PEs and OSPF Area 0: The PE/CE link can belong to any area including area 0 for an OSPF domain. If the PE attaches to the CE using a non-zero area, then the PE router acts as an ABR for that area. The MPLS VPN backbone acts as a Super Backbone.
Jan 17, 2020 MPLS VPN OSPF CE-PE Protocol Without Area 0 - Cisco MPLS VPN OSPF CE-PE Protocol Without Area 0. I have two locations that was recently activated for a client using MPLS L3 vpns, the end to end circuit is working fine showing the remote network via bgp and is reachable via ping.I then established an OSPF session on both end of the link with the OSPF – The Traceroute Blog
Basic MPLS VPN Experiment - Huawei Enterprise Support
OSPF as the Provider/Customer Edge Protocol for BGP/MPLS Rosen, et al. Standards Track [Page 4] RFC 4577 OSPF for BGP/MPLS IP VPNs June 2006 - It should be possible to make use of an "OSPF backdoor link" between two sites, even if the two sites are in the same OSPF area and neither of the routers attached to the inter-site backdoor link is an area 0 router. This can also be very useful during a
SonicWall Multiple VPN, how many OSPF Area's : networking
GNS3 Lab Files, System and Networking: MPLS VPN with OSPF