Advanced QoS Policies
Quality of Service Guide 685
fast-start
Syntax [no] fast-start
Context config>qos>adv-config-policy>child-control>offered-measurement
Description This command is used to enable fast detection of initial bandwidth on a child policer or queue
associated with the policy. Multiple offered rate counter reads may be performed per the sampling
interval. The system accumulates these counter values and evaluates the delta at the conclusion of the
sampling interval. When fast-start is enabled, the system identifies all children associated with the
policy that enter the inactive state (current offered rate is zero). Any inactive ‘fast start’ child that has
a positive offered counter during a sampling period bypasses the normal sampling interval and does an
immediate offered rate evaluation.
This option is intended for use with children that would benefit from faster than normal startup
detection, typically those of a real-time nature.
When this parameter is not enabled, the system uses the normal sampling interval behavior of both
newly active and currently active children.
The no form of this command is used to restore the sampling interval based offered rate evaluation for
newly active children.
fast-stop
Syntax [no] fast-stop
Context config>qos>adv-config-policy>child-control>offered-measurement
Description This command is used to enable fast detection of lack of offered rate on a child policer or queue
associated with the policy. Multiple offered rate counter reads may be performed per sampling interval.
The system accumulates these counter values and evaluates the delta at the conclusion of the sampling
interval. When fast-stop is enabled, the system bypasses the sampling interval for any currently active
‘fast stop’ child that has a zero offered counter measurement and does an immediate offered rate
evaluation using the zero value.
This option is intended for use with children where other children would benefit from faster than
normal inactive detection, typically those of a real-time nature.
When this parameter is not enabled, the system uses the normal sampling interval behavior of both
newly inactive and currently active children.
The no form of this command is used to restore the sampling interval based offered rate evaluation for
newly inactive children.
bandwidth-distribution
Syntax offered-measurement
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