Which two statements are correct about a sham link? (Choose two.)
Which two statements are correct about a sham link? (Choose two.)
A sham link is used within an MPLS VPN to ensure OSPF routes are properly advertised between provider edge (PE) routers. The statements correctly describing this are: first, the PEs exchange Type 1 OSPF LSAs instead of Type 3 OSPF LSAs for the L3VPN routes, as this allows the OSPF routes to be treated as if they are within the same area. Second, it creates an OSPF multihop neighborship between two PE routers, facilitating route advertisements across the provider's backbone.
correct