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    Internet Shared Bandwidth:FAQ

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    Internet Shared Bandwidth:FAQ

    Last Updated:Aug 22, 2023

    This topic provides answers to some frequently asked questions about Internet Shared Bandwidth.

    How do I increase the number of elastic IP addresses (EIPs) that can be associated with an Internet Shared Bandwidth?

    By default, you can associate at most 100 EIPs with an Internet Shared Bandwidth. When the quota limit is reached, you can no longer associate EIPs with the Internet Shared Bandwidth. In this case, you can use one of the following methods to increase the quota:

    For more information, see Manage Internet Shared Bandwidth quotas.

    How do I specify the maximum bandwidth of the EIPs that are associated with an Internet Shared Bandwidth?

    To prevent an EIP from exhausting the bandwidth provided by an Internet Shared Bandwidth, you can specify the maximum bandwidth of each EIP that is associated with the Internet Shared Bandwidth.

    You can call the ModifyCommonBandwidthPackageIpBandwidth API operation to specify the maximum bandwidth of an EIP that is associated with an Internet Shared Bandwidth. When you call this operation, take note of the following items:

    • This operation is valid only for EIPs that are associated with Elastic Compute Service (ECS) instances. This operation is invalid for EIPs that are associated with Server Load Balancer (SLB) instances, NAT gateways, secondary elastic network interfaces (ENIs), and high-availability virtual IP addresses (HAVIPs).

    • This operation is in public preview. You can call this operation to set the maximum bandwidth of EIPs only if the EIPs are associated with an Internet Shared Bandwidth. The feature is not supported in the console.

    For more information, see ModifyCommonBandwidthPackageIpBandwidth.

    How do I associate an EIP that is associated with an Internet Shared Bandwidth with another Internet Shared Bandwidth?

    You can disassociate the EIP from the Internet Shared Bandwidth, and then associate the EIP with another Internet Shared Bandwidth. For more information, see the following topics:

    1. Disassociate an EIP from an Internet Shared Bandwidth instance

    2. Associate EIPs with an EIP bandwidth plan

    Important

    • After the EIP is disassociated from the Internet Shared Bandwidth, the maximum bandwidth and the billing method of the EIP are restored to the settings before the EIP is associated with the Internet Shared Bandwidth.

    • After you associate the EIP with another Internet Shared Bandwidth, the Internet data transfer fee of the EIP may change based on the new maximum bandwidth and new billing method of the EIP.

    What are the difference between data transfer plans and Internet Shared Bandwidth instances?

    Data transfer plans and Internet Shared Bandwidth instances are two separate services. They have the following differences:

    • Intended users

      • Data transfer plans are intended for all users.

      • Internet Shared Bandwidth instances are intended for medium and large enterprises.

    • Features

      • Data transfer plans are subscription services. Data transfer plans offer a lower unit price for data transfer.

      • Internet Shared Bandwidth instances are Internet bandwidth resources that can be shared by EIPs associated with the Internet Shared Bandwidth instances.

    • How to use

      • Data transfer plans are easy to use and configuration-free. After you purchase a data transfer plan, the system automatically uses the data transfer plan to offset data transfer.

      • Internet Shared Bandwidth instances are more complex. After you purchase an Internet Shared Bandwidth, you need to associate EIPs with the Internet Shared Bandwidth so that the EIPs can share the bandwidth resources.

    How do I create alert rules for Internet Shared Bandwidth instances?

    You can configure threshold-triggered alert rules for Internet Shared Bandwidth instances in the CloudMonitor console. This helps you monitor the real-time status of your Internet Shared Bandwidth instances to ensure business stability. For more information, see Create a threshold-triggered alert rule.