Patent ID: 7724644
Filing Date: 2010-05-25
Classification: H04J,H04L

Abstract:
1. A node redundancy method applied to a packet ring network having a plurality of nodes and a plurality of redundant nodes, the redundant nodes including a first redundant node and at least one second redundant node, comprising: the first redundant node setting in a message packet a common address and setting information, and broadcast-transmitting the message packet over the packet ring network, wherein the common address is an address that is commonly used with the second redundant node, and setting information is information indicative of the fact that the first redundant node is a redundant node; the second redundant node receiving the message packet and setting in a ring topology table existence information and the common address, wherein the existence information is information indicative of existence of the first redundant node in the packet ring network; and a node from among the nodes, when receiving a packet destined to a redundant node, setting the common address as a destination address in the packet and transmitting the packet to the packet ring network.