Netgear GS752TP GS728TP/GS728TPP/GS752TP Software Administration Manual - Page 260

GS752TP, GS728TP, and GS728TPP Gigabit Smart Switches • 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 Policy Traffic conditioning pertains to actions performed on incoming traffic. Several distinct QoS actions are associated with traffic conditioning: Configuration Examples 260