802.1P User Priority; Cos Scheduling Mechanism - D-Link DES-3010F Manual

DES-3010F/DES-3010FL/DES-3010G/DES-3018/DES-3026 Fast Ethernet Switch Manual

802.1p User Priority

The Switch allows the assignment of a class of service to each of the 802.1p priorities. In the CoS folder, click 802.1p
User Priority to view the screen shown below.
Once you have assigned a priority to the port groups on the Switch, you can then assign this Class to each of the four levels
of 802.1p priorities. Click Apply to set your changes.

CoS Scheduling Mechanism

This drop-down menu allows you to select between a Weight Fair and a Strict mechanism for emptying the priority
classes. In the CoS folder, click CoS Scheduling Mechanism, to view the screen shown below.
Figure 8- 5. CoS Scheduling Mechanism and CoS Scheduling Mechanism Table window
NOTICE: The default CoS scheduling arrangement is a strict priority schedule for the
highest class (Class-3) which means the Switch will consider the highest class of service
to have strict scheduling only, while the other queues empty in a round-robin method.
The Scheduling Mechanism has the following parameters.
Parameter
Strict
Weight fair
Click Apply to let your changes take effect.
Figure 8- 4. 802.1p User Priority window
Description
Denoting a Strict scheduling will set the highest queue to be emptied first while the
other queues will follow the weighted round-robin scheduling scheme.
Use the weighted round-robin (WRR) algorithm to handle packets in an even
distribution in priority classes of service.
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