Cisco Catalyst 2950 Software Configuration Manual page 473

Chapter 24 Configuring QoS
Configuring the Trust State on Ports within the QoS Domain
Note This feature is available only if your switch is running the enhanced software image.
Packets entering a QoS domain are classified at the edge of the QoS domain. When the packets are
classified at the edge, the switch port within the QoS domain can be configured to one of the trusted
states because there is no need to classify the packets at every switch within the QoS domain.
shows a sample network topology.
Figure 24-3 Port Trusted States within the QoS Domain
78-11380-04
Trusted interface
Catalyst 2950
wiring closet
Classification
of traffic
performed here
Catalyst
3550-12T switch
Trunk
Catalyst 2950 Desktop Switch Software Configuration Guide
Configuring QoS
Figure 24-3
24-11