Netgear GSM7212P GSM5212P/GSM7212P/GSM7212F/GSM7224P Administration Manual - Page 190

ProSafe Managed Switch 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. Port 1/0/2 Port 1/0/3 Layer 3 switch operating as Router 1 Internet Layer 3 switch operating as Router 2 Figure 21. Diffserv for VoIP in Router 1 The example is shown as CLI commands and as a Web interface procedure. CLI: Configure DiffServ for VoIP 1. Enter Global configuration mode. Set queue 5 on all ports to use strict priority mode. This queue will be used for all VoIP packets. Activate DiffServ for the switch. (Netgear Switch) #config (Netgear Switch) (Config)#cos-queue strict 5 (Netgear Switch) (Config)#diffserv 190 | Chapter 12. DiffServ