Importance

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Abstract

A system shapes traffic in a multiport network device. The system includes multiple token buckets and token bucket logic. The token buckets correspond to multiple priority queues of the multiple output ports of the network device and store one or more tokens. Each of the tokens corresponds to a byte of one or more received packets to be transmitted by the network device. The token bucket control logic generates the tokens for the token buckets. The token bucket control logic includes a master counter and multiple bucket counters. The master counter counts to a first count value and generates a done signal when the count reaches the first count value. The bucket counters, corresponding to the token buckets, receive the done signal, count to a second count value, and generate a token increment signal for storing a token in the corresponding token buckets when the count reaches the second count value.

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First Claim