Switch User Manual

216 QoS Commands
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• 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. To disable the
trust state on each port, use the
no form of this command.
Syntax
qos trust
no qos trust
Default Configuration
Each port is enabled while the system is operational.
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.
Example
The following example configures port g5 to default trust state (CoS).
qos cos
The qos cos Interface Configuration mode command configures the default port CoS value. To
return to the default setting, use the
no form of this command.
Syntax
qos cos default-cos
no qos cos
Console (config)# qos trust dscp
Console (config)# interface ethernet g5
Console (config-if) qos trust