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6-8

C

HAPTER

 6: T

ROUBLESHOOTING

VERSion

 . This command provides both the software version string and 

the firmware version number. If the software fails to boot, the firmware 
version number appears in the power-up message when a console is 
attached and Monitor is enabled. Press the front panel reset button to 
obtain this message.

■

The transceiver brand name and model number

■

How much of the server is affected (that is, a single port, several ports, 
or the entire unit)

■

A description of any symptoms present before the crash

■

The text of any error messages that appeared on the console at the time 
of the crash (if a console was attached and Monitor was enabled)

■

The text of any error messages that appeared on the console during any 
step of the dump procedure, and a description of any action taken to 
recover from the error (for example, skipped the step, repeated the step 
successfully)

■

The frequency of the problem

You may also be asked to send a copy of the working diskette (Model 
CS/2600 only) or a copy of the communications server software loaded 
on the hard disk of your RBCS or TFTP/FTP server. To make a copy of 
the working diskette, follow the procedure in “Copying and Formatting 
Diskettes” on page 3-4. 

Restarting

To reboot the server after a memory dump, enter 

bt

 to boot from the 

working diskette (Model CS/2600 only), or press the reset switch.

CS2500BookFile : Troubleshooting  Page 8  Thursday, December 11, 1997  10:44 AM

Summary of Contents for CS/2500

Page 1: ... CS 2500 SERIES COMMUNICATIONS SERVER INSTALLATION GUIDE Part No 09 0263 001 Published December 1995 CS2500BookFile FrontMatter Page i Thursday December 11 1997 10 44 AM ...

Page 2: ...a copy please contact 3Com and a copy will be provided to you Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com is a registered trademark of 3Com Corporation 3TECH is a trademark of 3Com Corporation 3ComFacts is a service mark of 3Com Corporation CompuServe is a registered trademark of CompuServe Inc U...

Page 3: ...his digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the interference causing equipment standard entitled Digital Apparatus ICES 003 of the Department of Communications Avis Canadien Cet appareil numérique respecte les limites bruits radioélectriques applicables aux appareils numériques de Classe A prescrites dans la norme sur le maté...

Page 4: ...iv CS2500BookFile FrontMatter Page iv Thursday December 11 1997 10 44 AM ...

Page 5: ...nt Panel 1 4 LEDs 1 5 Reset Switch 1 6 CS 2600 Internal Diskette Drive 1 6 Back Panel 1 6 Serial I O Connectors 1 7 RS 232 Interface 1 7 RS 422 Interface 1 8 Console Port 1 8 Transceiver Connector 1 9 Printer Port Connector 1 9 Power Supply Module 1 9 Optional Rack Mount Kit 1 10 Specifications 1 10 CS2500BookFile CS2500BookFileTOC Page v Thursday December 11 1997 10 44 AM ...

Page 6: ...the Network 3 1 Installing Software on an RBCS Server 3 1 Installing Software on a Generic TFTP FTP Host 3 2 Booting from an RBCS Server 3 2 Booting from a Generic TFTP FTP Host 3 3 Remote Reboot 3 3 Booting from Diskette 3 3 Copying and Formatting Diskettes 3 3 Formatting Diskettes without the Copy Command 3 6 Booting the Communications Server 3 6 Normal Startup Messages 3 7 Boot Problems 3 8 Shu...

Page 7: ...e Diskette Drive Head 5 2 Replacing the Fuse 5 2 Upgrades 5 5 Removing the Cover 5 6 Replacing the Diskette Drive 5 8 Replacing the Power Supply 5 10 Replacing Memory Chips 5 13 Replacing EPROMs 5 14 Replacing the Cover 5 15 6 TROUBLESHOOTING Startup Problems 6 1 Operating Problems 6 3 Memory Dump Procedures 6 5 Dumping Memory to an RBCS Server 6 5 Dumping Memory to a TFTP Host 6 6 Dumping Memory ...

Page 8: ...tering the Monitor C 1 Configuring Firmware to Access the Monitor C 2 At Startup C 2 If the Server Becomes Nonfunctional C 2 Using the Hardware Interrupt Switch C 3 Using Commands C 4 Command Descriptions C 4 BT C 4 CO C 5 DE C 5 DF C 5 DU C 5 FC C 5 FO C 6 H or C 6 K C 6 UP C 6 C 6 CS2500BookFile CS2500BookFileTOC Page viii Thursday December 11 1997 10 44 AM ...

Page 9: ... D 1 Access by ISDN D 2 World Wide Web Site D 2 ThreeComForum on CompuServe D 2 3ComFacts Automated Fax Service D 3 Support from Your Network Supplier D 3 Support from 3Com D 4 Returning Products for Repair D 4 LIMITED WARRANTY CS2500BookFile CS2500BookFileTOC Page ix Thursday December 11 1997 10 44 AM ...

Page 10: ...x CS2500BookFile CS2500BookFileTOC Page x Thursday December 11 1997 10 44 AM ...

Page 11: ...5 3 5 2 Opening the Fuseholder Cartridge 5 4 5 3 Removing the Server Cover 5 6 5 4 Server Components 5 7 5 5 Memory Chip and EPROM Locations on Motherboard 5 8 5 6 Removing the Diskette Drive 5 9 5 7 Removing the Power Supply 5 12 A 1 Serial Connector Pin Numbering A 1 A 2 Cable Wiring for Serial Port in Regular RS 422 Mode A 3 A 3 Cable Wiring for Serial Port in Automatic RS 422 Selection Mode A ...

