As shown in the figure, MPLS/BGP IPVPN is deployed in the network, and the MP-BGP neighbor relationship is established between PE1 and PE2 through the Loopback0 interface. After the configuration is complete, it is found that CE1 and CE2 cannot learn routes from each other. Use the command on PE2 Looking at the neighbor information as shown, what is the most likely cause of the problem?

As shown in the figure, MPLS/BGP IPVPN is deployed in the network, and the MP-BGP neighbor relationship is established between PE1 and PE2 through the Loopback0 interface. After the configuration is complete, it is found that CE1 and CE2 cannot learn routes from each other. Use the command on PE2 Looking at the neighbor information as shown, what is the most likely cause of the problem?

A . The VPN instance parameters on PE1 or PE2 are incorrectly configured
B. PE1 and PE2 do not have bell neighbors enabled in the BGP-VPN4 unicast address family view
C. The LSP tunnel between PE1 and PE2 is not established
D. Misconfiguration of routing protocols between PE1 or PE2 and their respective CEs

View Answer

Answer: B