the status of th...

Page 23: ... Bridge MB has a console interface for customizing the configuration monitoring bridge activity and running diagnostics Proceed to chapter 3 Configuration for the procedures to connect a terminal to the bridge and customize the bridge s configuration 4 Customize the bridge s configuration if needed Installation 2 9 ...

Page 24: ......

Page 25: ... table command An Internet Protocol IP address can be assigned to the bridge so it can be managed remotely from a network management station over a TCP IP network IPconfig command The bridge operating state can be changed OPerating state command Up to two wildcard filters can be added deleted and changed WIldcard command See Configuration Commands in this chapter for details on these commands See ...

Page 26: ...witch 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 Main The baud rate for communication between the bridge and the terminal is set automatically when you press RETURN If you have configured a bridge access passw...

Page 27: ...Connectors 4 At the remote site connect the terminal or PC emulating a terminal to the remote modem Make sure the terminal and modems are functioning properly then establish the link between the terminal s modem and the bridge s modem according to the modem instructions 5 Press RETURN several times for the prompt Main The baud rate for communication between the bridge and the terminal is set autom...

Page 28: ...he 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 bridge s baud rate to the desired rate for example 9600 by using the console s Speed command see Console Commands later in this chapter 4 Set the terminal s configuration to this new baud rate and press RETURN again for the prompt ...

Page 29: ...ter IP at the Config prompt to start the IP config command Use this command if you wish the bridge to be accessible using IP the Internet Protocol If either of the following is true you must set the IP configuration parameters on the bridge The bridge will be managed remotely with a network management product such as HP OpenView Interconnect Manager over a TCP IP network a network operating system...

Page 30: ... IP to start the IP configuration process The current IP configuration values are displayed followed by the IP config prompt 2 From the IP config prompt enter CH to change the configuration then follow the prompts and instructions on the screen You will be prompted to enter values for the parameters listed on the next page 3 When you have finished your changes you can enter RE at the prompt to rea...

Page 31: ...vices on your IP network Primary Default Router 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 Backup Default Router 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 rou...

Page 32: ...unction see chapter 6 How the Bridge Works Note The bridge uses the address table differently when it is in learning mode than when it is in secure mode If you change the operating state from a learning mode state Learning or Learning STP to a secure mode state Secure or Secure STP or from a secure mode state to a learning mode state to prevent the wrong packets from being transmitted between the ...

Page 33: ... where the wildcard filter is to be applied Use the format bbbb bbbb bbbb bbbb bbbb bbbb bbbb bbbb NNNN For each bit position b enter either 1 0 or X You must enter one of these characters for all 32 bits in the filter and at least one of the characters must not be X Enter the byte offset NNNN as a one to four digit decimal value This value specifies the location in the received packet at which th...

Page 34: ...vendor code but all 32 bits must be specified Xs are used for the last 8 bits since a specific match in those bit positions is not needed Filtering on Vendor Code in the Source Address The source address is the second field in IEEE 802 3 and Ethernet packets so the byte offset is 6 the first field is 6 bytes long To use the vendor code in the source address field to discard packets from Hewlett Pa...

Page 35: ...its hardware and firmware and to remove some transient problem conditions The self test routines are run by resetting the bridge 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 This chapter describes these topics Console commands...

Page 36: ...mand driven and has three menus of commands Main Menu commands are used to set certain console session characteristics to run diagnostics and to access the other menus Config Mode commands are used to customize the bridge configuration and to edit the address table Status Mode commands are used to check the bridge status to gather bridge activity statistics and to read the bridge configuration Ent...

Page 37: ...n Menu commands Displays a single screen listing all available console commands HElp Lists and briefly explains the console commands that can be entered at the current prompt Figure 4 1 shows the help from the Main prompt Figure 4 1 Main Menu Commands Operation 4 3 ...

Page 38: ...ed access of the bridge from network management stations and through the bridge s console interface Once you set a password you will be prompted for it each time you start a bridge console session and each time you use an HP network management product to change the bridge configuration The same password is used for both applications You can delete the password by changing it to a null string just ...

Page 39: ... 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 5 Troubleshooting REset Runs the bridge self test and resets and initializes the bridge See Resetting the Bridge later in this chapter for a more detailed description of the effect of this command SPeed Prompts you for a console port baud rate Normal...