Page 12: ...quirements 1 11 1 6 Environmental Requirements 1 11 2 1 Console Port Configuration 2 5 4 1 Firmware Configuration Parameters 4 4 4 2 Address Discovery Protocol Parameters 4 10 4 3 IP Addressing Parameters 4 11 A 1 RS 232 Serial Port Pin Assignments A 2 A 2 Transceiver Connector Pin Assignments A 4 A 3 Printer Port Pin Assignments A 5 C 1 Firmware Commands C 4 CS2500BookFile CS2500BookFileLOT Page ...

Page 13: ...ide and the Multiprotocol Communications Server Reference Guide If the information in the release notes shipped with your product differs from the information in this guide follow the release notes Audience This guide is intended for network administrators who have experience in planning maintaining and troubleshooting local area networks and who will be responsible for configuring and managing co...

Page 14: ...ort When the word command is used in this guide it indicates that all variables in the command have been supplied and you can enter the command as shown in text for example Remove the IP address by entering the following command SETDefault 0 IP NETaddr 0 0 0 0 For consistency and clarity the full form syntax upper and lowercase letters is provided However you can enter the abbreviated form of a co...

Page 15: ...or they may be shown as Return or Esc If two or more keys are to be pressed simultaneously the keys are linked with a plus sign for example Press Ctrl Alt Del Italics Italics are used to denote new terms or emphasis Table 2 Text Conventions continued Convention Description CS2500BookFile AboutThisGuide Page 3 Thursday December 11 1997 10 44 AM ...

Page 16: ...4 ABOUT THIS GUIDE CS2500BookFile AboutThisGuide Page 4 Thursday December 11 1997 10 44 AM ...

Page 17: ...CS 2500 series consists of Model CS 2500 and Model CS 2600 shown in Figure 1 1 Figure 1 1 CS 2500 and CS 2600 Communications Servers Features CS 2500 and CS 2600 communications servers offer the following features Ten standard RS 232 D electrical interfaces Support for RS 422 Transmit and Receive Data only over RS 232 serial interfaces CS 2500 CS 2600 2 MB memory RS 232 support RS 422 support tran...

Page 18: ...del CS 2600 has a 3 5 inch internal diskette drive This model can boot either over the network or locally from the internal diskette drive Software Compatibility Models CS 2500 and CS 2600 communications servers use different software versions from the earlier models CS 2000 and CS 2100 The software versions listed in Table 1 1 and other software with the prefix SW 2500 can be used only with the C...

Page 19: ...CS 2500 series enclosure including hardware features common to both models For a more detailed view of the back panel see Back Panel on page 1 7 Table 1 2 Software Compatible with CS 2000 and CS 2100 Software Label and Version TCP SW 2000 T 4 1 or later SW 200 TCP 3 2 or later TCP LAT SW 2000 TL 4 0 or later OSI TCP SW 2000 OT 1 0 or later CS2500BookFile Overview Page 3 Thursday December 11 1997 1...

Page 20: ...ole port and passing control to the monitor utility For information on the monitor utility refer to Chapter 4 Configuration and Appendix C Monitor Utility If the server crashes or stops working entirely you may need to use the hardware interrupt switch to reboot or to perform a memory dump For more information concerning memory dumps refer to Chapter 6 Troubleshooting 3Com CS 2600 Reset switch Pow...

Page 21: ...de viewed from the front of the server are for air intake The vents on the right side are for air exhaust Front Panel The front panel has six LED indicators and a reset switch Figure 1 3 shows the front panel of the CS 2500 diskless server Figure 1 4 shows the front panel of the CS 2600 which includes a 3 5 inch diskette drive The front panel label shows the model number providing easy identificat...

Page 22: ...uring operation to indicate no boot source or software failure Boot State Off On during software boot turns off if boot is successful Lights cyclically or remains on if boot source is not present or responding Also indicates hardware failure during operation continued Data Received Flashing Flashes when the server detects data being received from an I O port Used to verify proper physical attachme...

Page 23: ...The drive can accommodate 1 MB or 2 MB unformatted capacity 720 KB or 1 44 MB formatted diskettes This drive is used for booting system software and for performing memory dumps following a server failure The diskette is also used during operation to maintain software configuration information Back Panel The CS 2500 and CS 2600 back panel shown in Figure 1 5 contains the power supply module and thr...

Page 24: ...ck panel correspond to port numbers used by multiprotocol communications server software connector J0C corresponds to port 0 connector J1C to port 1 and so on RS 232 Interface The default serial I O interface for the CS 2500 series is RS 232 D For information about pin assignments refer to Appendix A Pin Assignments RS 422 Interface CS 2500 series serial ports also support RS 422 Transmit Data and...

Page 25: ...en 110 and 9600 bits per second bps This rate is in effect any time the port is in monitor mode The rate is independent of the rate set for the port in multiprotocol communications server software For firmware configuration procedures refer to Chapter 4 Configuration Transceiver Connector The CS 2500 series provides an Ethernet network interface labeled 802 3 Transceiver at the upper right corner ...

