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Answer: Advertise both Regional aggregate prefixes. Configure custom BGP communities on the routes advertised toward the data center.
To meet the company's requirements for traffic routing and resilience, the network engineer should configure the transit VIF associations on the Direct Connect gateways to advertise both Regional aggregate prefixes and configure custom BGP communities on the routes advertised toward the data center. This approach ensures that traffic follows the shortest geographical path from source to destination by leveraging the aggregate routes for efficient routing. Additionally, by configuring custom BGP communities, the network can prioritize routes and reroute traffic automatically in the event of any failure, ensuring the network's resilience. This method supports the company's need for traffic between on-premises data centers and AWS to travel across a local Direct Connect connection and for traffic between the US data center and eu-west-2, and between the UK data center and us-east-1, to use the private WAN connection when the Direct Connect connection is available.
Author: LeetQuiz Editorial Team
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How should the network engineer configure the transit VIF associations on the Direct Connect gateways to ensure traffic follows the shortest geographical path, uses local Direct Connect connections for on-premises-to-AWS traffic, leverages the private WAN connection for cross-region traffic when Direct Connect is available, and maintains resilience and automatic rerouting in case of failures in the private WAN or Direct Connect connections?
A
Advertise only the aggregate route for the company's entire AWS environment.
B
Advertise VPC-specific CIDR prefixes from only the local Region. Additionally, advertise the aggregate route for the company’s entire AWS environment.
C
Advertise all the specific VPC CIDR blocks from both Regions.
D
Advertise both Regional aggregate prefixes. Configure custom BGP communities on the routes advertised toward the data center.
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