Page 40: ...from the destination node before reporting an error A one second timeout value is usually sufficient Note The destination node must be an 802 3 device that can respond to the test packets Ethernet devices do not recognize 802 2 test packets See chapter 5 Troubleshooting for more information on using the Testlink command for testing the network TIme Displays the amount of time since the last time t...

Page 41: ...en with all available console commands listed HElp Lists and briefly explains the console commands that can be entered at the current prompt Figure 4 2 shows the help from the Config prompt The rest of the Config Mode commands are explained in detail in chapter 3 Configuration Figure 4 2 Config Mode Commands Operation 4 7 ...

Page 42: ...mmands see figure 4 3 Displays a single screen with all available console commands listed HElp Lists and briefly explains the console commands that can be entered at the current prompt Figure 4 3 shows the help from the Status prompt Figure 4 3 Status Mode Commands 4 8 Operation ...

Page 43: ... The current bridge operating state Spanning tree state The current state of the bridge as determined by STP Possible states are blocking listening learning forwarding and disabled If the bridge operating state is not one that supports STP the spanning tree state will be disabled For more information on the meaning of the spanning tree states refer to the IEEE specification 802 1d MAC Bridges Topo...

Page 44: ...the bridge receive buffers are full Outbound packets discarded The number of packets discarded because the bridge transmit buffers are full CRC errors The number of packets received for which the bridge detects a CRC error Packets with CRC errors are discarded Carrier lost errors The number of times the bridge has detected a loss of the network activity indicator carrier when transmitting a packet...

Page 45: ...vailable They are designated as REset command Reset button cycle power and Reset Clear Effects of the Reset Methods Each of these reset methods causes the bridge to execute self test and re initialize but there are differences in the other effects of each reset Table 4 1 summarizes these effects Note The Reset button and cycling power on the bridge perform the same functions The Reset button is th...

Page 46: ...tries are cleared Operating state is changed to default Learning Wildcard filters are cleared Password is erased Console port hardware is reset Modems are disconnected Other bridge hardware components are reset Status counters and port statistics are cleared Code in battery backed RAM is overwritten with the code in EPROM Configuration changes are copied from battery backed RAM to the active circu...

Page 47: ...ge unplug the power cord from the bridge and then plug it back in Note that this process has the same effect as the reset button The reset button is the preferred method Reset Clear 1 Simultaneously press the two buttons labeled Reset and Clear on the bridge The Clear button is recessed To press it use a non conducting pointed implement like a toothpick 2 Release the Reset button and continue hold...

Page 48: ...e password was erased you will not be prompted for it Note Use care when clearing the bridge access password Once the password is erased access to the bridge console commands and the bridge configuration capabilities from an HP network management station will no longer be password protected Password protection can be restored by using the Password command PA on the bridge console See PAssword unde...

Page 49: ...d in to a power source If the ThinLAN BNC connector is being used as the Port 1 connection make sure the connector is properly terminated both sides have properly terminated cables attached or one side has a terminated cable and the other side has a 50 ohm terminator See Port Connections in chapter 2 of this manual Check the LEDs The LEDs are described in chapter 1 under Back of the Bridge LED pat...

Page 50: ...power source If OK bridge 5 V power has failed Replace the bridge OFF Check power cord and power source If OK bridge 12 V power has failed Replace the bridge ON ON OFF Bridge hardware failure detected during self test Replace the bridge ON ON ON Port fault detected on the indicated port during self test Check cables connections transceivers if used etc For the bridge to pass self test a viable net...

Page 51: ...elf test Net Fail ON ON ON OFF ON Fault detected during normal operation on the network attached to the indicated port Check cables connections transceivers if used etc ON ON ON OFF OFF Bridge fault detected during normal operation Reset the bridge to run its self test See table 5 1 to interpret the results Troubleshooting 5 3 ...

Page 52: ... connectors to one of the port 1 connectors AUI or BNC to the port 2 AUI connector and to the console port 3 Plug the power cord back into the power source and the bridge will execute its power on self test 4 See table 5 1 to interpret the LED pattern when the power on self test completes approximately 30 seconds the Self test LED goes out If necessary to verify that both port 1 connectors are fun...

Page 53: ... the attached LANs are properly terminated and operational For the external loopback the bridge sends packets addressed to itself out on both LAN ports The external loopback test fails if the packets are not returned to the bridge The Net Fail LED will turn ON for the port that did not receive the packet and the Fault LEDs on the front and back of the bridge will turn ON Execute these tests by res...

