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Chapter 1

19

Introduction

E2050 Software/Firmware Architecture

Typical LAN Connections

The E2050 LAN/GPIB Gateway combines hardware and firmware in a single
box that provides a network gateway between network-equipped computer
systems and GPIB based instruments. The Gateway enables users of I/O
applications to obtain measurement data either locally or remotely from
GPIB instrumentation. The following figure shows typical LAN connections
for an E2050 Gateway.

Typical LAN Connections

Computer Systems

GPIB
bus

GPIB Instruments

E2050
LAN/GPIB
Gateway

LAN

LAN

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Summary of Contents for E2050

Page 1: ...Agilent E2050 LAN GPIB Gateway Installation and Configuration Guide ...

Page 2: ......

Page 3: ...0 Software Firmware Architecture 18 I O Application Software Supported 18 Typical LAN Connections 19 Software Firmware Architecture Overview 21 Using Application Software 22 2 Installation 23 Hardware Requirements 25 Software Requirements 26 Installing the Hardware 27 3 Configuration 33 Setting Configuration Values 35 Steps to Set Configuration Values 35 Configuration Values Descriptions 35 How Co...

Page 4: ...ions 79 5 Troubleshooting 81 Gateway Failure Messages 83 SICL Error Codes and Messages 83 syslog File Messages 84 Troubleshooting Network Configuration 85 Verifying Network Connections 85 Troubleshooting Network Configurations 86 Troubleshooting Gateway Configuration 88 Verifying Gateway Configuration 88 Setting Default Configuration 88 Verifying the Configuration Method 89 Changing the Configurat...

Page 5: ...ion in this document Warranty Information A copy of the specific warranty terms applicable to your Agilent Technologies product and replacement parts can be obtained from Agilent Technologies Inc U S Government Restricted Rights The Software and Documentation have been developed entirely at private expense They are delivered and licensed as commercial computer software as defined in DFARS 252 227 ...

Page 6: ...ting History Edition 1 February 1995 Edition 2 November 1995 Edition 3 May 1996 Edition 4 July 2001 Copyright Information Agilent Technologies E2050 LAN GPIB Gateway Installation and Configuration Guide Edition 4 Portions of the TCP IP software are copyright Phil Karn KA9Q Copyright 1984 1985 1986 1987 1988 Sun Microsystems Inc Copyright 1995 1996 2001 Agilent Technologies Inc All rights reserved ...

Page 7: ...ce trained personnel only The power module does not have a power switch The power cord is intended to serve as the disconnect device Make sure the power module is installed near a wall outlet and is easily accessible Radio and Television Interference This device has been verified to comply with FCC Rules Part 15 Operation is subject to these two conditions 1 this device may not cause radio interfe...

Page 8: ...ent electrical outlet so that the device and the radio or television are on separate electrical circuits n Make sure you use only shielded cables to connect peripherals to your device n Consult your dealer Agilent Technologies or an experienced radio television technician for other suggestions n Order the FCC booklet How to Identify and Resolve Radio TV Interference Problems from the U S Governmen...

Page 9: ... 4 4 1995 EN 61000 4 4 1995 IEC 61000 4 5 1995 EN 61000 4 5 1995 IEC 61000 4 6 1996 EN 61000 4 6 1996 IEC 61000 4 11 1994 EN 61000 4 11 1994 Canada ICES 001 1998 Australia New Zealand AS NZS 2064 1 Group 1 Class A 4kV CD 8kV AD 3 V m 80 1000 MHz 0 5kV signal lines 1kV power lines 0 5 kV line line 1 kV line ground 3V 0 15 80 MHz Dips 30 10ms 60 100ms Interrupt 95 5000ms The product was tested in a ...

Page 10: ...10 ...

Page 11: ...11 1 Introduction ...

Page 12: ...ure the E2050 LAN GPIB Gateway Gateway for use with supported network equipped computer systems You can also use this guide to administer the Gateway on your network and to troubleshoot installation or configuration problems This chapter includes n How to Use This Guide n E2050 Hardware Description n E2050 Software Firmware Architecture ...

Page 13: ...indows NT PC with the Gateway you must also have system administrator privileges on the Windows NT PC Guide Contents Chapter Description Chapter 1 Overview Provides an overview of the E2050 LAN GPIB Gateway Chapter 2 Installation Shows how to install the Gateway on LAN and GPIB Chapter 3 Configuration Shows how to configure the Gateway on your network Chapter 4 Administration Shows how to maintain...

