Netgear GS728TPP 사용자 설명서

Layer 4 protocol (such as TCP or UDP)

Layer 4 source and destination ports

Source and destination IP addresses

From a DiffServ point of view, there are two types of classes:

DiffServ traffic classes

DiffServ service levels or forwarding classes

DiffServ Traffic Classes

With DiffServ, you define which traffic classes to track on an ingress interface. You can define 
simple BA classifiers (DSCP) and a wide variety of multifield (MF) classifiers:

Layer 2; Layers 3, 4 (IP only)

Protocol-based

Address-based

You can combine these classifiers with logical AND or OR operations to build complex 
MF-classifiers (by specifying a class type of all or any, respectively). That is, within a single 
class, multiple match criteria are grouped as an AND expression or a sequential OR 
expression, depending on the defined class type. Only classes of the same type can be 
nested; class nesting does not allow for the negation (that is, exclude option) of the 
referenced class.

To configure DiffServ, you must define service levels, namely the forwarding classes, or 
PHBs identified by a given DSCP value, on the egress interface. You define the service 
levels by configuring BA classes for each.

Create Policies

Use DiffServ policies to associate a collection of classes that you configure with one or more 
QoS policy statements. The result of this association is referred to as a policy. 

From a DiffServ perspective, there are two types of policies:

Traffic Conditioning Policy. A policy applied to a DiffServ traffic class

Service Provisioning Policy. A policy applied to a DiffServ service level

You must manually configure the various statements and rules used in the traffic conditioning 
and service provisioning policies to achieve the desired Traffic Conditioning Specification 
(TCS) and the Service Level Specification (SLS) operation, respectively. 

Traffic conditioning pertains to actions performed on incoming traffic. Several distinct QoS 
actions are associated with traffic conditioning: