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.
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.
The issue may be that only one direction of traffic is being impacted. So maybe your A end is receiving all the hellos, while the Z end is not. Therefore A still has Z as a neighbor, but Z doesn't have A as a neighbor.
Brian Knoll
Be sure to differentiate between unicast and multicast reachability. Try 'ping
224.0.0.10'.
Stephen Kratzer
You may want to check out BFD for EIGRP,
Regards,
Kevin