Functions

EIP Functions

EIP provides various functions for you to flexibly configure services and build diversified networks. For details, see Table 1.

Basic functions: EIP and IPv6 EIP
Centralized management: EIP pool
Resource packages: shared data packages, shared bandwidths

**Table 1** EIP functions
Function	Description	Reference
EIP	The EIP service enables your cloud resources to communicate with the Internet using static public IP addresses and scalable bandwidths. You can assign EIPs, bind them to or unbind them from cloud resources, release EIPs, modify EIP bandwidth, and upgrade static BGP EIPs to dynamic BGP EIPs.	Assigning an EIP
IPv6 EIP	Both IPv4 and IPv6 EIPs are available. You can assign an IPv6 EIP or map an existing IPv4 EIP to an IPv6 EIP. 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.	IPv6 EIP Overview
EIP Pool	An EIP pool helps you manage a large number of EIPs and assigns EIPs with dynamic BGP routing, ensuring network stability and optimal user experience. You can purchase and modify EIP pools.	EIP Pool Overview
Shared Bandwidth	All ECSs, BMSs, and load balancers can share the same bandwidth if they reside in the same region and have EIPs bound. You can assign, modify, delete a shared bandwidth, add EIPs to a shared bandwidth, and remove EIPs from a shared bandwidth.	Shared Bandwidth Overview
Shared Data Package	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 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.	Shared Data Package Overview

Global EIP Functions

Global EIP provides various functions for you to flexibly configure services and build diversified networks. For details, see Table 2.

Basic functions: global EIPs and global internet gateways
Bandwidth features: global internet bandwidths and global connection bandwidths

**Table 2** Global EIP functions
Function	Description	Reference
Global EIP	A global EIP can be bound to a global connection bandwidth for private communication and to a global internet bandwidth for Internet access. You can specify a global region and a global EIP pool to assign a global EIP, and bind a global EIP to an instance in any region on the cloud. To enable an ECS to communicate with the Internet through a global EIP, you also need to bind a global internet gateway to the global EIP.	Global EIP Overview
Global Internet Gateways	After a global EIP is bound to an ECS, a global internet gateway is required to connect the VPC of the ECS to the global EIP so that the ECS can access the Internet through the global EIP.	Global Internet Gateway Overview
Global Connection Bandwidths	A global connection bandwidth is used by instances to allow private communication over cloud backbone networks.	Global Connection Bandwidth Overview
Global Internet Bandwidths	Global internet bandwidths have to work together with global EIPs to allow instances for Internet access. A global internet bandwidth can be shared by one or more global EIPs at the same time, improving bandwidth utilization.	Global Internet Bandwidth Overview