Alcatel-Lucent 7950 Quality Of Service Manual page 559

Except for the overall cap on the offered input into the virtual scheduler, the child's administrative PIR has
no effect on the calculated increase if an explicit rate is specified.
If the child's administrative PIR is modified while a percent based add is in effect, the system automatically
uses the new relative increase value the next time the child's offered rate is determined.
When the add command is not specified or removed, the child's offered rate used by the child's virtual
scheduler is not increased.
The no form of this command is used to remove an offered rate increase from all child policers and queues
associated with the policy.
Parameters
percent-of-admin-pir — When the percent qualifier is used, this parameter specifies the percentage of the
child's administrative PIR that should be added to the child's offered rate. The new offered rate result is
capped by the child's PIR. If a value of 0 or 0.00 is used, the system interprets this equivalent to no add.
Default
Values
rate-in-kilobits-per-second — When the rate qualifier is used, this parameter specifies an explicit number of
kilobits-per-second (1000 bits-per-second) that should be added to the child's offered rate. The new
offered rate result is capped by the child's PIR. If a rate increase of 0 is specified, the system interprets
this equivalent to no add.
Default
Values
min-only — This optional parameter is used to reinterpret the increase as a minimum offered rate. When
this option is enabled, the system uses the specified increase as a minimum offered rate even for
inactive queues or policers associated with the policy.
active-min-only — When this optional parameter is specified, the respective rate or percentage is treated as
the minimum offered rate for a queue only when the queue has an actual non-zero offered rate. This is
intended to limit the artificial increase in offered rate to queues that are currently active. Once a queue's
measured offered rate drops to zero, the system stops enforcing the minimum value.
granularity
Syntax [no] granularity {percent percent-of-admin-pir | rate rate-in-kilobits-per-second}
Context config>qos>adv-config-policy>child-control>offered-measurement
Description This command is used to adjust the sensitivity of the virtual scheduler to changes in the child offered rate.
As the child offered rate is determined, it is compared to the previous offered rate. If the delta does not
exceed the sensitivity threshold determined for the current offered rate, the change in offered rate is ignored
for that iteration.
While it is assumed that changing the offered rate change sensitivity will be a rare occurrence, one may want
to react to smaller changes in the offered rate of a particular child policer or queue. Another possible reason
for changing the sensitivity is that it may be desired to lower the impact of changes in offered rate on the
virtual scheduler for a particular child by raising the granularity.
A side effect of higher sensitivity (lower granularity) is that the virtual scheduler may need to adjust the
7950 XRS Quality of Service Guide
None, an increase percentage value must be specified when the percent qualifier is used.
1.00 — 100.00
None, an increase rate value must be specified when the rate qualifier is used.
0 — 100,000,000
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