Alcatel-Lucent 7450 Quality Of Service Manual page 634

Slope QoS Policy Command Reference
Description This command sets a weighting factor to calculate the new shared buffer average utilization after
assigning buffers for a packet entering a queue. To derive the new shared buffer average utilization,
the buffer pool takes a portion of the previous shared buffer average and adds it to the inverse portion
of the instantaneous shared buffer utilization.
The time-average-factor command sets the weighting factor between the old shared buffer average
utilization and the current shared buffer instantaneous utilization when calculating the new shared
buffer average utilization
The TAF value applies to all high and low priority RED slopes for ingress and egress access buffer
pools controlled by the slope policy.
The no form of this command restores the default setting.
Default 7 - Weighting instantaneous shared buffer utilization is 0.8%.
Parameters value — Represents the Time Average Factor (TAF), expressed as a decimal integer. The value
Slope Policy QoS Policy Commands
exceed-slope
Syntax [no] exceed-slope
Context config>qos>slope-policy
Description The exceed-slope context contains the commands and parameters for defining the exceed Random
Early Detection (RED) slope graph. Each egress buffer pool supports an exceed RED slope for
managing access to the shared portion of the buffer pool for exceed-profile packets.
The exceed-slope parameters can be changed at any time and the affected buffer pool exceed RED
slopes are adjusted appropriately.
The no form of this command restores the exceed slope configuration commands to the default values.
If the leaf commands within exceed-slope are set to the default parameters, the exceed-slope node will
not appear in save config and show config output unless the detail parameter is present.
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specified for TAF affects the speed at which the shared buffer average utilization tracks the
instantaneous shared buffer utilization. A low value weights the new shared buffer average
utilization calculation more to the shared buffer instantaneous utilization, zero using it
exclusively. A high value weights the new shared buffer average utilization calculation more
to the previous shared buffer average utilization value.
Values
0 to 15
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