From: Jonathan V Hays (jhays@jtan.com)
Date: Fri Apr 11 2003 - 23:03:54 GMT-3
This post may be of interest, regarding invalid checksum and downloading
IOS images through a firewall:
http://www.groupstudy.com/archives/ccielab/200301/msg01758.html
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of songsrong
> Sent: Friday, April 11, 2003 8:08 PM
> To: ccielab@groupstudy.com
> Subject: cisco 2500 router upgrade problem.
>
>
> I am upgrading the IOS (12.2 code) on a cisco 2503. I got the
> "invalid checksum" every time when I finished the download.
> The router has 16M flash as displayed below:
>
> r2-2503(boot)#sh flash
>
> System flash directory:
> File Length Name/status
> 1 16505800 c2500-jk8os-l.122-1d.bin [invalid checksum]
> [16505864 bytes used, 271352 available, 16777216 total]
> 16384K bytes of processor board System flash (Read/Write)
>
> I have used different TFTP servers for the upgrade. If I only
> upgraded the IOS which was less than 8 M, there was no problem.
>
> I can not upgrade the code bigger than 8M at all, even some
> of the IOS are 14M or 13M. Can someone help?
>
> Thanks.
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