Page 14: ...rocedures To develop and use SICL I O applications for the Gateway in Windows see the Agilent SICL User s Guide for Windows To develop and use SICL I O applications for the Gateway in HP UX see the Agilent SICL User s Guide for HP UX VEE To use the LAN GPIB Gateway see the VEE User s Manual for configuration procedures To develop and use VEE I O applications for the Gateway see the VEE User s Manu...

Page 15: ...wer is applied to the Gateway Fault Red Diagnostic failure of the hardware This LED will normally be off LAN Conn Yellow A TCP IP port is open Telnet or a LAN connection Flashes at a fast rate for BOOTP or a BOOTP with TFTP configuration Flashes at a slow rate when the default IP address 192 0 0 192 is used after the Config Preset button is pressed LAN Tx Yellow Flashes at 10 Hz rate when transmit...

Page 16: ... BNC connector for 10 Base2 thin coaxial cable ThinLAN NOTE Converters are available that provide an Attachment Unit Interface AUI connection 10 Base T to DB15 AUI port for ThickLAN or fiber optic networks for Ethernet IEEE 802 3 protocol You will need to purchase both a converter and a Medium Attachment Unit MAU to use the E2050 LAN GPIB Gateway with ThickLAN or a fiber optic network Contact Agil...

Page 17: ... 100 240 Vac power The separate AC power cord connects to the AC IN outlet on the power module and to a power outlet wall outlet thus providing power to the power module and Gateway You should have received the appropriate AC power cord for your country Rack Mount Kit Optional As shown in the following figure this optionally purchased E2051 Rack Mount Kit allows you to mount up to two LAN GPIB Gat...

Page 18: ... by these software products except for parallel polling SICL commander sessions and asynchronous aborting n Agilent Virtual Instrument Software Architecture VISA on HP UX or on Microsoft Windows 95 Windows 98 Windows 2000 Windows Me or Windows NT for WIN32 applications only as applicable n Agilent Standard Instrument Control Library SICL on HP UX or on Microsoft Windows 95 Windows 98 Windows 2000 ...

Page 19: ...etwork gateway between network equipped computer systems and GPIB based instruments The Gateway enables users of I O applications to obtain measurement data either locally or remotely from GPIB instrumentation The following figure shows typical LAN connections for an E2050 Gateway Typical LAN Connections Computer Systems GPIB bus GPIB Instruments E2050 LAN GPIB Gateway LAN LAN ...

Page 20: ...ion existing I O applications that are supported with the LAN GPIB Gateway and are designed for GPIB can use the Gateway without modification beyond an address change The Gateway and its attached GPIB instruments can be placed anywhere on the network rather than with a particular controller or server computer system This includes networks which span different geographic locations such as when netw...

Page 21: ...the protocol s you can use with the Gateway depending on the software product you have see Chapter 4 As shown in the following figure the client system contains the LAN client software provided with SICL as well as the TCP IP LAN software needed to access the Gateway The Gateway contains LAN server and TCP IP LAN firmware so that it acts as the LAN server The LAN client software provided with SICL...

Page 22: ...ning on those clients However at least 8 but not more than 15 client connections can be running concurrently Thus if the maximum number of client connections to the Gateway has not been exceeded the connection is allowed to occur I O Application Operation Although several instruments can be connected to the Gateway s GPIB bus only one I O application operation can occur on the GPIB bus at any give...

Page 23: ...23 2 Installation ...

Page 24: ...tion This chapter shows how to install the E2050 LAN GPIB Gateway on the LAN and the GPIB bus for use with network equipped computer systems including n Hardware Requirements n Software Requirements n Hardware Installation ...

Page 25: ...tion q 32 bit personal computer PC n A local area network LAN to which the client system s and the E2050 LAN GPIB Gateway can connect via the appropriate LAN cables n The E2050 LAN GPIB Gateway n The power module and standard power cord to provide power to the Gateway n Optionally a separately purchased rack mount kit in which you can mount the Gateway n GPIB instrument s including the GPIB cable ...

Page 26: ... you want to use with the Gateway n Agilent I O Libraries including one or more of the following q Agilent VISA on HP UX or on Microsoft Windows 95 Windows 98 Windows 2000 Windows Me or Windows NT for WIN32 applications only as applicable q Agilent SICL on HP UX or on Microsoft Windows 95 Windows 98 Windows 2000 Windows Me or Windows NT for WIN32 applications only q Agilent VEE on HP UX or on Micr...

