Netgear GS728TP User Manual Page 515

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Configuration Examples
515
ProSafe M5300 Switch
IP Service Type octet (also known as: ToS bits, Precedence value, DSCP value)
Layer 4 protocol (TCP, UDP etc.)
Layer 4 source/destination ports
Source/destination IP address
From a DiffServ point of view, there are two types of classes:
DiffServ traffic classes
DiffServ service levels/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 multi-field (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 together 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 (i.e., exclude option) of the referenced
class.
To configure DiffServ, you must define service levels, namely the forwarding classes/PHBs
identified by a given DSCP value, on the egress interface. These service levels are defined
by configuring BA classes for each.
Creating 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.
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