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Catalyst 3750-X and 3560-X Switch Command Reference
OL-29704-01
Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
auto qos trust
To disable auto-QoS on a port, use the no auto qos trust interface configuration command. Only the
auto-QoS-generated interface configuration commands for this port are removed. If this is the last port
on which auto-QoS is enabled and you enter the no auto qos trust command, auto-QoS is considered
disabled even though the auto-QoS-generated global configuration commands remain (to avoid
disrupting traffic on other ports affected by the global configuration). You can use the no mls qos global
configuration command to disable the auto-QoS-generated global configuration commands. With QoS
disabled, there is no concept of trusted or untrusted ports because the packets are not modified (the CoS,
DSCP, and IP precedence values in the packet are not changed). Traffic is switched in pass-through mode
(packets are switched without any rewrites and classified as best effort without any policing).
Examples This example shows how to enable auto-QoS for a trusted interface with specific cos classification.
Switch(config)# interface gigabitethernet2/0/1
Switch(config-if)# auto qos trust cos
You can verify your settings by entering the show auto qos interface interface-id privileged EXEC
command.
Related Commands Command Description
debug auto qos Enables debugging of the auto-QoS feature.
mls qos trust Configures the port trust state.
srr-queue bandwidth share Assigns the shared weights and enables bandwidth sharing
on the four egress queues mapped to a port.
queue-set Maps a port to a queue-set.
show auto qos Displays auto-QoS information.
show mls qos interface Displays QoS information at the port level.
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