KB.15.15

Figure 91 Traffic class-based configuration model

Creating a traffic class

In the traffic class-based configuration model, you use match criteria to create a class of IPv4 or

IPv6 traffic and select the packets you want to manage. In a traffic class configuration, match

criteria consist of match and ignore commands. These commands determine the packets that

belong to a class. (Match/ignore criteria are modelled on the permit/deny criteria used in ACLs.)

The traffic classes you configure can be used later in the service policies you create for different

software features, such as QoS and port mirroring. The match criteria used in match/ignore

statements are the same across software features.

Using match criteria

To identify the packets that belong to a traffic class for further processing by policy actions, use

match and ignore commands in a class configuration:

match commands Define the values that header fields must contain for a packet to belong

to the class and be managed by policy actions.

ignore commands Define the values which, if contained in header fields, exclude a packet

from the policy actions configured for the class. An ignored packet is

transmitted without having a policy action performed on it.

The switch compares match/ignore statements to the values in packet fields. It compares the

specified criteria in the sequential order in which the statements are entered in the class, until a

372 Classifier-based software configuration