DATA COMMUNICATION APPARATUS, CONTROL METHOD OF DATA COMMUNICATION APPARATUS, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To certainly perform a transmission of information required for making a communication apparatus participate in a virtual network to a switching hub 1004 while realizing power saving of the communication apparatus.SOLUTION: The communication apparatus for communicating with an external apparatus through a relay device includes: communication means for performing communication with the relay device; control means for, when causing the communication device to move from a first power mode to a second power mode with smaller power consumption than the first power mode, controlling a communication speed of the communication means to be a low speed. The control means causes the communication means to transmit identification information of the communication device after a lapse of a predetermined period.