Mapping DSCP to Queue

The DSCP (IP Differentiated Services Code Point) to Queue page maps DSCP to egress queues. The DSCP to Queue Table determines the egress queues of the incoming IP packets based on their DSCP values. The original VPT (VLAN Priority Tag) of the packet is unchanged.

By simply changing the DSCP to Queue mapping and the Queue schedule method and bandwidth allocation, it is possible to achieve the desired quality of services in a network.

The DSCP to Queue mapping is applicable to IP packets if:

Non-IP packets are always classified to the best-effort queue

To map DSCP to queues:

  1. Click Quality of Service > General > DSCP to Queue. The DSCP to Queue page opens.
  2. The DSCP to Queue page contains Ingress DSCP. It displays the DSCP value in the incoming packet and its associated class.

  3. Select the Output Queue (traffic forwarding queue) to which the DSCP value is mapped.
  4. Click Apply. The Running Configuration file is updated.