User's Manual

476
Table 149 Default DSCP to Queue mapping table
In
p
ut DSCP value Local
p
recedence (Queue)
0 to 7 0
8 to 15 1
16 to 23 2
24 to 31 3
32 to 39 4
40 to 47 5
48 to 55 6
56 to 63 7
Configuration guidelines
When an ACL is referenced by a QoS policy for traffic classification, the action (permit or deny) in the
ACL is ignored, and the actions in the associated traffic behavior are performed.
Recommended QoS configuration procedures
Recommended QoS policy configuration procedure
A QoS policy involves the following components: class, traffic behavior, and policy. You can associate a
class with a traffic behavior using a QoS policy.
1. Class
Classes identify traffic.
A class is identified by a class name and contains some match criteria.
You can define a set of match criteria to classify packets. The relationship between criteria can be
and or or.
{ and—The device considers a packet belongs to a class only when the packet matches all the
criteria in the class.
{ or—The device considers a packet belongs to a class as long as the packet matches one of the
criteria in the class.
2. Traffic behavior
A traffic behavior, identified by a name, defines a set of QoS actions for packets.
3. Policy
You can apply a QoS policy to a port. A QoS policy can be applied to only the inbound direction
of one port.
Perform the tasks in Table 150 to c
onfigure a QoS policy: