From: Jay Hennigan (jay@west.net)
Date: Sun Sep 14 2003 - 23:51:32 GMT-3
On Sat, 13 Sep 2003, Yunming Song wrote:
> Hi Group,
>
> I bought Flash memory and try to upgrade them for
> Cisco 4700, 2621, 2501, and get some problems:
>
> Device not programmable
> Device does not contain a valid magic number
>
> Is this serious? what is exact procedures to upgrade
> Flash memory for above routers? For 4700 and 2501,
> they have bootflash memory.
Flash chips contain an identifying number of the chip type and manufacturer.
The boot ROMs in the router check this number to verify that the flash is
of a type that is programmable by the router hardware and encoded routine.
If the flash returns a number that the boot ROM doesn't recognize, you will
get this error.
There are at least three potential causes:
* The boot ROMs contain older code, and your flash chips aren't supported
with that version of boot ROM, but are by later versions. Solution,
replace the boot ROMs (often free or for the cost of shipping depending
on who at Cisco you know or how you ask.)
* The flash memory you bought is the wrong type, and not compatible with
any version of boot ROMs. Solution, contact the vendor for the correct
flash.
* The flash memory you bought is the correct type, but defective. Solution,
contact your vendor for replacement.
The "show flash chips" command may be useful for troubleshooting or checking
against boot ROM versions.
-- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net WestNet: Connecting you to the planet. 805 884-6323 WB6RDV NetLojix Communications, Inc. - http://www.netlojix.com/***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
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