Application Scenarios¶
Binding an EIP to an ECS¶
Scenario
You can bind an EIP to an ECS to enable the ECS to access the Internet.
Related Services
ECS, BMS, or VPC
Figure 1 Binding an EIP to a server¶
Binding an EIP to a NAT Gateway¶
Scenario
After an EIP is bound to a NAT gateway and SNAT and DNAT rules are added, multiple servers (such as ECSs and BMSs) can use the same EIP to access the Internet and provide services accessible from the Internet.
An SNAT rule allows servers in a specific VPC subnet to use the same EIP to access the Internet.
A DNAT rule enables servers in a VPC to provide services accessible from the Internet.
Related Services
NAT Gateway, cloud server (ECS and BMSs), and VPC
Figure 2 EIP used by a NAT gateway¶
Binding an EIP to a Load Balancer¶
Scenario
After you attach an EIP to a load balancer, the load balancer can distribute requests from the Internet to backend servers.
Related Services
ELB, ECS, and VPC
Figure 3 EIP used by a load balancer¶