CreateCenChildInstanceRouteEntryToAttachment - Cloud Enterprise Network

You can call the CreateCenChildInstanceRouteEntryToAttachment operation to create a route for a network instance connected to an Enterprise Edition transit router. The next hop of the route points to the transit router in the current region.

Operation description

You can create routes only for Virtual Private Cloud (VPC) and virtual border router (VBR) instances that are connected to an Enterprise Edition transit router.
The next hop of the route is the transit router connection (the network instance connection) by default and cannot be modified.
CreateCenChildInstanceRouteEntryToAttachment is an asynchronous operation. After you send a request, the system returns a RequestId and creates the route in the background. The route is not created immediately. You can call the DescribeRouteEntryList operation for the VPC to query the status of the route.
- If the route is in the Pending state, it is being created. During this time, you can only query the route and cannot perform other operations.
- If the route is in the Available state, the route is created.

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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 support 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:CreateCenChildInstanceRouteEntryToAttachment

create

*CenInstance

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

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 a token, but you must make sure that the token is unique among different requests. The 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****
DryRun	boolean	No	Specifies whether to perform a dry run, without performing the actual request. The dry run checks permissions and the status of the instance. Valid values: false (default): sends a normal request and creates a route for the network instance after the request passes the check. true: sends a dry run request to check the request parameters. If the request passes the check, the system does not create a route for the network instance. The system checks the required parameters and the request format. If the request fails the check, an error message is returned. If the request passes the check, the `DryRunOperation` error code is returned. Note This parameter is not in use.	false
CenId	string	Yes	The ID of the CEN instance.	vpc-bp1n6cbxcszp55vxo****
TransitRouterAttachmentId	string	Yes	The ID of the network instance connection.	tr-attach-r1qhupkc19iadz****
RouteTableId	string	Yes	The ID of the route table of the network instance.	vrt-bp1msipdczo9lejup****
DestinationCidrBlock	string	Yes	The destination CIDR block of the route.	10.0.0.0/24

Response parameters

Parameter	Type	Description	Example
	object	The response parameters.
RequestId	string	The request ID.	A95A100B-3F3A-56F4-A5DE-19DB7E994807

Examples

Success response

JSON format

{
  "RequestId": "A95A100B-3F3A-56F4-A5DE-19DB7E994807"
}

Error codes

HTTP status code	Error code	Error message	Description
400	Forbidden.VpcAsInternetGateway	It’s forbidden that using Vpc as internet gateway for your private IDC.
400	InvalidCIDRBlock.Duplicate	Specified CIDR block is already exists.	The error message returned because the specified CIDR block already exists.
400	InvalidCidrBlock.Malformed	Specified CIDR block is not valid.	The error message returned because the specified CIDR block is invalid.
400	OperationFailed.RouteConflict	Route conflict exists in routing table.	The error message returned because two or more routes in the route table conflict with each other.
400	InvalidOperation.UnsupportnexthopType	The specified next hop type is not supported by this operation.	The specified next hop type is not supported by this operation.
400	IncorrectStatus.VpcRouteEntry	The resource is not in a valid state for the attachment operation.	The error message returned because the status of the VPC route entry does not support this operation. Try again later.
400	OperationDenied.RouteTableTypeNotPermitted	The operation is not allowed because of RouteTableTypeNotPermitted.	The error message returned because this operation is not supported by the specified type of route table.
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	SystemBusy	The system is busy. Please try again later.	The error message returned because the system is unavailable. Try again later.
400	OperationUnsupported.DestinationCidrBlockOverlapWithVSwitch	The destination network segment specified in the route entry overlaps with the vSwitch network segment.
404	InvalidAttachmentId.NotFound	The specified AttachmentId is not found.	The error message returned because the specified network instance connection ID does not exist.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.