Help Center/ Elastic IP/ User Guide/ Elastic IP/ EIP Overview
Updated on 2024-11-12 GMT+08:00
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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 they must be in the same region.

Figure 1 Connecting to the Internet using an EIP

EIP Quotas

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

If you want to increase your quota, see How Do I Apply for a Higher Quota?
  • Your request for a larger quota will only be approved if your account has valid orders and you are continuously using cloud resources. If you have released resources immediately after subscribing to them multiple times, your request for quota increase will be declined.
  • If you have increased the EIP quota but you have not used the quota for a long time, Huawei Cloud will reduce the quota to the default value.

EIP Advantages

  • Flexibility

    EIPs can be flexibly bound to or unbound from ECSs, BMSs, NAT gateways, load balancers, or virtual IP addresses. The bandwidth can be scaled according to service changes.

  • Flexible billing

    EIPs are available on a pay-per-use (bandwidth usage or amount of traffic is billed) basis. The yearly/monthly billing mode is more preferential.

  • Shared bandwidth

    EIPs can use shared bandwidth to lower bandwidth costs.

  • Immediate use

    EIP binding, unbinding, and bandwidth adjustments take effect immediately.

Notes and Constraints

  • If a yearly/monthly EIP is not renewed after it expires, or if the arrears of a pay-per-use EIP are not paid in time, the EIP may be released and cannot be recovered.
  • An EIP and its bound cloud resource can use different billing modes.

    For example, a yearly/monthly EIP can be bound to a pay-per-use ECS.

  • If the used EIP bandwidth exceeds the purchased size or is attacked (usually by a DDoS attack), the EIP will be blocked but can still be bound or unbound.
  • EIPs cannot be transferred across accounts, which means the EIP of an account cannot be transferred to another account.
  • An EIP can be bound to only one cloud resource, and the EIP and the resource must be in the same region.
  • The EIP remains unchanged:
    • No matter you start or stop the ECS.
    • When you modify its billing mode or supported bandwidth.
Parent topic: Elastic IP