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1Open the CoS Settings page.
2Select Enable in the CoS Mode field.
3Click Apply Changes.
Class of Service is enabled on the device.
Selecting Trust:
1Open the CoS Settings page.
2Select Trust in the Trust Mode field.
3Click Apply Changes. Trust is selected.
Defining QoS Interface Settings
The Interface Settings page contains fields for defining, per interface, if the selected Trust mode is to be activated. The default priority for incoming untagged packets is also selected in the Interface Settings page. To open the Interface Settings page, click Quality of Service → CoS Global Parameters→ Interface Settings in the tree view.
Figure 9-2. Interface Settings
•Interface — The specific port or LAG to configure.
•Disable "Trust" Mode on Interface — Disables the Trust mode on the specified interface. This setting overrides the Trust mode configured on the device globally.
•Set Default CoS For Incoming Traffic To — Sets the default CoS value . The CoS tag values are