ANS-C01 · Question #232
A company has a data center in the us-west-1 Region with a 10 Gbps AWS Direct Connect dedicated connection to a Direct Connect gateway. There are two private VIFs from the same data center location…
The correct answer is B. AWS will route all traffic by using VIF 2. In AWS Direct Connect, traffic is routed based on the most specific route. In this scenario, there are two VIFs advertising routes for different portions of the 172.16.0.0/16 network: VIF 1 advertises the 172.16.0.0/16 network. VIF 2 advertises the more specific subnet…
Question
A company has a data center in the us-west-1 Region with a 10 Gbps AWS Direct Connect dedicated connection to a Direct Connect gateway. There are two private VIFs from the same data center location in us-west-1 that are attached to the same Direct Connect gateway. VIF 1 advertises 172.16.0.0/16 with an AS_PATH attribute value of 65000. VIF 2 advertises 172.16.1.0/24 with an AS PATH attribute value of 65000 65000 65000. How will AWS route traffic to the data center for traffic that has a destination address within the 172.16.1.0/24 network range?
Options
- AAWS will route all traffic by using VIF 1.
- BAWS will route all traffic by using VIF 2.
- CAWS will use both VIFs for routing by using a round-robin policy.
- DAWS will use flow control to balance the traffic between the two VIFs.
How the community answered
(30 responses)- A7% (2)
- B83% (25)
- C7% (2)
- D3% (1)
Explanation
In AWS Direct Connect, traffic is routed based on the most specific route. In this scenario, there are two VIFs advertising routes for different portions of the 172.16.0.0/16 network: VIF 1 advertises the 172.16.0.0/16 network. VIF 2 advertises the more specific subnet 172.16.1.0/24 within the 172.16.0.0/16 network. Since VIF 2 advertises a more specific route (172.16.1.0/24), AWS will prefer this route for traffic destined for the 172.16.1.0/24 network.
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