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    Cloud Enterprise Network:CEN quotas

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    Cloud Enterprise Network:CEN quotas

    Last Updated:Sep 18, 2023

    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 in 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.

    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 CEN quotas.

    General quotas

    The following table describes the general quotas of CEN.

    Note

    • 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

    Yes

    • Quota name: cen_quota_instances_num.

    • Quota ID: q_6lz142.

    Enterprise Edition transit routers

    Table 1. Enterprise Edition transit routers

    Description

    Default value

    Adjustable

    Maximum forwarding capacity supported by a transit router

    100 Gbit/s

    No

    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 to which a virtual private cloud (VPC) can be attached

    5

    Yes

    • Quota name: cen_quota_attach_per_vpc.

    • Quota ID: q_5bxb4o.

    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 Mbit/s

    Yes

    • Quota name: cen_max_bandwidth_payg_china.

    • Quota ID: cen_max_bandwidth_payg_china

    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

    Yes

    • Quota name: cen_max_bandwidth_payg_oversea.

    • Quota ID: cen_max_bandwidth_payg_oversea.

    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 inside the Chinese mainland

    100 Mbit/s

    Yes

    • Quota name: cen_max_bandwidth_payg_cross_border.

    • Quota ID: cen_max_bandwidth_payg_cross_border.

    Maximum number of virtual border routers (VBRs) that can be attached to a transit router

    10

    Yes

    • Quota name: cen_quota_vbr_attach_per_tr.

    • Quota ID: q_219gf5.

    Maximum number of IPsec-VPN connections that can be attached to a transit router

    50

    Yes

    • Quota name: cen_quota_vpn_attach_per_tr.

    • Quota ID: q_fob3hm.

    Table 3. Network instance connection (Nonadjustable quotas)

    Description

    Default Value

    Adjustable

    Maximum number of VPCs that can be attached to a transit router

    1,000

    No

    • Quota name: cen_quota_vpc_attach_per_tr.

    • Quota ID: q_wo82fu.

    Maximum bandwidth supported by a VPC connection

    10 Gbit/s

    No

    Maximum number of transit routers to which an IPsec-VPN connection can be attached

    1

    No

    Maximum number of IPsec-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

    Table 4. Routes

    Description

    Default Value

    Adjustable

    Maximum number of route tables supported by a transit router

    20

    No

    Maximum number of route entries supported by a transit router route table

    2,000

    No

    Maximum number of VPCs with which a transit router can synchronize routes

    15

    No

    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 multicast domains supported by a transit router

    20

    No

    • Quota name: cen_multicast_domain_per_transitrouter.

    • Quota ID: q_exmc61.

    Maximum number of multicast members supported by a multicast group created for a transit router

    15

    No

    • Quota name: cen_multicast_member_per_group.

    • Quota ID: q_s8gqr5.

    Maximum number of vSwitches that can be associated with a multicast domain created for a transit router

    10

    No

    • Quota name: cen_multicast_vsw_per_domain.

    • Quota ID: q_s1curu.

    Maximum number of multicast sources that can be added to a multicast group created for a transit router

    15

    No

    • Quota name: cen_multicast_source_per_group.

    • Quota ID: q_fw2may.

    Maximum number of inter-region multicast members supported by a multicast group created for a transit router

    15

    No

    • Quota name: cen_multicast_peer_member_per_group.

    • Quota ID: q_s6klby.

    Maximum number of multicast groups that can be created in a multicast domain

    20

    No

    • Quota name: cen_multicast_group_per_domain.

    • Quota ID: q_q8ujuc.

    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

    • Quota name: cen_quota_max_endpoints_num.

    • Quota ID: q_eqcs7x.

    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 route entries supported by a transit router

    100

    No

    • Quota name: cen_quota_max_route_entries_num.

    • Quota ID: q_wugqbw.

    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

    300/60(s)

    Maximum number of times that each Alibaba Cloud account can call the CreateCen operation per minute

    No

    CreateTransitRouter

    2017-09-12

    3/1(s)

    Maximum number of times that each Alibaba Cloud account can call the CreateTransitRouter operation per minute

    No

    DeleteTransitRouter

    2017-09-12

    3/1(s)

    Maximum number of times that each Alibaba Cloud account can call the DeleteTransitRouter operation per minute

    No

    DescribeCens

    2017-09-12

    350/60(s)

    Maximum number of times that each Alibaba Cloud account can call the DescribeCens operation per minute

    No

    ListTransitRouters

    2017-09-12

    20/1(s)

    Maximum number of times that each Alibaba Cloud account can call the ListTransitRouters operation per minute

    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.

    Privilege

    Privilege ID

    Description

    Default Value

    Adjustable

    Purchase bandwidth plans whose maximum bandwidth does not exceed 50 Gbit/s

    cen_max_bandwidth/cen_50G

    Allows you to purchase bandwidth plans whose maximum bandwidth value does not exceed 50 Gbit/s.

    0

    Yes