Page 26: ... module is located on the left side of the server s back panel It includes the power supply power switch fuseholder and power cord receptacle as shown in Figure 1 6 The switch is marked according to international I O convention When the I side is pressed the switch is on when the O side is pressed the switch is off The single fuse is mounted in a removable cartridge Refer to Chapter 5 Maintenance ...

Page 27: ...2 Specifications This section describes CS 2500 and CS 2600 exterior hardware specifications electrical requirements and environmental requirements The following tables list the CS 2500 series physical dimensions electrical requirements and environmental conditions recommended for safe reliable operation Fuse holder cartridge Power cord receptacle AC switch Table 1 4 Physical Dimensions Attribute ...

Page 28: ...tching Maximum current consumption 1 8 A Fuse 3 A 250 V fast blow 5 mm x 20 mm Maximum power consumption 161 W Heat dissipation 550 BTU h Table 1 6 Environmental Requirements Requirement Parameter Minimum Maximum Temperature Operating 41 F 5 C 104 F 40 C Nonoperating 4 F 20 C 140 F 60 C Altitude Operating Sea level 15 000 ft 4 572 m Nonoperating Sea level 40 000 ft 12 191 m Relative humidity Opera...

Page 29: ...tems on the packing list 3 Inspect the server for shipping damage If you find any damage contact the shipping company to file a report If you must return the server to your network supplier or 3Com ship it in its original shipping carton If the original carton was damaged in shipment repack the server in a carton that provides equivalent protection 4 Verify that the power specifications listed on ...

Page 30: ... Mounting in a Rack You can order an optional rack mounting kit with your CS 2500 series server 3Com part number 3C759 This kit consists of two brackets nuts and screws that allow you to mount the server in a two or four pole 19 inch rack You need 1 and 2 Phillips screwdrivers to mount the server in the rack You will probably need two people one person to hold the server and the other to attach it...

Page 31: ...ould hold the server between the poles of the rack while the other attaches the server to the poles Attach the server to the rack with the four 10 32 panhead screws using the 2 Phillips screwdriver as shown in Figure 2 1 Tighten each screw securely Figure 2 1 Mounting in a Rack brackets 4 40 screws CS 2600 3Com Install server in rack CS 2600 3Com Install brackets CS2500BookFile Installation Page 3...

Page 32: ...n cause damage Cabling Hosts Terminals and Modems Connect the server to hosts terminals and modems through serial port connectors J0 through J9 You can buy cables from 3Com or use your own cables The communications server acts as a DCE device and can be attached to a DTE device such as a terminal host or printer using a straight through cable If you want to connect the server to a DCE device such ...

Page 33: ...ctor Attaching RS 232 and RS 422 Serial Cables Attach the serial cable to the server by inserting the connector into one of the back panel serial ports labeled J0 through J9 Using a small slotted screwdriver tighten the screws on both sides of the connector Cabling a Console The default console port is J0 and the default console port data rate is 9600 bps Because port J0 is the default you must at...

Page 34: ...igure a port as the console port and then enable the monitor that port cannot be used for another type of device Attach the cable from the server to the terminal as shown in Figure 2 2 Back of server AC power connector MODEM port Back of terminal Serial cable AUX port Cable guard Attach cable to port J0 CS2500BookFile Installation Page 6 Thursday December 11 1997 10 44 AM ...

Page 35: ... transceiver while the server is turned on can damage the transceiver Attach one end of the transceiver cable to the connector labeled 802 3 Transceiver on the communications server s back panel Attach the other end to the transceiver Attaching a Printer Cable Attach the DB 25 end of the printer cable to the printer port labeled Parallel Printer on the back panel Attach the Centronics end of the c...

Page 36: ...e does not match your requirements contact your network supplier for assistance To attach the power cable follow these steps 1 Make sure that the AC power switch is in the O or off position 2 Attach the power cable to the receptacle on the back panel 3 Plug the other end of the power cable into an AC power source Install server in rack CS 2600 3Com Install brackets CS2500BookFile Installation Page...

Page 37: ...ver s firmware is preset at the factory for basic installations in most cases you do not need to reconfigure it If you want to customize your server s operation you may need to modify the default settings of certain firmware parameters You can access these parameters through the monitor utility For information on firmware configuration and the monitor utility refer to Chapter 4 Configuration and A...

Page 38: ...2 10 CHAPTER 2 INSTALLATION CS2500BookFile Installation Page 10 Thursday December 11 1997 10 44 AM ...

Page 39: ...tions without changing the default firmware configuration If you want to change the firmware configuration do so before booting the server For more information refer to Chapter 4 Configuration If you plan to use a console to access the monitor you must first make sure the console is operating correctly Refer to Cabling a Console on page 2 5 Booting from the Network The CS 2500 which has no diskett...

Page 40: ...for TFTP FTP servers is supplied on a distribution diskette in 3 5 inch DOS or UNIX tar format To install this software refer to the Multiprotocol Communications Server Operation Guide or software release notes Booting from an RBCS Server The following steps describe how to boot the communications server from an RBCS server 1 Make sure the communications server is turned off 2 If the communication...

Page 41: ...hange IP TFTP Parameters submenu Remote Reboot If you plan to reboot your communications server remotely from an RBCS or TFTP server you must set the Auto Reboot parameter to Reboot For information on configuring this parameter refer to Chapter 4 Configuration Do not connect or disconnect a console during the boot process Connecting or disconnecting the console cable puts the communications server...

