Help Center/ Elastic IP/ User Guide (Ally Region)/ Service Overview/ What Is Elastic IP?
Updated on 2026-01-05 GMT+08:00
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What Is Elastic IP?

Introduction

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

EIPs can only be bound to resources in the same region.

EIP

EIPs can be bound to or unbound from ECSs, 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.

Figure 1 Connecting to the Internet using an EIP

EIP Bandwidth

Bandwidth refers to the maximum amount of data that can be transmitted in a given amount of time (generally one second). A larger bandwidth value indicates a stronger transmission capability. Bandwidth is classified into public bandwidth and private bandwidth.

Public bandwidth is the bandwidth consumed when data is transferred between the cloud platform and the Internet. Public bandwidth is classified into inbound bandwidth and outbound bandwidth. For details about the outbound bandwidth and inbound bandwidth, see Figure 2.
  • The metrics about outbound bandwidth on the Cloud Eye console are Outbound Bandwidth and Outbound Traffic.
  • The metrics about inbound bandwidth on the Cloud Eye console are Inbound Bandwidth and Inbound Traffic.
Figure 2 Inbound bandwidth and outbound bandwidth
Parent topic: Service Overview