From: Paul Cosgrove (paul.cosgrove@heanet.ie)
Date: Tue Jan 15 2008 - 19:10:22 ARST
Sounds a little like you may be asking a question you already know the
answer to here. I would expect the summary route to be accepted since
R1 has no active links in area 0. But if you are looking for a definite
answer why not just fire up dynamips and try it out?
Paul.
vignesh sethuraman wrote:
> Hello Experts,
>
> Router R1's S1/0 interface is in Area 0 and is connected to R2 interface s1/0 which is in area 0 and R1's S 1/1 interface is Area 1 which is connected to R3 s 1/1 Area 1and R2 s 1/2 interface is connected to R3 s1/2 which is in Area 1.
>
> R2 has a loopback 2.2.2.0/24 which is in area 0.
>
> R1 (S1/0)-----Area 0-------- (S1/0) R2
> (s1/1) (S1/2)
> ! !
> ! !
> Area 1 Area1
> !-------------(s1/1) R3 (S12)------ -----!
>
> In R1 the network 2.2.2.0 is under Router link states(Area 0) and also under summary link states(Area 1) in the ospf database.
> Normally the path is taken via Area 0 ie direct link between R1 and R2. If the path to that network via Area 0 is down, that is area 0 became discontiguous.
>
> R1 (S1/0)--- Area 0 Down Area 0 -------- (S1/0) R2
> (s1/1) (S1/2)
> ! !
> ! !
> Area 1 Area1
> !-------------------------(s1/1) R3 (S12)-----------------------------!
>
> Now the link between R1 and R2 is via R3 (ie) the path for 2.2.2.0/24 is via R3 ie Area 1.will it include the path via Area 1.If not kindly explain me why.
>
> Thanks,
> Vignesh
>
>
>
>
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