Page 42: ... is in the disk drive remove it If the communications server is configured to use a network boot source disconnect it from the network or make sure that it is not listed in the boot database of an RBCS or TFTP FTP server To determine whether the server is in the boot database of an RBCS server refer to the Remote Boot and Configuration Services User s Guide 4 Turn on the unit or if it is already o...

Page 43: ...te type f The following prompt appears Insert diskette to be formatted Enter the density to begin formatting operation Escape to abort the format Return to use default density 2Mb You can also format diskettes without the copy command Refer to Formatting Diskettes without the Copy Command on page 3 6 10 Insert a blank 2 MB high density diskette 1 44 MB formatted Make sure that the diskette is not ...

Page 44: ...pe n 15 When the copy procedure is completed remove the newly created diskette and label it with the software version Store the original diskette in a safe place and use a newly created diskette as your working diskette Make sure the working diskette is not write protected Once you have copied your diskettes you are ready to start the server Refer to Booting the Communications Server on page 3 7 f...

Page 45: ... on press the reset switch All LEDs on the front panel light briefly when the server is turned on or reset The Power and Self Test LEDs should remain on after the others turn off If they do not turn off the server by pressing the O side of the power switch Verify that the power cord is connected properly to a working outlet then turn on the server again The Self Test LED remains on during self tes...

Page 46: ...plier Boot Problems If the Self Test LED remains on longer than one minute the unit has failed the test Contact 3Com or your network supplier If a terminal is attached to the port designated as the console port check it for confirmation of the failure The server may not always be able to report the failure on the console for example CPU failure Report the failure and console messages if any to 3Co...

Page 47: ...ons Server Software Reference Guide 3 To shut down a CS 2500 turn the power off On a CS 2600 wait until the disk drive LED goes out then turn the power off If the disk drive LED remains on enter monitor mode by pressing the hardware interrupt switch and the Return key on the console keyboard If the disk drive LED remains on after you press the hardware interrupt switch perform a soft reset by ente...

Page 48: ...3 10 CHAPTER 3 STARTUP CS2500BookFile Startup Page 10 Thursday December 11 1997 10 44 AM ...

Page 49: ...If for any reason the data in your current working diskette becomes corrupted you can use the backup copy to restore the desired settings For instructions for copying diskettes refer to Copying and Formatting Diskettes on page 3 4 Entering the Firmware Monitor To use the Firmware Configuration Utility you must place the communications server in monitor mode This mode suspends normal operation and ...

Page 50: ... unit or if it is already on press the reset switch on the front panel to reboot CAUTION Do not press the hardware interrupt switch in the next step while the Self Test LED is on Doing so can corrupt memory or firmware configurations This LED can take up to a minute to go out 5 After the Self Test LED has gone out press the hardware interrupt switch on the left side panel to enter monitor mode WAR...

Page 51: ...rn to the Firmware Configuration Utility menu press the Return key Firmware Configuration Utility Commands C Change parameters D Display parameters es c Exit to monitor Current Parameters Ethernet address 080002025DAC Console baud rate 9600 Console port 0 Continuous self test Disabled Auto reboot Reboot only Monitor Disabled Initial boot source Floppy then Network Number of reboots 00 Network boot...

Page 52: ...r prompt 8 Press the reset switch or turn off the server to exit monitor mode Current Parameters 1 Console baud rate 9600 2 Console port 0 3 Continuous self test Disabled 4 Auto reboot Reboot only 5 Monitor Disabled 6 Initial boot source Floppy then Network 7 Number of reboots 00 8 Network boot string _cs200 9 Boot retries Try Forever A Boot protocol SLP P Printer setup menu S System default confi...

Page 53: ...ing _cs200 9 Boot retries 0 Try One Time F Try Forever A Boot protocol B BTP Boot S SLP Boot T TFTP Boot B Change IP TFTP parameters This option appears only when the boot protocol is TFTP See Using TFTP on page 4 9 P Printer setup menu 1 Issue a LF after CR 2 Do not issue a LF after CR 3 Add a printer setup string 4 Delete printer setup string S System default configuration menu 1 Change default ...

Page 54: ...eBoot command require the server to be rebooted Boot monitor puts the server into monitor mode so it can be rebooted by the user This setting prevents the communications server from rebooting after a crash and allows the network manager to perform a memory dump or debugging procedures You can perform memory dumps from a CS 2500 to an RBCS or TFTP FTP server You can perform memory dumps from a CS 2...

Page 55: ... first checks whether a diskette is in the drive if no diskette is present it tries to boot from the network If you choose Network then Floppy the server first tries to boot from the network if unsuccessful it tries to boot from diskette In either case if Boot Retries is set to Forever the server continues trying the two methods alternately unless interrupted by the user If you select Monitor the ...

Page 56: ...er continues trying to boot until a suitable boot source is discovered Boot Protocol Determines the file transfer protocol the communications server uses when it downloads software from an RBCS or generic TFTP FTP server The choices are Bridge Transport Protocol BTP System Load Protocol SLP and Trivial File Transfer Protocol TFTP BTP is a 3Com proprietary load protocol This protocol was formerly u...

