EIP Overview

EIP

The Elastic IP (EIP) service enables your cloud resources to communicate with the Internet using static public IP addresses and scalable bandwidths. If a resource has an EIP bound, it can directly access the Internet. If a resource only has a private IP address, it cannot directly access the Internet.

EIPs can be bound to or unbound from ECSs, BMSs, virtual IP addresses, NAT gateways, or load balancers.

Each EIP can be bound to only one cloud resource and both should be in the same region.

You can use public NAT gateways to enable ECSs in the VPC to share an EIP to access or be accessed by the Internet. For details, see NAT Gateway User Guide.

Figure 1 Connecting to the Internet using an EIP
Click to enlarge

EIP Quotas

You can log in to the console to query your EIP quotas.

Binding an EIP to an Instance

Figure 2 Process for binding an EIP to an instance

**Table 1** Process for binding an EIP to an instance
No.	Step	Description
1	Assigning an EIP	You can assign an EIP and bind it to cloud resources to allow them to access the Internet.
2	Binding an EIP to an Instance	The procedure for binding an EIP varies depending on the target instance. The EIP and the instance to be bound must be in the same region.