Page 54: ... devices will not respond correctly to the test packets Use the console s Ping command to run a network layer test Enter PI at the Main prompt on the bridge s console interface See Ping in chapter 3 for details This test sends a specified number of ICMP Echo Request packets to a specified destination node on one of the LANs attached to the bridge You identify the node by its IP address The destina...

Page 55: ...ng the packet source node is on the same LAN as the node for which the packet is intended destination node If the source and destination nodes are on the same LAN the bridge discards the packet If the source and destination nodes are on opposite LANs the bridge determines whether the packet will be forwarded to the other port for transmission to the destination node The forwarding decision is dete...

Page 56: ...table is described later in this chapter Learning STP The bridge functions the same as under the Learning operating state and it supports the Spanning Tree Protocol STP It can therefore operate as a backup bridge in a network with multiple possible paths between nodes on the LANs STP is described later in this chapter Secure The bridge allows communication only between those nodes whose addresses ...

Page 57: ...s table accurately reflects the current position of the bridge in the network the dynamic addresses are aged out of the table If the bridge does not see a packet with a given source address for 300 seconds that address is deleted from the table Permanent Addresses These addresses come pre configured into the address table and cannot be deleted or changed They include the bridge s own station addre...

Page 58: ... mode if a packet is received with a destination address that matches a static entry in the address table the packet is discarded In learning mode there is a limit of 256 static entries In secure mode either Secure or Secure STP operating states you add static entries to the table only for those nodes allowed to communicate across the bridge In secure mode a packet will only be forwarded if it has...

Page 59: ...t patterns and byte offsets The bridge applies each filter to the received packet independently See chapter 3 Configuration for the wildcard filter configuration process and some examples These filters can be applied to any section of an IEEE 802 3 or Ethernet packet source or destination addresses packet length for 802 3 packets packet type for Ethernet packets data field and even the CRC Because...

Page 60: ...nable STP set the bridge operating state to either Learning STP if you want it to operate as a learning bridge or Secure STP if you want it to operate as a secure bridge To disable STP set the bridge operating state to either Learning or Secure Bridge Off will also disable STP but also stops the bridging function Figure 6 2 shows a network that contains three subnets connected by bridges Bridge 1 ...

Page 61: ...ridge in this configuration Note The IEEE for Spanning Tree Protocol support recommends that there are no more than seven forwarding bridges in the active path between any two nodes in the network The actual limit for your network depends on the amount and type of traffic being transmitted With careful network and traffic analysis the number of bridges could be higher but one of the goals of a goo...

Page 62: ...e bridge are discarded For more information on how the spanning tree algorithm works see the specification from the IEEE 802 1d MAC Bridges Automatic Network Verification why the bridge s ports must be terminated for self test to pass One of the features of the HP 10 10 LAN Bridge MB is that during self test and initialization it automatically tests its network ports to verify that the networks ar...

Page 63: ... LAN Bridge MB 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 bridges and other HP network devices automatically generate a...

Page 64: ...is in a TCP IP network you manually configure the bridge with an IP address using the bridge console s IP command See the IP command description in chapter 3 Configuration and see appendix D Network Addressing for more information on configuring a network layer address on the bridge When configured with an IP address the bridge can also send and respond to network layer test packets ICMP Echo Requ...

Page 65: ... 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 bridge ports are also shown in this appendix These topics are discussed HP cables Other standard cables Thin LAN cable requirements AUI cable Console connector and cable pin outs Loopback connectors C...

Page 66: ...e port Connect a terminal or PC to the console port RS 232 C Crossover cable 25 pin female 13242G 40242G 25 pin male 13242H 9 pin male 24542G 9 pin female for HP 110 92221P Connect a modem to the console port Straight through RS 232 C modem cable 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 ...

Page 67: ...rial 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 ...

Page 68: ...12 13 2 3 4 5 6 9 10 12 13 Control In circuit A Data Out circuit A Data In circuit Shield common drain Data In circuit A Voltage Common Control In circuit B Data Out circuit B Data In circuit B Voltage Plus For this connection you can use HP 92264D 1 meter thin AUI extension pin 4 not connected HP 92254A through H 6 meter through 48 meter thick AUI cables HP 92254J 5 meter thin AUI cable pin 4 not...

