Patent ID: 8593974
Filing Date: 2013-11-26
Classification: H04L

Abstract:
1. A method comprising: monitoring packets sent in a communications system that includes a first communication network and a second communication network that are configured to communicate with each other through a connection apparatus connected between the first communication network and the second communication network; receiving packets sent from the second communication network; determining whether each received packet belongs to a first packet group including packets sent from the first communication network to the second communication network without passing through the connection apparatus, a second packet group including packets sent from the connection apparatus to the second communication network in a first predetermined protocol that indicates the connection apparatus as a source apparatus, or a third packet group including packets sent from the first communication network to the second communication network through the connection apparatus in a second predetermined protocol that indicates a source apparatus other than the connection apparatus, the second predetermined protocol being different from the first predetermined protocol; separately summarizing the received packets for each of the determined packet groups; comparing the summarized results of the received packets in the respective packet groups; and determining which of the first communication network and the second communication network is causing a communication failure based on a result of the comparison.