Alibaba Cloud sets default quotas on the cloud resources and API operations for each Alibaba Cloud account. This topic describes the quota items and their default values of Cloud Enterprise Network (CEN), as well as whether the quotas are adjustable.
Overview
Quotas are set on a per-region or per-account basis. Quotas are categorized into the following types:
General quotas: the limits on cloud resources that are available to an Alibaba Cloud account.
API rate limits: the limits on API calls that an Alibaba Cloud account can make within a specific period of time. API rate limits are also known as QPS limits.
Privileges: the permissions to use advanced features. Privileges are granted by Alibaba Cloud to an account.
Cloud Enterprise Network (CEN) is subject to general quotas, API rate limits, and privileges. You can apply for increases on some of the quotas. You can view and manage quotas in Alibaba Cloud Quota Center, or in the CEN console. For more information about how to manage quotas, see Manage quotas.
General quotas
The following table describes the general quotas of CEN.
This topic provides the default quota values for the service, and the actual default quota values may be different. The values in the Alibaba Cloud service console are the actual default quotas applied to your Alibaba Cloud account.
You can call the ListProductQuotas API operation to query the information about a quota by quota name or quota ID.
CEN instances
Description | Default value | Adjustable |
Maximum number of CEN instances that each Alibaba Cloud account can have | 5 |
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Enterprise Edition transit routers
Table 1: Enterprise Edition transit routers
Description | Default value | Adjustable |
Maximum number of CIDR blocks that can be added to a transit router | 5 | No |
Table 2: Network instance connections (adjustable quotas)
Description | Default value | Adjustable |
Maximum number of transit routers that can be connected to a virtual private cloud (VPC) | 5 |
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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 in the Chinese mainland | 1,000 Mbit/s |
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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 Mbit/s |
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Maximum bandwidth supported by an inter-region connection when the bandwidth allocation mode for the inter-region connection is pay-as-you-go and one of the regions connected by the inter-region connection is outside the Chinese mainland and the other is in the Chinese mainland | 100 Mbit/s |
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Maximum number of virtual border routers (VBRs) that can be attached to a transit router | 32 | No
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Maximum number of IPsec-VPN connections that can be attached to a transit router | 50 |
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Table 3: Network instance connections (nonadjustable quotas)
Description | Default value | Adjustable |
Maximum bandwidth supported by each VPC connection, Express Connect Router (ECR) connection, VPN connection, or VBR connection | 50 Gbit/s in the China (Hangzhou), China (Shanghai), China (Beijing), China (Shenzhen), and Singapore regions. 10 Gbit/s in other regions. | No |
Maximum number of VPCs that can be associated with each transit router | 1,000 | No
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Maximum number of transit routers to which an IPsec-VPN connection can be attached | 1 | No |
Maximum number of VPN connections supported by a transit router for equal-cost multi-path (ECMP) routing | 16 | No |
Maximum number of inter-region connections supported by each pair of transit routers | 1 | No |
ECR quotas | For more information, see Express Connect quotas. | |
Table 4: Routes
Description | Default value | Adjustable |
Maximum number of route tables supported by a transit router | 20 | No |
Maximum number of routes supported by each transit router route table Important The total number of routes of all route tables of a transit router cannot exceed 40,000. | 10,000 | No
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Maximum number of routes supported by each transit router | 40,000 | No
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Maximum number of VPCs with which a transit router can synchronize routes | 50 | No
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Maximum number of aggregate routes supported by a transit router route table | 20 | No |
Maximum number of routing policies in the inbound direction that can be created on a transit router | 100 | No |
Maximum number of routing policies in the outbound direction that can be created on a transit router | 100 | No |
Table 5: Multicast
Description | Default value | Adjustable |
Maximum number of static or dynamic (IGMP) multicast sources and members supported by each transit router | 2,000 | Yes The upper limit for manual adjustment is 3,000. If you require more, contact your account manager. The maximum is 10,000.
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Maximum number of multicast domains that a transit router can create | 20 | No
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Maximum number of multicast domains that a VPC can associate with Note The total number of multicast domains that all vSwitches in a VPC can associate cannot exceed the quota. | 20 | No
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Maximum number of static or dynamic (IGMP) multicast members in a multicast group created for a transit router | 100 | No
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Maximum number of vSwitches that can be associated with a multicast domain created for a transit router | 10 | No
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Maximum number of static or dynamic (IGMP) multicast sources that can be added to a multicast group created for a transit router | 100 | No
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Maximum number of inter-region multicast members supported by a multicast group created for a transit router | 15 | No
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Maximum number of multicast groups that can be created in a multicast domain | 20 (Closing Down) | No
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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 Gbit/s | No |
Table 6: Traffic scheduling
Description | Default value | Adjustable |
Maximum number of traffic classification rules supported by a transit router | 500 | No |
Maximum number of queues that can be created in a quality of service (QoS) policy | 64 | No |
Basic Edition transit routers
Table 7: Network instance connections
Description | Default value | Adjustable |
Maximum number of network instances that can be attached to a transit router | 10 | No
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Maximum number of Cloud Connect Network (CCN) instances that can be attached to a transit router | 1 | No |
Maximum number of inter-region connections supported by each pair of transit routers | 1 | No |
Maximum number of transit routers to which a VPC can be attached | 1 | No |
Table 8: Routes
Description | Default value | Adjustable |
Maximum number of route tables supported by a transit router | 1 | No |
Maximum number of routes supported by a transit router | 100 | No
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Maximum number of routing policies in the inbound direction that can be created on a transit router | 100 | No |
Maximum number of routing policies in the outbound direction that can be created on a transit router | 100 | No |
API rate limits
The following table describes the API rate limits of CEN.
API | Version | Default value | Description | Adjustable |
CreateCen | 2017-09-12 | 300/60s | Maximum number of times that each Alibaba Cloud account can call the CreateCen operation per minute | No |
CreateTransitRouter | 2017-09-12 | 3/1s | Maximum number of times that each Alibaba Cloud account can call the CreateTransitRouter operation per second | No |
DeleteTransitRouter | 2017-09-12 | 3/1s | Maximum number of times that each Alibaba Cloud account can call the DeleteTransitRouter operation per second | No |
DescribeCens | 2017-09-12 | 350/60s | Maximum number of times that each Alibaba Cloud account can call the DescribeCens operation per minute | No |
ListTransitRouters | 2017-09-12 | 20/1s | Maximum number of times that each Alibaba Cloud account can call the ListTransitRouters operation per second | No |
Privileges
The following table describes the privileges of CEN. When the default value of a privilege is 0, the corresponding advanced feature is unavailable. You must obtain the privilege from Alibaba Cloud before you can use the feature.
Quota name | Quota ID | Description | Default value | Adjustable |
CEN bandwidth package supports purchase of 50Gbps bandwidth limit | cen_max_bandwidth/cen_50G | Allows you to purchase bandwidth plans whose maximum bandwidth value does not exceed 50 Gbit/s. | 0 |