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.
Figure 8- 4. 802.1p User Priority window
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 Description
Strict
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.
Weight fair
Use the weighted round-robin (WRR) algorithm to handle packets in an even distribution in
priority classes of service.
Click Apply to let your changes take effect.
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