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Question

Which of the following statements is correct regarding an MPLS VPN super backbone that connects a customer's OSPF network?

A.	The Area 0 backbone cannot be used on a customer's OSPF network because the backbone area is replaced by the MPLS VPN super backbone.
B.	Only one Area 0 backbone can be used on a customer's OSPF network and must be connected to the MPLS VPN super backbone.
C.	Only one Area 0 backbone can be used on a customer's OSPF network and must not be connected to the MPLS VPN super backbone.
D.	Multiple Area 0 backbones can be used on a customer's OSPF network, but all must be connected to the MPLS VPN super backbone.
E.	Multiple Area 0 backbones can be used on a customer's OSPF network and do not need to be connected to the MPLS VPN super backbone.

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Accepted Answer

Multiple Area 0 backbones can be used on a customer's OSPF network, but all must be connected to the MPLS VPN super backbone.

Accepted Answer

Multiple Area 0 backbones can be used on a customer's Open Shortest Path First (OSPF) network, but all must be connected to the Multiprotocol Label Switching (MPLS) virtual private network (VPN) super backbone. An MPLS VPN super backbone connects multiple sites over a service provider network, becoming either an extension of or a replacement for a customer's OSPF backbone.