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OSPF and stub-areas

Posted: Thu May 24, 2007 10:38 pm
by complete2006
One general question.

If I define a stub area (Router A (ABR) and normal stub area router B) how can I inject the intra-area routes into the backbone area?

I thought that defining the area-ranges on A but this will not work. I got no route of the connected networks on the "normal" router B in the Backbone Area.


Backbone <-A->StubArea<->B<->Network

Posted: Thu May 24, 2007 11:25 pm
by cmacneill
You need to create Virtual Links, i.e. each router not directly connected to the backbone needs to know about it's backbone conneced partner.

Posted: Thu May 24, 2007 11:43 pm
by tneumann
How does router B know the route to "Network"? Is it directly connected? Or a static route?

--Tom

Re: OSPF and stub-areas

Posted: Thu May 31, 2007 10:26 am
by complete2006
Sorry for delayed answer. I had to reactivate my forum account...

The networks ares direct connected and others are with static routes.

Re: OSPF and stub-areas

Posted: Thu May 31, 2007 10:52 am
by tneumann
The networks ares direct connected and others are with static routes.
A stub area can not announce routes from external (i.e. static, connected) networks
towards the OSPF backbone. You'd need either a normal, full-featured area or at
least a NSSA for that.

--Tom