Query CEN Route Entries to Attachments via ListCenChildInstanceRouteEntriesToAttachment - Cloud Enterprise Network - Alibaba Cloud - Cloud Enterprise Network

Queries route entries that forward traffic to a network instance connection in the route table of a network instance associated with an Enterprise Edition transit router.

Operation description

When you call the ListCenChildInstanceRouteEntriesToAttachment operation, make sure that the parameter values you specify are valid. If you specify invalid parameter values, the operation returns a RequestId but does not display the route entries of network instances connected to the Enterprise Edition transit router.

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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:ListCenChildInstanceRouteEntriesToAttachment

get

*TransitRouterPeerAttachment

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

None

Request parameters

Parameter	Type	Required	Description	Example
MaxResults	integer	No	The number of entries per page for a paged query. Default value: 20.	20
NextToken	string	No	Specifies whether a next query token (Token) exists. Valid values: You do not need to specify this parameter for the first query or if no next query exists. If a next query exists, set this parameter to the NextToken value returned by the previous API call.	FFmyTO70tTpLG6I3FmYAXGKPd****
CenId	string	No	The Cloud Enterprise Network (CEN) instance ID.	cen-dc4vwznpwbobrl****
ChildInstanceRouteTableId	string	Yes	The route table ID of the network instance.	vtb-bp174d1gje79u1g4t****
TransitRouterAttachmentId	string	Yes	The ID of the network instance connection.	tr-attach-r6g0m3epjehw57****
RouteFilter	array<object>	No	The destination CIDR block filter.
	object	No
Key	string	No	The route match mode. prefix-exact-match: exact match. Valid values: prefix-exact-match : 完全匹配	prefix-exact-match
Value	array	No	The list of destination CIDR blocks.
	string	No	The destination CIDR block.	10.0.0.0/8
ServiceType	string	No	The type of route hosting. If this field is empty, the route is not hosted. Valid values: TR, which indicates that the hosting type is transit router.	TR

Response elements

Element	Type	Description	Example
	object	The response parameters.
NextToken	string	Indicates whether a next query token (Token) exists. Valid values: If NextToken is empty, no next query exists. If NextToken is returned, the value indicates the token for the next query.	FFmyTO70tTpLG6I3FmYAXGKPd****
RequestId	string	The request ID.	530BC816-F575-412A-AAB2-435125D26328
RouteEntry	array<object>	The details of the route entries.
	object	The details of the route entries.
CenId	string	The Cloud Enterprise Network (CEN) instance ID.	cen-9adwg6ghpq8oq4dp7q
TransitRouterAttachmentId	string	The ID of the network instance connection.	tr-attach-y463sghkkv1loe****
Status	string	The status of the route entry. Valid values: Available: available. Pending: being configured. Modifying: being modified.	Available
ServiceType	string	The type of route hosting. If this field is empty, the route is not hosted. Valid values: TR, which indicates that the hosting type is transit router.	TR
DestinationCidrBlock	string	The destination CIDR block of the route entry.	10.0.0.0/8
ChildInstanceRouteTableId	string	The route table ID 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.