IBM SC30-3681-08 IBD Considerations When Transferring a File, Validating the Conguration Load

Using the Boot CONFIG Process

The router accepts any printable ASCII character as part of the ®le name de®nition, with two exceptions:

vThe ®le name cannot begin with a numeric character

vThe ®le name cannot contain a RETURN or LF (line feed) character.

The character string can accept a space, but it is recommended that you avoid using a space character, as this character is invisible. Another user who tries to enter the ®le name without the required space receives an error message.

Note: When using a IBM 2210 as a boot server for other routers, be sure to include the complete path name to the load ®le with theadd boot-entrycommand on the booting router.

The following table contains the convention for ®lename extensions.

Table 10. Conventions for File Name Extensions

Type of File	Filename Extension
Con®guration	.cfg
Load	.ldc

IBD Considerations When Transferring a File

When transferring a ®le to the IBD consider the following:

vA full load may not ®t into one bank of the IBD.

vAny load that needs more than one bank for storage writes only to empty, numerically adjacent banks. For example, when storing a load too large for bank 2, the load is stored in bank 3, as long as bank 3 is empty.

vIf an adjacent bank is unavailable to store a large load, a TFTP Disk Full message appears on the console, the load is not stored, and the IBD remains unchanged. Any portion of the load that was stored in a bank is then removed.

Validating the Con®guration Load

There are two methods for validating an image before it is written into the device's con®guration memory:

vIn the ®rst method, the device assigns an identi®er, called Magic Number, to each platform type for the image that is archived and the image that is being

restored. If the numbers do not match, the transfer is aborted and the console displays the message Bad Magic Number.

vIn the second method, the host name for the device that originally archived the image is compared to the host name for the device that is restoring the image. If the host names do not match, the transfer is aborted and the console displays the message:

COPY error -

Got hostname "<hostname>" - is this okay (Yes or [NO])? no

This allows you to bring in the con®guration from another device even if the hostname does not match. The con®guration needs to be correct for your model device.

When a transfer fails due to a lack of RAM space, the console displays an error message.

88MRS V3.2 Software User's Guide