NETGEAR M4350-24F4V 24-Port 10G SFP+ Managed AV Network Switch - Manual (Page 916)

The DiffServ feature contains a number of conceptual QoS building blocks that you can
use to construct a differentiated service network. Use these same blocks in different
ways to build other types of QoS architectures.
You must configure three key QoS building blocks for DiffServ:
• Class
• Policy
• Service (the assignment of a policy to a directional interface)
Class
You can classify incoming packets at Layers 2, 3 and 4 by inspecting the following
information for a packet:
• Source/destination MAC address
• EtherType
• Class of Service (802.1p priority) value (first/only VLAN tag)
• VLAN ID range (first/only VLAN tag)
• Secondary 802.1p priority value (second/inner VLAN tag)
• Secondary VLAN ID range (second/inner VLAN tag)
• IP Service Type octet (also known as: ToS bits, Precedence value, DSCP value)
• Layer 4 protocol (TCP, UDP and so on)
• 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 behavior aggregate (BA) classifiers (DSCP) and a wide variety of multi-field
(MF) classifiers:
• Layer 2; Layers 3, 4 (IP only)
• Protocol-based
• Address-based
Main User Manual 916 Configuration Examples
Fully Managed Switches M4350 Series Main User Manual