From: Alex (alex.arseniev@gmail.com)
Date: Wed Jul 18 2007 - 14:33:26 ART
Hi there,
RFC4577 might help http://www.ietf.org/rfc/rfc4577.txt
(O) routes might appear as (IA) or (E) on remote CE depending on OSPF
domain-id value. The design is probably taking into consideration the fact
that OSPF uses SPF algorithm for intra-area paths and distance-vector for
inter-area paths so injecting Type 3/Type 5 LSA does not lead to full SPF
recalc.
My 0.02$
Rgds
Alex
----- Original Message -----
From: "Ian Blaney" <ian.blaney@gmail.com>
To: "Mohamed, Liban [NTK]" <Liban.Mohamed@sprint.com>
Cc: "Cisco certification" <ccielab@groupstudy.com>
Sent: Wednesday, July 18, 2007 4:45 PM
Subject: Re: MPLS VPN - OSPF PE-CE
> Mohamed
>
> Sorry you have misunderstood my question.
>
> This is not a real life scenario but just a question in my mind about how
> OSPF works in a MPLS VPN setup. Why does an internal OSPF type 1 (o) on
> one
> site always appear as a type 3 (IA) on another within a VPN. It is
> designed
> this way. My question is really why is it designed this way?
>
> Cheers
> Ian
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