Alcatel-Lucent 7750 SR Manual page 1329

rate
Syntax rate pir-rate [cir cir-rate]
no rate
Context config>service>vprn>if>sap>egress>sched-override>scheduler
config>service>vprn>ipsec-if>sap>egress>sched-override
config>service>vprn>ipsec-if>sap>ingress>sched-override
Description This command can be used to override specific attributes of the specified scheduler rate. The rate
command defines the maximum bandwidth that the scheduler can offer its child queues or schedulers.
The maximum rate is limited to the amount of bandwidth the scheduler can receive from its parent
scheduler. If the scheduler has no parent, the maximum rate is assumed to be the amount available to
the scheduler. When a parent is associated with the scheduler, the CIR parameter provides the amount
of bandwidth to be considered during the parent scheduler's 'within CIR' distribution phase.
The actual operating rate of the scheduler is limited by bandwidth constraints other then its maximum
rate. The scheduler's parent scheduler may not have the available bandwidth to meet the scheduler's
needs or the bandwidth available to the parent scheduler could be allocated to other child schedulers
or child queues on the parent based on higher priority. The children of the scheduler may not need the
maximum rate available to the scheduler due to insufficient offered load or limits to their own
maximum rates.
When a scheduler is defined without specifying a rate, the default rate is max. If the scheduler is a
root scheduler (no parent defined), the default maximum rate must be changed to an explicit value.
Without this explicit value, the scheduler will assume that an infinite amount of bandwidth is
available and allow all child queues and schedulers to operate at their maximum rates.
The no form of this command returns all queues created with this queue-id by association with the
QoS policy to the default PIR and CIR parameters.
Parameters
pir-rate — The pir parameter accepts a step multiplier value that specifies the multiplier used to
7750 SR OS Services Guide
creation of system objects (such as schedulers) while attempting to edit an object with a mistyped
name or ID. The keyword has no effect when the object already exists.
determine the PIR rate at which the queue will operate. A value of 0 to 100000000 or the
keyword max or sum is accepted. Any other value will result in an error without modifying the
current PIR rate.
To calculate the actual PIR rate, the rate described by the queue's rate is multiplied by the pir-
rate.
The SAP ingress context for PIR is independent of the defined forwarding class (fc) for the
queue. The default pir and definable range is identical for each class. The PIR in effect for a
queue defines the maximum rate ate which the queue will be allowed to forward packets in a
given second, thus shaping the queue's output.
The PIR parameter for SAP ingress queues do not have a negate (no) function. To return the
queue's PIR rate to the default value, that value must be specified as the PIR value.
Values 1 — 100000000, max
Default
max
Virtual Private Routed Network Services
Page 1329