Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) — Question 7

A regional MPLS VPN provider operates in two regions and wants to provide MPLS L3VPN service for a customer with two sites in these separate locations. The
VPN provider approaches another organization to provide backbone carrier services so that the provider can connect to these two locations.
Which statement about this scenario is true?

Answer options

• A. When edge routers at different regional sites are connected over the global carrier backbone, MP-eBGP must run between the routers to exchange the customer VPNv4 routes.
• B. When eBGP is used for label exchange using the send-label option, MPLS-BGP forwarding is configured under the global ABC CSC PE-to-CE interface.
• C. When BGP is used for both route and label exchange, the neighbor a.b.c.d send-label command is used under the address-family VPNv4 command mode.
• D. When IGP is used for route exchange and LDP for label exchange, MPLS is enabled only on the VRF interface on the backbone-carrier PE side.

Correct answer: B

Explanation

The correct answer is B because it accurately describes the configuration needed when using eBGP for label exchange within MPLS. Options A, C, and D are incorrect as they either misrepresent the necessary configurations or do not pertain to the specific scenario of using eBGP for label exchange.