Random early detection policer using randomization of packet drops
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United States of America Patent
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Dec 12, 2006
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app pub date -
Dec 28, 2000
filing date -
Dec 28, 2000
priority date (Note) -
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Abstract
A Random Early Detection (RED) policer in accordance with the invention does not tail-drop arriving packets as being non-conforming. For instance, because the RED policer uses a running estimate such as an exponential weighted moving average (EWMA), for example, it allows the policer to absorb traffic bursts. The policer uses randomization in choosing which packets to drop; with this method, the probability of dropping a packet from a particular sending node is roughly proportional to the node's bandwidth share, hence the packets of different flows are fairly dropped.
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