Application Scenarios
EIP Application Scenarios
EIPs can be bound to or unbound from ECSs, BMSs, virtual IP addresses, NAT gateways, or load balancers.
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
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 cloud 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, ECS, BMS and VPC
Binding an EIP to a Load Balancer
A high-availability load balancing network can be built with the help of EIP.
To handle a large number of concurrent requests from the Internet, you can deploy multiple ECSs in a VPC and use ELB to distribute requests across these servers to improve service stability and availability.
Scenario
After you bind an EIP to a load balancer, the load balancer can distribute requests from the Internet to backend servers.
Related Services
ELB, ECS, and VPC
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