Creating an Edge Connection

Scenarios

This section describes how to create an edge connection. Edge connections allow subnets from central and edge AZs, and from different edge AZs in VPCs to communicate with each other through an internal network.

Constraints

• An edge connection needs to have a global connection bandwidth bound to enable resources from the central and edge sites, and from different edge sites to communicate with each other.
• If you want to enable resources from the central and edge regions, and from different edge regions to communicate, you need to create edge connections in the central region. You can create edge connections in edge regions based on actual requirements.

  For example, Subnet1 in edge AZ1 and Subnet3 in edge AZ3 are from the same VPC-EG1 but different regions. If you want resources from the two subnets to communicate, you need to create an edge connection in central AZ1, edge AZ1, and edge AZ3, respectively.

• Edge connections can be reused if different VPCs are associated with the same edge gateway.

  For example, an edge gateway is associated with both VPC-EG1 and VPC-EG2, and edge AZ1 and edge AZ5 are both in edge region A. If you need Subnet5 in edge AZ5 to communicate with Centre-Subnet3 in central AZ3, you can directly use the created edge connection-A in edge AZ1 of edge region A. You only need to create an edge connection for the region of the central AZ3 and bind a global connection bandwidth.

  Table 1 Resource configuration examples

  Edge Gateway	VPC	Subnet	AZ	Region	Edge Connection	Global Connection Bandwidth-HomeZones (CN East)
  Edge gateway	VPC-EG1	Subnet1	Edge AZ1	Edge region A	Edge connection A	Global connection bandwidth A
  		Subnet3	Edge AZ3	Edge region B	Edge connection B	Global connection bandwidth B
  		Centre-Subnet1	Central AZ1	Central region A	Edge connection-Central A	Global connection bandwidth-Central A
  	VPC-EG2	Subnet5	Edge AZ5	Edge region A	Edge connection A	Global connection bandwidth A
  		Centre-Subnet3	Central AZ3	Central region B	Edge connection-Central B	Global connection bandwidth-Central B

Procedure

1. Go to the edge gateway list page.
2. Click the edge gateway name.

   The Basic Information tab is displayed.

3. Click the Edge Connections tab, and then click Create Edge Connection.

   The Create Edge Connection dialog box is displayed.

4. Configure parameters shown in Table 2 for the edge connection as prompted.

   Table 2 Parameter descriptions

   Parameter	Description	Example Value
   Name	Mandatory Enter an edge connection name. The name: Can contain 1 to 64 characters. Can contain letters, digits, underscores (_), hyphens (-), and periods (.).	-
   AZ	Mandatory Select an AZ to create an edge connection. Only one edge connection can be created for the AZs in the same network border group. AZs in the same network border group are at the same edge site. You can select any AZ at the same edge site.	-
   Description	Optional Enter a description for the edge connection in the text box as required.	-

5. After the parameters are configured, click OK.

Follow-up Operations

You need bind a global connection bandwidth to each edge connection to enable communications through an internal network. For details, see Binding a Global Connection Bandwidth to an Edge Connection.