Patent ID: 8050182
Filing Date: 2011-11-01
Classification: H04L

Abstract:
1. A non-transitory storage medium storing a network failure detection program for causing a computer to execute procedures, the computer being used as a node that is on a transmission path through which a service transmitted from a delivery server on a network is transmitted and that monitors traffic of the service transmitted from the delivery server, the procedures comprising: specifying, by using the identifier capable of identifying the delivery server, a upstream node that is located upstream from the node on the transmission path and that has an identifier, and registering the upstream node in a group information managing database; transmitting a link construction message to the upstream node; registering a downstream node in the group information managing database when the link construction message is received from the downstream node that is located downstream from the node on the transmission path; detecting a quality of traffic of the service delivered to the node when the node is a most downstream node on the transmission path which does not have the downstream node registered in the group information managing database, and transmitting the quality of the traffic to the upstream node; determining whether or not a failure has occurred in the traffic of the service for the downstream node on the basis of the quality of the traffic received from the downstream node; and reporting a failure location, the reporting including