[c-nsp] Cisco3750 %AAA-3-BADMETHOD

[Heath Jones]

Hi Chris

The first thing that popped into my mind was partial nvram failure.
If my understanding of that badmethod error description is correct, then its
talking about the methods you can configure for aaa - radius, local, tacacs
etc..
If you look where that is stored in the config, it is right around the
logins. Also, there might be a side effect of this error that a user's local
credentials won't work as there is no usable aaa policy (ie. no default
behaviour).

It's only one theory though :)


Cheers
Heath


On 4 August 2010 13:07, Chris Lane <clane1875 at gmail.com> wrote:

> All,
>
> Running a C3750 48TS on 12.2(35)SE2 . Used very simple AAA method for
> authentication with radius, 4 lines of AAA.
> Happened to log into router today only to notice that i can't configure
> device, my credentials don't match and i have this in the log
>
> %AAA-3-BADMETHOD
>
> This entry is on AUG 2nd, and the last NVRAM change was done on July29th -
> and it was simple vlan addition.
> The most alarming problem was when i did a SHOW RUN, there were almost 20
> AAA commands that myself or the 29th UPDATED CONFIG did not add.
> On Aug 2nd the log does not show any user access just the above with a
> bunch
> of memory dumps, as it appears. Unfortunately i did not grab the LOG
> itself.
> ugg.
>
> Issue, i figured by rebooting the last NVRAM change on JULY 29th i would
> regain my original config from the 29th and remove these randomly issued
> commands. This is a remote router fyi:
> router did not respond well to reload and did not come back.  Oh and on
> reboot i did NOT save changes to Config preserving July 29th NVRAM change.
>
> Has anyone Seen such wierd oddity?
>
> I have to repeat, the logs do not indicate user Access to the box, which
> the
> box does log, on Aug 2nd, just the above error with 2 full log lines full
> of
> what appears to be a memory dump of some sort.
>
> And lastly Cisco's website shows this for the Above error:
>
> AAA-3-BADMETHOD : Cannot process [chars] method [int]
>
> Explanation    A method list function has encountered a method list that
> was
> unknown or that could not be processed.
>
> Recommended Action    Copy the error message exactly as it appears on the
> console or in the system log, contact your Cisco technical support
> representative, and provide the representative with the gathered
> information.
>
>
>
> Wow, thats helpful  ;-)
>
> Much regards
>
> Chris
> --
> //CL
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