OSPF Superbackbone Concept

Hi all,

The OSPF superbackbone concept allows to migrate from the traditional
OSPF concept to MPLS VPN by the use of another backbone, i.e OSPF
superbackbone. Area 0 is no longer a requirement.

I would like to know when is Area 0 a requirement in MPLS VPN. More
specifically, if anybody could explain the statement below.

MPLS Configuration on Cisco IOS, Chapter 5 ,Pg 144 states Area 0 is a
requirement only when the PE router is connected to two different
non-backbone areas belonging to the same OSPF domain on a PE router.

Lejoe

Blogs and organic groups at http://www.ccie.net
Received on Tue Nov 03 2009 - 23:22:50 ART