QoS Management Scheme Based on OAM Performance Management

Monitoring the change of network performance parameters is a key to realize the QoS management in ATM networks. The OAM performance management function defined by ITU-T, however, simply monitors network performance and reports sratus information. It can not give QoS management an enough support. In terms of the relationship between QoS and network performance parameter, an ATM layered QoS management model is proposed and defined. In this model, an improvement in OAM performance management functions is also made. Some new functions, which are necessary to QoS management, are defined in reserved field of activation/deactivation OAM cell and forward monitoring/backward reporting OAM cell.