Answer-first summary for fast verification
Answer: Use global routing. Set the us-east1 Cloud Router to a base priority of 100, and set the us-west1 Cloud Router to a base priority of 1
To configure high availability with a preferred failover path from us-west1 to us-east1, the Multi-Exit Discriminator (MED) values must be set such that us-west1 has a lower MED to prioritize it for ingress traffic. In Google Cloud, the MED is influenced by the Cloud Router's **base priority**, where a lower base priority results in a lower MED. For the on-premises router to compare MED values across regions, the VPC must use **global routing** to ensure routes are advertised consistently across both regions. Setting us-west1's Cloud Router to a base priority of 1 (lower) and us-east1's to 100 (higher) ensures us-west1 is preferred by default. If us-west1 fails, the on-premises router will use the higher MED path via us-east1. Regional routing is incorrect because it restricts route propagation to individual regions, preventing cross-region MED comparison for the same routes.
Author: LeetQuiz Editorial Team
Ultimate access to all questions.
To configure high availability failover for your VPC with Dedicated Interconnect connections in us-west1 and us-east1, how should you set the multi-exit discriminator (MED) values to ensure ingress traffic from on-premises defaults to us-west1 and fails over to us-east1 if us-west1 is unavailable?
A
Use regional routing. Set the us-east1 Cloud Router to a base priority of 100, and set the us-west1 Cloud Router to a base priority of 1
B
Use global routing. Set the us-east1 Cloud Router to a base priority of 100, and set the us-west1 Cloud Router to a base priority of 1
C
Use regional routing. Set the us-east1 Cloud Router to a base priority of 1000, and set the us-west1 Cloud Router to a base priority of 1
D
Use global routing. Set the us-east1 Cloud Router to a base priority of 1000, and set the us-west1 Cloud Router to a base priority of 1
No comments yet.