Abstract: With the development of network technology, the increasing number of network users and the implementation of all kinds of large-scale real-time multimedia applications in network, campus network plays an increasingly significant role in the production and development process of enterprises and institutions, such as universities, hospitals and companies. Meanwhile, the network applications request for higher quality of network service. This paper introduces the main strategies of QoS solution for campus network, analyzes the DiffServ model, which adjusts the network resources by classifying and policy-control of correspondence data packets for campus networks, and investigates the realization of DiffServ model, so that it guarantees the QoS for campus networks.

Key words: campus network, QoS, DiffServ, DSCP, DS domain