Fortinet MR1 - Manual (Page 256)

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Syntax
Diffserv
Command Mode
Global Config
5.12.1.2 no diffserv
This command sets the DiffServ operational mode to inactive. While disabled, the DiffServ
configuration is retained and can be changed, but it is not activated. When enabled, Diffserv
services are activated.
Syntax
no diffserv
Command Mode
Global Config
5.12.2 Class Commands
The 'class' command set is used in DiffServ to define:
Traffic Classification specifies Behavior Aggregate (BA) based on DSCP, and Multi- Field (MF) classes
of traffic (name, match criteria)
Service Levels specifies the BA forwarding classes / service levels. Conceptually, DiffServ is a two-level
hierarchy of classes: 1. Service/PHB, 2. Traffic Class
This set of commands consists of class creation/deletion and matching, with the class match
commands specifying layer 3, layer 2, and general match criteria. The class match criteria
are also known as class rules, with a class definition consisting of one or more rules to
identify the traffic belonging to the class. Note that once a class match criterion is created for
a class, it cannot be changed or deleted - the entire class must be deleted and re-created.
The CLI command root is class-map.