Qos Deficit-Round-Robin - D-Link DGS-6600-48T Cli Reference Manual

DGS-6604 m

qos deficit-round-robin

qos {deficit-round-robin [COS-QUEUE quantum WEIGHT] |weight-round-robin [COS-QUEUE
weight WEIGHT]}
default qos
Syntax Description
deficit-round-robin
weight-round-robin
COS-QUEUE
quantum WEIGHT
weight WEIGHT
Default
Command Mode
Usage Guideline
CLI Reference Guide
Use the qos command in interface configuration mode to enable the Deficit
Round Robin (DRR)/Weighted Round Robin (WRR) packet scheduling
mechanism. To restore the packet scheduling mechanism, use the default form
of this command.
deficit-round-robin in interface configuration mode to enable the Deficit Round
Robin (DRR) packet scheduling mechanism
weight-round-robin in interface configuration mode to enable the weighted
Round Robin (WRR) packet scheduling mechanism
The transmit priority queue; valid value is from 0 to 7.
(Optional) Specifies the Deficit Round Robin (DRR) quantum weight from 0 to
255. The final quantum is 16Kbytes * WEIGHT. The number of zero stands for
strict priority mode.
(Optional) Specifies the WRR weight. The final weight is number of permitted
scheduling packets.Tthe range is 0 ~ 15 and the number of zero stands for strict
priority mode.
Strict priority mode and DRR mode is disabled.
quantum WEIGHT: 1
wrr-WEIGHT: 1
Interface configuration
Only physical port interfaces are valid for this command.
The port CoS queue can be either strict priority mode, deficit round robin
(DRR)mode or Weight round robin (WRR) mode. The strict priority scheduler
mode provides strict priority access to the egress port across the transmit priority
queue from the highest priority index to the lowest. The purpose of the strict
priority scheduler is to provide lower latency service to the higher CoS classes of
traffic.
DRR operates by serving a mount of backlogged credits into the transmit queue
in round robin order. Initially, each queue sets its credit counter to a configurable
quantum value. Every time a packet from a CoS queue is sent, the size of the
packet is subtracted from the corresponding credit counter. When the credit
counter drops below 0, the queue is no longer serviced until its credits are
replenished.
qos deficit-round-robin
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