Chapter 5
Packet Classification and Labelling
E-NIT-CTC-20041213-0013v0.5 39
DSCP When using DSCP the QoS definition is narrowed down to 21 values. This is the
most common value used to define QoS. This definition is also backwards compatible
with TOS and Precedence.
DSCP values Description
ef|af11|af12|af13|af2
1|af22|af23|af31|af32
|af33|af41|af42|af43|
cs0|cs1|cs2|cs3|cs4|
cs5|cs6|cs7
These are the values that can be used to define the
service class by DSCP.
Example: EF = Expedited forwarding or Real time.
number 0..63 A decimal value can also be used to define the service
class.