2.The default DSCP to CoS/DSCP to Queue mapping table

Input DSCP value

Local precedence (Queue)

CoS

0 to 7

0

0

 

 

 

8 to 15

1

1

 

 

 

16 to 23

2

2

 

 

 

24 to 31

3

3

 

 

 

32 to 39

4

4

 

 

 

40 to 47

5

5

 

 

 

48 to 55

6

6

 

 

 

56 to 63

7

7

 

 

 

 

 

 

NOTE:

In the default DSCP to DSCP mapping table, an input value yields a target value equal to it.

QoS configuration

Configuration task lists

Configuring a QoS policy

A QoS policy defines the shaping, policing, or other QoS actions to take on different classes of traffic. It is a set of class-behavior associations.

A class is a set of match criteria for identifying traffic, and it uses the AND or OR operator:

∙If the operator is AND, a packet must match all the criteria to match the class.

∙If the operator is OR, a packet matches the class if it matches any of the criteria in the class.

A traffic behavior defines a set of QoS actions to take on packets, such as priority marking and redirect.

By associating a traffic behavior with a class in a QoS policy, you apply the specific set of QoS actions to the class of traffic. You can apply a QoS policy to a port to regulate the incoming traffic of the port. A QoS policy can be applied to multiple ports. Only one policy can be applied in inbound direction of a port.

Perform the tasks in 1 to configure a QoS policy:

1.QoS policy configuration task list

Task

Remarks

Configure a class

 

Required

Creating a class

Create a class and specify the operator for

 

the match criteria in the class.

 

 

Configuring match criteria

Required

Configure match criteria for the class.

 

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