Click the Exhibit button. Customer A is complaining that CE1 and CE2 cannot form an
OSPF adjacency across your LDP Layer 2 circuit. The physical topology of the network is
CE1-PE1-P-PE2-CE2. PE1’s loopback is 192.168.5.1, P’s loopback is 192.168.6.1, and
PE2’s loopback is 192.168.7.1. Referring to the output in the exhibit, what is the problem?

A.
incorrect PE-CE interface configuration

B.
mismatched virtual circuit ID values

C.
extended LDP neighbor not established

D.
mismatched interface encapsulations