IBM 12.1(22)EA6 - Manual (Page 426)

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Cisco Systems Intelligent Gigabit Ethernet Switch Modules for the IBM BladeCenter, Software Configuration Guide
24R9746
Chapter 23 Configuring QoS
Configuring Standard QoS
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 23-4
shows a sample network topology.
Figure 23-4 Port Trusted States within the QoS Domain
Beginning in privileged EXEC mode, follow these steps to configure the port to trust the classification
of the traffic that it receives:
92440
Catalyst
3550-12T switch
Trunk
Trusted interface
Classification
of traffic
performed here
Catalyst 2950
wiring closet
BladeCenter
IP
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2 interface interface-id Specify the interface to be trusted, and enter interface configuration
mode.
Valid interfaces include physical interfaces.