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Answer: Advertise a less specific route from the router that is connected to the 5 Gbps connection.
To ensure that the VPC uses the 5 Gbps hosted connection for routing traffic to the office and fails over to the 2 Gbps connection when necessary, the solution involves manipulating BGP attributes to influence route selection. AWS uses the BGP path selection algorithm, which prefers routes with the shortest AS_PATH. By advertising a less specific route from the router connected to the 5 Gbps connection, it becomes the preferred path due to its broader applicability. In the event of a failure, the more specific route from the 2 Gbps connection will be used, ensuring failover. Therefore, the correct approach is to advertise a less specific route from the router connected to the 5 Gbps connection, making option C the correct choice.
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A company has a 2 Gbps AWS Direct Connect hosted connection from its office to a VPC in the ap-southeast-2 Region. A network engineer adds a 5 Gbps Direct Connect hosted connection from a different Direct Connect location in the same Region. The hosted connections are linked to separate routers at the office, with an iBGP session established between the routers.
The network engineer aims to ensure that the VPC routes traffic to the office primarily through the 5 Gbps hosted connection, with failover to the 2 Gbps hosted connection if the 5 Gbps connection becomes unavailable.
What solution will fulfill these requirements?
A
Configure an outbound BGP policy from the router that is connected to the 2 Gbps connection. Advertise routes with a longer AS_PATH attribute to AWS.
B
Advertise a longer prefix route from the router that is connected to the 2 Gbps connection.
C
Advertise a less specific route from the router that is connected to the 5 Gbps connection.
D
Configure an outbound BGP policy from the router that is connected to the 5 Gbps connection. Advertise routes with a longer AS_PATH attribute to AWS.