Hybrid networking

This section will investigate how you can create a hybrid cloud by connecting your on-premises environment to Google. Note that similar mechanisms will allow you to build multi-cloud architectures by connecting your resources in another cloud with Google Cloud.

Cloud Router

When two networking environments are connected, they need a way to inform their peers about their local subnets. Furthermore, route propagation should be automatic, as new subnets can be added or old ones can be deleted at any time. Google Cloud uses the Border Gateway Protocol (BGP) protocol to exchange routing information with on-premises (or another cloud) devices.

Cloud Router is the service that speaks the BGP protocol in Google Cloud. It is a Google-managed, highly available service that advertises routes to VPC subnets via either Interconnect or VPN connection toward an on-premises site (or to other clouds). Cloud Router is a regional resource and belongs to a VPC. It uses a unique...