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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