In the QoS enforcement paradigm the issue of trust and the trust boundary is equally important.

Ip phone qos marking. QoSIs this different from the cisco phone. QPPB lets you encode QoS information by assigning BGP attributes such as an autonomous system number community string or an IP prefix. For example instead of setting the IP Precedence marking to a 4 inside every packet you could send the traffic with a certain community string.

QoS isnt a guarantee but its the best way to tune your network for better voice over IP performance. Configuration File via Provisioning Server. To make sure that the AutoQoS feature can work correctly configure it in this order.

QoS functions based the incoming packets DSCP or IP Precedence value. Above you see the IP header with all its fields including the TOS byte. We can use that value to tell the routers or switches what CoS group to put that traffic in.

Configuring QoS for VoIP only takes a few minutes on most routers. No remember you need to apply QoS to Voice RTP and Signaling. Regulate data flows by classifying scheduling and marking packets based on priority and by shaping traffic.

Dont mix up TOS Type of Service and COS Class of Service. Routers and other network devices can be configured to recognize this and put the traffic in a separate higher-priority queue. The first one is found in the header of an IP packet layer 3 and the second one is found in the header of 8021Q layer 2.

For Signaling use COS3 and Voice use COS5 as a standard but is just for marking the packet. Then click on call control and go to options. I have an IP412 unit with two LAN ports this allows me to isolate VLAN 2 traffic.