D-Link DXS-1100-10TS User Manual - Page 95

QoS > Basic Settings > Queue Settings, and Weighted Round-Robin

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4 Configuration D-Link 10 Gigabit Ethernet Switch User Manual Figure 4.126 - QoS > Basic Settings > Port Scheduler Method The fields that can be configured are described below: From Port / To Port: Select the appropriate port range used for the configuration here. Scheduler Method: Select the scheduler method that will be applied to the specified port(s). Options to choose from are Strict Priority (SP), and Weighted Round-Robin (WRR). By default, the output queue scheduling algorithm is WRR. SP - To set a CoS queue in the SP mode, any higher priority CoS queue must also be in the strict priority mode. WRR - WRR operates by transmitting permitted packets into the transmit queue in a round robin order. Initially, each queue sets its weight to a configurable weighting. Every time a packet from a higher priority CoS queue is sent, the corresponding weight is subtracted by 1 and the packet in the next lower CoS queue will be serviced. When the weight of a CoS queue reaches zero, the queue will not be serviced until its weight is replenished. When weights of all CoS queues reach 0, the weights get replenished at a time. Click Apply to accept the changes made. QoS > Basic Settings > Queue Settings This window is used to view and configure the queue settings. 88

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4 Configuration
D-Link 10 Gigabit Ethernet Switch User Manual
88
Figure 4.126 – QoS > Basic Settings > Port Scheduler Method
The fields that can be configured are described below:
From Port / To Port:
Select the appropriate port range used for the configuration here.
Scheduler Method:
Select the scheduler method that will be applied to the specified port(s). Options to
choose from are Strict Priority (
SP
), and Weighted Round-Robin (
WRR
). By default, the output queue
scheduling algorithm is
WRR
.
SP -
To set a CoS queue in the
SP
mode, any higher priority CoS queue must also be in the strict
priority mode.
WRR - WRR
operates by transmitting permitted packets into the transmit queue in a round robin
order. Initially, each queue sets its weight to a configurable weighting. Every time a packet from a
higher priority CoS queue is sent, the corresponding weight is subtracted by 1 and the packet in the
next lower CoS queue will be serviced. When the weight of a CoS queue reaches zero, the queue
will not be serviced until its weight is replenished. When weights of all CoS queues reach 0, the
weights get replenished at a time.
Click
Apply
to accept the changes made.
QoS > Basic Settings > Queue Settings
This window is used to view and configure the queue settings.