Command Reference Guide Port Channel Interface Config Command Set
61200510L1-35E Copyright © 2005 ADTRAN 1018

qos [trust cos | default-cos <cos value>]

Use the qos command to set the interface to the trusted state and to set the default CoS value. To return to
defaults, use the no version of this command.
Syntax Description
trust cos Sets the interface to the trusted state.
default-cos
<cos value>
Sets th e default CoS valu e for un trusted ports and all unt agge d p ackets (0 to 7).
Default Values
By default, the interface is untrusted with a default-co s of 0.
Applicable Platforms
This command applies to the NetVanta 300, 1000, and 1000R Series units.
Command History
Release 5.1 Command was introduced.
Functional Notes
Set the interface to trust cos if received 802.1P CoS values are considered valid (i.e., no need to
reclassify) and do not need to be tagged with the default value. When set to untrusted, the default-cos
value for the interface is used.
Usage Examples
The following example sets port channel 1 as a trusted interface and assigns untagged packets a CoS
value of 1:
(config)#interface port-channel 1
(config-p-chan 1)#qos trust cos
(config-p-chan 1)#qos default-cos 1