This topic describes how to delete a secondary IPv4 CIDR block of a Virtual Private Cloud (VPC) network. You cannot delete the primary IPv4 CIDR block of a VPC network.


You have deleted the VSwitch that is configured with the target secondary IPv4 CIDR block. For more information, see Delete a VSwitch.


  1. Log on to the VPC console.
  2. Select the region where your VPC network is deployed.
  3. On the VPCs page, find the target VPC network, and click Manage in the Actions column.
  4. On the VPC Details page, click the CIDRs tab.
  5. Find the target secondary IPv4 CIDR block, and then click Delete in the Actions column.
  6. In the dialog box that appears, click OK.