To use DiffServ for QoS, we need to first define the following categories and their criteria: 1. Class: create classes and define class criteria 2. Policy: create policies, associate classes with policies, and define policy statements 3. Service: add a policy to an inbound interface   Packets are classified and processed based on defined criteria. The classification criteria is defined by a class. The processing is defined by a policy's attributes. Policy attributes may be defined on a per-class instance basis, and it is these attributes that are applied when a match occurs. A policy can contain multiples classes. When the policy is active, the actions taken depend on which class matches the packet.   Packet processing begins by testing the class match criteria for a packet. A policy is applied to a packet when a class match within that policy is found. The Differentiated Services menu page contains If you had video on VLAN 22 and wanted to assign it a specific preference and assign it to port 1. The commands should look similar to this.   class-map match-all test22 ipv4 match vlan 22 exit  policy-map test23 in class test22 assign-queue 4 exit  interface ethernet 1/g1 service-policy in test23   There are several different match criteria that can be used. The user and CLI guides outline the available options. [URL]   Hope this helps
Hi I need to setup DiffServ on a PC6248 switch and PC5548 switch. Can you provide with a sample config coomands to create 2 classes. 1 data and 1 video and the assign it to end device ports. Also how do I configure trunk ports with the classes? Is it even neccesary? Thanks 
how to configure DiffServ on PC6200