300-415 Question 153
Select 4An organization is deploying Cisco SD-WAN and needs to configure BGP on an edge router to connect to a service provider's network. The service provider requires the enterprise to advertise its local subnets, and the edge router must establish a BGP neighbor relationship with the provider's router. Which of the following steps are required to correctly configure BGP on the Cisco SD-WAN edge router?
- A
Define a BGP local AS number under the BGP configuration.
- B
Configure the BGP neighbor's IP address and remote AS number.
- C
Associate BGP with the OMP process to propagate routes to other SD-WAN sites.
- D
Enable BGP GR (Graceful Restart) to ensure session stability during router reboots.
- E
Redistribute connected routes into BGP to advertise local subnets.
Show answer and explanation
Correct answers: A, B, C, E
Explanation
To configure BGP on a Cisco SD-WAN edge router, key steps include defining the local AS number, specifying the BGP neighbor's IP and remote AS, redistributing local subnets into BGP for advertisement, and ensuring BGP routes are propagated across the SD-WAN fabric through the OMP process. While enabling BGP Graceful Restart may improve session stability, it is not required for establishing basic BGP functionality.
- A. Correct.
This is correct because the local AS number is required to initiate a BGP process on the edge router.
- B. Correct.
This is correct because a BGP neighbor relationship requires the IP address of the neighboring router and its remote AS number.
- C. Correct.
This is correct because in Cisco SD-WAN, BGP routes need to be advertised to other SD-WAN sites using OMP.
- D. Incorrect.
This is incorrect because enabling BGP Graceful Restart is not a mandatory step for establishing basic BGP functionality.
- E. Correct.
This is correct because local subnets need to be redistributed into BGP to ensure they are advertised to the service provider.