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Cloud Enterprise Network:Limits

Last Updated:Jan 09, 2024

This topic describes the limits on Cloud Enterprise Network (CEN) and how to apply for quota increases.

Limits on CEN instances

Item

Default value

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 value

Adjustable

The maximum forwarding capacity supported by a transit router

100 Gbps

No

The maximum number of CIDR blocks that can be added to a transit router

5

No

Network instance connections

Item

Default value

Adjustable

Virtual private cloud (VPC) connections

The maximum number of VPCs that can be attached to a transit router

1,000

No

The maximum number of transit routers to which a VPC connection can be attached

5

You can use one of the following methods to increase the quota:

The maximum bandwidth supported by a VPC connection

10 Gbps

No

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

No

The maximum number of VPN connections supported by a transit router for equal-cost multipath (ECMP) routing

16

No

Inter-region connections

The maximum number of inter-region connections supported by each pair of transit routers

1

No

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 the regions connected by the inter-region connection are outside the Chinese mainland

100 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-by-data-transfer, and one of the regions connected by the inter-region connection is outside the Chinese mainland and the other is inside the Chinese mainland

100 Mbps

You can use one of the following methods to increase the quota:

Routes

Item

Default value

Adjustable

Route tables of transit routers

The maximum number of route tables supported by a transit router

20

No

Route entries of transit routers

The maximum number of route entries supported by a transit router route table

2,000

No

Route synchronization

The maximum number of VPCs with which a transit router can synchronize routes.

15

No

Aggregate routes

The maximum number of aggregate routes supported by a transit router route table.

20

No

Routing policies

The maximum number of routing policies in the inbound direction that can be created on a transit router

100

No

The maximum number of routing policies in the outbound direction that can be created on a transit router

100

No

Multicast

Item

Default value

Adjustable

The maximum number of multicast domains supported by a transit router

20

No

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 members supported by a multicast group created for a transit router

15

The maximum number of multicast groups that can be created in a multicast domain

20

The maximum bandwidth supported by a multicast group

Note

The bandwidth refers to the sum of the bandwidth that the multicast sources use to transmit packets to the multicast group and the bandwidth that the multicast group uses to transmit packets to the multicast members.

10 Gbps

Traffic scheduling

Item

Default value

Adjustable

The maximum number of traffic classification rules supported by a transit router

500

No

The maximum number of queues that can be created in a quality of service (QoS) policy

64

No

Limits on Basic Edition transit routers

Network instance connections

Item

Default value

Adjustable

The maximum number of network instances that can be attached to a transit router

10

No

The number of Cloud Connect Network (CCN) instances that can be attached to a transit router

1

No

The maximum number of inter-region connections supported by each pair of transit routers

1

No

The maximum number of transit routers to which a VPC can be attached

1

No

Routes

Item

Default value

Adjustable

The maximum number of route tables supported by a transit router

1

No

The maximum number of route entries supported by a transit router

100

No

Routing policies

The maximum number of routing policies in the inbound direction that can be created on a transit router

100

No

The maximum number of routing policies in the outbound direction that can be created on a transit router

100

No