This is from RFC2328:
Backbone routers
A router that has an interface to the backbone area. This
includes all routers that interface to more than one area
(i.e., area border routers). However, backbone routers do
not have to be area border routers.
It is not very explicit, I'll give you that. Apparently it confused the
authores of RFC3509 as well. :)
I wasn't aware of RFC3509. I doubt that R3 on Page 2 of this RFC would ineed
"identify itself as an ABR" if it was running IOS. It is an interesting read
nonetheless.
Thanks,
Zsombor
bergenpeak wrote:
>
> RFC2328 defines this router to be an ABR. However, there are
> some
> issues with this approach. RFC 3509 defines an alternative
> behavior
> for ABRs. In summary, when the router connects to multiple
> areas
> but not to area 0, the router should not operate as an ABR but
> instead should operate as if it was internal to all connected
> areas.
>
> Rajesh Kumar wrote:
> >
> > Hello all,
> >
> > If a router has its interfaces in Area 1 and Area 2 and no
> Area 0, is it
> >
> > still considered to be an ABR OR strictly, one of the
> interfaces has to
> >
> > be in Area 0 to be an ABR?
> >
> > Thanks,
> > Rajesh
>
>
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=72630&t=72624
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