User manual

Chapter 4: Configuring Quality of Service | 127
GS108T and GS110TP Smart Switch Software Administration Manual
To configure global CoS settings:
1. Select the Global radio button to configure the trust mode settings that apply to all
interfaces.
Alternatively, you can select the Interface radio button to apply trust mode settings to
individual interfaces. The per-interface setting overrides the global settings.
2. Select the trust mode for all interfaces (Global Trust Mode) or the selected interface
(Interface Trust Mode). This setting determines the type of CoS marking to trust when the
frame enters the port.
• Untrusted. Do not trust any CoS packet marking at ingress.
• 802.1p. The eight priority tags that are specified in IEEE 802.1p are p0 to p7. The
QoS setting lets you map each of the eight priority levels to one of four internal
hardware priority queues: High, Normal, Low, and Lowest.
• DSCP. The six most significant bits of the DiffServ field are called the Differentiated
Services Code Point (DSCP) bits.
3. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
4. If you change any of the settings on the page, click Apply to send the updated configuration
to the switch.