At the same time the accuracy of measuring propagation delay and distance between the sending and receiving nodes in packet network with cutting through system the packet network node in order to execute method, and this method safely

摘要

Method and that system which measure the distance between the nodes of packet network are offered. The system and method of this invention retain, measuring the transmitted time of pingupaketsuto which from the starting point node was transmitted to the destination node, the response packet for pingupaketsuto transmit to the starting point node from the destination node, the pingupaketsuto or response packet transmit to the following node or the destination node with cutting through system without intermediate node delay, measure the reception time of the response packet with the starting point node and calculate round trip time, measure the distance between the nodes on the basis of round trip time and the propagation velocity of pingupaketsuto. Selective figure Figure 3