A first electronic apparatus is provided including a communicator configured to communicate with at least one among a plurality of electronic apparatuses respectively assigned with main resource identifiers for identifying the apparatuses over a network and a controller configured to assign a sub resource identifier, which corresponds to a main resource identifier of a second electronic apparatus and has a smaller unit size than the main resource identifier, to the second electronic apparatus, transmit the assigned sub resource identifier to the second electronic apparatus which the second electronic apparatus stores, use the assigned sub resource identifier of the second electronic apparatus to request communication with the second electronic apparatus, begin communication with the second electronic apparatus if the second electronic apparatus responds to the request for communication, and perform an operation of the second electronic apparatus based on a command from the first electronic apparatus.