NODE, RING NETWORK, PACKET TRANSFER METHOD, AND PROGRAM

摘要

The present invention improves the line utilization rate of a network having a ring-type network topology. A node forms a ring-type network topology with neighboring nodes and comprises: a packet transmission and reception unit transmitting and receiving a packet via a logical link logically integrating a plurality of links formed with the neighboring nodes; a packet processing unit determining a forwarding destination of a received packet by referring to a predetermined forwarding table; a packet switching unit switching a packet to the determined forwarding destination; and a bypass management unit forwarding, if switching a packet to the determined forwarding destination causes traffic flowing through a logical link formed with a downstream node included in the ring-type network topology to exceed a predetermined band, the packet in an opposite direction by using a logical link formed with an upstream node included in the ring-type network topology.