Method and device for fault monitoring

摘要

A method, system and apparatus enables carrier-grade network fault monitoring in an unreliable network transport environment. An element management system (6) is adapted to formulate and send notifications through the unreliable network transport environment, each notification having an unique transmitted notification serial number (TxNSN). A network management system (12) is operatively connected for bi-directional communication with the element management system. The network management system includes a detection mechanism responsive to notifications received from the element management system to detect a missing notification on the basis of the respective TxNSNs of received notifications; and a polling mechanism responsive to detection of a missing notification to send a polling request to the element management system for transmission of a response containing data related to the missing notification. The advantage is simple, easily managed, carrier-grade network fault monitoring without overloading the unreliable network transport.