From: Chuck Larrieu (chuck@xxxxxxxxxxxxx)
Date: Thu Mar 01 2001 - 14:22:45 GMT-3
I'm glad to hear I'm not completely crazy.
BTW, I just now completed an exercise where I blew out ospf on my r4, let
the eigrp side settle down. Then reconfigured ospf on the router in
question. Everything is behaving normally.
The only other variable that may or may not have relevance is that the ospf
domain is generally ios 12.1.something and the eigrp domain is generally
11.2.19
All's well that ends well, so they say. I cannot recreate the phenomenon at
this time, no matter what tricks I try.
So I am calling it artifact, filing it under gotcha, and continuing to
practice.
Thanks, everyone
Chuck
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Nodir Nazarov
Sent: Thursday, March 01, 2001 8:44 AM
To: frank wells
Cc: ccielab@groupstudy.com
Subject: Re: route artifact revisited
By the way - I could reproduce Chuck's scenario.
To recap:
R1---R4
| |
R3--R6
R1 - ospf only, R6 - eigrp only. R3 - mutually distributes each other. R4
- runs both protocols, but does not redistribute.
On R4 I got connected router (between R1 and R3) as EIGRP external. Had it
at least for 17 minutes. Checked after 10 minutes - got right one. After a
while - EIGRP external showed up. So it's flapping.
EIGRP - 172.16.0.0
OSPF - 192.168.13.0 (between R1 and R3), 192.168.14.0 (R1 and R4)
Nodir
On Thu, 1 Mar 2001, frank wells wrote:
> What prefixs' are you using on the OSPF and EIGRP sides?
>
>
> >From: "Chuck Larrieu" <chuck@cl.cncdsl.com>
> >Reply-To: "Chuck Larrieu" <chuck@cl.cncdsl.com>
> >To: "CCIE_Lab Groupstudy List" <ccielab@groupstudy.com>
> >Subject: route artifact revisited
> >Date: Wed, 28 Feb 2001 23:12:41 -0800
> >
> >Practicing redistribution for the next couple of days. My strange
behaviour
> >of the evening:
> >
> >Ospf domain --------------EIGRP domain
> >Router_1-----------------------router_4 r4 runs ospf and eigrp but
> >does not redistribute
> >| /
> >Router_3----------Router_6 r3 redistributes both ways, r6 is
> >eigrp
> >only
> >
> >The artifact - a route directly connected to an interface on R1 shows up
on
> >R4 and an eigrp external with a metric of 170. All other ospf routes are
on
> >r4 as they should be, with a metric of 110
> >
> >Several clear ip route * does not correct the situation. I shut off
> >redistribution, do a clear ip ospf proc on R1, verify that the route in
> >question is an ospf route on r4, reconfigure redistribution, and now
> >everything is as it should be. I add redistribution back onto r3. The
route
> >in question remains an ospf route. I check the output of debug ip
routing,
> >and see that the ospf route is replacing the redistribute and now EIGRP
> >route in R4's table.
> >
> >I can derive no good explanation. If I recall how I built the lab
> >correctly,
> >it is true I did not add OSPF to R4 until last, after redistribution was
in
> >place on r3. So the eigrp route would have been in r4's table already.
But
> >then, so were all of the other ospf routes, and when ospf was built, they
> >appeared as ospf routes on r4
> >
> >I'm a bit puzzled by this. And open to a rational explanation.
> >
> >Chuck
> >----------------------
> >I am Locutus, a CCIE Lab Proctor. Xx_Brain_dumps_xX are futile. Your life
> >as
> >it has been is over ( if you hope to pass ) From this time forward, you
> >will
> >study US!
> >( apologies to the folks at Star Trek TNG )
> >
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