METHOD OF SWITCHING BETWEEN NETWORK CONNECTION DEVICES USINGREDUNDANCY PROTOCOL AND PSEUDO REDUNDANT CONFIGURATION SETTING MEANS AND NETWORK SYSTEM

摘要

A network system comprises routers (704 and 705) connected through a network , pseudo-redundant configuring means (702 and 703) connected with the individu al routers for communications with a redundant protocol, and interlocking contr ol means (701) connected with the pseudo-redundant configuring means (702 and 703). When a server (716) is a backup server and keeps a standby state, the pseudo-redundant configuring means (703) issues a signal for keeping the standby state, to the router (705). When the server is switched between the standby state and an active state, the interlocking control means (701) send s an instruction for switching the standby state and the active state, to the pseudo-redundant configuring means (702 and 703).