Technical data

Using Technician Interface Software
8-38
303561-A Rev 00
Upgrading and Verifying a PROM
You use the
prom
command to upgrade or verify the software on a diagnostics or
bootstrap PROM in a Bay Networks router or BayStream platform. Only users
who login as “Manager” can access the
prom
command.
If a software release includes a PROM software upgrade, see the upgrade
documentation shipped with the software for instructions on upgrading the
PROMs on your router. The instructions describe
• How to determine the models of router that need a PROM update
• How to determine whether you must upgrade the PROMs in a specific model
of router by using the Technician Interface
prom
command, or by physically
replacing the existing PROM device with a new PROM device
• How the PROM upgrade process works
• How to determine the current versions of PROM images residing in a router
• What you need to know about upgrading PROMs in a remote router
• How to specify the commands necessary to upgrade and verify a PROM
During an update, the system erases the image stored in the target PROM and
writes the new image into the PROM. This is sometimes called “burning” the
PROM. To verify the image update, the system compares the contents of the new
image file to the image file in the PROM.
Caution:
If you do not follow these instructions, you may disable the router you
are trying to upgrade.