Dell Networking N4000 Series User Manual

1310 Configuring Differentiated Services
DiffServ for VoIP
One of the most valuable uses of DiffServ is to support Voice over IP (VoIP).
VoIP traffic is inherently time-sensitive: for a network to provide acceptable
service, a guaranteed transmission rate is vital. This example shows one way
to provide the necessary quality of service: how to set up a class for UDP
traffic, have that traffic marked on the inbound side, and then expedite the
traffic on the outbound side. The configuration script is for Router 1 in the
accompanying diagram: a similar script should be applied to Router 2.
Figure 40-18. DiffServ VoIP Example Network Diagram
Internet
`
`
Layer 3 Switch
Operating as
Router 1
Layer 3 Switch
Operating as
Router 2
Port 1/0/2
Port 1/0/3

Dell Networking N4000 Series Specifications

General

Brand	Dell
Model	Networking N4000 Series
Category	Switch
Language	English