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This article explain how to map Differentiated Services Code Point (DSCP) to a queue on SFE/SGE Managed Switches. The queue contains the outgoing traffic from the switch. The DSCP to Queue Table determines the queues of the incoming IP packets based on their DSCP values. The DSCP to Queue mapping is applicable to IP packets if the switch is in QoS Basic mode and DSCP is the trusted mode, or the switch is in QoS Advanced mode and the packets belongs to flows that are DSCP trusted.
• SFE/SGE Managed Switches
Map DSCP to Queue
Step 1. Use the configuration utility to choose Quality of Service > General > DSCP to Queue. The DSCP to Queue page opens:
Step 2. Choose the Queue (traffic forwarding queue) to which the DSCP value is mapped from the Queue drop-down list. Differentiated Services Code Point In indicates the value that needs to be remarked to an alternative value for the incoming packet. The values 3, 11, 19, 27, 35, 43, 51, and 59 are reserved. The Queue drop-down list indicates that the packet is forwarding to either queue 1, 2, 3, or 4. This is for the priority of the forwarding queue to which the DSCP is mapped.
Step 3. Click Apply. The running configuration file is updated.
Caution: This only saves your configuration to the running configuration file. This means any changes made will be lost if the device is rebooted. If you wish to save these changes even after a system reboot, you need to copy the running configuration file to the startup configuration file. See Copy Configuration File on SFE/SGE Series Managed Switches for more information on how to do this