From: Nodir Nazarov (nodir@xxxxxxxxxxxx)
Date: Thu Mar 01 2001 - 13:43:45 GMT-3
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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