Page 57: ...ery Protocol to specify the boot protocol and others to specify IP addressing information To specify TFTP parameters 1 Type T for TFTP from the Boot protocol submenu The Change Parameters display reappears with a new option B for IP TFTP parameters 2 Type B The Change IP TFTP Parameters menu appears Current Parameters 1 Console baud rate 9600 2 Console port 0 3 Continuous self test Disabled 4 Auto...

Page 58: ...tory or in Network Information Service NIS maps BOOTP is similar to RARP but can return more information The Address Discovery option also determines how the communications server downloads files from the boot server If BOOTP is used the filename to download is obtained from the BOOTP server If RARP or Local Information is used the server attempts a TFTP download of the file named in the Network B...

Page 59: ...IP address of the communications server This parameter is required if Local Information is specified for address discovery protocol otherwise this address is obtained by BOOTP or RARP Server IP address The IP address of the RBCS or TFTP FTP server the communications server boots from BOOTP requests are sent to this address If this address is not specified BOOTP requests are sent to the broadcast a...

Page 60: ...00 or CS 2100 You can configure your CS 2500 or CS 2600 to run like a CS 2000 or CS 2100 respectively Emulation allows you to run earlier versions of software and to operate in mixed environments Running in emulation mode imposes some restrictions Because the CS 2000 and CS 2100 provide only 1 MB of memory you are limited to that amount in emulation mode You cannot access the printer interface in ...

Page 61: ...ng prompt appears You must now power cycle or reset the box to continue After the communications server reboots it is in CS 2000 series mode To reconfigure the server to CS 2500 series mode follow the same procedure Changing Port Configuration You can configure individual ports for either RS 232 or RS 422 operation The default is RS 232 To change port configuration follow these steps 1 Change defa...

Page 62: ... locked out of the monitor if the port configuration does not match the console type 3 To change a port back to RS 232 type 2 At the prompt type the numbers of the ports to be reconfigured and press the Return key Again you do not need to separate the numbers by spaces or commas To change all ports to RS 232 type A 4 To enable automatic RS 422 port selection for pin 25 only type 4 This option allo...

Page 63: ...toggle To disable it type 4 again Automatic RS 422 selection requires a different configuration for the RS 422 connector in which pin 22 acts as a loopback for pin 25 For more information refer to Appendix A Pin Assignments 5 To exit the System Default Configuration Menu press the Escape key CS2500BookFile Configuration Page 15 Thursday December 11 1997 10 44 AM ...

Page 64: ...4 16 CHAPTER 4 CONFIGURATION CS2500BookFile Configuration Page 16 Thursday December 11 1997 10 44 AM ...

Page 65: ...ing procedures for preventive maintenance Observe the environmental requirements listed in Table 1 6 on page 1 12 Temperatures outside the recommended range can impair reliability and cause diskette access errors Keep the area around the server clean Avoid accumulated dust especially around the air intake slots For Model CS 2600 only Handle the software distribution and working diskettes carefully...

Page 66: ...the heads Use only alcohol based solvents 2 Immediately insert the cleaning diskette in the drive 3 Press the reset switch and wait until the Boot State light and the activity light on the diskette drive go out 4 Press the reset switch three more times each time waiting until the activity light on the diskette drive goes out Replacing the Fuse The server s fuse is located inside the power supply m...

Page 67: ...e clip insert is clear of the fuseholder cartridge pry the spent fuse from the fuse clip with the screwdriver 6 Replace the old fuse with a new fuse of the same type size and rating Use a 2 A 250 V fast blow fuse 5 mm by 20 mm WARNING For continued protection against fire hazard replace the fuse only with a fuse having the same type and rating ATTENTION Pour éviter le risque d incendie ne remplace...

Page 68: ...fuseholder cartridge in the receptacle Figure 5 2 Opening the Fuseholder Cartridge Autoranging power module Pull up plastic retainer Fuse Fuse clip insert Fuseholder cartridge Flip CS2500BookFile MaintenanceUpgrades Page 4 Thursday December 11 1997 10 44 AM ...

Page 69: ... service representative immediately If the information in release notes shipped with an upgrade kit differs from the information in this guide follow the release notes WARNING Do not open the power supply It contains hazardous voltages There are no user serviceable parts inside VORSICHT Öffnen Sie niemals das Netzteil Hochspannung Es sind keine zu wartenden Teile enthalten AVERTISSEMENT Ne pas ouv...

Page 70: ...turned off and the power cord is either disengaged from the unit s receptacle or unplugged from the wall socket 2 If the server is mounted in a rack remove it from the rack Remove the rack mounting brackets from the sides of the server 3 Remove the black screws shown in Figure 5 3 with a 1 Phillips screwdriver Figure 5 3 Removing the Server Cover CS2500BookFile MaintenanceUpgrades Page 6 Thursday ...

Page 71: ...OMs that can be replaced Figure 5 4 Server Components Rear Front Daughtercard assembly and diskette drive CS 2600 only Power supply WARNING Hazardous voltage Do not open No user serviceable parts inside Memory chips RAM EPROMs Printer cable Transceiver connector and cable Motherboard Ribbon cable connectors Power wiring harness connector CS2500BookFile MaintenanceUpgrades Page 7 Thursday December ...

