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Cloud Enterprise Network:ListTransitRouterMulticastDomainVSwitches

Last Updated:Sep 02, 2026

Queries information about vSwitches that are associated with multicast domains in a VPC-connected instance after the VPC-connected instance is connected to an Enterprise Edition transit router.

Operation description

When you call the ListTransitRouterMulticastDomainVSwitches operation, make sure that the parameter values you specify are correct. If you specify incorrect parameter values, the system still returns a RequestId but does not return information about vSwitches that are associated with multicast domains in the VPC-connected instance.

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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:ListTransitRouterMulticastDomainVSwitches

get

*CenInstance

acs:cen:*:{#accountId}:ceninstance/{#ceninstanceId}

None None

Request parameters

Parameter

Type

Required

Description

Example

CenId

string

Yes

The instance ID of the Cloud Enterprise Network (CEN).

cen-44m0p68spvlrqq****

VpcId

string

Yes

The ID of the VPC-connected instance.

vpc-p0wr1cd4fcuxy3ui0****

VSwitchIds

array

No

The list of vSwitch IDs.

string

No

The vSwitch ID.

You can specify at most 50 vSwitch IDs at a time.

vsw-p0w5ejr9bzfsttiza****

MaxResults

integer

No

The number of entries per page for a paged query. Minimum value: 0. Default value: 20.

20

NextToken

string

No

The pagination token. Valid values:

  • You do not need to specify this parameter for the first request or if no subsequent query exists.

  • If a subsequent query exists, set the value to the NextToken value returned by the previous API call.

FFmyTO70tTpLG6I3FmYAXGKPd****

Response elements

Element

Type

Description

Example

object

The response parameters.

NextToken

string

The pagination token. Valid values:

  • If NextToken is empty, no subsequent query exists.

  • If NextToken is returned, the value indicates the token for the next query.

FFmyTO70tTpLG6I3FmYAXGKPd****

RequestId

string

The request ID.

B0E7E43C-979A-5130-AA0D-B3ADA69E0827

TotalCount

integer

The total number of entries returned.

2

MaxResults

integer

The number of entries per page for a paged query.

20

VSwitchIds

array

The list of vSwitch IDs.

string

The vSwitch ID.

vsw-p0w5ejr9bzfsttiza****

Examples

Success response

JSON format

{
  "NextToken": "FFmyTO70tTpLG6I3FmYAXGKPd****",
  "RequestId": "B0E7E43C-979A-5130-AA0D-B3ADA69E0827",
  "TotalCount": 2,
  "MaxResults": 20,
  "VSwitchIds": [
    "vsw-p0w5ejr9bzfsttiza****"
  ]
}

Error codes

HTTP status code

Error code

Error message

Description

400 IllegalParam.NextToken The specified NextToken is invalid. The error message returned because the NextToken parameter is set to an invalid value.
400 IllegalParam.TrInstance The specified TransitRouter is invalid. The error message returned because the TransitRouter parameter is set to an invalid value.
400 IllegalParam.Region The specified Region is invalid. The error message returned because the specified region is invalid.
400 InvalidCenId.NotFound CenId is not found. The error message returned because the specified CEN instance does not exist.
400 IllegalParam.MaxResults The specified MaxResults is illegal. MaxResults illegal.
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.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.