Your multi-region VPC has had a long-standing HA VPN configured in "region 1" connected to your corporate network. You are planning to add two 10…

For the Dedicated Interconnect to be the primary connection over the HA VPN, you should:

Enable global dynamic routing mode to allow the VPC to distribute routes dynamically across

regions.

Set the BGP priority for the VLAN attachments associated with the Dedicated Interconnect to a lower

base priority (e.g., 100) than the HA VPN’s priority (e.g., 20000) to ensure it is preferred.

Setting up global dynamic routing with adjusted BGP priorities on both Interconnect and VPN will

allow dynamic routing of traffic based on set p

and path attributes, such as MED and

priority levels. This setup ensures the Dedicated Interconnect, with a lower priority value, becomes

the primary path for traffic, while the HA VPN, with a higher priority, serves as a backup.

Reference: Google Cloud - Cloud Interconnect

Reference: Google Cloud - HA VPN Overview