Page 72: ...cing screws and connectors Follow this procedure 1 Make sure server power is off and the power cord is unplugged 2 Remove the cover as described in Removing the Cover on page 5 6 3 Perform the steps illustrated in Figure 5 6 a Disconnect the ribbon cables from the side of the daughtercard mounted on top of the diskette drive bracket step 1 in Figure 5 6 Note the orientation of the cables EPROMs Me...

Page 73: ...ough to the rear to lift it off the standoffs e Disconnect the power wiring harness from the connector on the rear of the diskette drive step 5 in Figure 5 6 Figure 5 6 Removing the Diskette Drive 4 Remove the remaining ribbon cable from the connector on the rear of the diskette drive Be careful to note the orientation of the cable Rear Front Power supply WARNING Hazardous voltage Do not open No u...

Page 74: ... of the chassis c Fasten the bracket to the chassis with the screw 8 Reconnect the ribbon cables to the daughtercard mounted on top of the diskette drive bracket Be sure to replace the cables in their original orientation 9 Replace the cover as described in Replacing the Cover on page 5 15 Replacing the Power Supply If any component in the power supply module other than a fuse fails you must repla...

Page 75: ... 2600 only disconnect the cable attached to the rear of the daughtercard mounted on top of the disk drive bracket Pull it toward you to expose the mounting screw that fastens the power supply module to the bottom of the chassis step 2 in Figure 5 7 c Remove the mounting screw step 3 in Figure 5 7 d Slide the power supply module toward the front of the server and lift it out step 4 in Figure 5 7 Th...

Page 76: ...the screw 5 For Model CS 2600 only reconnect the cable from the diskette drive to the daughtercard 6 Reconnect the power supply cable bundle to the connector on the motherboard Make sure you keep the connector keys aligned 7 Replace the cover as described in Replacing the Cover on page 5 15 Rear Front Power supply WARNING Hazardous voltage Do not open No user serviceable parts inside Motherboard D...

Page 77: ...beveled top edge of the chip faces the left side of the chassis when viewed from the front of the server 4 Remove a new memory chip from its antistatic foam shipping pad If the pins have been bent carefully straighten them Orient the chip with the beveled corner closest to the front of the server All memory chips must have the same orientation CAUTION Failure to place the memory chips correctly wi...

Page 78: ...driver or an EPROM pulling tool carefully pry the old EPROM out of its socket making sure not to bend the pins 6 Place the old EPROM in the antistatic foam pad Keep the old EPROM until the server has been powered up and tested with the new firmware Refer to Appendix B Startup Messages 7 Remove the new EPROM from its antistatic foam shipping pad If the pins have been bent carefully push the side of...

Page 79: ...the server 2 If you are remounting the server in a rack replace the rack mounting brackets on the sides of the server 3 Using a Phillips screwdriver tighten the black screws in the corners of the cover until snug Do not overtighten 4 If you installed rack mounting brackets in step 2 remount the server in the rack Refer to Figure 2 1 on page 2 3 to see how the server is mounted in a rack 5 Recable ...

Page 80: ...5 16 CHAPTER 5 MAINTENANCE AND UPGRADES CS2500BookFile MaintenanceUpgrades Page 16 Thursday December 11 1997 10 44 AM ...

Page 81: ...hese problems are indicated by abnormal behavior of front panel LEDs or by error messages on the console To enable error reporting on the monitor port do the following 1 Enter monitor mode as explained in Entering the Monitor on page C 1 2 At the monitor prompt enter fc to start the Firmware Configuration Utility 3 Type C to change parameters Set the Monitor parameter to Enabled and the Initial Bo...

Page 82: ...lier During self tests the Self Test LED remains on for longer than about a minute or the console displays an error message Meaning The server has failed a self test Action The server may not always be able to report a failure on the console for example CPU failure If a lighted Self Test LED is the only symptom contact 3Com or your network supplier If an error message appears on the console refer ...

Page 83: ...roblem persists contact 3Com or your network supplier Operating Problems This section lists problems the CS 2500 series server can experience while it is running multiprotocol communications server software These problems are indicated by abnormal behavior of front panel LEDs or by error messages on the console The Self Test LED flashes continually or the Boot State LED remains on during software ...

Page 84: ...work check the settings of Initial Boot Source Network Boot String Boot Protocol and Change IP TFTP Parameters for example the IP addresses configured in firmware should match the IP addresses of actual devices If you need to reconfigure a setting refer to Changing the Configuration on page 4 3 3 If the problems persists contact 3Com or your network supplier The communications server experiences o...

Page 85: ...attach a terminal to the console port and enter the upload command up to dump memory to the network or du to dump it to diskettes If Auto Reboot is set to Reboot no memory dump is performed and the contents of memory are overwritten A communications server crash is also reported in the audit trail Technical support staff can use audit trail and memory dump information to diagnose the cause of the ...

Page 86: ...server reboots automatically after a failure overwriting RAM If it is set to Upload then reboot the communications server does not allow a memory dump to be written to a diskette To write a memory dump to the CS 2600 diskette you need four or more high density 2 MB 3 5 inch diskettes 1 44 MB formatted You do not need to format the diskettes The du command automatically performs this step The memor...

Page 87: ...he server formats each disk individually then writes the memory dump to that disk The process continues until all diskettes have been formatted and written to and the memory dump is complete The server then displays the following prompt Dump completed Sending in the Memory Dump Contact your network supplier or 3Com Customer Support before sending a memory dump from your communications server Send ...

