Chapter 7 - Quality of Service
7-1 Global Settings
Use the QoS Global Settings page to set the trust behavior for QoS basic mode.
This configuration is active when the switch is in QoS basic mode. Packets entering
a QoS domain are classified at the edge of the QoS domain.
Web Interface
To configure the Global Settings in the web interface:
1. Click Quality of Service and Global Settings.
2. Select the trust mode when the switch is in QoS basic mode. If a
packet CoS level and DSCP tag are mapped to separate queues, the
trust mode determines the queue to which the packet is assigned.
3. Click Apply to save the configuration.
4. To cancel the setting, click the Reset button to revert to previously saved values.
Figure 7-1: The QoS Global Settings page
Parameter descriptions:
Trust Mode
CoS/802.1p: Traffic is mapped to queues based on the VPT field in the VLAN tag, or based on the
per-port default CoS/802.1p value (if there is no VLAN tag on the incoming packet), the actual
mapping of the VPT to queue can be configured on the CoS/802.1p to Queue page.
DSCP: All IP traffic is mapped to queues based on the DSCP field in the IP header. The actual mapping
of the DSCP to queue can be configured on the DSCP to Queue page. If traffic is not IP traffic, it is
mapped to the best effort queue.
IP Precedence: Traffic is mapped to queues based on the IP precedence. The actual mapping of the IP
precedence to queue can be configured on the IP Precedence to Queue page.
CoS/802.1p-DSCP: Uses the trust CoS mode for non-IP traffic and trust DSCP mode for IP traffic.
Buttons
Apply: Click to save changes.
Reset: Click to undo any changes made locally and revert to previously saved values.
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