AMX NXA-ENET8-2POE Operation/Reference Manual page 140

Configuring the NXA-ENET8-2POE
QoS Egress Port Schedulers parameters (Cont.)
Configuring QoS Egress Port Scheduler, Queue Scheduler and Port Shapers
• Scheduler Mode
• Queue Shaper
• Queue Scheduler
• Port Shaper
1.
Click Configuration, QoS, Port Scheduler.
2.
Click on any enter under the Port field to configure the Port Scheduler and Shaper.
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The switch can be set to service the queues based on a strict rule that requires all
traffic in a higher priority queue to be processed before the lower priority queues
are serviced, or Deficit Weighted Round-Robin (DWRR) queuing which specifies
a scheduling weight for each queue. (Options: Strict, Weighted; Default: Strict)
DWRR services the queues in a manner similar to WRR, but the next queue is
serviced only when the queue's Deficit Counter becomes smaller than the packet
size to be transmitted.
Note that weighted scheduling uses a combination of weighted service for queues
0 - 6, and strict service for the high priority queues 7 and 8.
Controls whether queue shaping is enabled for this queue on this port.
Enable - Enables or disables queue shaping. (Default: Disabled)
Rate - Controls the rate for the queue shaper. The default value is 500. This
value is restricted to 100-1000000 kbps, or 1-3300 Mbps.
Unit - Controls the unit of measure for the queue shaper rate as kbps or Mbps.
(Default: kbps)
Excess - Controls whether the queue is allowed to use excess bandwidth.
(Default: Disabled)
When the Scheduler Mode is set to Weighted, you need to specify a relative
weight for each queue. DWRR 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.
Weight - A weight assigned to each of the queues (and thereby 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. (Range: 1-100; Default:
17)
Percent - The weight as a percentage for this queue.
Sets the rate at which traffic can egress this queue.
Enable - Enables or disables port shaping. (Default: Disabled)
Rate - Controls the rate for the port shaper. The default value is 500. This value
is restricted to 100-1000000 kbps, or 1-3300 Mbps
Unit - Controls the unit of measure for the port shaper rate as kbps or Mbps.
(Default: kbps)
NXA-ENET8-2POE Gigabit Ethernet Layer 2 PoE Switch