20
QoS Mode: DSCP
DSCP: Packets are prioritized using the DSCP (Differentiated Services Code
Point) value. The Differentiated Services Code Point (DSCP) is a six-bit field
that is contained within an IP (TCP or UDP) header. The six bits allow the
DSCP field to take any value in the range 0 - 63. When QoS Mode is set to
DSCP, the DSCP Configuration table is displayed, allowing you to map each of
the DSCP values to a hardware output queue (low, normal, medium or high).
The default settings map all DSCP values to the high priority egress queue.
User can use the Prioritize Traffic drop-down list to quickly set the values in the
DSCP Configuration table to a common priority queue. Use Custom if you
want to set each value individually.
When the QoS Mode is set to DSCP, the DSCP Configuration table is
displayed as shown below.
Figure 2-9-4