Alcatel-Lucent 7950 Quality Of Service Manual page 540

RED Slope Commands
RED Slope Commands
max-avg
Syntax max-avg percent
no max-avg
Context config>qos>slope-policy>high-slope
config>qos>slope-policy>low-slope
Description Sets the low priority or high priority Random Early Detection (RED) slope position for the shared
buffer average utilization value where the packet discard probability rises directly to one. The
percent parameter is expressed as a percentage of the shared buffer size.
The no form of this command restores the max-avg value to the default setting. If the current
start-avg setting is larger than the default, an error will occur and the max-avg setting will not be
changed to the default.
Default
max-avg 90 — High slope default is 90% buffer utilization before discard probability is 1.
max-avg 75 — Low slope default is 75% buffer utilization before discard probability is 1.
Parameters
percent — The percentage of the shared buffer space for the buffer pool at which point the drop probability
becomes 1. The value entered must be greater or equal to the current setting of start-avg. If the entered
value is smaller than the current value of start-avg, an error will occur and no change will take place.
Values
max-prob
Syntax max-prob percent
no max-prob
Context config>qos>slope-policy>high-slope
config>qos>slope-policy>low-slope
Description
Sets the low priority or high priority Random Early Detection (RED) slope position for the
maximum non-one packet discard probability value before the packet discard probability rises
directly to one. The percent parameter is expressed as a percentage of packet discard probability
where always discard is a probability of 1. A max-prob value of 80 represents 80% of 1, or a
packet discard probability of 0.8.
The no form of this command restores the max-prob value to the default setting.
Default max-prob 80 — 80% maximum drop probability corresponding to the max-avg.
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7950 XRS Quality of Service Guide