Nowadays, Peer-to-Peer (P2P) networks and services are increasingly present in the networking world. Thus for this reason, management of such networks becomes important. In this summer training report, we will discuss our model for the management of JXTA which is a generic platform for the development of P2P applications. Our model is based on the generic management information model already developed and adds new classes in order to instantiate the JXTA model absolutely. Then following the theoretical modeling is the part concerning the implementation of the model. This is to be achieved by deploying agents on each peer and then finally collecting the information data from each agent which would be done by a manager. || De nos jours, les réseaux et services pair à pair (P2P) sont de plus en plus présents dans le monde des réseaux. Pour cette raison, la gestion de telles infrastructures est primordiale. Dans ce rapport, nous présentons un modèle pour la gestion de Jxta, u