Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 229

What does the MP-BGP OPEN message contain?

Answer options

• A. the version number and the AS number to which the router belongs
• B. IP routing information and the AS number to which the router belongs
• C. NLRI, path attributes, and IP addresses of the sending and receiving routers
• D. MPLS labels and the IP address of the router that receives the message

Correct answer: A

Explanation

The MP-BGP OPEN message specifically contains the version number and the Autonomous System (AS) number of the router, making option A the correct choice. Options B, C, and D refer to different types of information not included in the OPEN message; for instance, IP routing information and NLRI are found in other BGP messages, not the OPEN message.