Re: debug ip routing posted 09/21/2004
Thanks a great deal. I had a feeling the docs weren't telling all there was
to know about this command. All that info you provided is great stuff to
Thanks again, Tim
----- Original Message -----
From: "Marvin Greenlee" <marvingreenlee@xxxxxxxxx>
To: "ccie2be" <ccie2be@xxxxxxxxxx>; "Groupstudy R&S"
Sent: Tuesday, September 21, 2004 12:31 PM
Subject: Re: debug ip routing
> 'Debug IP routing' can be an excellent tool to use for
> checking the stability of a lab topology. It will
> show you if routes are flapping due to distance
> issues. It can also be used with an access-list if
> you want to just check a certain route (or group of
> access-list x permit y.y.y.y
> debug ip routing x
> If you think you have redistribution configured
> properly in a test scenario, turn on debug ip routing
> and then clear your routing table with a 'clear ip
> route *'. If there are flapping routes, you will know
> very quickly.
> If you have a recursive routing issue with a tunnel,
> debug ip routing will show you the route for the
> tunnel destination being overwritten by the route
> learned through the tunnel (as well as the
> administrative distance for both).
> As always, use caution when using debug commands in a
> production environment.
> - Marvin Greenlee, CCIE#12237
> Network Learning Inc
> www.ccbootcamp.com (Cisco Training)
> --- ccie2be <ccie2be@xxxxxxxxxx> wrote:
> > Hi guys,
> > In the documentation for above command, it says this
> > command can used to see
> > what routes rip adds, modifies, or deletes in the
> > route table.
> > It seems to me, this isn't completely true in that
> > it doesn't need to be RIP
> > which is changing the route table.
> > In any case, I'm wondering if this command can be
> > used in all circumstances to
> > see the changes being made to the route table.
> > Thanks, Tim
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