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Cloud Enterprise Network:DescribeRouteConflict

Last Updated:Aug 07, 2025

The DescribeRouteConflict operation queries conflicting routes in a network 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 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:DescribeRouteConflict

get

*VPC

acs:vpc:*:{#accountId}:vpc/{#vpcId}

None None

Request parameters

Parameter

Type

Required

Description

Example

PageNumber

integer

No

The page number. Default value: 1.

1

PageSize

integer

No

The number of entries to return on each page. Default value: 10. Valid values: 1 to 50.

10

ChildInstanceId

string

Yes

The ID of the network instance to query.

ccn-0q3b7oviikmm9h****

ChildInstanceType

string

Yes

The type of the network instance. Valid values:

  • VPC: virtual private cloud.

  • VBR: virtual border router.

  • CCN: Cloud Connect Network.

CCN

ChildInstanceRegionId

string

Yes

The ID of the region where the network instance is deployed.

You can call the DescribeChildInstanceRegions operation to query region IDs.

ccn-cn-shanghai

ChildInstanceRouteTableId

string

Yes

The ID of the route table of the network instance.

vtb-bp174d1gje79u1g4t****

DestinationCidrBlock

string

No

The destination CIDR block of the conflicting route.

172.16.0.0/16

Response parameters

Parameter

Type

Description

Example

object

PageSize

integer

The number of entries returned on each page.

10

RequestId

string

The ID of the request.

EE3A2CC7-41F1-58DB-8306-CFC99D9C747B

PageNumber

integer

The page number.

1

TotalCount

integer

The total number of entries.

1

RouteConflicts

object

RouteConflict

array<object>

Details about the conflicting routes.

object

Status

string

The reason for the route conflict.

  • conflict: The route has the same destination CIDR block as another route.

  • overflow: The number of routes in the route table of another network instance has reached the upper limit.

conflict

DestinationCidrBlock

string

The destination CIDR block of the conflicting route.

172.16.0.0/16

InstanceId

string

The ID of the peer network instance that contains the conflicting route.

ccn-0q3b7oviikmm9h****

InstanceType

string

The type of the peer network instance that contains the conflicting route.

  • VPC: virtual private cloud.

  • VBR: virtual border router.

  • CCN: Cloud Connect Network.

CCN

RegionId

string

The ID of the region where the peer network instance is deployed.

ccn-cn-shanghai

Examples

Success response

JSON format

{
  "PageSize": 10,
  "RequestId": "EE3A2CC7-41F1-58DB-8306-CFC99D9C747B",
  "PageNumber": 1,
  "TotalCount": 1,
  "RouteConflicts": {
    "RouteConflict": [
      {
        "Status": "conflict",
        "DestinationCidrBlock": "172.16.0.0/16",
        "InstanceId": "ccn-0q3b7oviikmm9h****",
        "InstanceType": "CCN",
        "RegionId": "ccn-cn-shanghai"
      }
    ]
  }
}

Error response

JSON format

{
  "PageNumber": 1,
  "TotalCount": 0,
  "PageSize": 10,
  "RequestId": "B6C11547-2D56-4EEC-A8D5-FDC5A53E53D0",
  "RouteConflicts": {
    "RouteConflict": []
  }
}

Error codes

HTTP status code

Error code

Error message

Description

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.
404 InvalidChildInstanceId.NotFound The specified ChildInstanceId is not found. The specified child instance ID does not exist.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.