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It's one of the most significant issues to acquire path latency and bandwidth utilization ratio of every link in high-speed IP networks for it takes dramatic influence on the performance of resource management, congestion control and multi-route control. In this paper, a novel mixed cover model with line card gathering agent is proposed and implemented for the simultaneous measurement of path latency and bandwidth utilization. Furthermore, the design and simulation of this model has been realized based on FPGA and the test results indicate that this kind of line card can realize the function of link- speed statistics and link-speed management for probe packet. Consequently, the measurement requirements of Gigabit Ethernet can be met appropriately.