Page 69: ...e 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 to connect a terminal to the bridge Pin Out for Bridge s Console Port Connector PIN US CCITT DIN 1 CHS GND 101 2...

Page 70: ...e Bridge end 25 pin male Tx 2 2 Tx Rx 3 3 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 9 pin female Bridge end 25 pin male Tx 2 2 Tx Rx 3 3 Rx GND 5 7 GND 5 CTS 6 DSR 8 DCD 22 RI 23 DRS A 6 Cables and Connectors ...

Page 71: ...SR 8 DCD 22 RI 23 DRS Null Modem Adapter use with a modem cable when connecting a terminal Minimum Pin Out Modem cable end 25 pin female Bridge end 25 pin male 2 3 4 5 6 8 20 7 2 3 4 5 6 8 20 7 OR 4 5 4 5 DTR pin 20 and RTS pin 4 must be on or high on your terminal or in your terminal emulation program Cables and Connectors A 7 ...

Page 72: ...le Minimum Pin Out Modem end 25 pin male Bridge end 25 pin male Signal 2 2 Tx 3 3 Rx 4 4 RTS 5 5 CTS 6 6 DSR 7 7 GND 8 8 CD OR DCD 20 20 DTR 22 22 RI 23 23 DRS typically on V 24 European modems A 8 Cables and Connectors ...

Page 73: ...ely Contact your HP authorized LAN dealer or your local HP sales office for assistance For AUI Port HP part number 28663 63001 The following pins are connected pin 3 to pin 5 pin 10 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 pin 2 to pin 3 pin 4 to pin 5 to pin 8 pin 6 to ...

Page 74: ......

Page 75: ...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 32 F to 131 F 40 C to 70 C 40 F to 158 F Relative humidity non condensing 15 to 95 at 40 C 104 F 15 to 90 at 65 C 149 F Maximum altitude 4 6 km 15 000 ft 4 6 km 15 000 ft Cable Interfaces The ThinLAN port is compatible with the IEEE 802 3 Type 10Base2 standard The AUI ports are...

Page 76: ... V m in Europe These specifications are legal requirements in the indicated countries Datacomm Declarations United Kingdom The HP 28673A 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 Certificati...

Page 77: ...ge end For an 8 position switch set switch 4 down all others up For a 4 position switch set switch 2 up all others down At the user end 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 bridge 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...

Page 78: ...onfigure as at the bridge end except Modem Parameters Menu change to Normal Originate Hayes 1200 Smartmodem for both 8 and 10 switch units At the bridge 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 bridge end Configure with a terminal or PC using the following sequence at f c1 d2 s1q1 f0 wz Depress the ANS b...

Page 79: ...uire that the bridge 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 Internetworking Packet Exchange IPX The address that the bridge needs to communicate in an IPX network consists of a network number and a device identification T...

Page 80: ...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 Infor...

Page 81: ...d your own IP addressing scheme HP OpenView EtherTwist Network Management DOS Reference Guide HP part number 5091 3635E 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 ...

Page 82: ...ourth integer must be unique for each addressed device Do not use 0 or 255 in the fourth position They are reserved integers For three bridges and an HP network management station on the network the class C addresses might be management station 192 1 1 1 first bridge 192 1 1 10 second bridge 192 1 1 11 third bridge 192 1 1 12 See IPconfig in chapter 3 for the IP configuration procedures and descri...

Page 83: ...are not guaranteed Table E 1 Ethernet Packet Types Packet Type Company Use 0000 05DC IEEE 802 3 packet length 0200 Xerox PUP 0201 Xerox PUP Address Translation 0600 Xerox XNS IDP 0800 DOD Internet IP ARPANET 0801 X 25 Internet 0802 NBS Internet 0803 ECMA Internet 0804 CHAOSnet 0805 X 25 Level 3 0806 Address Resolution Protocol ARP 0807 XNS Compatibility 081C Symbolic Private use 0888 088A Xyplex P...

Page 84: ...e protocol 6000 DEC Experimental 6001 DEC MOP Dump Load Assistance 6002 DEC MOP Remote Console 6003 DEC DECNET Phase IV DNA Routing 6004 DEC Local Area Transport LAT 6005 DEC Diagnostic protocol 6006 DEC Customer use protocol 6007 DEC Local Area VAX Cluster LAVC 6008 DEC AMBER 6009 DEC MUMPS 6010 6014 3 COM not listed 7000 Ungermann Bass Download 7002 Ungermann Bass Diagnostic loopback 7020 7029 L...

