I am plannig to apply End to End QOS (L2 and L3) on a Large Network Path that is having many hops. I am new in the QOS field. Please find the attached diagram for your information. I have the following strategy;
1: Identify all the Voice traffic via Access-list and Class Map
2: Tag/Mark the voice traffic with dscp value 46 and prioritise this traffic inside Policy map.
3: Now on each uplink, get the traffic which has dscp value 46, and prioritise it.
Please find the attached sample configuration in note pad.
I have the below confussions;
1: Some devices on the path suppose 3750 is not supporting the priority command inside policy map.
What should i do with it?
2: Should i apply the service policy on outbound direction or inbound direction.
3: Do i need to apply the QOS policy on all the links(uplink, downlink) which is mentioned in the diagram.
4: Is the Voice traffic uni directional or bi-directional. I mean to say, do i only need to apply QOS on links from IP Phone to IPT server or also from IPT Server to IP Phone?
Waiting for your suggestion;