This topic describes the limits on Cloud Enterprise Network (CEN) and how to apply for quota increases.
Limits on CEN instances
| Item | Default quota | Adjustable |
|---|---|---|
| The maximum number of CEN instances that can be created by each Alibaba Cloud account | 5 | You can use one of the following methods to increase the quota:
|
Limits on Enterprise Edition transit routers
Enterprise Edition transit routers
| Item | Default quota | Adjustable |
|---|---|---|
| The maximum forwarding capacity supported by a transit router | 100 Gbps | Not supported |
| The maximum number of CIDR blocks that can be added to a transit router | 5 | Not supported |
Network instance connections
| Item | Default quota | Adjustable |
|---|---|---|
| Virtual private clouds (VPC) connections | ||
| The maximum number of VPCs that can be attached to a transit router | 200 | You can use one of the following methods to increase the quota:
|
| The maximum number of transit routers to which a VPC connection can be attached | 5 | Not supported |
| The maximum bandwidth supported by a VPC connection | 10 Gbps | Not supported |
| Virtual border router (VBR) connections | ||
| The maximum number of VBRs that can be attached to a transit router | 10 | You can use one of the following methods to increase the quota:
|
| VPN connections | ||
| The maximum number of VPN connections that can be attached to a transit router | 50 | You can use one of the following methods to increase the quota:
|
| The maximum number of transit routers to which an IPsec-VPN connection can be attached | 1 | Not supported |
| The maximum number of VPN connections supported by a transit router for equal-cost multipath (ECMP) routing | 16 | Not supported |
| Inter-region connection | ||
| The maximum number of inter-region connections supported by each pair of transit routers | 1 | Not supported |
| The maximum bandwidth supported by an inter-region connection when the bandwidth allocation mode for the inter-region connection is pay-as-you-go, and the regions connected by the inter-region connection are inside the Chinese mainland | 1000 Mbps | You can use one of the following methods to increase the quota:
|
| The maximum bandwidth supported by an inter-region connection when the bandwidth allocation mode for the inter-region connection is pay-as-you-go, and at least one of the regions connected by the inter-region connection is outside the Chinese mainland | 100 Mbps | You can use one of the following methods to increase the quota:
|
Routes
| Item | Default quota | Adjustable |
|---|---|---|
| Route tables of transit routers | ||
| The maximum number of route tables supported by a transit router | 20 | Not supported |
| Route entries of transit routers | ||
| The maximum number of route entries supported by a transit router route table | 2,000 | Not supported |
| Routing policies | ||
| The maximum number of routing policies in the inbound direction that can be created on a transit router | 100 | Not supported |
| The maximum number of routing policies in the outbound direction that can be created on a transit router | 100 | Not supported |
Multicast
| Item | Default quota | Adjustable |
|---|---|---|
| The maximum number of multicast domains supported by a transit router | 20 | Not supported |
| The maximum number of multicast members supported by a multicast group created for a transit router | 15 | |
| The maximum number of vSwitches that can be associated with a multicast domain created for a transit router | 10 | |
| The maximum number of multicast sources that can be added to a multicast group created for a transit router | 15 | |
| The maximum number of inter-region multicast domains that can be associated with a multicast group created for a transit router | 15 |
Traffic scheduling
| Item | Default quota | Adjustable |
|---|---|---|
| The maximum number of traffic classification rules supported by a transit router | 500 | Not supported |
| The maximum number of queues that can be created in a quality of service (QoS) policy | 3 | Not supported |
Limits on Basic Edition transit routers
Network instance connections
| Item | Default quota | Adjustable |
|---|---|---|
| The maximum number of network instances that can be attached to a transit router | 10 | Not supported |
| The number of Cloud Connect Network (CCN) instances that can be attached to a transit router | 1 | Not supported |
| The maximum number of inter-region connections supported by each pair of transit routers | 1 | Not supported |
| The maximum number of transit routers to which a VPC can be attached | 1 | Not supported |
Routes
| Item | Default quota | Adjustable |
|---|---|---|
| The maximum number of route tables supported by a transit router | 1 | Not supported |
| The maximum number of route entries supported by a transit router | 100 | You can use one of the following methods to increase the quota:
|
| Routing policies | ||
| The maximum number of routing policies in the inbound direction that can be created on a transit router | 100 | Not supported |
| The maximum number of routing policies in the outbound direction that you can create on a transit router | 100 | Not supported |