QoS Commands 297
Default Configuration
CoS is the default trust mode.
Command Mode
Global Configuration mode.
User Guidelines
• Packets entering a quality of service (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 domain.
• Use this command to specify whether the port is trusted and which fields of the packet to use to
classify traffic.
• To return to the untrusted state, use the
no qos
command to apply best effort service.
Example
The following example configures the system to DSCP trust state.
qos trust (Interface)
The qos trust Interface Configuration mode command enables each port trust state. Use the no form of
this command to disable the trust state on each port.
Syntax
• qos trust
• no qos trust
Default Configuration
Each port is enabled.
Command Mode
Interface Configuration (Ethernet, port-channel) mode.
User Guidelines
•Use
no qos trust
to disable the trust mode on each port.
Use
qos trust
to enable trust mode on each port.
Console (config)# qos trust dscp
5400_CLI.book Page 297 Wednesday, December 17, 2008 4:33 PM
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