Alcatel-Lucent 7950 Quality Of Service Manual page 49

Extensible routing system

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3. Section C is (max-avg, max-prob) to (max-avg, 1). This part of the slope describes the instan-

taneous increase of packet discard probability from max-prob to one. A packet discard prob-

ability of 1 results in an automatic discard of the packet.

4. Section D is (max-avg, 1) to (100%, 1). On this part of the slope, the shared buffer average

utilization value of max-avg to 100% results in a packet discard probability of 1.

Plotting any value of shared buffer average utilization will result in a value for packet discard

probability from 0 to 1. Changing the values for start-avg, max-avg and max-prob allows the

adaptation of the RED slope to the needs of the access or network queues using the shared portion

of the buffer pool, including disabling the RED slope.

7950 XRS Quality of Service Guide

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