Cisco Catalyst 2360 Software Configuration Manual page 409

Chapter 25 Configuring 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 25-1
Figure 25-1
Beginning in privileged EXEC mode, follow these steps to configure the port to trust the classification
of the traffic that it receives:
Command
Step 1 configure terminal
Step 2 interface interface-id
Step 3 mls qos trust [cos]
OL-19808-01
shows a sample network topology.
Port Trusted States within the QoS Domain
Trusted interface
P3 P1
IP
Trusted boundary
Purpose
Enter global configuration mode.
Specify the port to be trusted, and enter interface configuration
mode.
Valid interfaces include physical ports.
Configure the port trust state.
•
Trunk
Traffic classification
performed here
cos—Classifies an ingress packet by using the packet CoS value.
For an untagged packet, the port default CoS value is used. The
default port CoS value is 0.
Catalyst 2360 Switch Software Configuration Guide
Configuring QoS
25-5