Alcatel-Lucent NRS II – Frame Relay and ATM Services — Question 2

Which of the following statements are FALSE regarding the VPN-IPv4 address family? (Choose 2)

Answer options

• A. When a PE router receives an IPv4 prefix from its local CE it creates a VPN-IPv4 prefix.
• B. The route distinguisher (RD) is appended to the IPv4 prefix to form a 16 byte VPN-IPv4 prefix.
• C. VPN-IPv4 allows BGP to distinguish multiple routes with the same prefixes originated from distinct customers
• D. VPN-IPv4 addresses are only present within the service provider network.
• E. In VPRN, data traffic is carried in VPN-IPv4 packets.

Correct answer: B, C

Explanation

The correct answers are B and C because the VPN-IPv4 prefix is actually formed by appending the route distinguisher (RD) to the IPv4 prefix, not by creating a 16-byte prefix. Additionally, while VPN-IPv4 does allow for the distinction of routes from different customers, it is not solely focused on that aspect as stated in option C, making it misleading. Options A, D, and E are accurate statements regarding the VPN-IPv4 address family.