Page 27: ...ress as you may need it later to configure the Gateway on the network Step 2 Configure the Network n If you purchased the optional rack mount kit follow that kit s documentation to assemble the rack and to install the Gateway in the rack s frame n Make sure the GPIB instrumentation you will connect to the Gateway is working properly and is connected to the GPIB bus Finding the LAN Hardware Address...

Page 28: ...made at a time Data loss may occur if you try to use both connectors simultaneously The Gateway will automatically select the active port NOTE To connect the Gateway to a ThickLAN or fiber optic network see the hardware documentation for with your ThickLAN or fiber optic network to connect the LAN cable to the RJ 45 connector on the Gateway To connect the Gateway directly to a client computer syst...

Page 29: ...on the back panel of the Gateway using a BNC T connector Make sure the ThinLAN segment is properly terminated If the Gateway is the end node on the LAN a 50 ohm BNC terminator must be attached to the T connector Connecting to a ThinLAN Using a BNC T Connector Connecting to a ThinLAN Using a BNC T Connector and 50 Ohm Terminator ...

Page 30: ... AC DC Adapter to the power input on the back panel of the Gateway as shown n Connect the standard AC power cord to AC IN on the power module and to a power outlet wall outlet as shown NOTE The power module and Gateway do not have power switches Connecting the standard AC power cord to the power source wall outlet activates both units The power module automatically adapts to the correct AC voltage...

Page 31: ...llow LAN LEDs may also be flashing Ignore the LAN LEDs at this time n The red Fault LED is illuminated briefly at power on to verify its operation If the Fault LED remains illuminated a hardware fault was found during the power on hardware self test of the Gateway Please contact Agilent Technologies for instructions Service is required only if the Fault LED remains illuminated n Once you have veri...

Page 32: ...32 Chapter 2 Installation Installing the Hardware Notes ...

Page 33: ...33 3 Configuration ...

Page 34: ...eway for the first time on your network or if you need to change the Gateway s configuration This chapter includes n Setting Configuration Values n Using Configuration Methods NOTE If the E2050 LAN GPIB Gateway is already configured and you want to change the configuration see Configuring the Gateway in Chapter 4 first Then use this chapter to reconfigure the Gateway ...

Page 35: ...ethods on HP UX or use the Telnet configuration method on Windows 95 Windows 98 Windows 2000 Windows Me or Windows NT to change or set desired configuration values for the Gateway Configuration Values Descriptions This section provides a brief description of the configuration values that are used to configure the E2050 LAN GPIB Gateway on a network The most important configuration value is the Int...

Page 36: ...signated Network Administrator who can assign the Gateway s IP address for you Value Default Value Description BOOTP ON OFF ON This value is used to enable ON or disable OFF a BOOTP or a BOOTP with TFTP configuration of the LAN GPIB Gateway This value is only used with the Telnet configuration method Default Subnet Gateway Address 0 0 0 0 This value is the IP address of the default subnet gateway ...

Page 37: ...e Gateway The maximum length of the GPIB interface name is 15 characters If VXI 11 TCP IP Instrument Protocol is used the name must be changed to gpib0 Also for VISA LAN client this name must match the name set in the IO Config utility HP IB Logical Unit 7 This value is the interface logical unit number of the GPIB interface in the LAN GPIB Gateway It may be used in a SICL client application s iop...

Page 38: ...m requesting the connection against the list of IP addresses that are allowed access to the LAN GPIB Gateway The IP address es of the computer system s are represented in dotted decimal notation with each IP address separated by a blank space The maximum length of the allow list is 125 characters Not specifying an allow list or specifying an allow list value of the asterisk wild card character all...

Page 39: ...on s need for unreachable client detection Smaller LAN timeout values will generate keepalive probes network traffic more often than larger values in an otherwise idle but healthy system using more of the available network bandwidth Subnet Mask 0 0 0 0 This value is used to enable the LAN GPIB Gateway to determine if an IP address is on the same local subnet as the LAN GPIB Gateway itself When an ...

Page 40: ...nfiguration of the LAN GPIB Gateway The TFTP file contains additional configuration values including LAN timeout I O timeout IP allow list GPIB address GPIB interface name and or GPIB logical unit The maximum length of the path to the TFTP file is 33 characters The TFTP file name is usually designated with a cfg extension There are two modes for running TFTP one which uses the TFTP home directory ...

Page 41: ...on If you have used the Telnet configuration method to set the IP address the Gateway will not send BOOTP requests at power on to configure itself Instead the Gateway will simply use the IP address and any other configuration values that were set through Telnet Prior to Successful Configuration with BOOTP or BOOTP with TFTP If you are applying power to the Gateway before it has been successfully c...

