Measure the forwarding rate of a wire speed package

The packet forwarding line rate is measured based on the number of 64 bytes of data packets (minimum packet) sent per unit time. For Gigabit Ethernet, the calculation method is as follows: 1000 Mbps/8bit/(64 + 8 + 12) byte = 1,488,095 PPS Description: When the Ethernet frame is 64 byte, the fixed overhead of the 8 byte frame header and the 12 byte frame gap must be considered. Therefore, the packet forwarding rate of A 1-gigabit Ethernet port when forwarding a 64-byte packet is 1.488 mpps. The speed of the Ethernet port package is exactly 148.8 of that of Gigabit Ethernet, and mpps. For the POs port, the calculation method is as follows: The effective rate of containers in sdh of a OC-48 = SDH efficiency × efficiency of PPP encapsulation :( 4 bytes of PPP header) is calculated in a 40-byte package, OC-48 effective rate = (261/270) * (40/44) * 2500 m = 2197 Mbps, so packet forwarding efficiency = 2197/8/40 = 6.866 mpps; calculated in 64-byte packets, OC-48 effective rate = (261/270) * (64/68) * 2500 m = 2275 Mbps, so packet forwarding efficiency = 2275/8/64 = 4.442 mpps;