**To associate a transit gateway route table with a transit gateway attachment** The following example associates the specified transit gateway route table with the specified VPC attachment. :: aws ec2 associate-transit-gateway-route-table \ --transit-gateway-route-table-id tgw-rtb-002573ed1eEXAMPLE \ --transit-gateway-attachment-id tgw-attach-0b5968d3b6EXAMPLE Output:: { "Association": { "TransitGatewayRouteTableId": "tgw-rtb-002573ed1eEXAMPLE", "TransitGatewayAttachmentId": "tgw-attach-0b5968d3b6EXAMPLE", "ResourceId": "vpc-0065acced4EXAMPLE", "ResourceType": "vpc", "State": "associating" } } For more information, see `Associate a Transit Gateway Route Table <https://docs.aws.amazon.com/vpc/latest/tgw/tgw-route-tables.html#associate-tgw-route-table>`__ in the *AWS Transit Gateways Guide*.