From: Nigel Taylor (nigel_taylor@xxxxxxxxxxx)
Date: Sun Apr 14 2002 - 19:12:55 GMT-3
Dennis,
Typically you'll find routing loops in situations where you're
performing mutual distribution between a number of protocols using a
single or multiple points of redistribution. The emphasis here would be
in knowing the basics/fundamentals of your routing protocols like
administrative distance(AD), metrics, timers and updates(DV protocols)
etc.. A route showing up as possibly down does not automatically suggest
a routing loop, but simply an unstable route. Tools like trace and ping
would be more efficient in determing if you have a routing loop. The key
here is spotting the issue(a possible Routing loop) from the requirements
based on your knowledge of various protocols. This way you can
implement/use whatever IOS configuration necessary to perform the
necessary filtering or management of the route information on
redistribution.
HTH
Nigel
>From: Dennis.D.Adekola@britishairways.com >Reply-To:
Dennis.D.Adekola@britishairways.com >To: ccielab@groupstudy.com >Subject:
Routing Loops >Date: Sun, 14 Apr 2002 16:59:14 +0100 > >Hello all, > >I
have been trying to practice how to take care of routing loops >My
problem is , i am not very clear on how to detect you have a loop in
>your network. > >What are the command that would help you >Debug ip
routing ? >Debug ip packet ? >What do i need to look out for in these
debugs ? > >also in the routing table what will tell me. >IGRP saying
"Possibly down" and then okay. >How difficult will it be looking out for
routes that disapper and >reapper periodically in the tables. > >Tried to
check the archives but couldn't find anything concrete > >Imputs are much
appreciated > > >D >
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