Page 42: ...er power is applied previous configuration information is not erased but the Gateway temporarily uses its default IP address That is only the IP address is reset to its default value temporarily Once you reboot or cycle the power again the Gateway will return to its actual IP address that was previously set This is helpful if you want to interrogate the Gateway at a known address in preparation fo...

Page 43: ... and the BOOTP with TFTP methods you may want to choose this method to configure the Gateway on the network You can use Telnet from either an HP UX or a Windows 95 98 2000 Me NT client system to set or change any of the configuration values for the Gateway The Telnet utility used to configure the LAN GPIB Gateway is also used to administer the Gateway after it has been configured on the network Fo...

Page 44: ...at can be used with BOOTP where more configuration values for the Gateway are set in a separate TFTP configuration file The path to this TFTP configuration file which usually has a cfg extension is set in the T144 BOOTP tag in the etc bootptab file Both the etc bootptab file and the TFTP configuration file contents are used by the bootpd daemon running on the BOOTP server to configure the Gateway ...

Page 45: ...ows 95 98 Me or Windows 2000 NT on the client computer system the Windows PC 4 From the Windows 95 98 Me task bar at the bottom of the screen select Start Programs MS DOS Prompt The MS DOS window opens Or from the Windows 2000 NT Program Manager select Main Then select MS DOS Prompt The MS DOS window opens 5 At the prompt in the MS DOS window type route add 192 0 0 192 your_system_name Enter This ...

Page 46: ...he checkbox next to Local Echo to turn it on A checkmark is displayed in the checkbox Local Echo is now set on 9 Click OK to close the Terminal Preferences dialog box Welcome to the E2050 LAN GPIB Gateway configuration utility Commands exit quit reboot status Show additional commands Exit WITHOUT saving configuration changes Save configuration changes and restart Show the LAN GPIB Gateway connecti...

Page 47: ...od the LAN hardware address hardware addr value is automatically set to the correct hardware address for this LAN GPIB Gateway Do not change the hardware address value via Telnet Its value in the Telnet configuration table is for information purposes only Configuration Value Telnet Command Default Value Hostname hostname E2050 IP Address ip 192 0 0 192 Default Subnet Gateway Address gateway 0 0 0 ...

Page 48: ...gs Any time during the Telnet session you can enter Enter for a list of available commands you can use in the Telnet utility 11 When you have changed or set all the configuration values you want for the Gateway type reboot Enter Then type y Enter to confirm your changes Rebooting activates the configuration values you have set for the Gateway 12 After you have rebooted the Gateway test that the Ga...

Page 49: ...y from 128 10 0 3 bytes 32 time 10ms TTL 255 Reply from 128 10 0 3 bytes 32 time 10ms TTL 255 Reply from 128 10 0 3 bytes 32 time 10ms TTL 255 However if ping is unable to reach the host you will see a message similar to the following This indicates the client was unable to contact the Gateway and there may be some problem with the Gateway s configuration or with the network itself If you have tro...

Page 50: ...Log into a client computer system the Series 700 HP UX workstation as root 4 At the system prompt type route add host 192 0 0 192 your_system_name Return This sets up a route table entry on your client system for the Gateway at its default IP address 5 At the system prompt type telnet 192 0 0 192 Return This connects you to the Gateway at its temporary default IP address When you are connected to ...

Page 51: ...the use of the Telnet utility to configure the E2050 Welcome to the E2050 LAN GPIB Gateway configuration utility Commands exit quit reboot status Show additional commands Exit WITHOUT saving configuration changes Save configuration changes and restart Show the LAN GPIB Gateway connection status Configuration Parameters hostname hardware addr ip default gw subnet mask syslog svr bootp lan timeout i...

Page 52: ...yntax as before to re enter the value Telnet_command value Return NOTE By using the Telnet configuration method the LAN hardware address hardware addr value is automatically set to the correct hardware address for this LAN GPIB Gateway Do not change the hardware address value via Telnet Its value in the Telnet configuration table is for information purposes only Configuration Value Telnet Command ...

Page 53: ...st that the Gateway has been successfully configured by using the ping command This command allows you to test general network connectivity between your client computer system and the LAN GPIB Gateway At the client system type ping hostname or IP_address Return For example using a Gateway s hostname ping E2050 agilent com Return Or using a Gateway s IP address ping 156 140 4 249 Return You should ...

