BOTTLENECK POINT DETECTION DEVICE AND METHOD FOR PREVENTING SERVICE QUALITY DETERIORATION THROUGH TRAFFIC MANAGEMENT

摘要

PURPOSE: A bottleneck point detection device and method are provided to be implemented in a client, thereby detecting a bottleneck point.;CONSTITUTION: A delay monitoring unit(130) receives an ICMP(Internet Control Message Protocol) message from a next router of a bottleneck candidate point. The ICMP message includes an IP(Internet Protocol) header of a probe packet received in the next router of the bottleneck candidate point. The delay monitoring unit extracts time stamps recorded in the IP header of the probe packet in the ICMP message. The delay monitoring unit measures a delay state value of the bottleneck candidate point based on the time stamps. A bottleneck point detection unit(140) determines whether or not the bottleneck candidate point is a bottleneck point based on the delay state value of the bottleneck candidate point.;COPYRIGHT KIPO 2013;[Reference numerals] (100) Bottleneck point detection device; (110) Bottleneck point prediction unit; (120) Probe packet transmission unit; (130) Delay monitoring unit; (140) Bottleneck point detection unit; (150) IP network; (AA) Probe packet; (BB) ICMP message