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Quality of Service (QoS) is a group of technologies that is used to manage network traffic efficiently. In QoS basic mode, a specific domain in a network can be defined as trusted. Within this domain, frames are marked with CoS values and packets are marked with DSCP values to signify what type of service is required. The switch uses these fields to assign the packets to a specific output queue.
This article explains how to configure QoS Basic Mode on the 300 Series Managed Switches.
Step 1. Log in to the web configuration utility and choose Quality of Service > QoS Basic Mode > Global Settings. The Global Settings page opens:
Step 2. Click the radio button that corresponds to the desired QoS trust mode in the Trust Mode field.
The default CoS values are as followed. CoS 7 is the highest priority value while CoS 0 is the lowest.
Step 3. Check Override Ingress DSCP to override the original DSCP values in the ingress packets with the new values. The switch uses new DSCP values for the egress queueing.
Step 4. If Override Ingress DSCP enabled, click DSCP Override Table to reconfigure the DSCP values. The DSCP Override window appears.
Step 5. Configure the DSCP Override Table.
Note: Click Restore Defaults to restore the DSCP override table to the default values. The default is when the DSCP Out values match the values of the corresponding DSCP In values.
Step 6. Click Apply.
Step 1. Log in to the web configuration utility and choose Quality of Service > QoS Basic Mode > Interface Settings. The Interface Settings page opens:
Step 2. From the Interface Type equals to drop-down list choose the type of interfaces to be displayed.
Step 3. Click Go. The specified interfaces are displayed.
Step 4. Click the radio button of the interface you want to edit.
Step 5. Click Edit to configure the interface. The Edit QoS Interface Settings window appears.
Step 6. (Optional) Click the radio button that corresponds to the desired interface you want to edit in the Interface field.
Step 7. Check Enable in the QoS State field to prioritize inbound traffic based on the system wide configured trust mode. If this option is disabled, all inbound traffic on the port is mapped to the best effort queue and no prioritization takes place.
Step 8. Click Apply.
You have now configured QoS basic mode on your 300 series switch.