Patent ID: 6801498
Filing Date: 2004-10-05
Classification: H04L

Abstract:
Asynchronous transfer mode communication equipment having a system controller to control whole equipment and a plurality of unit controllers, each unit controller of said plurality of unit controllers controlling a connection with virtual paths and having a configuration that a connection between nodes is made by active virtual paths and standby virtual paths, for performing switching from said active virtual path to said standby virtual path when a failure occurs in said active path, each unit controller comprising:a virtual path paired information table showing a corresponding relationship between said active virtual path and said standby virtual path to be switched; a standby virtual path deciding means for retrieving said virtual path paired information table based on information about said active virtual path in which a failure occurs and for deciding said standby virtual path to be used for switching; and a virtual path switching means for performing switching of said active virtual path based on information about said standby virtual path decided by said standby virtual path deciding means, wherein the standby virtual path deciding means of each unit controller retrieves and decides the standby virtual path when a failure occurs in the active path, independent of said system controller.