Cisco Cisco SF302-08PP 8-port 10 100 PoE+ Managed Switch Referencia técnica

Quality of Service (QoS) Commands

763

OL-32830-01 Command Line Interface Reference Guide

39

Use the priority-queue out num-of-queues Global Configuration mode command 
to configure the number of expedite queues. Use the no form of this command to 
restore the default configuration.

priority-queue out num-of-queues 

number-of-queues

no priority-queue out num-of-queues

•

number-of-queues—Specifies the number of expedite (strict priority) 
queues. Expedite queues are assigned to the queues with the higher 
indexes. (Range: 0–8  .There must be either 0 wrr queues or more than one.

If number-of-queues = 0, all queues are assured forwarding (according to 
wrr weights) If the number-of-queues = 8  , all the queues are expedited 
(strict priority queues). 

Note: the maximum number of queues depends on the value set in the set 
system mode command.

All queues are expedite queues.

Global Configuration mode

An expedite queue is a strict priority queue, which is serviced until empty before 
the other lower priority queues are serviced.

the weighted round robin (WRR) weight ratios are affected by the number of 
expedited queues, because there are fewer queues participating in WRR. This 
indicates that the corresponding weight in the wrr-queue bandwidth Interface 
Configuration mode command is ignored (not used in the ratio calculation).