Hi experts,
I'm reviewing L2 QoS on 3560 and I need a clarification. If a cisco phone must 
be trusted on a port, do I need to add "mls qos trust cos" or just "mls qos 
trust device cisco-phone" is enough?

On IPX VoD slide 718 or minute 96:32 of QoS lecture there are both, on Doc-CD 
example only one but it says "depending on trust setting":

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_58_se/command/reference/cli1.html#wp11906329

Regards,

Gian Paolo
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