Page 54: ...0 3 icmp_seq 2 time 2 ms A response similar to the following indicates the client was unable to contact the Gateway There may be some problem with the Gateway s configuration or with the network itself If you have trouble configuring the Gateway or want to verify that the configuration is correct see Chapter 5 E2050 agilent com PING Statistics 4 packets transmitted 0 packets received 100 packet lo...

Page 55: ...ecify the non default values that you want The following information will help you complete the entry correctly The following table lists the values you can configure In the table BOOTP Tag is the tag that the BOOTP daemon bootpd searches for in the etc bootptab file to service BOOTP requests See the next example BOOTP entry and tips to help you complete your BOOTP entry correctly For more informa...

Page 56: ...e Gateway box The IP address ip value is the address that your designated Network Administrator assigned for the Gateway The address must be in dotted decimal notation 3 Once you have added the configuration values for each of your Gateways save and close the etc bootptab file Then power on the Gateway by plugging in the power cord to the power outlet wall outlet As soon as it completes its hardwa...

Page 57: ... reaching the Gateway from the client system If your ping response is similar to the following the Gateway has been configured successfully PING E2050 agilent com 64 byte packets 64 bytes from 128 10 0 3 icmp_seq 0 time 3 ms 64 bytes from 128 10 0 3 icmp_seq 1 time 3 ms 64 bytes from 128 10 0 3 icmp_seq 2 time 2 ms If after several seconds ping does not print any lines use Ctrl C to kill ping The ...

Page 58: ...cify the non default values that you want The following information will help you complete the entry correctly The following table lists the values you can configure In the table BOOTP Tag is the tag that the BOOTP daemon bootpd searches for in the etc bootptab file to service BOOTP requests An example BOOTP entry and tips are provided to help you complete your BOOTP entry correctly For more infor...

Page 59: ..._ is not allowed The LAN hardware address ha value is the address you recorded while installing the Gateway hardware in Chapter 2 The Gateway s LAN hardware address is printed on a label on the underside of the Gateway box The IP address ip value is the address that your designated Network Administrator assigned for the Gateway The address must be in dotted decimal notation The TFTP configuration ...

Page 60: ...d to the usr tftpdir directory n Create an E2050 subdirectory under usr tftpdir n cd to the E2050 subdirectory n Create the TFTP configuration file gw1 cfg with your editor 6 Edit the TFTP configuration file adding the configuration values you desire to set for the Gateway You only need to specify the non default values that you want The following information will help you complete this file corre...

Page 61: ...ng in the power cord to the power outlet wall outlet As soon as it completes its hardware self test the Gateway will begin sending BOOTP requests to the BOOTP server While the Gateway is sending BOOTP requests the LAN Conn LAN Connect LED on the front panel of the Gateway will flash rapidly The BOOTP server should respond with the BOOTP response to configure the Gateway When the Gateway receives a...

Page 62: ...been configured successfully PING E2050 agilent com 64 byte packets 64 bytes from 128 10 0 3 icmp_seq 0 time 3 ms 64 bytes from 128 10 0 3 icmp_seq 1 time 3 ms 64 bytes from 128 10 0 3 icmp_seq 2 time 2 ms If after several seconds ping does not print any lines use Ctrl C to kill ping The ping will then report on what it found A response similar to the following indicates the client was unable to c...

Page 63: ...63 4 Administration ...

Page 64: ... provided with the LAN GPIB Gateway The Telnet utility provides a command line interface for accomplishing administration tasks including Telnet configuration of the Gateway querying the status of the Gateway and its client connections etc The chapter contents are n Using the Telnet Utility n Querying the Gateway n Configuring the Gateway ...

Page 65: ...Windows 95 98 Me or a Windows 2000 NT client computer system do the following n From the Windows 95 98 Me task bar at the bottom of the screen select Start Programs MS DOS Prompt The MS DOS window opens n From the Windows 2000 NT Program Manager select Main Then select MS DOS Prompt The MS DOS window opens 2 If you know the IP address and hostname of the Gateway do the following where IP_address i...

Page 66: ...sets up a route table entry on your client system for the Gateway at its default IP address 4 To connect you to the Gateway at its temporary default IP address use the following commands If you are using an HP UX client system type telnet 192 0 0 192 Return If you are using a Windows 95 98 Me 2000 NT client system type telnet 192 0 0 192 Enter When you are connected to the Gateway s Telnet utility...

