User`s manual

Quality of Service
Web version
The Switch is already set to automatically read the 802.1p priority bits in incoming packets, map these priorities
to default traffic classes and place priority-tagged packets in traffic class queues for priority servicing.
Important:
You do not need to configure QoS, but you can change the Switch defaults if desired.
●
By default, the Switch is set to:
read the priority value of all incoming packets and forward packets across the switching fabric in
priority order
❍
add a priority of 0 to all incoming untagged packets❍
place all outgoing packets in one of four traffic classes based on the packet's priority value❍
●
The Web version identifies traffic classes only by names. The names correspond to traffic class values
0-3.
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The Command Line version controls these settings; they cannot be changed using the Web version:
priority tag of incoming tagged packets
❍
traffic class name❍
queue sizes❍
●
Changing the QoS default settings
Select Quality of Service from the Main Menu to display this screen:
Untagged Packet Priority displays all Switch ports color-coded to show the priority tag the Switch adds
to all untagged packets received on that port. The default is 0.
Traffic Class Mapping shows the Switch's mapping of the priority levels to outgoing traffic class queues,
the number of the priority level, the color key for that priority and the name of the traffic class.
1.
To set the value of the priority tag to be set in untagged packets, select one or more ports. Edit Settings
and select a value from the Priority Level pulldown menu. Click on Apply.
2.
To change the mapping of priority levels to traffic classes, select a name from the pulldown menu under3.
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