Amazon Elastic Compute Cloud
API Reference (API Version 2016-11-15)
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Associates a subnet with a route table. The subnet and route table must be in the same VPC. This association causes traffic originating from the subnet to be routed according to the routes in the route table. The action returns an association ID, which you need in order to disassociate the route table from the subnet later. A route table can be associated with multiple subnets.

For more information, see Route Tables in the Amazon Virtual Private Cloud User Guide.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.


Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.

Type: Boolean

Required: No


The ID of the route table.

Type: String

Required: Yes


The ID of the subnet.

Type: String

Required: Yes

Response Elements

The following elements are returned by the service.


The route table association ID. This ID is required for disassociating the route table.

Type: String


The ID of the request.

Type: String


For information about the errors that are common to all actions, see Common Client Errors.



This example associates a route table with the ID rtb-e4ad488d with a subnet with the ID subnet-15ad487c.

Sample Request &RouteTableId=rtb-e4ad488d &SubnetId=subnet-15ad487c

Sample Response

<AssociateRouteTableResponse xmlns=""> <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId> <associationId>rtbassoc-f8ad4891</associationId> </AssociateRouteTableResponse>

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: