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Cloud Enterprise Network:DeleteTransitRouterCidr

Last Updated:Apr 03, 2024

Deletes a CIDR block from a transit router.

Operation description

If IP addresses within the CIDR block have been allocated to network instances, the CIDR block cannot be deleted.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • The required resource types are displayed in bold characters.
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
  • TransitRouter

Request parameters


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 client token can contain only ASCII characters.

Note If you do not set this parameter, ClientToken is set to the value of RequestId. The value of RequestId for each API request may be different.

The ID of the transit router.


The ID of the CIDR block.

You can call the ListTransitRouterCidr operation to query the ID of a CIDR block.


The ID of the region where the transit router is deployed.

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


Specifies whether to perform a dry run. Valid values:

  • true: performs a dry run. The system checks the required parameters, request syntax, and limits. If the request fails the dry run, an error message is returned. If the request passes the dry run, the DryRunOperation error code is returned.
  • false (default): performs a dry run and sends the request.

Response parameters


The response.


The ID of the request.



Sample success responses


  "RequestId": "0876E54E-3E36-5C31-89F0-9EE8A9266F9A"

Error codes

HTTP status codeError codeError messageDescription
400OperationFailed.CidrBlockAllocatedCidr blocks are allocated from the cidr, which should be released first.The error message returned because the specified CIDR block is already occupied. Release the resources that occupy the CIDR block and try again.
400OperationFailed.CidrNotExistcidr is not exist.The error message returned because the specified CIDR block does not exist.
400InvalidParameterInvalid parameter.The error message returned because the parameter is set to an invalid value.
400UnauthorizedThe AccessKeyId is unauthorized.The error message returned because you do not have the permissions to perform this operation.

For a list of error codes, visit the Service error codes.