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Cloud Enterprise Network:CreateCenInterRegionTrafficQosPolicy

Last Updated:Oct 26, 2026

Creates a cross-region traffic scheduling policy for an Enterprise Edition transit router. You can invoke the CreateCenInterRegionTrafficQosPolicy operation to optimize and control forward and routing of cross-area network traffic.

Operation description

  • Only inter-region connections of an Enterprise Edition transit router support inter-region traffic QoS policies.

  • The traffic QoS feature applies only to the outbound direction of an Enterprise Edition transit router.

    For example, if you create an inter-region connection between the China (Hangzhou) and China (Qingdao) regions and configure the traffic QoS feature for the transit router in the China (Hangzhou) region, the feature guarantees the bandwidth for various services when traffic flows from the China (Hangzhou) region to the China (Qingdao) region. However, the feature does not guarantee the service bandwidth when traffic flows from the China (Qingdao) region to the China (Hangzhou) region.

  • The CreateCenInterRegionTrafficQosPolicy operation is asynchronous. After you call this operation, the system returns a traffic QoS policy ID, but the policy is not immediately created. The creation task continues in the background. You can call the ListCenInterRegionTrafficQosPolicies operation to query the status of the traffic QoS policy.

    • If the traffic QoS policy is in the Creating state, the policy is being created. In this state, you can only query the policy and cannot perform other operations.

    • If the traffic QoS policy is in the Active state, the policy is created.

Before you begin

Before you call the CreateCenInterRegionTrafficQosPolicy operation, make sure that the following requirements are met:

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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

cen:CreateCenInterRegionTrafficQosPolicy

create

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

ClientToken

string

No

The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must make sure that the value is unique among different requests. The token can contain only ASCII characters and cannot exceed 64 characters in length.

123e4567-e89b-12d3-a456-426655****

DryRun

boolean

No

Specifies whether to only precheck the request. Valid values:

  • true: prechecks the request without creating the traffic QoS policy. The system checks whether required parameters are specified, the request format, and service limits. If the request fails the precheck, the corresponding error is returned. If the request passes the precheck, the DryRunOperation error code is returned.

  • false (default): sends the request. If the request passes the precheck, the traffic QoS policy is created.

false

TransitRouterId

string

Yes

The transit router instance ID, which is used for forward and routing.

tr-8vbuqeo5h5pu3m01d****

TransitRouterAttachmentId

string

Yes

The ID of the inter-region connection.

tr-attach-r6g0m3epjehw57****

TrafficQosPolicyName

string

No

The name of the traffic QoS policy.

The name must be 1 to 128 characters in length, and can be left empty. It cannot start with http:// or https://.

nametest

TrafficQosPolicyDescription

string

No

The description of the traffic QoS policy.

The description must be 1 to 256 characters in length, and can be left empty. It cannot start with http:// or https://.

desctest

BandwidthGuaranteeMode

string

No

The bandwidth guarantee mode. You can specify an absolute bandwidth value or a bandwidth percentage. Valid values:

  • byBandwidth: configures the QoS queue based on an absolute bandwidth value.

  • byBandwidthPercent (default): configures the QoS queue based on a bandwidth percentage.

byBandwidthPercent

TrafficQosQueues

array<object>

No

The information about the queues in the traffic QoS policy.

You can create up to three queues. To create more queues, call the CreateCenInterRegionTrafficQosQueue operation.

object

No

The information about the queue.

QosQueueName

string

No

The name of the queue.

You can create up to three queues in a traffic QoS policy and specify a name for each queue.

The name must be 1 to 128 characters in length, and can be left empty. It cannot start with http:// or https://.

nametest

RemainBandwidthPercent

string

No

The percentage of the inter-region bandwidth that the queue can use.

You can create up to 10 queues in a traffic QoS policy and specify the percentage of the inter-region bandwidth that each queue can use.

For example, if you enter 1, packets that match the queue can use up to 1% of the inter-region bandwidth.

Note

The sum of the inter-region bandwidth percentages of all queues in a traffic QoS policy cannot exceed 100%.

1

Bandwidth

string

No

The absolute value of the inter-region bandwidth that the queue can use. Unit: Mbit/s.

