3Com CS/2500 manual Operating Problems

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Operating Problems

6-3

2If you are booting from a network, make sure that your network is operational and that the communications server is configured to use the network boot source.

3When you are prompted to enter the monitor, enter N to retry the boot sequence.

4If the problem happens again, enter Y to access the monitor.

5At the > prompt, enter bt to boot from diskette (use the original software distribution diskette rather than your working diskette), or press the reset switch.

If the boot succeeds and your boot source is a diskette, make a new copy of your software distribution diskette using the procedure in “Copying and Formatting Diskettes” on page 3-4. Otherwise, refer to Chapter 4, “Configuration,” to check the configuration of the Initial Boot Source parameter.

6If the problem 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 operation.

Meaning:	A flashing Self Test LED indicates a software failure. A
	lighted Boot State LED indicates a hardware failure.
Action:	In either event, take the following action:

1Reset the server by pressing the reset switch.

2If the problem persists, perform the following steps:

aUsing a nonconductive object such as a plastic stylus, press the hardware interrupt switch.

The hardware interrupt switch is located on the server’s left side (viewed from the front of the server) close to the front, as shown in

Image 83

Contents CS/2500 Series 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Iii Page Contents Installation Maintenance and Upgrades PIN Assignments Technical Support Page Figures Tables Conventions About this GuideIntroduction AudienceThis Typeface Italics Italics are used to denote new terms or emphasis About this Guide Ten standard RS-232-D electrical interfaces FeaturesFeatures OverviewSW/2500, can be used only with the CS/2500 and CS/2600 SoftwareCompatibility Panel, see Back Panel on ChassisHardware Interrupt Front Panel Its +5 V DC output CS/2500 and CS/2600 back panel, shown in -5, contains Power supply module and three types of connectorsBack Panel Overview Back Panel Overview Mount Kit SpecificationsOptional Rack VAC Preparation InstallationDo the following before beginning the installation Installation Install brackets Turning on the server Cabling the ServerTo the Network All ports are set to terminal SETDefault -TERM DeVice = Installation End to the transceiver Slide-lock connection on the serverInstall brackets Modifying ConfigurationAC power source must meet the requirements outlined Configuration, and Appendix C, Monitor UtilityInstallation Startup Guide or software release notes Diskette Booting fromDiskette Rbcs filesStartup 3Com Corporation CS/2000 Series Monitor Reading...OK Insert copy and hit return to continue Parameter changes Shutting Down Boot ProblemsNormal Startup MessagesShutting Down Startup Firmware Monitor ConfigurationEntering Configuration Following menu is displayed ProcedureChanging SLP Changing the Configuration Configuration Changing the Configuration Next section SLP, and Trivial File Transfer Protocol TftpUsed with 3Com Network Control Servers NCSs Com no longer Tftp Type B Change IP/TFTP Parameters menu appearsConfiguration Bootp Software and to operate in mixed environments Emulating aCS/2000 or CS/2100 Changing Port Configuration Changing Port Configuration Configuration Maintenance Maintenance and UpgradesMaintenance 3Com recommends the following procedures for preventiveMaintenance and Upgrades Maintenance Reinstall the fuseholder cartridge in the receptacle Upgrade procedures require you to remove the server cover UpgradesRemoving the Server Cover Rear Grasp both sides of the cover and carefully lift it off8-F Pull taut to expose screw Voltages. There are no user-serviceable parts inside Upgrades Remove Connector from Each pin must be inserted properly into its socket Replace the cover, as described in the next section EPROM. Each pin must be inserted properly into its socketUpgrades Maintenance and Upgrades Troubleshooting Troubleshooting Operating Problems Troubleshooting Memory Dump ProceduresEnter the density of the dump diskettes Return to use the default density 2mb Troubleshooting PIN Assignments Figure A-1 Serial Connector Pin NumberingTXD DTE Transceiver DO-S Slct Startup Messages Appendix B Startup Messages Monitor Utility You can access the monitor in either of the following waysNonfunctional Set the Auto-reboot parameter to Boot monitorContinuous Self-Test and Initial Boot Source parameters Dump Procedures on Memory dumps, refer to Memory Dump Procedures on-2 on page 1-4. The switch is recessed into a round hole to Become nonfunctional, enter the following commandSyntax BT From memory location Procedures onUsing this menu, refer to , Configuration Filename and address parameters specify the nameDescription Repeats the previous command On-line Technical Services3Com Bulletin Board Service 3ComBBS Technical SupportPress Return to see the ThreeComForum main menu Country Telephone Number Hong Kong 852 2537 44 1442 408 727 Appendix D Technical Support Sender’s expense To obtain an RMA number, call or fax Returning ProductsFor Repair 10/25/95 Numerics IndexCover Index Index Index Index Limited Warranty Bayfront Plaza Santa Clara, CA 408 764-5000 1/1/94