Cloud Interconnect provides low-latency, high-availability connections that enable you to reliably transfer data between your Google Cloud Virtual Private Cloud (VPC) networks and your other networks. Also, Cloud Interconnect connections provide internal IP address communication, which means internal IP addresses are directly accessible from both networks.
Cloud Interconnect offers the following options for extending your network to include Google Cloud:
Dedicated Interconnect provides a direct physical connection between your on-premises network and the Google network. Partner Interconnect provides connectivity between your on-premises and VPC networks through a supported service provider. Cross-Cloud Interconnect provides a direct physical connection between your network in another cloud and the Google network.
Benefits
Using Cloud Interconnect provides the following benefits:
Traffic between your external network and your VPC network doesn't traverse the public internet. Traffic traverses a dedicated connection or goes through a service provider with a dedicated connection. By bypassing the public internet, your traffic takes fewer hops, so there are fewer points of failure where your traffic might get dropped or disrupted. Your VPC network's internal IP addresses are directly accessible from your on-premises network. You don't need to use a NAT device or VPN tunnel to reach internal IP addresses. For details, see . You can scale your connection capacity to meet your particular requirements. For Dedicated Interconnect, connection capacity is delivered over one or more 10-Gbps or 100-Gbps Ethernet connections, with the following maximum capacities supported per Cloud Interconnect connection: 8 x 10-Gbps connections (80 Gbps total) 2 x 100-Gbps connections (200 Gbps total) For Partner Interconnect, the following connection capacities for each VLAN attachment are supported: 50-Mbps to 50-Gbps VLAN attachments. The maximum supported attachment size is 50 Gbps, but not all sizes might be available, depending on what's offered by your chosen partner in the selected location. You can request 100-Gbps connections at any of the locations listed in . Dedicated Interconnect, Partner Interconnect, , and can all help you optimize egress traffic from your VPC network and reduce your egress costs. Cloud VPN by itself does not reduce egress costs. You can use Cloud Interconnect with Private Google Access for on-premises hosts so that on-premises hosts can use internal IP addresses rather than external IP addresses to reach Google APIs and services. For more information, see in the VPC documentation. You can apply IPsec encryption to your Cloud Interconnect traffic by deploying HA VPN over Cloud Interconnect.
Cloud Interconnect
