FS728TP Smart Switch Software Administration Manual
5-10 Configuring QoS
v1.1, September 2009
DSCP to Queue Mapping
The DSCP To Queue Mapping screen contains fields for mapping DSCP values to traffic queues
for various PHBs (Per-Hop Behaviors). These include the CS (Class Selector), AF (Assured
Forwarding) and EF (Expedited Forwarding). For example, a packet with a DSCP tag value of 1
can be assigned to the High queue.
To map DSCP values to queues:
1. Click QoS > CoS> Advanced > DSCP To Queue Mapping. The DSCP To Queue Mapping
screen displays:
The DSCP To Queue Mapping screen contains the following fields:
DSCP to Queue Mapping
•DSCP In – Displays the incoming packet’s DSCP value. The following DSCP In values
are predefined: 3, 11, 19, 27, 35, 43, 51, 59.
•Queue – Select the traffic-forwarding queue to which the DSCP is mapped. Four traffic
priority queues are supported (Lowest, Low, Normal and High). The High Queue is
reserved for special traffic and is not recommended for use.
Restore Default Mapping
Figure 5-6