CCN can interconnect a VPC with another VPC or a local IDC. To use CCN access, you must establish cross-VPC and VPC-IDC interconnections through CCN in advance.
In this scenario, you have used CCN to interconnect the three networks of VPC-Guangzhou, VPC-Chengdu, and VPC-Shanghai, have a self-built database in Guangzhou, and plan to migrate the data in the source database in Guangzhou to the target database in Nanjing. VPC-Chengdu is selected as the Accessed VPC.
When selecting CCN access, you need to connect the source database to the source of the DTS migration/sync linkage over CCN as follows: source database > accessed VPC > source of the migration/sync linkage, as shown in orange below.
The accessed VPC and the source of the migration/sync linkage are interconnected as follows in the entire DTS task:
The source of the migration/sync linkage is the network in the region of the source database selected during the task purchase, as shown below:
The region of the source database selected during task purchase must be the same as the region of the accessed VPC; otherwise, the networks cannot be interconnected, and DTS will change the former to the latter.
Accessed VPC: The accessed VPC refers to the VPC in CCN over which the migration/sync linkage is connected. It can be configured when you set the source and target databases as shown below:
The accessed VPC and the VPC of the source database are interconnected over CCN.
Establish interconnections as instructed in Connecting Network Instances Under the Same Account.
CCN only provides bandwidth below 10 Kbps between all regions free of charge. However, DTS requires a higher bandwidth. Therefore, bandwidth configuration in the link is required.
|Host Address||IP address of the source database server.||172.16.0.0|
|Port||Port used by the source database. Below are the default ports for common databases (if they are modified, enter the actual ports):
|VPC-based CCN Instance||CCN instance name.||ccn6-xxxx7d|
|Accessed VPC||The accessed VPC refers to the VPC in CCN over which the migration/sync linkage is connected. You need to select a CCN-associated VPC other than the VPC where the source database resides.
For example, if the database in Guangzhou region is selected as the source database, you should select VPC-Chengdu or VPC-Shanghai as the accessed VPC. Here, Chengdu-VPC is selected.
|Subnet||Name of the subnet of the selected VPC.
If you cannot pull the subnet, there may be a problem with your account. The account of the accessed VPC must be the same as the migration account.
For example, to migrate a database under account A to account B, you should use account B to create a task. Therefore, the accessed VPC must be under account B.
|Region of Accessed VPC||The region of the source database selected during task purchase must be the same as the region of the accessed VPC; otherwise, DTS will change the former to the latter.||Chengdu|