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Chapter 26 Configuring QoS
Configuring QoS
Note Both the EI and SI support this feature.
Configuring the Trust State on Ports within the QoS Domain
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.
Figure 26-3 shows a sample network topology.
Figure 26-3 Port Trusted States within the QoS Domain
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Catalyst
3550-12T switch
Trunk
Trusted interface
Classification
of traffic
performed here
Catalyst 2950
wiring closet
IP