METHOD AND APPARATUS FOR PREVENTING COLLISION OF ADDRESS

• Main Authors: HAN, MIN HO, KIM, KI YOUNG, KIM, YOUNG HO, LIM, JAE DEOK, CHUNG, BO HEUNG, RYU, SEUNG HO
• Format: Patent
• Language: English
• Published: 01.02.2007
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

An apparatus and a method for preventing conflict of addresses are provided to previously prevent possibility of the address conflict which can be generated when a stateful address autoconfiguration technique and a stateless address autoconfiguration technique are simultaneously provided in the IPv6(Internet Protocol version 6) network environment and when an arbitrary address is manually configured instead of the stateless address autoconfiguration technique, thereby preventing the conflict during network connection of various mobile terminals and home appliances through the stateless address autoconfiguration technique. An apparatus(100) for preventing conflict of addresses comprises the followings: a receiver(110) for receiving a packet if the packet includes an NS(Neighbor Solicitation) message for confirming whether the addresses is used or not on the basis of a header of the packet received by using a promiscuous mode; a uniqueness determiner(120) for determining whether an address, which is included within the received NS message and will be used, is consistent with N number of fixed addresses; and a conflict informer(130) which transmits an NA(Neighbor Advertisement) message showing that the address, which will be used, is redundant if the address which will be used is consistent with an address, which is not configured yet, among the N number of fixed addresses.