A schema for Network Monitoring Session Description from CoreGRID Augusto Ciufoletti (Università di Pisa) The CoreGRID framework for Grid Infrastructure envisions distinct distributed functionalities for Grid Monitoring, Workflow Management, Checkpointing and User Management. Such functionalies interact exchanging data structures containing data as well as operation requests. Our presentation focusses on the data structure used for Network Monitoring Requests, according with the Network Monitoring Architecture designed for CoreGRID by a joint research of INFN (Italy) and FORTH (Greece). Such architecture primarily features high scalability, security and modularity.