The present invention provides a computationally efficient system and method for aggregation of bandwidth of multiple active physical Interfaces based on an application layer. The said system comprises: a user interface for receiving the user defined input; at least one routing table updater for creating and updating routing table that lists the routes to particular destination of the communication link; at least one control module resides in the application layer of protocol stack; and multiple physical interfaces linked with the application layer for receiving and transmission of the data assigned by the said control module.