Differentiated Services; Defining Diffserv - NETGEAR S3600 Series User Manual

S3600 Series 8- or 16-Port 10G/Multi-Gigabit Ethernet Smart Switch with 2 SFP+ Ports
• Expedited Forwarding (EF) PHB: These values are used to prioritize traffic for
real-time applications. In many situations, if the network exceeded traffic and you
need some bandwidth guaranteed for an application, the EF traffic must receive
this rate independently of the intensity of any other traffic attempting to transit
the node.
• Other DSCP Values (Local/Experimental Use)
7. Select a check box for a DSCP value.
8. From the Queue menu, select the queue from 0 to 7.
9. Click the Apply button.
Your settings are saved.
For each DSCP value, you can select a queue value from the Queue menu.
10. To select and save a queue value for another DSCP value, repeat the previous four
steps.

Differentiated Services

The QoS feature contains Differentiated Services (DiffServ) support that allows traffic to
be classified into streams and given certain QoS treatment in accordance with defined
per-hop behaviors.
Standard IP-based networks provide best-effort data delivery service. Best-effort service
implies that the network delivers the data in a timely fashion, although there is no
guarantee. If congestion occurs, packets might be delayed, sent sporadically, or dropped.
For typical Internet applications, such as email and file transfers, a slight degradation
in service is acceptable and in many cases unnoticeable. However, any degradation of
service can negatively affect applications with strict timing requirements, such as voice
and multimedia.
NOTE: For more information about DiffServ and a configuration example, see
Differentiated Services (DiffServ) on page 575.

Defining DiffServ

To use DiffServ for QoS, you must first define the following categories and their criteria:
Configure Quality of Service 358 User Manual