Page 88: ...a console was attached and Monitor was enabled The text of any error messages that appeared on the console during any step of the dump procedure and a description of any action taken to recover from the error for example skipped the step repeated the step successfully The frequency of the problem You may also be asked to send a copy of the working diskette Model CS 2600 only or a copy of the commu...

Page 89: ...vide RS 232 support and limited RS 422 support for connecting host and terminal devices to the server Figure A 1 shows pin numbering for these ports Figure A 1 Serial Connector Pin Numbering Table A 1 lists RS 232 pin assignments for devices attached to the serial ports The communications server acts as a DCE device and can be attached to a DTE device such as a terminal host or printer using a str...

Page 90: ...n since it is not connected to the chassis Table A 1 RS 232 Serial Port Pin Assignments Pin RS 232 D Name 3Com Name Direction Failsafe State Function 1 Not used 2 BA TXD In Break Transmit Data 3 BB RXD Out Receive Data 4 CA RTS In True Request to Send 5 CB CTS Out Clear to Send 6 CC DSR Out Data Set Ready 7 AB GND Signal Ground 8 CF DCD Out Received Line Signal Detector Data Carrier Detect 9 10 No...

Page 91: ...onfigured for automatic RS 422 port selection pin 25 is also used as a switch to detect RS 422 operation Figure A 2 shows cable wiring for a port configured for normal RS 422 mode Figure A 3 shows cable wiring when all ports are configured for automatic RS 422 port selection Figure A 2 Cable Wiring for Serial Port in Regular RS 422 Mode continued 21 Not used 22 RI Out Ring Indicator 23 DTE RXC In ...

Page 92: ...ents Pin Function Circuit Use 1 Control In Shield CI S Control In circuit shield 2 Collision Presence CI A Control In circuit A 3 Transmit DO A Data Out circuit A 4 Receive Shield DI S Data In circuit shield 5 Receive DI A Data In circuit A 6 Power Return VC Voltage common 7 Control Out unsupported CO A Control Out circuit A 8 Control Out Shield CO S Control Out circuit shield 9 Collision Presence...

Page 93: ... B Data In circuit B 13 Power VP Voltage plus 14 Power Shield VS Voltage shield 15 Control Out unsupported CO B Control Out circuit B Shell Chassis Ground PG Protective ground conductive shell Table A 2 Transceiver Connector Pin Assignments continued Pin Function Circuit Use Table A 3 Printer Port Pin Assignments Pin Server Interface Pin Printer Interface Signal Source Description 1 1 Strobe Serve...

Page 94: ...4 Unassigned 15 32 Error Printer 16 31 Initialize Printer 17 36 Unassigned 18 33 Signal ground 19 19 Signal ground 20 21 Signal ground 21 23 Signal ground 22 25 Signal ground 23 25 Signal ground Table A 3 Printer Port Pin Assignments continued Pin Server Interface Pin Printer Interface Signal Source Description CS2500BookFile PinAssignments Page 6 Thursday December 11 1997 10 44 AM ...

Page 95: ...3Com or your network supplier Refer to Appendix D Technical Support for technical support information 3Com Series 2000 Monitor Meaning The server is in monitor mode CPU Failed Test x Meaning An error was encountered in CPU test x CPU Passed C3 MMON rev xxx Meaning No errors were encountered in CPU self tests The server s firmware revision is xxx EC Failed Test x Meaning An error was encountered in...

Page 96: ... Passed xx ports No errors were encountered in SIO self tests The number of ports on the server is xx Typical power on diagnostics on a CS 2500 series server look like this Series 2000 Power up CPU Passed 2Mbyte RAM C3 MMON rev xyz EC Passed Station Address 0800F1B67068 SIO Passed 10 ports 3Com Series 2000 Monitor CS2500BookFile Messages Page 2 Thursday December 11 1997 10 44 AM ...

Page 97: ...ration of your server After using the monitor you must reboot the communications server to resume normal operation Procedures for displaying and modifying firmware parameters appear in greater detail in Chapter 4 Configuration Entering the Monitor To access the monitor utility you must attach a terminal to the console port located on the CS 2500 series server s back panel Configure the terminal to...

Page 98: ...structions on how to modify firmware parameters refer to Changing the Configuration on page 4 3 2 Reset the server by pressing the reset switch on the front panel Because the boot source has been set to Monitor the server enters the monitor utility and displays the following message 3Com Corporation CS 2000 Series Monitor If the Server Becomes Nonfunctional To configure firmware to access the moni...

Page 99: ...ont of the server close to the rear as shown in Figure 1 2 on page 1 4 The switch is recessed into a round hole to protect it from being pressed unintentionally WARNING Use only a nonconductive object such as a plastic stylus to press the hardware interrupt switch Do not use the tip of a pencil Graphite particles can cause electrical shock to the operator and can damage components on the server s ...

Page 100: ...er The filenumber parameter specifies a bootfile on the diskette Model CS 2600 only Valid entries are 0 through 9 For example enter bt 2 to boot from file 2 on the diskette Table C 1 Firmware Commands Command Function BT Boots from a specified source overriding the source specified in Initial Boot Source parameter CO Copies the contents of one diskette inserted in the disk drive to another diskett...

