ANS-C01 · Question #303
A company operates in the us-east-1 Region and the us-west-1 Region. The company is designing a solution to connect an on-premises data center to the company's AWS environment in us-east-1. The…
The correct answer is D. Use local preference BGP community tags to apply the 7224:9300 local preference BGP. To control inbound traffic from AWS to the on-premises data center, local preference BGP community tags are used with a Direct Connect gateway. AWS uses the following tags: 7224:9300 sets higher local preference (preferred route). 7224:9100 sets lower local preference (less…
Question
A company operates in the us-east-1 Region and the us-west-1 Region. The company is designing a solution to connect an on-premises data center to the company's AWS environment in us-east-1. The solution uses two AWS Direct Connect connections. Traffic from us-west-1 to the data center needs to traverse the Direct Connect connections. A network engineer needs to set up active-passive functionality across the two Direct Connect connections by using a Direct Connect gateway to influence inbound traffic from VPCs that are in us- west-1 to the data center. Which solution will meet these requirements?
Options
- AAt the data center, set the local preference for the primary connection to be higher than the local
- BUse AS path prepending to set the AS path on the primary connection to be longer than the AS
- CUse local preference BGP community tags to apply the 7224:7300 local preference BGP
- DUse local preference BGP community tags to apply the 7224:9300 local preference BGP
How the community answered
(30 responses)- A20% (6)
- B10% (3)
- C3% (1)
- D67% (20)
Explanation
To control inbound traffic from AWS to the on-premises data center, local preference BGP community tags are used with a Direct Connect gateway. AWS uses the following tags: 7224:9300 sets higher local preference (preferred route). 7224:9100 sets lower local preference (less preferred). Applying 7224:9300 to the primary connection and 7224:9100 to the secondary connection ensures active-passive routing behavior for inbound traffic from AWS VPCs.
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