Netgear gsm7312 사용자 설명서

9-14

Differentiated Services

This command adds to the specified class definition a match condition based on the value of the 
layer 2 VLAN Identifier field of a packet. The 

is the name of an existing DiffServ 

class. The VLAN ID is an integer from 1 to 4094. The optional

parameter has the 

effect of negating this match condition for the class (i.e., match all VLAN Identifier values except 
for what is specified here).

The 'policy' command set is used in DiffServ to define:

Specify traffic conditioning actions (policing, marking, shaping) to apply to 
traffic classes

Specify bandwidth and queue depth management requirements of service levels 
(EF, AF, etc.)

The policy commands are used to associate a traffic class, which was defined by the class 
command set, with one or more QoS policy attributes. This association is then assigned to an 
interface in a particular direction to form a service. The user specifies the policy name when the 
policy is created.

The DiffServ CLI does not necessarily require that users associate only one traffic class to one 
policy. In fact, multiple traffic classes can be associated with a single policy, each defining a 
particular treatment for packets that match the class definition. When a packet satisfies the 
conditions of more than one class, preference is based on the order in which the classes were added 
to the policy, with the foremost class taking highest precedence.

This set of commands consists of policy creation/deletion, class addition/removal, and individual 
policy attributes. Note that the only way to remove an individual policy attribute from a class 
instance within a policy is to remove the class instance and re-add it to the policy. The values 
associated with an existing policy attribute can be changed without removing the class instance.

The CLI command root is 

.