Switch User Manual

QoS Commands 215
Default Configuration
The following table describes the default map.
Command Mode
Global Configuration mode
User Guidelines
• Queue settings for 3, 11, 19, ... cannot be modified.
Example
The following example maps DSCP values 33, 40 and 41 to queue 1.
qos trust (Global)
The qos trust Global Configuration mode command can be used to configure the system to "trust"
state. To return to the default state, use the
no form of this command.
Syntax
qos trust { cos | dscp }
no qos trust
• cos —Classifies ingress packets with the packet CoS values. For untagged packets, the
port default CoS is used.
•
dscp —Classifies ingress packets with the packet DSCP values.
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.
DSCP value 0-15 16-31 32-47 48-63
Queue-ID 1 2 3 4
Console (config)# qos map dscp-queue 33 40 41 to 1