Service Egress and Ingress QoS Policies
Quality of Service Guide 263
For subscribers, the policer control hierarchy is created through the policer-control-policy applied to
the sub-profile used by the subscriber. A unique policer control hierarchy is created for each
subscriber associated with the sub-profile. The QoS policy containing the policer with the parenting
command comes into play through the subscriber sla-profile which references the QoS policy. The
combining of the sub-profile and the sla-profile at the subscriber level provides the system with the
proper information to create the policer control hierarchy instance for the subscriber. This functionality
is available only for the 7450 ESS and 7750 SR.
Executing the parent command will fail if:
• The policer’s stat-mode in the QoS policy is set to no-stats
• A stat-mode no-stats override exists on an instance of the policer on a SAP or subscriber or
multi-service site context
A policer with a parent command applied cannot be configured with stat-mode no-stats in either the
QoS policy or as an override on an instance of the policer
Once a policer is successfully parented to an arbiter, the parent commands level and weight
parameters are used to determine at what priority level and at which weight in the priority level that
the child policer competes with other children (policers or other arbiters) for bandwidth.
The no form of this command is used to remove the parent association from all instances of the policer.
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 root
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 None
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 1
percent-rate
Syntax percent-rate pir-percent [cir cir-percent]
no percent-rate
Context config>qos>sap-egress>policer
To Next Page
Loading...
