Anycast Elastic IP Address (Anycast EIP) is a service that you can use to improve the availability of your Internet connections. Alibaba Cloud provides worldwide access points. You can use Anycast EIP to connect to an access point that is nearest to your location. In addition, you can use the high-quality BGP bandwidth over the global network of Alibaba Cloud. This ensures the quality of your Internet connections.

Anycast EIP architecture 4

An Anycast EIP is a public IP address that you can purchase and own as an independent resource. After you purchase an Anycast EIP, the system allocates a public IP address to the Anycast EIP. This public IP address is available for users in the access area. After you associate the Anycast EIP with a backend server, the system uses the Anycast EIP to route network traffic from the access point that is nearest to your location to Alibaba Cloud. Network traffic is automatically routed to the backend server through the optimal routing path. You do not need to configure routes. This improves user experience when users access the backend server from the Internet.

Configurations

The following table describes the configurations of Anycast EIPs.

Configuration Description
Access Area The area from which you want to access Alibaba Cloud from the Internet.

When users from regions outside mainland China use an Anycast EIP to access Alibaba Cloud from the Internet, the availability of Internet connections is improved.

IP Address The IP address that is used to access the backend server.

After you create an Anycast EIP, the system automatically allocates a public IP address to the Anycast EIP. You can use the Anycast EIP to connect to an access point that is nearest to your location from the Internet. After you are connected to Alibaba Cloud, you can access the backend server with which the Anycast EIP is associated.

Access Point An access point is a portal through which network traffic is routed to Alibaba Cloud. You can connect to Alibaba Cloud through the nearest access point. Access points are deployed on points of presence (PoPs) or in regions of Alibaba Cloud. For more information, see Anycast EIP access points.
Origin Server Region The region where the backend server is deployed.

You can associate an Anycast EIP with a Server Load Balancer (SLB) instance that is deployed in the China (Hong Kong), India (Mumbai), UK (London), Malaysia (Kuala Lumpur), US (Silicon Valley), or Singapore (Singapore) region.

Note You can associate an Anycast EIP with an internal-facing SLB instance that is deployed in a virtual private cloud (VPC).

Anycast EIP access points

You can use an Anycast EIP to connect to Alibaba Cloud through the access points in the following regions.
Area Region
Asia Pacific China (Hong Kong), Singapore (Singapore), India (Mumbai), Thailand (Bangkok), China (Taiwan), Philippines (Manila), Vietnam (Ho Chi Minh), and South Korea (Seoul)
North America US (Silicon Valley)
Europe UK (London) and Russia (Moscow)