Alcatel-Lucent 7750 SR Manual page 1327

PIR does not necessarily guarantee that the queue can transmit at the intended rate. The actual rate
sustained by the queue can be limited by oversubscription factors or available egress bandwidth.
The CIR defines the rate at which the system prioritizes the queue over other queues competing for
the same bandwidth. In-profile packets are preferentially queued by the system at egress and at
subsequent next hop nodes where the packet can traverse. To be properly handled as in- or out-of-
profile throughout the network, the packets must be marked accordingly for profiling at each hop.
The CIR can be used by the queue's parent commands cir-level and cir-weight parameters to define
the amount of bandwidth considered to be committed for the child queue during bandwidth allocation
by the parent scheduler.
The rate command can be executed at any time, altering the PIR and CIR rates for all queues created
through the association of the SAP egress QoS policy with the queue-id.
The no form of the command returns all queues created with the queue-id by association with the
QoS policy to the default PIR and CIR parameters (max, 0).
Default
rate max cir 0 — The max default specifies the amount of bandwidth in kilobits per second
Parameters pir-rate — Defines the administrative PIR rate, in kilobits, for the queue. When the rate command is
cir-rate — The cir parameter overrides the default administrative CIR used by the queue. When the
scheduler-override
Syntax [no] scheduler-override
Context config>service>vprn>if>sap>egress
config>service>vprn>if>sap>ingress
config>service>vprn>ipsec-if>sap>egress
config>service>vprn>ipsec-if>sap>ingress
Description This command specifies the set of attributes whose values have been overridden via management on
this virtual scheduler. Clearing a given flag will return the corresponding overridden attribute to the
value defined on the SAP's ingress scheduler policy.
7750 SR OS Services Guide
(thousand bits per second). The max value is mutually exclusive to the pir-rate value.
executed, a valid PIR setting must be explicitly defined. When the rate command has not been
executed, the default PIR of max is assumed.
Fractional values are not allowed and must be given as a positive integer.
The actual PIR rate is dependent on the queue's adaptation-rule parameters and the actual
hardware where the queue is provisioned.
Values
1 — 100000000
Default max
rate command is executed, a CIR setting is optional. When the rate command has not been
executed or the cir parameter is not explicitly specified, the default CIR (0) is assumed.
Fractional values are not allowed and must be given as a positive integer. The sum keyword
specifies that the CIR be used as the summed CIR values of the children schedulers or queues.
Values 0 — 100000000, max, sum
Default 0
Virtual Private Routed Network Services
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