Connection planning-Alibaba Gov Cloud-阿里云帮助中心

When you use an Express Connect circuit to connect to the Alibaba Gov Cloud platform, you must plan your connection in advance. This plan should cover the requirements for supported circuit types, bandwidth, and routing protocols.

When you use an Express Connect circuit to connect to the Alibaba Gov Cloud platform, you must plan the following parameters based on your business scenario:

Number of circuits: Plan whether to use one or multiple Express Connect circuits based on your business needs. Using multiple Express Connect circuits provides load balancing and high reliability through redundancy.
Note Alibaba Gov Cloud supports a maximum of four Express Connect circuits to implement equal-cost multi-path (ECMP) routing.
Circuit interface type: Circuit interface types include optical ports and copper Ethernet ports. If you select optical ports, you must consider the compatibility of the optical transceiver modules at both ends, such as transmission distance and device brand.
Note Alibaba Cloud devices support optical ports and copper Ethernet ports that use the Ethernet protocol. By default, optical ports are equipped with 10 km LC 10-gigabit single-mode optical transceiver modules. Other types of modules, such as 10 km LC 10-gigabit multi-mode modules, 10 km LC gigabit single-mode modules, and 10 km LC gigabit multi-mode modules, take two to four weeks to provision. You must provide your own modules for other transmission distances. Alibaba Cloud can store these modules for you.
Bandwidth: Select a bandwidth based on the standards provided by your carrier and your business requirements. Common bandwidths are 10 Mbps, 100 Mbps, 1 Gbps, and 10 Gbps. The available specifications depend on the carrier.
Note Alibaba Cloud supports a maximum bandwidth of 10 Gbps for an Express Connect circuit.
IP address planning: You must plan an IP address for each end of the Express Connect circuit. These two IP addresses are used for communication between your data center and the VPC and must be in the same CIDR block. The IP address on the Alibaba Cloud side serves as the routing gateway from the VPC to your data center. The IP address on the customer side serves as the routing gateway from your data center to the VPC. The IP addresses at the two ends of the circuit must not conflict.
Cost planning: The cost of an Express Connect circuit connection consists of two parts: the circuit fee and the router interface fee. You must plan your connection costs accordingly. For more information, see Billing overview.

You should also consider your requirements for other Alibaba Cloud services. For example, the expected size of your VPC determines the CIDR block that you must assign when you create the VPC.