Page 67: ...PIB Gateway configuration utility Commands exit quit reboot status Show additional commands Exit WITHOUT saving configuration changes Save configuration changes and restart Show the LAN GPIB Gateway connection status Configuration Parameters hostname hardware addr ip default gw subnet mask syslog svr bootp lan timeout io timeout allow E2050 0800091A0E02 156 140 4 249 0 0 0 0 0 0 0 0 156 140 4 244 ...

Page 68: ...to administer the E2050 LAN GPIB Gateway Many Telnet commands are for configuration purposes only These commands have a colon and italicized value parameter after them for example allow IP_address es You should use the Telnet configuration commands only if you are using the Telnet configuration method to configure the Gateway If instead you are using the BOOTP or the BOOTP with TFTP configuration ...

Page 69: ...n value for the Gateway hpib address 0 30 Set the GPIB address configuration value for the Gateway hpib name string Set the GPIB interface symbolic name configuration value for the Gateway hpib unit 1 255 Set GPIB logical unit number configuration value for the Gateway io timeout seconds Set the server I O timeout configuration value for the Gateway ip IP_address Set the IP address configuration v...

Page 70: ...hile you are using the Telnet utility by typing config at the Telnet prompt If you want to change any of the configuration values see Configuring the Gateway If you want to exit the Telnet utility with or without saving any configuration value changes see Exiting the Telnet Utility Querying the Firmware Revision You may need to determine the version of the Gateway s firmware if you contact Agilent...

Page 71: ...on method is BOOTP or BOOTP with TFTP configuration method If you want to change the configuration method see Changing the Configuration Method If you want to continue using the current configuration method but need to change one or more of configuration values see Chapter 3 to reconfigure the Gateway Querying Gateway Client Connections This section shows how to query the status of the Gateway and...

Page 72: ...P address of the client computer system that is connected to this server Client ID A unique identification ID number for the client computer system s process Always 0 for a Windows 95 98 Me 2000 NT client Sess The unique session number of a client s communication channel with a device which can be any number 1 through 256 Operation The client s I O operation currently being performed on the associ...

Page 73: ...previous example client 2 is waiting to get a lock on device 21 after client 1 completes the WRITE operation and unlocks device 21 Also client 3 is waiting for client 2 to unlock device 9 2 primary secondary before it can perform the READ operation If an Operation is specified for a given session and the session does have a Lock the operation is likely to be in progress and not waiting on another ...

Page 74: ...INT ihint LLO igpibllo LOCAL ilocal LOCK ilock ONINTR ionintr ONSRQ ionsrq OPEN iopen PASSCTL igpibpassctl READ iread READSTB ireadstb REMOTE iremote RENCTL igpibrenctl SENDCMD igpibsendcmd SETINTR isetintr SETT1 igpibsett1delay TRIGGER itrigger ixtrig UNLOCK iunlock VERSION iversion WRITE iwrite ...

Page 75: ...nging the Configuration Method Before changing the configuration mode for Windows 95 98 Me 2000 NT client systems you must use the Telnet configuration method Neither the BOOTP or the BOOTP with TFTP configuration methods are available on Windows 95 98 Me 2000 NT Before modifying the configuration method used for the Gateway you may want to determine if the Gateway is currently in use via the stat...

Page 76: ...d the bootp ON OFF value execute the reboot Telnet command to save the new configuration setting and reboot the Gateway 4 Execute a Telnet factory reset command This changes the configuration values to the default values and reboots the Gateway This will set the bootp ON OFF value to the default ON value You may now use the BOOTP or the BOOTP with TFTP configuration method NOTE The bootp ON OFF co...

Page 77: ...n see Configuration Values in Chapter 3 Viewing syslog Messages The messages logged to a file can be viewed via the syslog display Telnet command To do this at the Telnet prompt type syslog display You can also view messages by looking in the syslog file itself on the computer system acting as the syslog server In general the same messages can be viewed in either or both places However a few diffe...

Page 78: ... Gateway Maintaining the syslog File Messages written to the actual syslog file are constantly appended to the file the log file is not overwritten with new messages Therefore the syslog file may grow rather large over time and will need to be truncated or removed occasionally to regain disk space On the Gateway the syslog display messages are kept in a fixed size memory area If the syslog message...

Page 79: ... in progress and their client connections to the Gateway will be terminated The users will then need to re open new sessions on the Gateway after the reboot has occurred To terminate all client connections to the Gateway at the Telnet prompt type reboot Once the reboot occurs users who previously had open sessions on the Gateway will likely get an I_ERR_TIMEOUT or I_ERR_NOCONN error message Since ...