You can create up to 10 queues in a traffic QoS policy and specify the inter-region bandwidth that each queue can use.

For example, if you enter 1, packets that match the queue can use up to 1 Mbit/s of the inter-region bandwidth.

Note

The sum of the absolute values of the inter-region bandwidth allocated to all queues in a traffic QoS policy cannot exceed the total inter-region bandwidth.

1

Dscps

array

No

The DSCP values that match the queue.

You can create up to three queues in a traffic QoS policy. Each queue can match up to 60 DSCP values. Separate multiple DSCP values with commas (,).

integer

No

The DSCP values that match the queue.

You can create up to three queues in a traffic QoS policy. Each queue can match up to 60 DSCP values. Separate multiple DSCP values with commas (,).

5

QosQueueDescription

string

No

The description of the queue.

You can create up to 10 queues in a traffic QoS policy and add a description to each queue.

The description must be 1 to 256 characters in length, and can be left empty. It cannot start with http:// or https://.

desctest

ConsoleDryRun

boolean

No

Specifies whether to only precheck the request. Valid values:

  • true: prechecks the request without creating the inter-region traffic QoS policy. The system checks whether required parameters are specified, the request format, and service limits. If the request fails the precheck, the corresponding error is returned. If the request passes the precheck, the DryRunOperation error code is returned.

  • false (default): sends the request. If the request passes the precheck, the inter-region traffic QoS policy is created.

false

Response elements

Element

Type

Description

Example

object

The response.

TrafficQosPolicyId

string

The ID of the traffic QoS policy.

qos-eczzew0v1kzrb5****

RequestId

string

The request ID.

6DF9A765-BCD2-5C7E-8C32-C35C8A361A39

Examples

Success response

JSON format

{
  "TrafficQosPolicyId": "qos-eczzew0v1kzrb5****",
  "RequestId": "6DF9A765-BCD2-5C7E-8C32-C35C8A361A39"
}

