Allied Telesis AT-S95 WEB - Manual (Page 200)

Configuring Services
Page 200
Enabling Class of Service (CoS)
The CoS Page enables configuring the CoS ports or trunks on the device.
To configure CoS ports or trunks on the device:
1. Click Services > CoS. The CoS Page opens:
Figure 138:CoS Page
As a default the CoS Page opens displaying the port options. The fields are identical when displaying the trunk
CoS. The CoS Page contains the following fields:
• Enable QoS Mode — Indicates if QoS is enabled on the device. The possible values are:
– Checked — Enables QoS on the device.
– Unchecked — Disables QoS on the device.
• Trust Mode — Defines which packet fields to use for classifying packets entering the device. When no rules
are defined, the traffic containing the predefined packet CoS field is mapped according to the relevant trust
modes table. Traffic not containing a predefined packet field is mapped to best effort. The possible Trust
Mode field values are:
– CoS — Classifies traffic based on the CoS tag value.
– DSCP — Classifies traffic based on the DSCP tag value.
• Select the interfaces displayed in the table.
– Ports of Unit — Specifies the port and stacking member for which the CoS configuration is displayed.
– Trunk — Specifies the trunk for which the CoS configuration is displayed.