IBM SC30-3681-08 manual Loading an Image at a Specic Time, Conguring Dumping, Dump Files

Using the Boot CONFIG Process

Loading an Image at a Speci®c Time

There may be occasions when you may want to load an image into a device on a speci®c day and time when you will be unavailable. You can con®gure the device to perform a timed load using the timedload activate command. Other commands allow you to view a device's scheduled load information or cancel a scheduled load. See ªBoot CONFIG Commandsº on page 93 for information on these commands.

Con®guring Dumping

An important feature of the 2210 is the ability to dump the contents of system memory and processor's registers to another host during a system reset that results from a software crash, hardware failure, or by pressing the reset button.

To con®gure dumping, do the following from theBoot config> prompt:

1.Add address.

This can be the same as the boot address used in con®guring booting.

2.Add a dump entry.

This is the location of the host or server that is going to receive the dump ®le. You can add a dump entry with the add dump-entrycommand. The average size of a dump ®le is 8 MB.

3.Enable dumping.

Dumping will not work unless you enable it using the enable dumping command. Dumping will remain enabled until you use the disable dumping command to terminate it.

Dump Files

Dump ®les contain the contents of the system memory and processor registers.

When the device crashes and dumping is enabled, the contents of memory are written to a remote host using TFTP. Each dump entry contains the location of the host server and the path, timeout, and ®le names for the dump ®les.

You can con®gure the device to automatically append a unique character string to the dump ®le names. This prevents an existing dump ®le from being overwritten by subsequent dumps. However, unique naming of the dump ®les can cause the server's disk to become full if there are successive dumps. Unique naming may also be incompatible with the security requirements of some TFTP servers. Some servers require that a ®le already exist on the server to allow writing the dumps.

Dump ®les are for diagnostic purposes only. Enable the device's dump and unique-naming capabilities only on the advice of your Customer Service representative.

TFTP Server, Boot and Dump Directories

You must create directories on the destination server to contain the boot and dump ®les. These directories must reside on a host server and the boot directories must

Chapter 7. The Boot CONFIG Process 89