You can downgrade the public bandwidth of subscription instances.
Prerequisites
An instance can be downgraded only when it meets the following conditions:
- The billing method of the instance is subscription.
- The instance is in the Running or Stopped state.
- The instance has no ongoing downgrade or renewal process.
Background information
A real-time downgrade may result in a refund. The refund amount is calculated based on the following formula: Refund amount = Remaining amount of the configuration fee before the downgrade - Price of the new configurations.
You can use the real-time bandwidth downgrade feature to perform the following operations:
- If the current bandwidth billing method is Pay-By-Bandwidth, you can perform the following operations:
- Lower the fixed bandwidth.
- Change the billing method to Pay-By-Traffic and set the peak bandwidth.
- If the current bandwidth billing method is Pay-By-Traffic, you can change the peak bandwidth. However, you cannot change the billing method
to Pay-By-Bandwidth.
Note If you lower the bandwidth of a VPC-type instance to 0 Mbit/s, its public IP address will be detached.
When you downgrade the bandwidth, the following limits apply:
- Whether the bandwidth of a subscription instance can be downgraded is determined by your ECS instance usage.
- You can downgrade only one subscription instance at a time.
- Each subscription instance can be downgraded on a real-time basis for a maximum of three times. Real-time downgrade operations include instance specifications downgrades, bandwidth configurations downgrades, and the change of the disk billing method from subscription to pay-as-you-go.
- The interval between two real-time downgrade operations must be at least five minutes.
- If a VPC-type instance has an EIP associated, its bandwidth configurations cannot be downgraded.
For more information about how to upgrade the bandwidth of a subscription instance, see Upgrade configurations of Subscription instances.