The following table describes the limits that apply to Cloud Enterprise Networks (CENs).
|Item||Limit||Quota increase supported?|
|The number of CEN instances that can be created for each account||5||Yes. Open a ticket.|
|The number of networks that can be attached to a CEN instance in each region||10||Yes. Open a ticket to apply for a quota of up to 15 CEN instances.|
|The number of bandwidth packages that you can purchase in either of the interconnected regions in each CEN||1||No.|
|The number of regions in each CEN instance||5||Yes. Open a ticket.|
|Limits on VPCs whose ClassicLink feature is enabled||VPCs cannot use the 10.0.0.0/8 CIDR block.||No.|
|Network instance||No Express Connect can be created for network instances that are added to the CEN.||No.|
|The number of route entries that can be created in each CEN||100||Yes. Open a ticket.|
|Sharing of NAT Gateways through CEN||No||No.|
|Support for cross-region access to cloud services||No||No.|
|Support for cloud services to access network instances in CEN||No||No.|
For a VPC that learns the route entries of a CEN instance:
For a CEN instance that learns the route entries of a VPC:
If a VPC has multiple route tables, the CEN instance only learns route entries in the system route table of the VPC instead of those in the custom route tables of the VPC.