Page 80: ...80 Chapter 4 Administration Configuring the Gateway Notes ...

Page 81: ...81 5 Troubleshooting ...

Page 82: ...twork Configuration n Troubleshooting Gateway Configuration n Troubleshooting Client Connections NOTE This chapter references Telnet utility commands you can use to troubleshoot problems See Chapter 4 for E2050 LAN GPIB Gateway Telnet utility commands This chapter also references various configuration values See Chapter 3 for configuration values and methods used to configure the Gateway ...

Page 83: ...nd any error messages logged to a syslog file for more information I_ERR_NORSRC Out of resources No more resources are available Use the Telnet status command and any error messages logged to a syslog file for more information I_ERR_NOTSUPP Operation not supported May occur when using VXI 11 TCP IP Instrument Protocol when the hpib name is set to hpib Use the Telnet configuration utility to change...

Page 84: ... on the Gateway has been exceeded No more than 15 client connections can be running concurrently on the Gateway and fewer may be allowed depending on memory usage for existing clients Use the Telnet status command to determine the status of the current client connections on the Gateway Insufficient resources An operation could not acquire sufficient resources on the Gateway to execute This usually...

Page 85: ...lure red Fault LED remains ON The red Fault LED is illuminated briefly at power on to verify its operation 3 Make sure network packets are being transmitted on the same local subnet that is connected to the Gateway The packets do not need to be addressed to go to the Gateway You could use the ping command to generate network traffic 4 If the LAN Rx LED is flashing the Gateway is reading packets be...

Page 86: ... a response from the Gateway with the ping command If a response occurs the connection is being refused because of the IP allow list configuration values l If you are using a syslog server look for access denied messages in the syslog file See syslog File Messages for more information Telnet Configuration To correct network configuration values when using the Telnet configuration method take one o...

Page 87: ...r the BOOTP with TFTP configuration method 1 Fix the improper value in the etc bootptab file or the specified TFTP configuration file 2 Cycle the power on the Gateway or use the Telnet reboot command This will force the Gateway to use the new configuration values CAUTION Any client operations in progress and client connections will be terminated by the reboot command ...

Page 88: ...fig command to verify the current configuration settings n Telnet to the LAN GPIB Gateway and use the Telnet syslog display command to see if any TFTP configuration errors were logged during the last power on initialization of the Gateway n Examine the syslog file and check for configuration errors generated by the bootpd daemon or by the Gateway Setting Default Configuration If you want to set th...

Page 89: ... see if the Gateway is being configured via Telnet or BOOTP Consult your Network Administrator before disconnecting the Gateway from an active network 3 If the Gateway is powered on configured and has a known valid IP address Telnet to the Gateway and check the setting of the bootp ON OFF configuration value to determine the configuration method used CAUTION Any client operations in progress and c...

Page 90: ...p via the route command on the client system n Telnet to 192 0 0 192 and look at the setting of the bootp ON OFF configuration value to determine the configuration method used n Execute a Telnet reboot command If no values were changed the Gateway will use the same configuration method and have the same configuration values IP address etc as previously set NOTE If you are unable to make a Telnet c...

Page 91: ... factory reset command This changes the configuration values the default values and reboots the Gateway This also sets the bootp ON OFF value to the default ON value For HP UX client systems you can now use the BOOTP or the BOOTP with TFTP configuration method 3 Press the Config Preset button on the back panel of the LAN GPIB Gateway at the same time as you power on the Gateway This changes all co...

Page 92: ...teway and verify the LAN Conn LED is flashing slowly 4 If the Telnet to the default 192 0 0 192 IP address does not work try pressing the Config Preset button again Depending on how your network is configured the button may need to be pressed twice before the default IP address will be properly recognized and routed on the network Or one of the network values may be improperly configured on the Ga...

Page 93: ... 1 Follow the steps in Troubleshooting BOOTP Configuration 2 Verify that the TFTP server system is configured to run the tftpd daemon See the Administering ARPA Services manual for more information 3 Consult your BOOTP server documentation to verify you have the correct permissions on the specified TFTP configuration file 4 Verify that the Gateway s configuration values are correct in the TFTP fil...

Page 94: ... to the Gateway Use the ping command as follows n For a Windows 95 98 Me 2000 NT client system type ping hostname or IP_address Enter For example ping E2050 agilent com Pinging E2050 agilent com 128 10 0 3 with 32 bytes of data Reply from 128 10 0 3 bytes 32 time 10ms TTL 255 Reply from 128 10 0 3 bytes 32 time 10ms TTL 255 Reply from 128 10 0 3 bytes 32 time 10ms TTL 255 Reply from 128 10 0 3 byt...