Page 85: ...ver 8019 Apollo Hewlett Packard Apollo DOMAIN 802E Tymeshare not listed 802F Tigan Inc not listed 8035 Stanford University Reverse ARP 8036 Aeonic Systems not listed 8038 DEC LanBridge Management 8039 DEC DSM DTP 803A DEC Argonaut Console 803B DEC VAXELN 803C DEC Decnet DNA Naming Service 803D DEC CSMA CD Encryption protocol 803E DEC Decnet DNA Time Service 803F DEC LAN Traffic Monitor 8040 DEC Ne...

Page 86: ...o Integrated Automation not listed 8068 General Dynamics not listed 8069 AT T not listed 806A Autophon not listed 806C ComDesign not listed 806D Compugraphic not listed 806E 8077 Landmark Graphics Co not listed 807A Matra not listed 807B Dansk Data Elektronik not listed 807C University of Michigan not listed 807D 8080 Vitalink Communications Bridge Management 8081 8083 Counterpoint Computers not l...

Page 87: ...ed 80DD Varian Associates not listed 80DE 80DF Integrated Solutions Transparent Remote File System TRFS 80E0 80E3 Allen Bradley not listed 80E4 80F0 Datability not listed 80F2 Retix Router Management 80F3 80F5 Kinetics Appletalk ARP AARP 80F7 Apollo Hewlett Packard not listed 80FF 8103 Wellfleet Communications not listed 8107 8109 Symbolics private protocol 8130 Waterloo Microsystems not listed 81...

Page 88: ...isted FF00 BBN private protocol Table E 2 Station Address Vendor Codes Code Vendor 00000C Cisco 000020 DIAB 000022 Visual Technology 00002A TRW 00003D AT T 000055 AT T 00005A S Kock 000065 Network General 00089 Cayman Systems Gatorbox 000093 Proteon 00009F Ameristar Technology 0000A9 Network Systems 0000AA Xerox Xerox machines 0000B3 CIMLinc E 6 Ethernet Packet Types and Vendor Codes ...

Page 89: ...rlan UNIBUS or QBUS machines Apollo Hewlett Packard 020406 BBN BBN internal usage not registered 02608C 3Com 02CF1F CMC Masscomp Silicon Graphics 080002 Bridge 080003 ACC Advanced Computer Communications 080005 Symbolics Symbolics LISP machines 080008 BBN 080009 Hewlett Packard 08000A Nestar Systems 08000B Unisys 080010 AT T 080014 Excelan BBN Butterfly Masscomp Silicon Graphics 080017 NSC 08001A ...

Page 90: ...C 080036 Integraph CAE stations 080039 Spider Systems 080047 Sequent 080049 Univation 08004C Encore 08004E BICC 08005A IBM 080067 Comdesign 080068 Ridge 080069 Silicon Graphics 08006E Excelan 080075 Danish Data Elektronik DDE 08007C Vitalink TransLAN III 080080 XIOS 080086 Imagen QMS 080089 Kinetics AppleTalk Ethernet interface 08008B Pyramid E 8 Ethernet Packet Types and Vendor Codes ...

Page 91: ...or Codes continued Code Vendor 08008D XyVision XyVision machines AA0003 DEC global physical address for some older DEC interfaces AA0004 DEC local logical address for systems running DECNET Ethernet Packet Types and Vendor Codes E 9 ...

Page 92: ......

Page 93: ...o 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 If your LAN covers an area served by more than one power distribution system be sure their safety grounds are securely interconnected LAN cables may occasionally be subject to ha...

Page 94: ...cordon d alimentation ou le cordon de raccordement fourni avec le produit Lorsque cette protection semble avoir été endommagée débrancher le cordon d alimentation jusqu à ce que la mise à la terre ait été réparée Mise à la terre du câble de réseau local si votre réseau local s étend sur une zone desservie par plus d un système de distribution de puissance assurez vous que les prises de terre de sé...

Page 95: ...eterminals den Netzkabeln oder dem mit Strom belieferten Netzkabelsatz voraus Sobald Grund zur Annahme besteht daß der Schutz beeinträchtigt worden ist das Netzkabel aus der Wandsteckdose herausziehen bis die Erdung wiederhergestellt ist Für LAN Kabelerdung Wenn Ihr LAN ein Gebiet umfaßt das von mehr als einem Stromverteilungssystem beliefert wird müssen Sie sich vergewissern daß die Sicherheitser...

