From: Dezso Csonka (dcsonka@xxxxxxxxx)
Date: Wed Aug 23 2000 - 15:45:06 GMT-3
we found the problem with my college. R5 had a virtual link via isdn to the
backbone as a backup link. Because of this r5 became an ABR and converted
type 7 LSA's to type 5 and tried to inject it to the backbone via the
virtual link (which was down because it was just a backup). In addition r5
sent type 7 LSA to r2 marking not to advertise it since it has been
announced to the backbone via the virtual link. That is why the route in
question appeared on r2 but not got advertised to anywhere else. We removed
the additional area from r5 (downgrading it to a ASBR) and it started
working fine.
Dezs
----- Original Message -----
From: Rogell, Dennis <Dennis_Rogell@milgo.com>
To: 'Dezso Csonka ' <dcsonka@cisco.com>
Sent: Wednesday, August 23, 2000 1:42 AM
Subject: RE: ospf nssa
> on r2 did you put area 3 nssa no summary, and on r5 do you have a default
> route. Why don't you post both configs
>
> -----Original Message-----
> From: Dezso Csonka
> To: ccielab@groupstudy.com
> Sent: 08/22/2000 4:22 PM
> Subject: ospf nssa
>
> Hi,
>
> I have the following scenario:
>
> l---e0-r6
> l
> l area 3
> e1
> l area3 area5
> area0--e0-r3-s0---------s0-r2-s1-------s0-r5
>
> I have 4 routers. r3's e0 is in area0, e1 & s0 in area 3, r6's e0 &
> r2's s0
> is in area3, while r2's s1 and r5's0 are in area5.
> There is a virtual link between r2 & r3 connecting area5 to the
> backbone.
> Area5 is made nssa and on r5 there are some external routes
> redistributed
> from rip to ospf. These routes appear in r2's routing table the
> following
> way:
>
> O N2 192.1.1.0/24 [110/20] via 1.3.1.2
>
> This route does not appear in the other routers routing table. However,
> if i
> do the same thing on r6 the whole thing works. The problem is arond
> somewhere the virtual link, because r6 is in area3 which is directly
> connected to the backbone.
>
> Any idea?
>
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