Page 95: ...l seconds ping does not print any lines use Ctrl C to kill ping The ping command will then report on what it found For example the following indicates the client was unable to contact the Gateway The Gateway may be on a different subnet than the client see your Network Administrator or the Gateway may have incorrect network configuration values E2050 agilent com PING Statistics 7 packets transmitt...

Page 96: ...o the LAN GPIB Gateway failed for one of these reasons n A TCP IP network timeout occurred because the network connection is down or the Gateway is down n The client was denied access to the Gateway because it is not in the IP allow list Check the IP allow list configuration values and any error messages in a syslog file for more information n The Gateway has reached its maximum concurrent client ...

Page 97: ...ed either of which terminates any open client connections Check the syslog file for reboot messages I O operation fails Timeout There are several possible causes n The client may be attempting a transaction to a non existent or powered off device Check the address used as well as the status of the device n The network connection or Gateway has gone down since the previous I O operation n The I O t...

Page 98: ...nd n The network connection has gone down or the Gateway has gone down n The Gateway may be attempting a transaction to a non existent or powered off device Check the address used as well as the status of the device n The Gateway is busy performing a very long transaction to a slow device or it is waiting for input from a device n A client may be waiting for access to a device interface locked by ...

Page 99: ...99 A Specifications ...

Page 100: ...100 Specifications Specifications This appendix provides specifications for the E2050 LAN GPIB Gateway including n Power Requirements n Environmental n GPIB Characteristics ...

Page 101: ...W Maximum Operating Non Operating Storage Temperature 0 C to 40 C 40 C to 70 C Relative Humidity 15 to 80 at 40 C 90 R H at 60 C 24 hrs Total Bus length Less than 2 meters x number of devices and no more than 20 meters total length Length between devices Less than 2 meters between each device or equivalent standard load Total number of devices 15 devices or less includes Gateway Address restrictio...

Page 102: ...102 Specifications Specifications Notes ...

Page 103: ...103 Glossary ...

Page 104: ...lization sequence BOOTP server The server computer system running the bootpd daemon used in the configuration of devices on the local area network client Part of the client server model used in distributed computing A client is a computer system that requests services from a server computer system such as I O application requests networking requests and so forth controller A computer used to commu...

Page 105: ...sing a resource such as a device or interface logical unit A logical unit is a number associated with an interface In Agilent SICL a logical unit uniquely identifies an interface Each interface on the controller must have a unique logical unit server Part of the client server model used in distributed computing The server is a computer system designated to act as a main servicer of requests from o...

Page 106: ...bolic name TFTP The Trivial File Transfer Protocol which is an extension to BOOTP VEE The Agilent Visual Engineering Environment which is software used for I O application programming VISA The Agilent Virtual Instrument Software Architecture library which is software used for I O application programming ...

Page 107: ...rors 96 config command 69 Config Preset button 16 C continued configuration method changing 75 91 querying 71 verifying 89 configuration utility E2050 46 configuration values default values 36 configuration values definitions 36 setting 35 configuring the gateway 75 copyright information 6 current configuration querying 70 D declaration of conformity 9 default configuration setting 88 75 default I...

Page 108: ...s 38 69 IP allow list 38 L LAN hardware address 27 47 LAN timeout 39 LAN typical connections 19 lan timeout 69 LEDs 15 local area network LAN 25 Local Echo 46 N netstat r 92 O operation field values and SICL functions 73 P ping command 48 85 Power input 16 power on sequence 31 printing history 6 privileges super user 13 Q querying configuration method 71 querying current configuration 70 querying ...

Page 109: ...config command 69 configuration values 47 default values 47 T continued Telnet utility cont d default gw command 69 description 43 exit command 69 exiting 68 factory reset command 69 hardware addr command 69 help command 69 hostname 69 hpib address command 69 hpib name command 69 hpib unit command 69 io timeout command 69 ip command 69 lan timeout command 69 quit command 69 reboot command 69 statu...

Page 110: ...summary 85 86 Telnet 86 setting default configuration 88 Telnet configuration description 92 verifying config method 89 verifying gateway config 88 verifying network conn 85 U using the syslog file 77 V verifying configuration method 89 verifying gateway configuration 88 verifying network connections 85 version command 69 W warranty 5 web site Agilent 6 ...

Page 111: ...Part Number E2050 90003 Printed in U S A E0701 E2050 90003 ...

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