Changing Dedicated Bandwidth Size of an EIP

Scenarios

No matter which billing mode is used, if your EIP is not added to a shared bandwidth, it uses a dedicated bandwidth. A dedicated bandwidth can control how much data can be transferred using a single EIP.

This section describes how to increase or decrease the bandwidth size. Changing bandwidth size does not change the EIPs.

When you change the bandwidth size, the bandwidth price and effective time depend on the billing mode, which applies to both dedicated and shared bandwidths. For details, see Table 1.

Decreasing bandwidths may cause packet loss.

Table 1 Impact on billing after bandwidth size change

Billing Mode	Billed By	Change	Impact
Yearly/Monthly	Bandwidth	Increase bandwidth	The change will take effect immediately. The increased bandwidth will be billed accordingly.
	Bandwidth	Decrease bandwidth upon renewal	The change will not take effect immediately. You need to select a new bandwidth size and a renewal duration. The change will take effect in the first billing cycle after a successful renewal. The order can be unsubscribed before the bandwidth takes effect. The bandwidth cannot be modified in the first billing cycle.
Pay-per-use	Bandwidth	Increase or decrease the bandwidth	The change will take effect immediately.
	Traffic	Increase or decrease the bandwidth	The change will take effect immediately. The bandwidth size you set is only used to limit the maximum data transfer rate.

Notes and Constraints

• If you renew a yearly/monthly EIP in its current validity period, its bandwidth cannot be modified in this period.
• If an EIP is frozen due to account arrears or for security reasons, its dedicated bandwidth cannot be modified.

Procedure

1. Log in to the management console.
2. Click in the upper left corner and select the desired region and project.
3. Click in the upper left corner and choose Networking > Elastic IP.
4. Locate the row that contains the target EIP in the EIP list, and click More > Modify Bandwidth in the Operation column.
   • If it is a pay-per-use EIP, the Modify Bandwidth page is displayed.
   • If it is a yearly/monthly EIP, select either of the following method to increase or decrease the bandwidth and click Continue.
     • Increase bandwidth
     • Decrease bandwidth
5. Change the bandwidth size as prompted.
   Figure 1 Modifying the bandwidth of a pay-per-use EIP
   
   Figure 2 Modifying the bandwidth of a yearly/monthly EIP
   
   

   You can also change the bandwidth name. If an EIP is billed on a pay-per-use basis, you can change its bandwidth billing option.

6. Click Next.
7. Click Submit.

You can also select multiple EIPs and click Modify Bandwidth above the EIP list to modify bandwidths in batches. Only multiple dedicated bandwidths of pay-per-use EIPs can be modified at a time.