Overview

You can change the billing mode if it no longer meets your needs. Table 1 lists the changeable ECS billing items.

**Table 1** Changeable VPN billing items
Billing Item	Change Scenario	Reference
VPN gateway	Change the billing mode of a VPN gateway instance from pay-per-use to yearly/monthly to enjoy lower prices. Upgrade a yearly/monthly Enterprise Edition VPN gateway to support access via non-fixed IP addresses. Change the billing mode of a pay-per-use Classic VPN gateway between billed by bandwidth and billed by traffic. Increase or decrease the bandwidth of a pay-per-use Classic VPN gateway billed by bandwidth.	Enterprise Edition VPN Changing the Billing Mode of a Pay-Per-Use VPN Gateway to Yearly/Monthly Changing the Specification of a Yearly/Monthly VPN Gateway Classic VPN Changing a Pay-Per-Use VPN Gateway from Being Billed by Bandwidth to Being Billed by Traffic or the Other Way Around
VPN connection group	Increase or decrease the number of VPN connection groups for a yearly/monthly enterprise VPN gateway (with the specification not being Basic).	Increasing or Decreasing the Connection Group Quota for a Yearly/Monthly VPN Gateway
EIP	Change a yearly/monthly EIP to a pay-per-use EIP billed by bandwidth. The change takes effect when the yearly/monthly subscription ends. Change a pay-per-use EIP billed by bandwidth to a yearly/monthly EIP. Change the billing mode of a pay-per-use EIP between billed by bandwidth and billed by traffic. For details, see Figure 1.	Billing Mode Change Overview of EIPs