3Com CS/2500, Installation Manual

Page: 86 / 116

6-6 C
HAPTER
6: T
ROUBLESHOOTING
Dumping Memory to a
TFTP Host
To write a memory dump to a TFTP host, you must set the boot protocol
to TFTP, and the TFTP Upload Path parameter in the firmware
configuration must indicate where the dump should be written onto the
host. Refer to your TFTP server documentation to determine the
appropriate directory. For information about the TFTP Upload Path
parameter, refer to Table 4-3 on page 4-11.
Dumping Memory to
Diskettes
You can dump memory to the communications server’s diskette drive
only if the Auto-Reboot option has been disabled before the crash, and if
the reset switch on the server’s front panel has not been pressed. Use the
Firmware Configuration Utility to set the Auto-Reboot parameter to
“Boot monitor,” as described in Chapter 4, “Configuration.” If this
parameter is set to “Reboot only,” the communications 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 memory dump procedure reinitializes the monitor and saves the
contents of memory. To write the memory contents to diskette, follow
these 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 because
some monitor parameters were overwritten. In this case, the server may
respond with an error message. To recover, enter the soft reset
command:
k
2 From the console, enter the dump command:
du
The server prompts you with the following:
Enter the density of the dump diskettes
Escape to abort the dump
CS2500BookFile : Troubleshooting Page 6 Thursday, December 11, 1997 10:44 AM