The session information replication method in the access gateway device and the access gateway device

摘要

PROBLEM TO BE SOLVED: To efficiently duplicate the session information of an active gateway server which performs a normal operation to a standby gateway server standing by for a fault or the like of the active gateway server, in an access gateway device which controls the access of a user in a network system.;SOLUTION: Changed session information for each call or data within the changed session information is duplicated from the active gateway server to the standby gateway server in the order of priority. The duplication of high priority session information is achieved even when the band of a network is insufficient or the like, and low priority session information which cannot be duplicated is duplicated when the band or the like of the network is sufficient.;COPYRIGHT: (C)2011,JPO&INPIT