ListCenChildInstanceRouteEntriesToAttachment - Cloud Enterprise Network

Queries the routes that point to a network instance connection. The routes are retrieved from the route table of a network instance that is attached to an Enterprise Edition transit router.

Operation description

Ensure that you specify valid parameter values when you call the ListCenChildInstanceRouteEntriesToAttachment operation. If you specify an invalid parameter, the system returns a request ID but does not return the routes of the network instance that is connected to the Enterprise Edition transit router.

Try it now

Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

Test

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:ListCenChildInstanceRouteEntriesToAttachment

get

*TransitRouterPeerAttachment

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

None

Request parameters

Parameter	Type	Required	Description	Example
MaxResults	integer	No	The number of entries to return on each page. The default value is 20.	20
NextToken	string	No	The token for the next page of results. If this is your first query, leave this parameter empty. If a next query is required, set the value to the NextToken value returned from the last call.	FFmyTO70tTpLG6I3FmYAXGKPd****
CenId	string	No	The ID of the CEN instance.	cen-dc4vwznpwbobrl****
ChildInstanceRouteTableId	string	Yes	The ID of the route table of the network instance.	vtb-bp174d1gje79u1g4t****
TransitRouterAttachmentId	string	Yes	The ID of the network instance connection.	tr-attach-r6g0m3epjehw57****
RouteFilter	array<object>	No	The filter for the destination CIDR block.
	object	No
Key	string	No	The route matching mode. prefix-exact-match: exact match	prefix-exact-match
Value	array	No	A list of destination CIDR blocks.
	string	No	The destination CIDR block.	10.0.0.0/8
ServiceType	string	No	The type of the managed routing service. If this parameter is empty, the route is not managed. Set the value to TR. This value indicates that the route is managed by a transit router.	TR

Response parameters

Parameter	Type	Description	Example
	object	The response parameters.
NextToken	string	The token that is used for the next query. If NextToken is empty, no subsequent query is sent. If a value is returned for NextToken, the value is the token that is used for the next query.	FFmyTO70tTpLG6I3FmYAXGKPd****
RequestId	string	The request ID.	530BC816-F575-412A-AAB2-435125D26328
RouteEntry	array<object>	The details of the route.
	object	The details of the route.
CenId	string	The ID of the CEN instance.	cen-9adwg6ghpq8oq4dp7q
TransitRouterAttachmentId	string	The ID of the network instance connection.	tr-attach-y463sghkkv1loe****
Status	string	The status of the route. Valid values: Available: The route is active. Pending: The route is being configured. Modifying: The route is being modified.	Available
ServiceType	string	The type of the managed routing service. If this parameter is empty, the route is not managed. The value TR indicates that the route is managed by a transit router.	TR
DestinationCidrBlock	string	The destination CIDR block of the route.	10.0.0.0/8
ChildInstanceRouteTableId	string	The ID of the route table of the network instance.	vtb-bp1tlaj1c4nxr2t3e****

Examples

Success response

JSON format

{
  "NextToken": "FFmyTO70tTpLG6I3FmYAXGKPd****",
  "RequestId": "530BC816-F575-412A-AAB2-435125D26328",
  "RouteEntry": [
    {
      "CenId": "cen-9adwg6ghpq8oq4dp7q",
      "TransitRouterAttachmentId": "tr-attach-y463sghkkv1loe****",
      "Status": "Available",
      "ServiceType": "TR",
      "DestinationCidrBlock": "10.0.0.0/8",
      "ChildInstanceRouteTableId": "vtb-bp1tlaj1c4nxr2t3e****"
    }
  ]
}

Error codes

HTTP status code	Error code	Error message	Description
400	IllegalParam.NextToken	The parameter NextToken is invalid.	The error message returned because the NextToken parameter is set to an invalid value. Check the value and try again.
400	MissingParam.TransitRouterAttachmentId	The parameter TransitRouterAttachmentId is Missing.	The error message returned because the TransitRouterAttachmentId parameter is not set.
400	MissingParam.ChildInstanceRouteTableId	The parameter ChildInstanceRouteTableId is Missing.
400	InvalidParam.RouteFilter	The parameter RouteFilter is invalid.	The error message returned because the specified route filter is invalid.
400	ResourceNotFound.TransitRouterAttachment	The specified TransitRouterAttachment does not exist.
400	InvalidParam.RoutFilterKey	The specified Key of RouteFilter is invalid.	The error message returned because the specified route filter key is invalid.
400	InvalidParam.CenId	The specified CEN does not exist.
400	OperationFailed.CenInstanceStatus	The CEN instance is not in a valid state for the operation.
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.