Page 96: ...tazione oppure al set cavo d alimentazione fornito con il prodotto Ogniqualvolta vi sia probabilità 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 se la vostra LAN copre un area servita da più di un sistema di distribuzione elettrica accertatevi che i collegamenti a terra di s...

Page 97: ...a del aparato el cable de alimentación o el juego de cable de alimentación suministrado Si existe la probabilidad de que la protección a tierra haya sufrido desperfectos desenchufar el cable de alimentación hasta haberse subsanado el problema Puesta a tierra del cable de la red local LAN Si la LAN abarca un área cuyo suministro eléctrico proviene de más de una red de distribución de electricidad c...

Page 98: ...Safety Information 6 Safety Information ...

Page 99: ...ainst 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 If this equipment causes interference to radio reception which can be determined by unplugging the power cord from the equi...

Page 100: ...wing Declaration of Conformity complies with ISO IEC Guide 22 and EN 45014 It identifies the product the manufacturer s name and address and the applicable specifications that are recognized in the European community 2 Safety Information ...

Page 101: ... 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 wr...

Page 102: ...repariert oder ersetzt Garantía Esta pieza de hardware está garantizada por HP contra defectos de materiales o manufactura por un período de un año a partir del momento en que el usuario la recibe Durante dicho período de garantía HP o un distribuidor autorizado reparará o reemplazará según su criterio aquellos productos que resulten defectuosos Garantie Hewlett Packard garantit le matériel d info...

Page 103: ... to a transceiver Some transceivers have a cable permanently attached others require a separate cable HP offers a set of compaact transceivers that attach directly to the bridge s AUI ports AUI port The attachment unit interface AUI port on the bridge The AUI port connects to a LAN cable through a transceiver Often there is an AUI cable although some transceivers attach directly to the AUI port ba...

Page 104: ...ressed to a node on the other LAN the bridge transmits it onto the other LAN for the destination node See also address filtering broadcast address The station address FFFFFF FFFFFF Packets intended for all nodes on a LAN use this address as the destination address broadcast packet A packet sent to all nodes on a LAN collision The result of two or more nodes on a LAN transmitting at the same time p...

Page 105: ...e accessed by users on any of the LANs See also LAN fiber optic cable Communication cable made with a core of glass or other light transmitting filaments It uses a signal encoded light beam and depends on internal reflection for transmission Because it does not use electrical or magnetic flux it is unaffected by environmental conditions like lightning fiber optic transceiver A transceiver that con...

Page 106: ...ithin a limited geographical area Two common LANs IEEE 802 3 and Ethernet have compatible cabling requirements and can co exist on a common installation but have different protocols A LAN might connect computers on adjacent desks within a building or within several buildings of a campus See also extended LAN LAN cable The medium through which data moves in a LAN LAN cables come in many types For e...

Page 107: ... address packet A bit stream consisting of predefined fields that contain data addresses and control information In the IEEE 802 3 environment this structure is often referred to as the MAC frame Packet is used in the Ethernet environment and is used in this guide because it is the more commonly understood term Different protocols have different packet and frame specifications protocol A set of ru...

Page 108: ...the IEEE plan is referred to as a device s globally administered station address Some devices provide an option for the user to assign a different station address that will override the original This type of address is referred to as a locally administered station address The HP 10 10 LAN Bridge MB uses a globally administered station address only The station address is also commonly called a MAC ...

Page 109: ...ysical connection and access to a LAN It is the device on the LAN that detects collisions A transceiver is also called a medium attachment unit or MAU in the IEEE 802 3 standard wiring closet An enclosed central point for cabling to meet and where signal routing occurs Bridges are frequently put into the wiring closet It is also called a telecommunications closet Glossary 7 ...

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Page 111: ...9 AUI cable description A 4 AUI connector procedures for using 2 6 AUI Enabled LED 1 6 AUI loopback connector A 9 auto detection of port connector 1 2 automatic address learning 1 2 automatic network verification 6 8 B back of the bridge 1 5 BNC connector procedures for using 2 7 BRidge info command 4 9 Bridge Off operating state 6 2 bridge temperature indication 4 9 bridging function description ...

