Alcatel-Lucent 7950 Quality Of Service Manual page 198

Service Ingress QoS Policy Commands
Parameters {root | arbiter-name} — When the parent command is executed, either the keyword root or an arbiter-
name must be specified.
root — The root keyword specifies that the policer is intended to become a child to the root arbiter where
an instance of the policer is created. If the root arbiter does not exist, the policer will be placed in the
orphan state.
Default
arbiter-name — The arbiter-name parameter specifies that the policer is intended to become a child to one
of the tiered arbiters with the given arbiter-name where an instance of the policer is created. If the
specified arbiter-name does not exist, the policer will be placed in the orphan state.
Default
weight weight-within-level — The weight weight-within-level keyword and parameter are optional when
executing the parent command. When weight is not specified, a default level of 1 is used in the parent
arbiters priority level. When weight is specified, the weight-within-level parameter must be specified as
an integer value from 1 through 100.
Default
percent-rate
Syntax percent-rate pir-percent [cir cir-percent]
no percent-rate
Context config>qos>sap-egress>policer
config>qos>sap-ingress>policer
Description
The percent-rate command within the SAP ingress and egress QOS policy enables supports for a policer's
PIR and CIR rate to be configured as a percentage of the immediate parent root policer/arbiter rate or the FP
capacity.
This enables the same QOS policy to be used on SAPs on different FPs without needing to use SAP based
policer overrides to modify a policer's rate to get the same relative performance from the policer.
If the parent arbiter rate changes after the policer is created, the policer's PIR and CIR rates will be
recalculated based on the defined percentage value.
The rate and percent-rate commands override one another. If the current rate for a policer is defined using
the percent-rate command and the rate command is executed, the percent-rate values are deleted. In a similar
fashion, the percent-rate command causes any rate command values to be deleted. A policer's rate may
dynamically be changed back and forth from a percentage to an explicit rate at anytime.
The no form of this command returns the queue to its default shaping rate and cir rate.
Parameters
pir-percent — Specifies the policer's PIR as a percentage of the immediate parent root policer/arbiter rate or
the FP capacity.
Values
Default
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root
None
1
Percentage ranging from 0.01 to 100.00.
100.00
7950 XRS Quality of Service Guide