3Com CS/2500 Installation Manual

Contents

6-6 CHAPTER 6: TROUBLESHOOTINGDumping Memory to aTFTP HostTo write a memory dump to a TFTP host, you must set the boot protocolto TFTP, and the TFTP Upload Path parameter in the firmwareconfiguration must indicate where the dump should be written onto thehost. Refer to your TFTP server documentation to determine theappropriate directory. For information about the TFTP Upload Pathparameter, refer to Table 4-3 on page 4-11.Dumping Memory toDiskettesYou can dump memory to the communications server’s diskette driveonly if the Auto-Reboot option has been disabled before the crash, and ifthe reset switch on the server’s front panel has not been pressed. Use theFirmware Configuration Utility to set the Auto-Reboot parameter to“Boot monitor,” as described in Chapter 4, “Configuration.” If thisparameter is set to “Reboot only,” the communications server rebootsautomatically after a failure, overwriting RAM. If it is set to “Uploadthen reboot” the communications server does not allow a memory dumpto be written to a diskette.To write a memory dump to the CS/2600 diskette, you need four ormore high-density (2 MB) 3.5-inch diskettes (1.44 MB formatted). Youdo not need to format the diskettes. The du command automaticallyperforms this step.The memory dump procedure reinitializes the monitor and saves thecontents of memory. To write the memory contents to diskette, followthese steps:1 Enter monitor mode, as explained in “Entering the Firmware Monitor”on page 4-1.In some instances, a crash may leave the disk drive unusable becausesome monitor parameters were overwritten. In this case, the server mayrespond with an error message. To recover, enter the soft resetcommand:k2 From the console, enter the dump command:duThe server prompts you with the following:Enter the density of the dump diskettesEscape to abort the dumpCS2500BookFile : Troubleshooting Page 6 Thursday, December 11, 1997 10:44 AM