NETGEAR M4350-24F4V 24-Port 10G SFP+ Managed AV Network Switch - Manual (Page 917)

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 (
exclude option)
of the referenced class.
To configure DiffServ, you must define service levels, namely the forwarding
classes/per-hop behaviors (PHBs) identified by a DSCP value, on the egress interface.
You define these 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:
• Dropping: Drop a packet upon arrival. This is useful for emulating access control
list operation using DiffServ, especially when DiffServ and ACL cannot coexist on
the same interface.
• Marking IP DSCP or IP precedence: Marking/re-marking the DiffServ code point
in a packet with the DSCP value representing the service level associated with a
particular DiffServ traffic class. Alternatively, the IP Precedence value of the packet
can be marked/re-marked.
• Marking CoS (802.1p): Sets the three-bit priority field in the first/only 802.1p header
to a specified value when packets are transmitted for the traffic class. An 802.1p
header is inserted if it does not already exist. This is useful for assigning a Layer 2
priority level based on a DiffServ forwarding class (such as the DSCP or IP precedence
value) definition to convey some QoS characteristics to downstream switches that
do not routinely look at the DSCP value in the IP header.
• Policing: A method of constraining incoming traffic associated with a particular class
so that it conforms to the terms of the TCS. Special treatment can be applied to
Main User Manual 917 Configuration Examples
Fully Managed Switches M4350 Series Main User Manual