[c-nsp] Cisco 7200 router with AAA problem and nvram corruption

[Mack McBride]

Changes between IOS versions (check with Cisco for which ones) can cause the nvram to show as corrupt.
I think it has to do with a change of how the nvram checksum is calculated.
Of course a bad cmos battery (some are replaceable) can also cause this issue.

Mack

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of root net
Sent: Saturday, October 08, 2011 11:00 AM
To: javier
Cc: cisco-nsp
Subject: Re: [c-nsp] Cisco 7200 router with AAA problem and nvram corruption

Thanks for the confirmation. That is the process I was going to take. Do you
know of any reason why that would happen?

rootnet

On Sat, Oct 8, 2011 at 3:58 PM, javier <javier at cisco.com> wrote:

>
> On Sat, 8 Oct 2011 10:51:57 -0500, root net <rootnet08 at gmail.com> wrote:
>
> > Just want to confirm what should be done. I have a router that resulted
> in
> > a
> > bad NPE 225. Had a spare NPE 225 but it wouldn't work for some strange
> > reason. So had an old NPE 150 laying around so inserted. When the router
> > came backup noticed that a message flashed nvram corrupt on console. All
> > circuits came up lovely but now I can't access the router to possibly
> move
> > circuits to different router.
> >
> > I have the router configured with AAA for local and no backup
> > authentication. (Silly)
> >
> > What should be the steps I take to recover access to router so I can
> setup
> > AAA for local and backup auth?
>
> This should help you get access to your 7200:
>
>
> http://www.cisco.com/en/US/products/hw/routers/ps341/products_password_recovery09186a00800942d3.shtml
>
> -jav
>
>
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