Re: eigrp and managed ethernet

[Jeremy_Lunsford () playstation sony com]

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?