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Cloud Enterprise Network:UpdateTransitRouterVpcAttachmentAttribute

Last Updated:Jun 03, 2026

Modifies the name and description of a VPC connection on an Enterprise Edition transit router and to control automatic route advertising to the VPC.

Operation description

UpdateTransitRouterVpcAttachmentAttribute is an asynchronous operation. After you send a request, the system returns a RequestId and completes the modification in the background. To query the status of the VPC connection, call ListTransitRouterVpcAttachments.

  • If a VPC connection is in the Modifying state, you can only query it.

  • If a VPC connection is in the Attached state, the modification is complete.

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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:UpdateTransitRouterVpcAttachmentAttribute

update

*TransitRouterVpcAttachment

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 generate the token from your client, 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 of the request as the ClientToken. The RequestId may be different for each request.

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

TransitRouterAttachmentId

string

Yes

The ID of the VPC connection.

tr-attach-nls9fzkfat8934****

TransitRouterAttachmentName

string

No

The new name of the VPC 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 VPC connection.

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

testdesc

DryRun

boolean

No

Specifies whether to perform a dry run, which checks for issues such as permissions and instance status. Valid values:

  • false (default): sends a normal request. After the request passes the check, the system modifies the name and description of the VPC connection.

  • true: sends a check request. The system validates the request without modifying the VPC connection. If the check passes, the system returns the ID of the request. Otherwise, the system returns an error.

false

TransitRouterVPCAttachmentOptions

object

No

The feature properties of the VPC connection. This parameter is deprecated. We recommend that you use the Options parameter.

string

No

The feature properties of the VPC connection. This parameter is deprecated. We recommend that you use the Options parameter.

ipv6Support: Specifies whether to enable IPv6.

  • enable: enables IPv6.

  • disable: disables IPv6.

Note

Before you enable IPv6 for a VPC connection, make sure that IPv6 is enabled for the VPC and the vSwitches in the VPC. For more information, see AllocateVpcIpv6Cidr and CreateVSwitchCidrReservation.

ipv6Support:enable

AutoPublishRouteEnabled

boolean

No

Specifies whether to allow the Enterprise Edition transit router to automatically advertise routes to the VPC.

  • false: The transit router does not automatically advertise routes.

  • true: The transit router automatically advertises routes.

true

OrderType

string

No

The billing method.

PayByCenOwner

Response elements

Element

Type

Description

Example

object

RequestId

string

The ID of the request.

7E61D334-4025-41EF-9145-FC327B35301D

Examples

Success response

JSON format

{
  "RequestId": "7E61D334-4025-41EF-9145-FC327B35301D"
}

Error codes

HTTP status code

Error code

Error message

Description

400

IncorrectStatus.TransitRouterAttachmentId

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

InvalidTransitRouterAttachmentId.NotFound

TransitRouterAttachmentId is not found.

The error message returned because the ID of the network instance does not exist.

400

InvalidOperation.RegionNotSupport

The operation is not supported in this region.

The error message returned because this operation is not supported in the specified region.

400

InvalidOperation.VpcAutoRoutesPublishInOtherCEN

The operation is not supported because the VPC is already set autoRoutesPublish in other CEN.

400

QuotaExceeded.VpcAutoRoutesPublishPerTransitRouter

The count of VPC instance which set autoRoutesPublish in transitRouter is over limit.

400

InvalidOperation.VpnAssociated

The operation is not supported because the VPC is associated with VPN.

The error message returned because the specified VPC is associated with a VPN.

400

IllegalParam.Ipv6Support

Ipv6Support is illegal. Valid Values are [enable, disable].

The Ipv6Support value of the request parameter is invalid. The valid value is enable or disable.

400

OperationFailed.VSwitchNotFound

The specified vswitch not found.

The specified vswitch not found.

400

OperationFailed.VSwitchIpv6CidrNotAllocated

The specified vswitch does not have IPv6 address allocated.

The specified vswitch does not have IPv6 address allocated.

400

OperationInvalid.AttachmentReferencedIPv6RouteEntryExisted

Operation is failed because there is at least one route entry(IPv6) which next hop is the specified attachment.

Operation is failed because there is at least one route entry(IPv6) which next hop is the specified attachment.

400

OperationInvalid.AttachmentReferencedVpcIPv6RouteEntryExisted

The specified attachment is referenced by vpc route entry(IPv6).

The specified attachment is referenced by vpc route entry(IPv6).

400

OperationInvalid.EniReferencedIPv6RouteEntryExisted

Operation is failed because there is at least one route entry(IPv6) which next hop is network interface that the specified attachment referenced.

Operation is failed because there is at least one route entry(IPv6) which next hop is network interface that the specified attachment referenced.

400

OperationUnsupported.VpcRoutePropagationSource

The operation on this VPC route propagation source is not supported.

The operation on this VPC route propagation source is not supported.

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

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

INVALID_OPERATION_RESOURCE_NOT_SUPPORT_APPLIANCE_MODE

Only VPC attachment support appliance mode.

Only VPC attachment support appliance mode.

400

InvalidParameter.Ipv6Support

The specified parameter Ipv6Support is invalid.

The parameter Ipv6Support entered is illegal.

400

InvalidParameter.ApplianceModeSupport

The specified parameter ApplianceModeSupport is invalid.

The parameter ApplianceModeSupport entered is illegal.

400

ParamExclusive.TransitRouterVPCAttachmentOptionsAndOptions

When creating or modifying a VPC attachment, the input parameter TransitRouterVPCAttachmentOptions and Options cannot be used at the same time.

When creating or modifying a VPC attachment, the input parameter TransitRouterVPCAttachmentOptions and Options cannot be used at the same time.

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.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.