You are designing a new network infrastructure for your customer in Google Cloud. Your customer requires a connection between two Google Cloud VPCs that must include a VPN tunnel. You want to follow Google-recommended practices while ensuring maximum availability of the connection. Which VPN configuration should you choose?
The best configuration for ensuring maximum availability following Google-recommended practices is to use Border Gateway Protocol (BGP)-based VPN with HA (High Availability) VPN. This setup provides high availability by using two tunnels that terminate on separate Google Cloud VPN gateways, which ensures continuous connectivity between the two VPCs with minimal downtime. BGP enables dynamic routing, allowing for automatic failover if one VPN gateway or tunnel becomes unavailable. Classic VPN options do not provide the same level of features and reliability as HA VPN.
HA VPN provides high availability by using two tunnels that terminate on two separate Google Cloud VPN gateways. BGP enables dynamic routing between the on-premises network and Google Cloud, allowing for automatic failover in case one VPN gateway or tunnel becomes unavailable. This ensures continuous connectivity between the two VPCs with minimal downtime. Options A, B, and C use Classic VPN, which is not recommended for new deployments as it lacks certain features such as high availability and dynamic routing. Therefore, option D is the most suitable choice for ensuring maximum availability and following Google-recommended practices.
It's D
HA VPN using BGP