| 摘要 |
Methods and mechanisms for regulating network packet traffic in an integrated services network, by selectively dropping packets of particular traffic, are described. Packets of network traffic arriving at an input port of a router or switch are selectively copied to one of two queues according to the type of transmission (voice, video, data) represented by the packets. A first queue receives traffic requiring guaranteed bandwidth and the second queue receives traffic requiring guaranteed minimum delay. Data in the packets indicates when the packet should be dropped relative to other packets in a packet stream. The process of marking packets with data used to indicate a drop order is referred to herein as marking packets. A network device that receives marked packets, for example, a router, may drop some of packets according to a drop policy based on the values used to mark the packets.
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