Internet Shared Bandwidth FAQ
Answers to common questions about Internet Shared Bandwidth, including EIP quota management, bandwidth limits, data transfer plans, and alert rules.
How do I increase the number of EIPs associated with an Internet Shared Bandwidth instance?
How do I set the maximum bandwidth for EIPs in an Internet Shared Bandwidth instance?
How do I move an EIP from one Internet Shared Bandwidth instance to another?
What is the difference between Shared data transfer plans and Internet Shared Bandwidth instances?
How do I set up alerts for Internet Shared Bandwidth instances?
How do I query the creator (RAM user UID) of an Internet Shared Bandwidth instance?
Can I aggregate multiple independent bandwidth limits for multiple servers?
How do I prevent abnormal billing for Internet Shared Bandwidth?
How do I increase the number of EIPs associated with an Internet Shared Bandwidth instance?
Each Internet Shared Bandwidth instance supports up to 100 EIPs by default. To increase this quota, use either of the following methods:
Request a quota increase on the Quota Management page in the VPC console.
Request a quota increase in the Quota Center console.
For more information, see Manage Internet Shared Bandwidth quotas.
How do I set the maximum bandwidth for EIPs in an Internet Shared Bandwidth instance?
You can cap the bandwidth of each EIP to prevent a single EIP from consuming all bandwidth in the instance.
Call the ModifyCommonBandwidthPackageIpBandwidth operation to set per-EIP bandwidth limits. Note the following:
This operation applies only to EIPs associated with ECS instances. EIPs associated with SLB instances, NAT gateways, secondary ENIs, or HAVIPs are not supported.
This operation is in public preview. It applies only to EIPs that are already associated with an Internet Shared Bandwidth instance. The feature is available only through the API, not the console.
For more information, see ModifyCommonBandwidthPackageIpBandwidth.
How do I move an EIP from one Internet Shared Bandwidth instance to another?
Disassociate the EIP from its current Internet Shared Bandwidth instance, then associate it with the target instance. For more information, see the following topics:
After the EIP is disassociated, its maximum bandwidth and billing method revert to the original settings.
After you associate the EIP with another Internet Shared Bandwidth instance, data transfer fees may change based on the new bandwidth and billing settings.
What is the difference between Shared data transfer plans and Internet Shared Bandwidth instances?
Shared Data transfer plans and Internet Shared Bandwidth instances differ in the following ways:
Intended users
Shared Data transfer plans are available to all users.
Internet Shared Bandwidth instances target medium and large enterprises.
Features
Shared data transfer plans are prepaid resource packages that reduce per-unit data transfer costs. Off-peak data transfer plans are also available at lower rates.
Internet Shared Bandwidth provides a shared pool of public bandwidth for associated EIPs. It supports multiple billing methods, such as pay-by-bandwidth and pay-by-enhanced-95th-percentile.
How to use
Shared Data transfer plans require no configuration. After purchase, the plan automatically offsets data transfer costs.
Internet Shared Bandwidth instances require setup. After purchase, associate EIPs with the instance so they can share the bandwidth.
How do I set up alerts for Internet Shared Bandwidth instances?
Configure threshold-triggered alert rules in the CloudMonitor console to monitor Internet Shared Bandwidth instance status. For more information, seeCreate a threshold-triggered alert rule.
How do I query the creator (RAM user UID) of an Internet Shared Bandwidth instance?
You can use the ActionTrail console to query operation logs and identify which account created an Internet Shared Bandwidth instance. Perform the following steps:
Log on to the ActionTrail console.
Query operation records and filter by the creation time of the target Internet Shared Bandwidth instance.
Locate the record for the CreateCommonBandwidthPackage API call.
The record shows the UID and username of the account (RAM user or Alibaba Cloud account) that created the instance, along with the exact operation time.
Can I aggregate multiple independent bandwidth limits for multiple servers?
You cannot directly aggregate multiple independent bandwidth limits into a single pool for shared use across servers. However, you can create an Internet Shared Bandwidth instance and add the EIPs of multiple ECS instances in the same region to that instance. This allows multiple servers to share bandwidth from the instance and manage bandwidth resources in a unified way, effectively achieving bandwidth aggregation and multi-server bandwidth sharing.
How do I prevent abnormal billing for Internet Shared Bandwidth?
To prevent abnormal billing caused by program errors or malicious traffic, we recommend the following measures:
Set appropriate bandwidth peaks based on your business needs — Configure the bandwidth peak of your Internet Shared Bandwidth instance to cap the maximum bandwidth the instance can consume. This prevents unexpected charges that result from program errors or malicious access generating excessive traffic. You can adjust the bandwidth peak at any time in the console.
Dynamically adjust bandwidth peaks by using the API — Call the ModifyCommonBandwidthPackageSpec operation to programmatically adjust the bandwidth peak of your instance at any time. You can reduce the bandwidth peak when abnormally high usage is detected and restore it after conditions return to normal.
Configure Cloud Monitor alerts for bandwidth and billing metrics — Set up threshold-triggered alert rules in Cloud Monitor to monitor your Internet Shared Bandwidth instance's bandwidth utilization and billing in real time. When usage exceeds your defined thresholds, you receive notifications so you can respond quickly before unusual traffic leads to high charges. For more information, see How do I set up alerts for Internet Shared Bandwidth instances?