Page 112: ...on clearing the bridge access password 1 6 4 14 description 1 6 effects on the bridge 4 12 how to use 4 13 commands config mode menu 4 7 configuration description 3 5 main menu 4 3 status mode menu 4 8 COnfig command 4 4 config mode commands 4 7 how to start 4 4 configuration address table 3 5 changes that can be made 3 1 commands 3 5 IP configuration 3 5 operating state 3 8 what the default provi...

Page 113: ...n 3 2 status mode commands 4 8 terminal configuration 3 2 terminating a session 4 4 used in bridge configuration 3 1 COunters command 4 10 D default configuration IP configuration 3 5 operating state 3 8 static address table entries 3 5 wildcard filters 3 9 description of the bridge 1 1 destination node definition 6 1 diagnostic tests PIng command 5 6 testing the bridge 5 4 testing the bridge and ...

Page 114: ... the bridge 1 4 functions of the bridge 1 1 H HElp command from config menu 4 7 from main menu 4 3 from status menu 4 8 how the bridge works address table 6 3 automatic network verification 6 8 bridging function 6 1 firmware enhancements 6 9 network management 6 9 operating state 6 2 spanning tree support 6 6 wildcard filters 6 5 I included parts 1 3 installation connecting networks to the bridge ...

Page 115: ... the current values 4 11 IPX address automatic determination 3 6 D 1 for network management over Novell networks D 1 L learning mode description 6 4 effect of static addresses in 6 4 Learning operating state 6 2 Learning STP operating state 6 2 LEDs bridge status 1 5 checking for burned out LED 5 1 interpreting the display 5 2 on the bridge back 1 5 on the bridge front 1 4 patterns showing operati...

Page 116: ...2 IPX address for Novell networks D 1 required for network management D 1 network management access password 4 4 address table changes 6 3 general description 6 9 IP address for TCP IP networks D 2 IP configuration 3 5 IPX address for Novell networks 3 6 MIB extensions 6 10 network address 6 10 operating state changes 6 2 over Novell networks D 1 over TCP IP networks 3 5 D 2 network traffic statis...

Page 117: ...s influencing 6 1 packet statistics counters 4 10 parts list 1 3 password bridge access protection 4 4 method for clearing 4 14 PAssword command 4 4 console and network management access 4 4 how to remove the password 4 4 permanent address definition 6 3 pin out AUI cable A 4 console cables A 5 console connector A 5 PIng command basic description 4 5 troubleshooting tool 5 6 port statistics counte...

Page 118: ...1 REset command 4 5 reset clear caution 4 11 S secure mode description 6 4 effect of static addresses in 6 4 Secure operating state 6 2 Secure STP operating state 6 2 Self test LED 1 5 self test requirements for passing 5 1 6 8 source node definition 6 1 spanning tree protocol backup bridge definition 6 8 description 6 6 determining the bridge s current state 4 9 effect on bridge operation 6 6 for...

Page 119: ...4 5 status LEDs on the bridge back 1 5 on the bridge front 1 4 port indicators 1 6 status mode commands 4 8 how to start 4 5 T TCP IP networks IP address 3 5 D 2 managing the bridge over D 2 technical specifications B 1 B 2 terminating thin LAN cables 2 7 testing bridge and LANs 5 5 bridge only 5 4 network links 5 6 testing the links PIng command 4 5 TEstlink command 4 6 TEstlink command basic des...

Page 120: ...s 5 5 testing the network links 5 6 TEstlink command description 4 6 V vendor codes list of known vendor codes E 6 use in wildcard filters 3 10 verifying bridge operation 2 8 version and state information 4 9 W WIldcard command from the config menu 3 9 from the status menu 4 11 wildcard filters byte offset 3 9 configuration process 3 9 description 6 5 effect on bridge operation 6 5 examples 3 9 ho...

Page 121: ...esem Dokument beschriebene Produkt erfüllt bestimmte internationale Kontrollvorschriften Für Informationen über die zutreffenden Kontrollvorschriften lesen Sie bitte das Kapitel mit der Überschrift Regulatory Statements Informazioni sulla regolamentazione Il prodotto descritto in questo documento è conforme alle specifiche normative internazionali Vedere la sezione del documento intitolata Regulat...

Page 122: ... Copyright 1992 Hewlett Packard Company Printed in U S A 03 92 Manual Part Number 28673 90001 ...

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