Limits - Global Accelerator - Alibaba Cloud Documentation Center

Before you use an Alibaba Cloud service, we recommend that you familiarize yourself with the considerations and limitations of the service. This topic describes the considerations and limitations of Global Accelerator (GA) instances.

Limits on instance types

The following table describes the limitations of standard GA instances and basic GA instances. 全球加速选型限制

You can select the instance specification and the type of accelerated IP address only when you create a subscription standard GA instance.
Pay-as-you-go GA instances support only the pay-by-data-transfer bandwidth metering method.
If you want to use Anycast elastic IP addresses (Anycast EIPs) as accelerated IP addresses, the GA instances and basic bandwidth plans must meet the following requirements:
- GA instances: You must select subscription standard GA instances whose specifications are Large Ⅰ or higher and whose bandwidth metering methods are pay-by-bandwidth.
- Basic bandwidth plans: You must select the premium bandwidth type and the pay-by-data-transfer metering method.
You can associate only subscription basic bandwidth plans that provide basic or premium bandwidth with basic GA instances that use the pay-by-bandwidth bandwidth metering method.

Note

GA instances whose specifications are Large III or higher are unavailable by default. To use these instances, contact your account manager.
By default, you cannot use Anycast EIPs as accelerated IP addresses. To use Anycast EIPs as accelerated IP addresses, go to the Quota Center console, find the quota named GA supports anycast, and then click Apply in the Actions column. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
By default, pay-as-you-go basic bandwidth plans are unavailable. To use these plans, contact your account manager.

Limits on GA instances

Item	Limit on standard instances	Limit on basic instances	Adjustable
The maximum number of GA instances that can be created in each Alibaba Cloud account	10	Unlimited	You can request a quota increase only for standard GA instances. You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The types of endpoints that can be associated with a GA instance	On Alibaba Cloud: Elastic Compute Service (ECS) instances, elastic network interfaces (ENIs), Classic Load Balancer (CLB) instances, Application Load Balancer (ALB) instances, Network Load Balancer (NLB) instances, Object Storage Service (OSS) buckets, Alibaba Cloud public IP addresses, and vSwitches. Outside Alibaba Cloud: custom IP addresses and custom domain names of origin servers. Note For more information, see Overview of endpoint groups and endpoints.	ENIs, CLB instances, NLB instances, and ECS instances. Note For more information, see Add and manage endpoint groups and endpoints.	N/A
The maximum number of origin probing tasks that can be created for each GA instance	5	N/A	You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
TCP and UDP segmentation by GA	Unsupported	Unsupported	N/A

Limits on acceleration areas

Item	Limit on standard instances	Limit on basic instances	Adjustable
Acceleration areas supported by GA	China North, China South, China East, China Southwest, Asia Pacific, Europe, North America, South America, and Middle East Note You can also specify regions in each acceleration area. For more information, see Acceleration areas and regions for standard GA instances and Acceleration areas and regions for basic GA instances.		N/A
Types of accelerated IP addresses supported by GA	Elastic IP Address (EIP) Anycast EIP Note For more information, see Accelerated IP addresses.	EIP (default)	N/A
The maximum number of accelerated IP addresses that can be added to each GA instance	Determined by the type of accelerated IP address and the billing method of the GA instance: If you select EIP as the type of accelerated IP address: Subscription GA instances: The number of accelerated IP addresses is equal to the number of acceleration regions. GA allocates a separate accelerated IP address to each acceleration region. Pay-as-you-go GA instances: Two accelerated IP addresses can be allocated to each acceleration region. If you select Anycast EIP as the type of accelerated IP address, GA allocates the same accelerated IP address to multiple regions around the world.	20	You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The maximum number of idle accelerated IP addresses of each GA instance	N/A	10	You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The minimum bandwidth that can be allocated to each region in an acceleration area	2 Mbit/s	2 Mbit/s	N/A

Limits on listeners

Item	Limit on standard instances	Limit on basic instances	Adjustable
The maximum number of listeners that can be created for each GA instance	10	N/A	You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The routing types that are supported by listeners	Intelligent routing and custom routing. Note For more information, see Routing types.		N/A
The maximum number of listener ports that can be specified for each listener	Intelligent routing listeners: For each TCP or UDP listener: 30 For each HTTP or HTTPS listener: 1 Custom routing listeners: 65,499		You can request more ports only for intelligent routing listeners that use TCP or UDP. You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The range of ports that are supported by listeners	1–65499		N/A
The maximum number of forwarding rules that are supported by each listener	20		You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The maximum number of forwarding conditions that are supported by each listener	40		You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The maximum number of additional certificates that can be associated with each HTTPS listener	3		You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.

Limits on endpoint groups

Item	Limit on standard instances	Limit on basic instances	Adjustable
The maximum number of endpoint groups that can be added to each GA instance	Determined by the number and types of listeners that you add to a GA instance: For each TCP or UDP listener: two endpoint groups. For each HTTP or HTTPS listener: one endpoint group.	1	You can request more endpoint groups only for TCP or UDP listeners. You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The maximum number of virtual endpoint groups that can be associated with each listener	10	N/A	You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.
The maximum number of endpoints that can be added to each endpoint group	4	200	You can increase quotas for a GA instance in the Quota Center or on the Quota Management page. For more information, see the "Adjust quotas" section of the Manage GA quotas topic.