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Cloud Connect

Cloud Connect (CC) allows you to quickly build high-speed, high-quality, and stable networks between Virtual Private Clouds (VPCs) across regions and between VPCs and data centers off the cloud. With CC, you can build a globally connected cloud network with enterprise-class scalability and communication capability.

After creating a cloud connection, you can load network instances in different regions to it to enable communication among those network instances. A network instance can be a VPC you created, a VPC authorized by other users, or a virtual gateway you created for access from your data center. After loading the network instances, you need to configure bandwidth between regions where network instances reside to ensure communication among them.

Figure 1 How CC works

Application Scenarios

Communications among VPCs across regions

CC helps you realize secure and reliable private network communications among VPCs in different regions in addition to improving network topology flexibility. Figure 2 shows the communications among VPCs in different regions. The VPCs can be those of yours or those authorized by other accounts.

Figure 2 Communications among VPCs across regions

Communications between data centers and VPCs in multiple regions

If multiple local data centers need to communicate with VPCs in multiple regions, you can use Direct Connect to connect a data center to a VPC and then load these VPCs, virtual gateways connected to data centers, and other VPCs to a cloud connection to build a wholly connected network. Same to communications among VPCs across regions, VPCs can be those of yours or those authorized by other accounts.

Figure 3 Communications between data centers and VPCs in multiple regions

Basic Concepts

Virtual gateway

A virtual gateway is a resource in Direct Connect, and it functions as a router for a connection to access the cloud. A connection is a dedicated network connection between a local data center and a VPC. To access the cloud, a virtual interface is also required, which is the entry for the data center to access the cloud. A virtual gateway connects a virtual interface to a VPC so that the data center can access the VPC.

Figure 4 How Direct Connect works

Bandwidth package

A bandwidth package provides bandwidth for communications among network instances in different regions. You need to buy a bandwidth package in the following scenarios:

  • Communications among network instances within a geographic region
  • Communications among network instances between geographic regions

Bandwidth packages are not required for interworking between network instances in the same region.

Inter-region bandwidth

An inter-region bandwidth is used for network instances in two regions to communicate with each other. If you divide a bandwidth package into several inter-region bandwidths, the sum of these inter-region bandwidths cannot exceed the size of the bandwidth package.

Resource Quotas

Resource

Quota

Remarks

Maximum number of cloud connections that can be created for each account

6

To increase the quota, submit a service ticket.

Maximum number of regions where network instances can be loaded to a cloud connection

6

To increase the quota, submit a service ticket.

Maximum number of network instances that can be loaded to a cloud connection in each region

6

To increase the quota, submit a service ticket.