Patent ID: 8804537
Filing Date: 2014-08-12
Classification: H04L

Abstract:
1. A loop detecting device comprising: a receiving unit which receives from a packet information extracting device for extracting information from each packet transmitted and received between packet transfer devices, packet information including first predetermined information and second predetermined information in the packet; a sorting unit which classifies the packets from each of which information is extracted by the packet information extracting device, based on the first predetermined information included in the packet information, counts a number of the classified packets for each first predetermined information, and specifies the first predetermined information in which a count result reaches greater than or equal to a first threshold value; and a determining unit which determines whether each packet having the first predetermined information specified by the sorting unit comprises a loop packet or whether each flow specified by the first predetermined information comprises a loop flow by using the second predetermined information included in the packet information received by the receiving unit with the first predetermined information specified by the sorting unit as a target.