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queue-mode
Syntax
[no] queue-mode queue-mode
Context
config>qos>network-queue
config>qos>sap-egress
Description
The queue-mode determines whether the queue operates in strict or weighted mode.
The no form of the command is associates the default queue mode to weighted.
Default
weighted
Parameters
strict — If a queue is configured in strict mode, the scheduler schedules the queue in order of their priority
in the 2 passes, the CIR loop and the PIR loop. For more information, see
weighted — If a queue is configured in weighted mode, then the scheduler examines these queues in 2
passes - CIR loop and a PIR loop. In the CIR loop, it distributes the available bandwidth to all the strict
and then weighted queues in round-robin up to the configured CIR rate. It examines the weighted
queues in the PIR loop, after examining all the strict queues and distributes the available bandwidth, if
any, in the proportion of the configured weights. For more information, see
rate
Syntax
rate cir cir-rate-in-kbps [pir pir-rate-in-kbps]
no rate
Context
config>qos>sap-egress>queue
config>qos>sap-ingress>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 port. 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.
The rate command can be executed at anytime, altering the PIR and CIR rates for all queues
created on the access ports.
NOTE: Queues with cir-level value set to 8 are treated differently by the software than other
queues configured with different cir-level values. The PIR rate values configured for the cir-level 8
queues are ignored by software. Only CIR rate value is used and PIR is set to CIR value. In
addition, when executing the no form of the rate command for a queue configured at cir-level 8,
the default CIR (and PIR) value is set 1. Please read the cir-level description under port-parent CLI
command description for more information about the scheduler behavior for queues configured
with cir-level value of 8.
7210 SAS-X and 7210 SAS-R6 OS Quality of Service Guide
Scheduling on page
356.
Scheduling on page
356.
Page 341
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