Since the usage of mobile applications gets higher, the availability of MANET needs better performance. The topology of MANET dynamically changes because of mobility. Consequently, the routing protocols used in MANET must be fast and save. Therefore, the performance analysis of MANET routing protocols becomes an interesting case in networking research area. In this paper, the performance of DSR routing protocol has been analysed in term of throughput, end-to-end delay, PDR and packet loss.