Function Overview

EIPs can be billed on a yearly/monthly or pay-per-use basis. The billing options and billing items vary depending on the billing mode.

• A yearly/monthly EIP only can be billed by bandwidth.
• A pay-per-use EIP can be billed by bandwidth, traffic, or shared bandwidth.

Billing items of an EIP billed by bandwidth: bandwidth and EIP

Billing items of an EIP billed by traffic: traffic and EIP

Billing items of an EIP added to a shared bandwidth: shared bandwidth and EIP

The EIP service provides multiple billing modes for you to select. You can change your EIP billing mode during the EIP usage period if necessary.

• From yearly/monthly to pay-per-use
• From pay-per-use to yearly/monthly
• From billing by traffic (pay-per-use) to billing by bandwidth (pay-per-use)
• From billing by bandwidth (pay-per-use) to billing by traffic (pay-per-use)

Note: The billing mode of an EIP billed on a yearly/monthly basis cannot be directly changed to be billed on a pay-per-use basis by traffic.

EIPs support both IPv4 and IPv6. You can assign new IPv6 EIPs or convert existing IPv4 EIPs into IPv6 EIPs.

After the IPv6 EIP function is enabled, you will obtain both an IPv4 EIP and its corresponding IPv6 EIP. External IPv6 addresses can access cloud resources through this IPv6 EIP.

Shared bandwidth allows multiple EIPs to share the same bandwidth. All ECSs, BMSs, and load balancers that have EIPs bound in the same region can share a bandwidth.

When you host a large number of applications on the cloud, if each EIP uses an independent bandwidth, a lot of bandwidths are required, which significantly increases bandwidth costs. If all EIPs share the same bandwidth, you can lower bandwidth cost and easily perform system O&M.

You can assign, modify, delete a shared bandwidth, and add or remove EIPs to or from a shared bandwidth.

Shared data package provides a quota for data usage. Such packages are cost-effective and easy to use. Shared data packages take effect immediately after your purchase. If you have subscribed to pay-per-use EIPs using bandwidth billed by traffic in a region and buy a shared data package in the same region, the EIPs will use the shared data package. After the package quota is used up or the package expires, the EIPs will continue to be billed on a pay-per-use basis.

• Two types of packages are available: dynamic BGP and static BGP. Dynamic BGP data packages will be used by dynamic BGP EIPs, and static BGP data packages will be used by static BGP EIPs.
• Shared data packages can be purchased yearly or monthly. Packages purchased for a year are more cost effective. You can purchase multiple shared data packages. The data package with the shortest validity period will be used first.