[c-nsp] Sup720 hanging after rommon starts loading IOS

Brielle Bruns bruns at 2mbit.com
Mon Apr 22 15:33:41 EDT 2013

On 4/22/13 10:40 AM, "Rolf Hanßen" wrote:
> Hello,
> after 2 afternoons of trial and error I now got it running.
> I replaced the memory modules (RP and SP Ram, not the flash) and could
> boot from the 64MB flash modules then.
> The CF card was still not accepted.
> I needed to boot into some older image, format the CF card in disk0 of the
> Sup720.
> Then needed to copy the files again via TFTP to CF, move the CF card to
> the adapter and boot the image via rommon.

RAM on the Sup720's MSFC3 can be picky.  I'd have to look it up to 
confirm, but at some point during the production of the MSFC3, Cisco 
changed RAM types it uses.

Have managed to fix 'broken' Sup720-3bxl boards that refuse to boot by 
swapping them to the older RAM types, and suddenly they are happy.

Brielle Bruns
The Summit Open Source Development Group
http://www.sosdg.org    /     http://www.ahbl.org

More information about the cisco-nsp mailing list