From: Chris Lewis (chrlewiscsco@gmail.com)
Date: Mon Apr 03 2006 - 10:38:31 GMT-3
An ABR that does not touch area 0 is somewhat of a broken design.
Chris
On 4/2/06, xprtofnet <xprtofnet@yahoo.com> wrote:
>
> virtual-link is an interface in area 0. you do not
> need any other interface in area 0 to bring up
> virtual-link. you need virtual-link only if the router
> is an abr, hence requires a interface in area 0--the
> virtual-link.
>
> only a cisco implementation of ospf requires abr to
> touch area 0. the rfc does not require it. hence you
> can pop loopbacks on each abr to make them an area 0
> interface.
>
> m2c
>
> --- Nick Griffin <ngriffin@sio.midco.net> wrote:
>
> > Is it necessary to have one interface defined in
> > area0 before a virtual
> > link will come up? I've seen some scenarios
> > providing solutions that do
> > not include interfaces or loopbacks in area0,
> > however VL's are
> > configured. The only way I have been able to get
> > this to work is to have
> > at least one interface in area0. Thoughts
> > appreciated.
> >
> > TIA,
> >
> > Nick Griffin
> >
> >
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