Express Connect helps you build high-quality and high-reliability intranet communication between local data centers and VPCs in different regions of Alibaba Cloud. Express Connect has the following key features:
- VPC interconnection
Express Connect supports intranet communication between two VPCs regardless of their regions and accounts. Same-region VPC interconnection is free of charge.
Alibaba Cloud creates a Router Interface on each VRouter of the two VPCs, respectively, to achieve secure, reliable, fast, and convenient communication between the two VPCs. For more information, see VPC interconnection.
- Physical access
You can use a leased line to physically connect your local date center to Alibaba Cloud, and create a VBR and router interfaces to achieve communication between the local data center and a VPC in Alibaba Cloud. For more information, see Physical access.
When using a leased line to connect a local data center to a VPC, you only need to select an access point nearest to the local data center, and do not need to build a physical line between the local data center and the VPC. 其中接入点分为阿里云自有接入点和合作伙伴接入点。
You can obtain information about access points through The map about Express Connect or Leased line access points on the Express Connect console. If there is an access point in the city where the local data center is located, you can directly apply for leased line access to the access point.
If there is no access point in the city where your local data center is located, you can select a nearby access point and establish connection between the local data center and the access point.
For example, a user has a local data center in Beijing and a local data center in Tianjin, respectively, the user can achieve physical access through the following methods:
- Because there is an access point in Beijing, the user only needs to connect the local data center in Beijing to the Alibaba Cloud Beijing access point.
- Because there is no access point in Tianjin, but the local data center is near to the Alibaba Cloud Beijing access point, the user can use a leased line to connect the local data center in Tianjin to the Alibaba Cloud Beijing access point.
Access global resources from one point
By connecting to any one access point, you can connect your resources to Alibaba Cloud VPCs around the globe through the access point.
For example, a user wants to connect a local data center in Beijing to a VPC in Beijing and a VPC in Shenzhen through physical access. The user only need to use a leased line to connect the local data center to the Alibaba Cloud Beijing access point, and create two router interfaces respectively connecting to the two VPCs on the VBR.