Error codes

HTTP status code

Error code

Error message

Description

400 AssociationExist.TrafficQos The traffic qos with the specified attachment already exists. The error message returned because the specified attachment is already associated with a QoS policy.
400 InvalidTransitRouterId.NotFound The specified TransitRouterId is not found. The error message returned because the specified transit router does not exist.
400 IllegalParam.TransitRouterAttachmentId TransitRouterAttachmentId is illegal. The error message returned because the specified transit router is invalid.
400 InvalidParamSize.TrafficQosQueues The queue size included in the traffic QoS policy exceeds the limit. The queue size included in the traffic scheduling policy exceeds the limit.
400 IllegalParam.BandwidthGuaranteeModeMismatch The BandwidthGuaranteeMode does not match the Bandwidth or RemainBandwidthPercent. The BandwidthGuaranteeMode does not match the Bandwidth or RemainBandwidthPercent.
400 IllegalParam.AttachmentBandwidthExceed The entered bandwidth causes the total QoS guaranteed bandwidth to exceed the cross-region bandwidth allocation value. The entered bandwidth causes the total QoS guaranteed bandwidth to exceed the cross-region bandwidth allocation value.
400 IllegalParam.BandwidthGuaranteeMode The input bandwidth guarantee type is not valid. The input bandwidth guarantee type is not valid.
400 MissingParam.RemainBandwidthPercent RemainBandwidthPercent is missing. RemainBandwidthPercent is missing.
400 MissingParam.Bandwidth The parameter Bandwidth is mandatory. The error message returned because no bandwidth value is specified. You must specify a bandwidth value.
400 IllegalParam.RemainBandwidthPercent The specified RemainBandwidthPercent is invalid. The error message returned because the RemainBandwidthPercent parameter is set to invalid value.
400 IllegalParam.Bandwidth Bandwidth is illegal The error message returned because the specified bandwidth value is invalid.
400 IllegalParam.BandwidthPackageStatus The status of the bandwidth package is incorrect. The status of the bandwidth package is incorrect.
400 IncorrectStatus.TransitRouterInstance The status of TransitRouter is incorrect. The error message returned because the transit router is in an invalid state.
400 IncorrectStatus.TransitRouterAttachment TransitRouterAttachmentId status is invalid. The error message returned because the status of the transit router attachment does not support this operation. Try again later.
400 InvalidParameter Invalid parameter. The error message returned because the parameter is set to an invalid value.
400 Unauthorized The AccessKeyId is unauthorized. The error message returned because you do not have the permissions to perform this operation.
400 MissingParam.TransitRouterId The parameter TransitrouterId is mandatory. The error message returned because the TransitRouterId parameter is not set.
400 MissingParam.TransitRouterAttachmentId The parameter TransitRouterAttachmentId is Missing. The error message returned because the TransitRouterAttachmentId parameter is not set.
400 Forbidden.CDTServiceExpired The CDT service is out of service. The cloud data transfer service has been suspended due for payment. Please renew the service and try again.
400 OperationUnsupported.TransitRouterType The specified TransitRouterType does not support the operation. The error message returned because this operation is not supported by the specified type of transit router.
400 OperationUnsupported.QosPolicyForLowLatencyLinkType QoS Policy is not supported for Low Latency LinkType. QoS Policy is not supported for Low Latency LinkType.
400 InvalidTransitRouterAttachmentId.NotFound TransitRouterAttachmentId is not found. The error message returned because the ID of the network instance does not exist.
400 IncorrectStatus.TransitRouterAttachmentId The resource is not in a valid state for the attachment operation. The error message returned because the operation is not supported when the specified attachment is in an unstable state
400 InvalidOperation.QueueLinkTypeNotEqualsAttachmentLinkType The operation is invalid because the link type of an existing QoS queue does not match the link type of the attachment. The operation is invalid because the link type of an existing QoS queue does not match the link type of the attachment.
400 ParamMismatch.BandwidthGuaranteeModeAndQueueSchedulingMode The parameters BandwidthGuaranteeMode and QueueSchedulingMode are incompatible. The parameters BandwidthGuaranteeMode and QueueSchedulingMode are incompatible.
400 InvalidOperation.NotSupportHierarchicalQoS The operation is invalid because the transit router does not support HierarchicalQoS. The operation is invalid because the transit router does not support HierarchicalQoS.
400 InvalidOperation.QueuesExceeded The operation is invalid because the maximum queue quota for HierarchicalQoS has been exceeded. The operation is invalid because the maximum queue quota for HierarchicalQoS has been exceeded.
400 ParamMismatch.QueueSchedulingModeAndBandwidth The parameters QueueSchedulingMode and Bandwidth are incompatible. The parameters QueueSchedulingMode and Bandwidth are incompatible.
400 IllegalParam.QueueType The parameter QueueType is illegal. The parameter QueueType is illegal.
400 ParamMismatch.QueueTypeAndBandwidthPercent The parameters QueueType and BandwidthPercent are incompatible. The parameters QueueType and BandwidthPercent are incompatible.
400 InvalidOperation.PriorityQueueExceeded The operation is invalid because HierarchicalQoS supports only one priority queue. The operation is invalid because HierarchicalQoS supports only one priority queue.
400 ParamMismatch.QueueSchedulingModeAndQueueType The parameters QueueSchedulingMode and QueueType are incompatible. The parameters QueueSchedulingMode and QueueType are incompatible.
400 ParamMismatch.QueueSchedulingModeAndLinkType The parameters QueueSchedulingMode and LinkType are incompatible. The parameters QueueSchedulingMode and LinkType are incompatible.
400 IllegalParam.QueueSchedulingMode The parameter QueueSchedulingMode is illegal. The parameter QueueSchedulingMode is illegal.
400 InvalidOperation.TransitRouterNotSupportHierarchicalQoS The operation is invalid because the transit router does not support HierarchicalQoS. The operation is invalid because the transit router does not support HierarchicalQoS.
400 InvalidParameter.TransitRouterAttachmentId The specified parameter TransitRouterAttachmentId is invalid. The parameter TransitRouterAttachmentId entered is illegal.
400 InvalidParameter.TransitRouterId The specified parameter TransitRouterId is invalid. The parameter TransitRouterId entered is illegal.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.