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Server Load Balancer:ModifyLoadBalancerInternetSpec

Last Updated:Mar 02, 2026

Modifies the metering method of an Internet-facing Classic Load Balancer (CLB) instance.

Operation description

Description

  • If you modify only the maximum bandwidth of a pay-by-bandwidth CLB instance, the new bandwidth immediately takes effect.

  • If you modify the metering method (for example, switch from pay-by-bandwidth to pay-by-data-transfer), the new metering method and the other changes specified in the operation take effect at 00:00:00 the next day.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

slb:ModifyLoadBalancerInternetSpec

update

*loadbalancer

acs:slb:{#regionId}:{#accountId}:loadbalancer/{#loadbalancerId}

  • slb:tag
  • slb:tag
None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

No

The ID of the region where the CLB instance is deployed.

You can call the DescribeRegions operation to query the most recent region list.

cn-hangzhou

LoadBalancerId

string

Yes

The ID of the CLB instance.

lb-bp1b6c719dfa08ex******

InternetChargeType

string

No

The metering method of the Internet-facing CLB instance. Valid values:

  • paybybandwidth: pay-by-bandwidth

  • paybytraffic: pay-by-data-transfer

paybytraffic

Bandwidth

integer

No

The maximum bandwidth of the Internet-facing CLB instance that uses the pay-by-bandwidth metering method. Unit: Mbit/s.

Valid values: 1 to 5000. The maximum bandwidth varies based on the region where the CLB instance is created.****

Note

You do not need to specify this parameter if you set InternetChargeType to paybytraffic (pay-by-data-transfer).

10

AutoPay

boolean

No

Specifies whether to automatically pay the subscription fee of the Internet-facing CLB instance. Valid values:

  • true: enables automatic payments. This is the default value.

  • false: disables automatic payment. You must complete the payment in Order Center.

false

Response elements

Element

Type

Description

Example

object

OrderId

integer

The order ID of the subscription CLB instance.

20142961978****

RequestId

string

The ID of the request.

CEF72CEB-54B6-4AE8-B225-F876FF7BA984

Examples

Success response

JSON format

{
  "OrderId": 0,
  "RequestId": "CEF72CEB-54B6-4AE8-B225-F876FF7BA984"
}

Error codes

HTTP status code

Error code

Error message

Description

400 OperationFailed.UnpaidBillsExist The account has unpaid bills. Please pay your overdue bill first.
400 Operation.NotAllowed Operation Denied. Unfinished order exists.
400 Instance.ShareSlbNotSupportPay95 Illegal parameter. The share instance not support PayBy95 or PayByOld95.
400 Instance.Pay95RateInvalid Illegal parameter. The rate is illegal.
400 Instance.Pay95BandwidthIllegal Illegal parameter. The bandwidth is illegal.
400 Instance.InternetChargeTypeNotAllowed Illegal parameter. The specified InternetChargeType not allowed.
400 PAYFOR.ACCOUNT_MONEY_VALIDATE_ERROR Your channel partner account does not have sufficient funds, please contact your channel partner to recharge the account.
400 OperationDenied.PayByCLCU The operation is not allowed because the instanceChargeType of loadbalancer is PayByCLCU.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.