Patent ID: 8274911
Filing Date: 2012-09-25
Classification: H04L

Abstract:
1. A network monitoring system for monitoring a communication network including a plurality of communication apparatuses, the network monitoring system comprising: an obtaining part configured to obtain a transmission traffic amount and a reception traffic amount of each port of the plural communication apparatuses; a determining part configured to determine whether the transmission traffic amount is no less than a first threshold and whether the reception traffic amount is less than a second threshold for each port of the plural communication apparatuses; a storage part configured to store connecting path data of the communication network therein; an extracting part configured to extract a loop affected path; and an outputting part configured to output data of the loop affected path extracted by the extracting part; wherein the loop affected path is a connecting path that includes a loop affected candidate port and is connected to a loop path, wherein the loop affected candidate port is a port determined as having the transmission traffic amount that is no less than the first threshold and having the reception traffic amount that is less than the second threshold, wherein the extracting part is configured to determine whether a communication apparatus including a port constituting the path extracted by the loop affected path extracting part includes the loop affected candidate port, and wherein the loop affected path extracted by the loop affected path extracting part is a connecting path including the loop affected candidate port in a case where the loop affected candidate port is included in the communication apparatus.