Communications system, communications processing method, and nodes

摘要

To the logical links established between the first node and the second node by use of the first protocol belonging to the first layer, a signal, which is a signal of the second protocol belonging to the second layer higher than the first layer and to which signal the information identifying the transmission source node is transmitted. The first and the second nodes manage the communications links in association with the node identifier added to the signal received through the communications links.