When you do not need Smart Access Gateway devices added to a CCN instance to communicate with networks (VPCs or VBRs) in the CEN instance, you can detach the CCN instance from the CEN instance.
- Log on to the Smart Access Gateway console.
- In the left-side navigation pane, click CCN.
- Select the area where the target CCN instance belongs, and click Unbind CEN Instance in the Actions column.
- In the displayed dialog box, click OK. After you detach the CEN instance, the CCN instance cannot communicate with resources (VPCs and VBRs) in the CEN instance.