Page 101: ...page 3 4 DE Syntax DE filenumber Description Deletes the specified file from the diskette Model CS 2600 only Valid entries are 0 through 9 For example enter de 2 to delete file 2 from the diskette DF Syntax DF Description Lists files on the diskette Model CS 2600 only including start and end blocks length of the file and starting address DU Syntax DU Description Dumps the server s memory to a set ...

Page 102: ...he list that are not documented in this guide are for 3Com internal use only K Syntax K Description Resets the monitor s stack and internal variables called a soft reset It also resets the Ethernet and serial controllers UP Syntax UP Description Dumps the server s memory to the hard disk of an RBCS or TFTP FTP server on the network as specified in the Network Boot String parameter Syntax Descripti...

Page 103: ...nical articles This service is available via modem or ISDN seven days a week 24 hours a day Access by Modem To reach the service by modem set your modem to 8 data bits no parity and 1 stop bit Call the telephone number nearest you Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 France up to 14400 bps 33 1 69 86 69 54 Germany up to 9600 bps 49 89 627 32 188 or 49 89 627 ...

Page 104: ...service and support 3Com s latest news releases selected articles from 3TECH 3Com s award winning technical journal and more ThreeComForum on CompuServe ThreeComForum is a CompuServe based service containing patches software drivers and technical articles about all 3Com products as well as a messaging section for peer support To use ThreeComForum you need a CompuServe account To use ThreeComForum ...

Page 105: ...ng network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready Diagnostic error messages A list of system hardware and software including revision levels Details about recent configuration changes if applicable Country Telephone Number Hong Kong 852 2537 5610 U K 44 1442 2782...

Page 106: ...D 4 APPENDIX D TECHNICAL SUPPORT If you are unable to contact your network supplier see the following section on how to contact 3Com CS2500BookFile TechSupp med Page 4 Thursday December 11 1997 10 44 AM ...

Page 107: ...opened at the sender s expense To obtain an RMA number call or fax Country Telephone Number Country Telephone Number Australia Sydney 61 2 959 3020 Japan 81 3 3345 7251 Melbourne 61 3 653 9515 Mexico 525 531 0591 Belgium 0800 71429 Netherlands 06 0227788 Brazil 55 11 546 0869 Norway 800 13376 Canada 905 882 9964 Singapore 65 538 9368 Denmark 800 17309 South Africa 27 11 803 7404 Finland 0800 11315...

Page 108: ...UPPORT 10 25 95 Europe 31 30 60 29900 option 5 44 1442 275822 Outside Europe U S and Canada 1 408 492 1790 1 408 764 7290 Country Telephone Number Fax Number CS2500BookFile TechSupp med Page 6 Thursday December 11 1997 10 44 AM ...

Page 109: ...n board service D 1 C cabling console 2 5 hosts terminals and modems 2 4 power cable 2 8 printer cable 2 7 serial cables 2 5 transceiver cable 2 7 chassis 1 3 circuit assignments See pin assignments cleaning diskette drive 5 2 Client IP Address parameter 4 11 CO command C 5 compatibility software 1 2 CompuServe D 2 configuration console port 4 2 emulation mode 4 12 firmware See Firmware Configurat...

Page 110: ... command C 5 See also Firmware Configuration Utility features 1 1 File Transfer Protocol server See TFTP FTP server firmware commands booting C 4 configuration C 5 See also Firmware Configuration Utility copying diskette C 5 deleting file C 5 dumping memory to diskettes C 5 dumping memory to network C 6 formatting diskette C 6 help menu C 6 listing files C 5 repeating C 6 soft reset C 6 summary C ...

Page 111: ...ng rack 2 2 tabletop 2 2 wall 2 4 N NCS server 3 1 4 8 Network Activity LED 1 6 Network Boot String parameter 4 7 network booting from 3 1 Network Control Server server See NCS server network supplier support D 3 Number of Reboots parameter 4 7 O on line technical services D 1 P Packet Received LED 1 6 3 2 parallel printer port See printer port parameters firmware See Firmware Configuration Utilit...

Page 112: ...erver IP Address parameter 4 11 servicing See maintenance and upgrades shipping damage 2 1 shutting down 3 8 SLP 4 8 soft reset C 6 software compatibility 1 2 configuration 4 1 parameter values 4 1 running earlier versions 4 12 specifications 1 10 startup entering monitor C 2 from diskette 3 3 3 6 from network 3 1 from RBCS server 3 2 from TFTP FTP server 3 3 messages 3 7 B 1 options 3 1 problems ...

Page 113: ...emoving cover 5 6 replacing cover 5 15 diskette drive 5 8 EPROMs 5 14 memory chips 5 13 power supply module 5 10 V version firmware 3 7 W wall mount 2 4 wiring information See pin assignments CS2500BookFile CS2500BookFileIX Page 5 Thursday December 11 1997 10 44 AM ...

Page 114: ...6 INDEX CS2500BookFile CS2500BookFileIX Page 6 Thursday December 11 1997 10 44 AM ...

Page 115: ...licable warranty period Standard warranty service for software products may be obtained by telephoning 3Com s Corporate Service Center or an Authorized 3Com Service Center within the warranty period Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid insured and pac...

Page 116: ...5400 Bayfront Plaza Santa Clara CA 95052 8145 408 764 5000 1 1 94 CS2500BookFile BackMttr med Page 8 Thursday December 11 1997 10 44 AM ...

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