Q21Network Implementation
A company is relocating its on-premises network from its Virginia data center to its New York data center. The AWS Direct Connect connections for both the Virginia and New York data-center locations are associated with the `us-east-1` Region. The company must move a private VIF on an existing Direct Connect hosted connection from Virginia to New York. The company's on-premises network uses this connection to access VPCs through a Direct Connect gateway in `us-east-1`. The company has already requested a new Direct Connect hosted connection from the new data center to the New York Direct Connect location. Which solution satisfies these requirements with the **LEAST** downtime?
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Discussion · 5
B 3
Since we are setting a new connection as a backup route before we disable the old connection, it provide a lowest downtime.
B 2
Option A:Creating a new Direct Connect gateway introduces unnecessary complexity and does not align with the requirement to use the existing gateway.
Option C:Migrating the existing private VIF directly to the new connection during the maintenance window would cause downtime because the VIF would need to be detached and reattached.
Option D:Deleting the existing private VIF before creating a new one would lead to downtime, as there would be no active connection during the transition.
1
B: Create a new private VIF on the new Direct Connect hosted connection. Attach the new private VIF to the existing Direct Connect gateway. Configure BGP routing on the new private VIF as a backup route. Perform the switchover during a maintenance window by shutting down BGP on the existing private VIF. Decommission the existing Direct Connect connection.
1
With the AS_PATH attribute values, it's clear that VIF 2 has a more specific network address and uses the same AS_PATH value as VIF 1, but with an additional path element. This means that when traffic is sent from the Direct Connect gateway with a destination address in the 172.16.1.0/24 network range, AWS will use VIF 2 to route the traffic.
So, the correct answer is indeed B: AWS will route all traffic by using VIF 2.
1
least downtime with backup. So the answer is B