What does the PE router convert the IPv4 prefix to within an MPLS VPN?

What does the PE router convert the IPv4 prefix to within an MPLS VPN?
A . 48-bit route combining the IP and PE router-id
B . VPN-IPv4 prefix combined with the 64-bit route distinguisher
C . eBGP path association between the PE and CE sessions
D . prefix that combines the ASN, PE router-id, and IP prefix

View Answer

Answer: B

Explanation

The IP prefix is a member of the IPv4 address family. After the PE device learns the IP prefix, the PE converts it into a VPN-IPv4 prefix by combining it with an 8-byte route distinguisher (RD). The generated prefix is a member of the VPN-IPv4 address family. It uniquely identifies the customer address, even if the customer site is using globally nonunique (unregistered private) IP addresses.