Patent ID: 7885258

Claim:
A packet switch equipment comprising: a packet switch chip having a number of ports so as to perform a packet switching operation, the packet switch chip sampling and outputting a number of packets according to a predetermined frequency, wherein said frequency being related to a percentage of said packets with regard to a total number of said packets; a communication channel for communicating with an operator terminal so as to receive setups of a number of parameters necessary for operations; a memory for storing information regarding control of packets and ports via the packet switch chip; and a CPU for controlling overall operations of the packet switch equipment, the CPU estimating a bandwidth used by each user of a packet outputted and sampled by the packet switch chip, based on a predetermined packet identifier of the packet, the CPU selectively performing a bandwidth limitation function for each user according to at least one statistical value obtained from said sampled data to achieve a maximum guaranteed bandwidth for each of said users.