Re: EIGRP Authentication

my ios (12.4(15)T12-adventerprise) shows this being sent/received on the
interface level and does not work with auth on the main on one side and sub
on the other...

using 'debug eigrp packets' i see this failing on the s0/0 on one side and
the s0/0.1 on the other...

what does you config and debugs show?

 --
Garry L. Baker

"With sufficient thrust, pigs fly just fine..." - RFC 1925

On Sat, Apr 16, 2011 at 4:32 AM, <andy_at_cloud9.net> wrote:

> I have a question that I cannot answer seem to understand the reasoning
> behind for so I'm here for some general help.
>
> I was doing a sample lab and I had to configure EIGRP authentication
> between routers running frame-relay. I did what I thought was correct and
> everything worked.
>
> Well let s say that the two routers became neighbor and routes were
> exchanged but here is the part I do not understand.
>
> One of the routers had its IP address on a main serial interface and the
> other had its IP address on a sub-interface point-to-point, an over sight on
> my part I configured EIGRP authentication on the main interface and not the
> sub interface. I did not realize that I had made this mistake until I was
> checking the solution. I'm thinking that maybe it should have not worked
> but it does.
>
> This got me thinking, what is the difference between what is configured on
> the main interface to a sub-interface? Do commands on the main interface
> over ride all sub-interface command where these configuration statements are
> missing?
>
> Has anyone run across this before? Any feedback would be welcome.
>
> Andy
>
>
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Received on Sat Apr 16 2011 - 07:47:34 ART