Alcatel-Lucent 7750 SR OS Service Manual page 86

Global Service Configuration Commands
cir cir-rate — The cir parameter accepts a step-multiplier value that specifies the multiplier used to
scheduler
Syntax [no] scheduler scheduler-name
Context config>service>customer>multi-service-site>ingress>sched-override
config>service>customer>multi-service-site>egress>sched-override
Description
This command can be used to override specific attributes of the specified scheduler name.
A scheduler defines bandwidth controls that limit each child (other schedulers and queues) associated
with the scheduler. Scheduler objects are created within the hierarchical tiers of the policy. It is
assumed that each scheduler created will have queues or other schedulers defined as child
associations. The scheduler can be a child (take bandwidth from a scheduler in a higher tier, except
for schedulers created in tier 1). A total of 32 schedulers can be created within a single scheduler
policy with no restriction on the distribution between the tiers.
Each scheduler must have a unique name within the context of the scheduler policy; however the
same name can be reused in multiple scheduler policies. If scheduler-name already exists within the
policy tier level (regardless of the inclusion of the keyword create), the context changes to that
scheduler name for the purpose of editing the scheduler parameters. Modifications made to an
existing scheduler are executed on all instantiated schedulers created through association with the
policy of the edited scheduler. This can cause queues or schedulers to become orphaned (invalid
parent association) and adversely affect the ability of the system to enforce service level agreements
(SLAs).
If the scheduler-name exists within the policy on a different tier (regardless of the inclusion of the
keyword create), an error occurs and the current CLI context will not change.
Page 86
queue defines the maximum rate at 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
queues PIR rate to the default value, that value must be specified as the PIR value.
Values
1 — 100000000, max
Default
max
determine the CIR rate at which the queue will operate. A value of 0 to 250 or the keyword max
is accepted. Any other value will result in an error without modifying the current CIR rate.
To calculate the actual CIR rate, the rate described by the rate pir pir-rate is multiplied by the cir
cir-rate. If the cir is set to max, then the CIR rate is set to infinity.
The SAP ingress context for CIR is dependent on the defined forwarding class (fc) for the queue.
The default CIR and definable range is different for each class. The CIR in effect for a queue
defines both its profile (in or out) marking level as well as the relative importance compared to
other queues for scheduling purposes during congestion periods.
Values
0 — 10000000, max, sum
Default
sum
7750 SR OS Services Guide