Patent ID: 7907516
Filing Date: 2011-03-15
Classification: H04L

Abstract:
1. A node setting apparatus that sets a first node from among a plurality of nodes in a ring network as a master node, the node setting apparatus comprising: a failure detecting unit that detects occurrence of a failure in the ring network and transmits failure detection data to notify the master node of the detection of the failure, the master node being a node that restrains generation of a loop path in the ring network by blocking relay of user data in the ring network; a data transmitting unit that blocks relay of user data in the ring network on one side of the first node and transmits control data in the ring network after receiving a flash packet transmitted in response to the failure detection data transmitted by the failure detecting unit, the control data containing a priority order indicative of an order for setting the first node as the master node; and a judging unit that, when the first node receives control data transmitted in the ring network by the first node or a node other than the first node, judges whether the first node is to be set as the master node based on a priority order contained in received control data.