Constraints

To use a central network, the following resources must have been created:
- Enterprise router: used to build a central network
- Global DC gateway: attached to an enterprise router for allowing on-premises data centers to access the cloud across regions
Policy management
- A central network can only have one policy. If you apply another policy for this central network, the policy that was previously applied will be automatically cancelled.
- In each policy, only one enterprise router can be added for a region. All added enterprise routers can communicate with each other by default.
- A policy that is being applied or cancelled cannot be deleted.
Cross-site connection bandwidth management
- A cross-site connection bandwidth cannot be changed or deleted when it is being created, updated, deleted, frozen, recovering, or unfrozen.
- The total of cross-site connection bandwidths cannot exceed the global connection bandwidth.
- If a cross-site connection bandwidth is deleted, you will still be billed for the global connection bandwidth.