From: Derek Small (Fuse) (dwsmall@xxxxxxxxxx)
Date: Tue Apr 18 2000 - 14:00:37 GMT-3
Stub areas are defined such that all routes entering the stub are summarized
by the ABR by default. Normally ABRs to stub areas will only advertise
internal routes from the stub back into the OSPF domain. NSSA (Not So
Stubby Areas) are a special exception. When external routers are learned in
an NSSA, the route(s) are all summarized to a default route by the ABR and
advertised back into the OSPF area. This can be over-ridden with the "no
default-information-originate" command. If you want to see the BGP routes
in the rest of the OSPF domain, try this command.
Thank You
Derek Small
dwsmall@fatkid.com
----- Original Message -----
From: John Garrett <John.Garrett.B@bayer.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, April 18, 2000 12:16 PM
Subject: BGP and NSSA Areas
> Is there some rule abour redistributing BGP into and NSSA? Simple
scenerio:
>
> R1-------R2-------R3
>
> R1 is ospf abr, with area 0 & area 5(nssa) R2 is area 5 nssa with bgp 5
> running between r2 & r3. I cannot get the bgp routes to show up in the
ospf,
> anywhere. I used simple configs, ie, all interfaces on r2 are in ospf,
next hop
> is reachable, redistribute bgp5 subnets.
>
> When I switch to eigrp between r2 and r3, and redistibute that into the
ospf,
> I get the external Nx routes that I am looking for.
>
> Any ideas?
>
> John Garrett
>
>
>
>
>
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