This topic describes the feature and performance limitations of Cloud Enterprise Network (CEN) and explains how to request quota increases.
CEN instances
Resource | Default quota | Quota increase |
Number of CEN instances per Alibaba Cloud account | 5 | You can request a quota increase by using one of the following methods:
|
Enterprise Edition transit routers
Enterprise Edition transit router instances
Resource | Default quota | Quota increase |
Number of CIDR blocks per transit router | 5 | Not adjustable |
Network instance connections
Resource | Default quota | Quota increase |
Maximum bandwidth per network instance connection (VPC connection, ECR connection, VPN connection, or VBR connection) per availability zone |
| Not adjustable |
VPC Connection | ||
Number of virtual private cloud (VPC) instances a transit router can connect to | 1,000 | Not adjustable |
Number of transit routers a VPC can connect to | 5 | You can request a quota increase by using one of the following methods:
|
VBR Connection | ||
Number of virtual border router (VBR) instances a transit router can connect to | 32 | Not adjustable |
VPN Connection | ||
Number of VPN connections you can create on a transit router | 50 | You can request a quota increase by using one of the following methods:
|
Number of transit routers an IPsec-VPN connection can connect to | 1 | Not adjustable |
Number of VPN connections that support equal-cost multi-path (ECMP) routing per transit router | 16 | Not adjustable |
Inter-region Connection | ||
Number of inter-region connections between a pair of transit routers | 1 | Not adjustable |
Maximum bandwidth of a Pay-By-Data-Transfer inter-region connection between two regions in the Chinese mainland | 1,000 Mbps | You can request a quota increase by using one of the following methods:
|
Maximum bandwidth of a Pay-By-Data-Transfer inter-region connection between two regions outside the Chinese mainland | 100 Mbps | You can request a quota increase by using one of the following methods:
|
Maximum bandwidth of a Pay-By-Data-Transfer inter-region connection between a region in the Chinese mainland and a region outside the Chinese mainland | 100 Mbps | You can request a quota increase by using one of the following methods:
|
ECR connection | For quotas on Express Connect Router (ECR) resources, see Express Connect quotas. | |
Routing
Resource | Default quota | Quota increase |
Route Table | ||
Number of route tables per transit router | 50 | Not adjustable |
Transit router route entry | ||
Number of route entries per route table of a transit router Important The total number of route entries across all route tables of a transit router instance cannot exceed 40,000. | 10,000 | Not adjustable |
Number of route entries per transit router instance | 40,000 | Not adjustable |
Route Synchronization | ||
Number of VPC instances per transit router on which you can enable route synchronization | 50 | Not adjustable |
Aggregate Route | ||
Number of aggregate routes per route table of a transit router | 20 | Not adjustable |
Route Maps | ||
Number of routing policies for the inbound direction per transit router | 100 | Not adjustable |
Number of routing policies for the outbound direction per transit router | 100 | Not adjustable |
Policy-Based Routing Table | ||
Number of policy tables per Transit Router instance ( | 20 | Contact your account manager to request a quota increase. |
Total number of policy-based routes per TR instance ( | 100 | Contact your account manager to request a quota increase. |
Number of policy tables per Attachment ( | 1 | Not adjustable |
Multicast
Resource | Default quota | Quota increase |
Number of multicast domains per transit router | 20 | Not adjustable |
Number of multicast domains you can associate with a VPC Note The total number of multicast domains associated with all vSwitch instances in a VPC cannot exceed the quota. | 20 | |
Number of static or dynamic (IGMP) multicast sources and members per transit router | 2,000 | You can request a quota increase by using one of the following methods:
You can request an increase to 3,000. To request a quota up to 10,000, contact your account manager. |
Number of static and dynamic (IGMP) multicast members per multicast group on a transit router | 100 | Not adjustable |
Number of vSwitches you can associate with a multicast domain on a transit router | 10 | |
Number of static and dynamic (IGMP) multicast sources per multicast group on a transit router | 100 | |
Number of inter-region multicast members per multicast group on a transit router | 15 | |
Number of multicast groups per multicast domain | 20 (Deprecated) | |
Maximum bandwidth per multicast group Note This is the sum of the bandwidth consumed by traffic from all multicast sources to the multicast group and the bandwidth consumed by traffic from the multicast group to all multicast members. | 10 Gbps |
Traffic scheduling
Resource | Default quota | Quota increase |
Number of traffic classification rules per transit router | 500 | Not adjustable |
Number of queues per traffic scheduling policy | 64 | Not adjustable |
Basic Edition transit routers
Network instance connections
Resource | Default quota | Quota increase |
Total number of VPC and VBR instances you can connect to a transit router | 10 | Not adjustable |
Number of Cloud Connect Network (CCN) instances you can connect to a transit router | 1 | Not adjustable |
Number of inter-region connections between a pair of transit routers | 1 | Not adjustable |
Number of transit routers a VPC can connect to | 1 | Not adjustable |
Routing
Resource | Default quota | Quota increase |
Number of route tables per transit router | 1 | Not adjustable |
Number of route entries per transit router | 100 | Not adjustable |
Route Maps | ||
Number of routing policies for the inbound direction per transit router | 100 | Not adjustable |
Number of routing policies for the outbound direction per transit router | 100 | Not adjustable |