Digisol DG-GS4826S Management Manual page 243

WRR queuing specifies a relative weight for each queue. WRR uses a
u
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.
If "Strict and WRR" mode is selected, a combination of strict service is
u
used for the high priority queues and weighted service for the
remaining queues. The queues assigned to use strict priority should be
specified using the Strict Mode field parameter.
A weight can be assigned to each of the weighted queues (and thereby
u
to the corresponding traffic priorities). This weight sets the frequency
at which each queue is polled for service, and subsequently affects the
response time for software applications assigned a specific priority
value.
Service time is shared at the egress ports by defining scheduling
weights for WRR, or one of the queuing modes that use a combination
of strict and weighted queuing.
P
ARAMETERS
These parameters are displayed in the web interface:
Interface – Displays a list of ports or trunks.
u
Queue Mode
u
Strict – Services the egress queues in sequential order,
n
transmitting all traffic in the higher priority queues before servicing
lower priority queues. This ensures that the highest priority packets
are always serviced first, ahead of all other traffic.
WRR – Weighted Round-Robin shares bandwidth at the egress
n
ports by using scheduling weights, and servicing each queue in a
round-robin fashion. This is the default selection.
Strict and WRR – Uses strict priority on the high-priority queues
n
and WRR on the remaining queues.
Queue ID – The ID of the priority queue. (Range: 0-7)
u
Strict Mode – If "Strict and WRR" is selected, then a combination of
u
strict service is used for the high priority queues and weighted service
for the remaining queues. Use this parameter to specify the queues
assigned to use strict priority. (Default: Disabled)
Weight – Sets a weight for each queue which is used by the WRR
u
scheduler. (Range: 1-15; Default: Weights 1, 2, 4, 6, 8, 10, 12, 14 are
assigned to queues 0 - 7 respectively)
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C 11 | Class of Service
HAPTER
Layer 2 Queue Settings