RING NODE DEVICE, RING NETWORK SYSTEM, AND RING NETWORK CHANGING METHOD

摘要

PROBLEM TO BE SOLVED: To change logical ring network shape while holding communicability between a logical ring network and a node, that was communicable before changing the setting related to a logical communication path, in a ring network configured using a ring protocol.;SOLUTION: A ring node device is included in at least either one of a first logical ring network becoming the transfer source of a logical communication path, or a second logical ring network becoming the transfer destination of the logical communication path, and stops transfer related to the logical communication path, when the own device belongs only to a logical ring network becoming the transfer source of the logical communication path, and does not belong to the second logical ring network becoming the transfer destination of the logical communication path, and the logical communication path that is the transfer object of the own device includes a logical communication path set in a place other than the first logical ring network.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2018,JPO&INPIT