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QoS Commands
trust
Cisco 220 Series Smart Plus Switches Command Line Interface Reference Guide Release 1.0.0.x
Syntax
trust
no trust
Parameters
N/A
Default Configuration
The default state is according to the mode selected in the qos command
(advanced mode). The type of trust is determined in qos advanced-mode trust.
Command Mode
Policy-map Class Configuration mode
User Guidelines
This command is relevant only when the switch is in QoS advanced, ports-not-
trusted mode. Trust indicates that traffic is sent to the queue according to the
packet's QoS parameters (UP or DSCP).
Use this command to distinguish the QoS trust behavior for certain traffic from
others. For example, incoming traffic with certain DSCP values can be trusted. A
class map can be configured to match and trust the DSCP values in incoming
traffic.
The type of trust is determined in the qos advanced-mode trust command.
Trust values set with this command supersede trust values set on specific
interfaces with the qos trust (Interface) Interface Configuration mode command.
The trust and set commands are mutually exclusive within the same policy map.
Policy maps, which contain set or trust commands or that have ACL classification
to an egress interface, cannot be attached by using the service-policy Interface
Configuration mode command.
If specifying trust CoS, QoS maps a packet to a queue, the received or default port
CoS value, and the CoS-to-queue map.
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