[108074] in North American Network Operators' Group
Re: eigrp and managed ethernet
daemon@ATHENA.MIT.EDU (Jeremy_Lunsford@playstation.sony.c)
Tue Sep 23 12:32:17 2008
In-Reply-To: <542140.85408.qm@web30802.mail.mud.yahoo.com>
To: Philip Lavine <source_route@yahoo.com>
From: Jeremy_Lunsford@playstation.sony.com
Date: Tue, 23 Sep 2008 09:32:09 -0700
Cc: nanog <nanog@merit.edu>
Errors-To: nanog-bounces@nanog.org
Are you 100% positive that the link is really not passing any traffic?
Have you looked at interface stats to verify that there are no incoming
packets? I'd suggest running some EIGRP debug commands during the outage
to verify if you are really not getting any packets..
Philip Lavine <source_route@yahoo.com>
09/23/2008 09:25 AM
To
nanog <nanog@merit.edu>
cc
Subject
Re: eigrp and managed ethernet
What is really bizarre is that I am down for minutes not seconds and the
timers never fire. If I don't manually passive the connection eigrp will
for some reason think there is a neighbor even though I am unable to
source ping across the WAN.
----- Original Message ----
From: Matthew Huff <mhuff@ox.com>
To: Philip Lavine <source_route@yahoo.com>; nanog <nanog@merit.edu>
Sent: Tuesday, September 23, 2008 8:59:14 AM
Subject: RE: eigrp and managed ethernet
Correct. Eigrp neighbor connectivity has a short-cut when L2 connectivity
goes down, otherwise it will use the eigrp neighbor hold-down timer. You
can decrease that timer:
interface fa0/0
ip hello-interval eigrp p x
ip hold-time eigrp p y
where p is your eigrp as-number, and x is how often you want the hello (in
seconds) and y is the max hold-down timer. Generally y is = x * 3
http://www.cisco.com/en/US/docs/ios/12_2/iproute/command/reference/1rfeigrp.html
----
Matthew Huff | One Manhattanville Rd
OTA Management LLC | Purchase, NY 10577
www.ox.com | Phone: 914-460-4039
aim: matthewbhuff | Fax: 914-460-4139
-----Original Message-----
From: Philip Lavine [mailto:source_route@yahoo.com]
Sent: Tuesday, September 23, 2008 11:43 AM
To: nanog
Subject: eigrp and managed ethernet
For some reason when I lose layer 3 connectivity between two managed
Ethernet sites EIGRP does not bounce.Is this because the physical
interface does not bounce?
