Importance

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Abstract

A first discarding device is coupled to a second discarding device. This first discarding device can be a traffic policer or alternatively a network buffer. The second discarding device is a network buffer. A cell stream is supplied to the first discarding device. The system determines if the incoming cells are in accordance with the predetermined criteria and discards this cell, if this cell is not in accordance with the criterion. By discarding cells of a frame, this frame is corrupted and marked with a corrupted frame indicator, by the first discarding device. Afterwards the second discarding device may discard the remaining cells of the marked frame. If the first discarding device is a traffic policer, the traffic policer checks the conformance of the incoming cells according to conformance criterion and alternatively if the first discarding device is a network buffer it checks the conformance of the incoming cells according to some congestion determining criteria.

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First Claim