From: David L Stewart (D.Stewart@xxxxxxxxxxxxxxx)
Date: Thu Feb 21 2002 - 09:38:10 GMT-3
14336K/2048K bytes of memory is the DRAM size. It is
14 MB for shared memory and 1 MB for I/O. The FLASH
size is almost the last line of the sh ver.
There are two types of flash, single sided with one bank
and double sided with two banks. Either should work as
long as your boot roms support them. (If you have two
routers with mismatched SIMMs, you should swap them to
make them match.)
Your checksum problem can be two things. If you are
using the Cisco TFTP server that runs on a Windows PC, it
is very unreliable over about 10 MB. Try setting R1 as
the TFTP server and copy from it.
R2 and R3 may have 12 MB of Flash. This is unsupported.
Some folks do it by putting an 8 MB flash in SIMM slot 0
and a 4 MB flash in SIMM position 1. Take the SIMMS out
and make sure they say ...2000... If any say ...1000...
they are probably 4 MB flash. Swapping them around or
putting them in SIMM slot 0 one at a time and booting the
router will tell you for sure what size they are.
At 10:43 PM 2/20/2002, Giveortake@aol.com wrote:
>I have three 25xx routers in question. All have 16mb flash.
>
>R1 has flash in two banks equalling 16mb 2x2x2x2x2x2x2x2
>
>R2 & R3 have flash in THREE banks equalling 15mb 1x1x1x1x1x1x1x1x2x2x2x2
>
>I have put an IOS image on R1 that is about 14.5k. Took fine. I am trying
>to tftp this image to the other two, but it alway has invalid checksum.
>Show ver is the same on all three as it pertains to showing the flash:
>cisco 2500 (68030) processor (revision L) with 14336K/2048K bytes of memory
>
>Whats going on here? How can a 25xx have three banks? Is the third bank
>on the board? No IOM MEM statements in any of the configs....
>
>Any thoughts out there?
>
>Thanks,
>
>David
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