Showing posts with label OSPF Sham-Links. Show all posts
Showing posts with label OSPF Sham-Links. Show all posts

What is OSPF Sham Links? how to configure OSPF Sham Links?

Internetworks


OSPF Sham Links are required when we try to use a backdoor link between two CE routers in MPLS VPN PE CE scenarios.





















What is OSPF sham link ?
OSPF Sham links is a logical inter-area link carried by the super backbone. A Sham links is required only between two VPN sites that belong to the same area and have a backdoor link for backup purposes. OSPF adjacency is established across the sham link.