Infrastructure for network management definitions: managing entity agent data managing managed devices contain data entity managed device managed objects whose data is gathered into a agent data network Management Information management Base(MIB) managed device protocol agent data agent data managed device managed device Network Management 9-5 Network Management 9-5 Infrastructure for network management agent data agent data agent data agent data managed device managed device managed device managed device managing entity data network management protocol definitions: managed devices contain managed objects whose data is gathered into a Management Information Base (MIB) managing entity