Linksys SRW224G4P - Manual (Page 36)

Chapter Configuring the Switch
2 24-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet
Port to CoS
Modify the default priority for any interface using the text
field provided .
Port Displays the port number .
Default CoS (0-) The priority that is assigned to
untagged frames received on the interface . (Range: 0-7,
where 7 is the highest priority)
LAG Indicates if ports are members of a LAG . To configure
the default priority for LAGs, go to the table entry for the
LAG number, which is listed after ports Gig 1 and Gig 2 at
the end of the table .
Default settings can be restored using the Restore
Defaults button .
Click Save Settngs to save the changes .
QoS > Queue Settings
QoS > Queue Settings
The Switch prioritizes each packet based on the required
level of service, using four priority queues with strict or
Weighted Round Robin Queuing . It uses IEEE 802 .1p and
802 .1Q tags to prioritize incoming traffic based on input
from the end-station application . These functions can be
used to provide independent priorities for delay-sensitive
data and best-effort data .
Queue Settings
You can set the Switch to service the queues based on
a strict rule that requires all traffic in a higher priority
queue to be processed before lower priority queues are
serviced, or use Weighted Round-Robin (WRR) queuing
that specifies a relative weight of each queue . WRR uses a
predefined relative weight for each queue that determines
the percentage of service time the Switch services each
queue before moving on to the next queue . This prevents
the head-of-line blocking that can occur with strict priority
queuing .
Strct Prorty Services the egress queues in sequential
order, transmitting all traffic in the higher priority
queues before servicing lower priority queues .
WRR Weighted Round-Robin shares bandwidth at the
egress ports by using scheduling weights 1, 2, 4, 8 for
queues 0 through 3 respectively .
Set the Queue Mode to Strct or WRR using the Queue
Mode drop-down menu then click Save Settings
Queue Scheduling
The Switch uses the Weighted Round Robin (WRR)
algorithm to determine the frequency at which it services
each priority queue . A weight is assigned to each of
these queues (and thereby to the corresponding traffic
priorities) . This weight sets the frequency at which each
queue will be polled for service, and subsequently affects
the response time for software applications assigned a
specific priority value .
The queue weighting is fixed for the Switch and cannot
be configured .
QoS > DSCP Settings
QoS > DSCP Settings
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