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Cloud Enterprise Network:UpdateTransitRouterVbrAttachmentAttribute

Last Updated:Aug 12, 2026

Modifies the name, description, and automatic route forwarding settings of a virtual border router (VBR) connection on an Enterprise Edition transit router.

Operation description

UpdateTransitRouterVbrAttachmentAttribute is an asynchronous operation. After you send a request, the system returns a RequestId but the VBR connection is not yet modified. The modification task continues to run in the background. You can call ListTransitRouterVbrAttachments to query the status of the VBR connection.

  • If the VBR connection is in the Modifying state, the VBR connection is being modified. In this state, you can only query the VBR connection but cannot perform other operations.

  • If the VBR connection is in the Attached state, the VBR connection is modified.

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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:UpdateTransitRouterVbrAttachmentAttribute

update

*TransitRouterVbrAttachment

acs:cen:*:{#accountId}:centransitrouterattachment/{#centransitrouterattachmentId}

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 token, but you must make sure that the token is unique among different requests. The client token can contain only ASCII characters.

Note

If you do not specify this parameter, the system automatically uses the RequestId as the ClientToken. The RequestId of each API request is different.

02fb3da4-130e-11e9-8e44-001****

TransitRouterAttachmentId

string

Yes

The ID of the VBR connection.

tr-attach-oyf70wfuorwx87****

TransitRouterAttachmentName

string

No

The new name of the VBR connection.

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

testname

TransitRouterAttachmentDescription

string

No

The new description of the VBR connection.

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

testdesc

AutoPublishRouteEnabled

boolean

No

Specifies whether to allow the Enterprise Edition transit router to automatically forward routing entries to the VBR instance. Valid values:

  • true: allowed.

  • false: not allowed.

true

DryRun

boolean

No

Specifies whether to perform a dry run, including permission and instance status verification. Valid values:

  • false (default): sends a normal request. If the request passes the check, the name and description of the VBR connection are modified.

  • true: sends a check request. Only the check is performed. If the check passes, the error code DryRunOperation is returned. If the check fails, the corresponding error is returned.

false

OrderType

string

No

The payer of the network instance. Valid values:

  • PayByCenOwner: the connection fee and data transfer fee of the VBR instance are paid by the account to which the transit router instance belongs.

  • PayByResourceOwner: the connection fee and data transfer fee of the VBR instance are paid by the account to which the VBR instance belongs.

Valid values:

  • PayByResourceOwner :

    The account to which the network instance belongs pays the fees.

  • PayByCenOwner :

    The account to which the Cloud Enterprise Network (CEN) instance belongs pays the fees.

PayByCenOwner

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

91B36DC3-FF8A-45C3-AC1E-456B1789136D

Examples

Success response

JSON format

{
  "RequestId": "91B36DC3-FF8A-45C3-AC1E-456B1789136D"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidTransitRouterAttachmentId.NotFound TransitRouterAttachmentId is not found. The error message returned because the ID of the network instance does not exist.
400 IncorrectStatus.TransitRouterAttachment The status of TransitRouterAttachment is incorrect. 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 InvalidParameter.OrderType The specified parameter OrderType is invalid. The specified parameter OrderType is invalid.
400 InvalidOperation.OrderTypeMustMatchGrantCrossAccount The OrderType must be the same as the OrderType in the grant cross-account record. The OrderType must be the same as the OrderType in the grant cross-account record.
400 OperationFailed.GrantCrossAccountNotExist Cross-account authorization does not exist. Cross-account authorization does not exist.
400 OperationNotPermitted.AttachmentManagedByCloudService The specified Attachment managed by cloud service can only be deleted through cloud service.
400 InvalidParameter.CenBandwidthPackageId The specified parameter CenBandwidthPackageId is invalid. The parameter CenBandwidthPackageId entered is illegal.
400 InvalidParameter.TransitRouterAttachmentId The specified parameter TransitRouterAttachmentId is invalid.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.