Re: EIGRP Question

Horacio,

If you have access to do a capture on the incoming interface, you'll see the
k-values in the EIGRP hello clear as day

But since we won't have that luxury during the lab, you could grab a cruel
packet dump from a "debug ip packet detail dump" tied to an access list
where x.x.x.x is the source interface of the far side:

access-list 100 permit ip host x.x.x.x host 224.0.0.10
!
debug ip packet detail 100 dump

You'll get something like the following:

07A01740: 0100 5E00000A
07A01750: C2000570 00000800 45C0003C 00000000
07A01760: 0158CD9E 0A010101 E000000A 0205EDC9
07A01770: 00000000 00000000 00000000 00000001
07A01780: 0001000C 01010101 0100000F 00040008
07A01790: 0C040102

Ignore the "07A017XX:" hex.

0100 5E00000A
C2000570 00000800 45C0003C 00000000
0158CD9E 0A010101 E000000A 0205EDC9
00000000 00000000 00000000 00000001
0001000C 01010101 0100000F 00040008
0C040102

Count 16-bytes from the end of the frame. This is where the k-values are
offset. The 5 k-values are each 1-byte in length so grab the next 5-bytes
which will give you:

01010101 01

Now you know this neighbor is advertising the following k-values:

k1=1 k2=1 k3=1 k4=1 k5=1

-Steve

On Thu, Nov 19, 2009 at 12:57 PM, Horacio Gaston Farias <
hfarias_at_iplan.com.ar> wrote:

> Hi people, Im troubleshooting an issue with two EIGRP neighbhors in wich
> you can see with debug eigrp packets : K Value Mismatch.
>
> I dont have access to the remote device, so, I need to know if exists a
> Debug that shows me the matric values configured in the remote device?
>
>
> regards.
>
> Horacio.
>
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Received on Thu Nov 19 2009 - 13:50:55 ART