QoS Queue Group Template Command Reference
462 Quality of Service Guide
rate
Syntax rate pir-rate [cir cir-rate]
rate pir-rate police
no rate
Context config>qos>qgrpid>ing>qgrp>queue
Description This command defines the administrative Peak Information Rate (PIR) and the administrative
Committed Information Rate (CIR) parameters for the queue. The PIR defines the maximum rate that
the queue can transmit packets through the switch fabric (for SAP ingress queues). Defining a 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. For SAP ingress, the CIR also defines the rate that packets are considered in-profile
by the system. In-profile then out-of-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 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 anytime, altering the PIR and CIR rates for all queues created
through the association of the SAP ingress or 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 none
Parameters pir-rate — Defines the administrative PIR rate, in kilobits, for the queue. When the rate command
is 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 to 2000000000 | max] Kbps
Default max
cir-rate — The cir parameter overrides the default administrative CIR used by the queue. When
the 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.
Values [0 to 2000000000 | max] Kbps
Default 0
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