IP NETWORK REROUTING SYSTEM USING LIFE-AND-DEATH SUPERVISION

摘要

PROBLEM TO BE SOLVED: To solve the problem wherein a load is imposed to a person in charge of management in the conventional network life-and-death supervision system, because modification of the setting becomes necessary in the entire supervision and control apparatuses when a modification affecting the processing capacity of a supervision object apparatus occurs.;SOLUTION: On receipt of a supervision packet from a supervision apparatus 1, a supervision object apparatus 2 transmits a response packet (ICMP packet) to the supervision apparatus 1. From the received response packet, the supervision apparatus 1 calculates a present optimal supervision interval time and a maximum supervision interval time. As a result of the comparison between the optimal supervision interval time and the maximum supervision interval time, on deciding that the optimal supervision interval time is shorter than the maximum supervision interval time, the supervision apparatus 1 transmits a supervision packet according to the optimal supervision interval time. On deciding that the optimal supervision interval time is longer than the maximum supervision interval time, the supervision apparatus 1 temporarily suspends the transmission of the supervision packet which is originally to be transmitted to the supervision object apparatus 2.;COPYRIGHT: (C)2005,JPO&NCIPI