You need to implement several steps to make the IPsec VPN connection effective, and then you can perform full self-configuration of IPsec VPN in the console. An example is given below.
Example
Use an IPsec VPN to establish the connectivity between subnet A (192.168.1.0/24) in your VPC (TomVPC) in City 1 and the subnet (10.0.1.0/24) in your IDC. Assume the public IP address of the VPN gateway in your IDC is 202.108.22.5.
Step Description
The VPN Connections activation flowchart is shown below.
For detailed instructions, please refer to: