Efficient performance and high throughput are the major goals of the network performance management. Standard UNIX system is short of efficient management of network traffic. This research thesis implements a network traffic query utility for users to monitor the network traffic situations. The network users can also query the network/system status of their computer hosts. Having Realized the network traffic situation，manager and users can reconfigure the network configuration，or reallocate the network resources to improve the network performance and throughput. The results show that techniques presented work very well.