Google Professional Cloud Network Engineer Question 671
Select 3Google Cloud PlatformYour organization is setting up a hybrid cloud architecture and needs to establish a BGP (Border Gateway Protocol) session between an on-premises data center and Google Cloud using Cloud Router. During configuration, what considerations should you keep in mind to ensure successful connectivity?
- A
Ensure the on-premises router and the Cloud Router are configured with the same ASN (Autonomous System Number).
- B
Cloud Router must be associated with a specific VPC network in Google Cloud.
- C
Cloud Router requires a static route to establish BGP peering.
- D
Ensure that the advertised IP ranges from the on-premises network do not overlap with subnets in the VPC network.
- E
Cloud Router dynamically learns routes without needing manual route configuration.
Show answer and explanation
Correct answers: B, D, E
Explanation
To establish successful BGP peering between an on-premises router and Cloud Router, you must ensure that the ASNs used are unique, the Cloud Router is associated with a specific VPC network, and the IP ranges between the networks do not overlap. Additionally, Cloud Router dynamically learns and propagates routes using BGP, eliminating the need for manual route configuration. These considerations are critical for ensuring seamless connectivity in a hybrid cloud setup.
- A. Incorrect.
Incorrect: Cloud Router and the on-premises router must use different ASNs for BGP peering to work, as each peer in a BGP session requires a unique ASN.
- B. Correct.
Correct: Cloud Router is always associated with a specific VPC network, as it is responsible for dynamically exchanging routes for that network.
- C. Incorrect.
Incorrect: Cloud Router uses BGP for route exchange and does not require static routes for establishing BGP peering.
- D. Correct.
Correct: Overlapping IP ranges between the on-premises network and the VPC network can cause routing conflicts and must be avoided.
- E. Correct.
Correct: One of the key benefits of Cloud Router is its ability to dynamically learn and propagate routes using BGP without requiring manual configuration of routes.