The question calls for Layer-2 trust to be applied to a wired IP Phone port. The solution applies the command:
interface FastEthernet2/20 mls qos trust cos It would help in this question if it mentioned the model of the module that the phone is connected to. If its connected to a 6248/6348 it would not. To get it to work with a 6248/6348 you would need to configure a policy-map due to a hardware limitation policy-map trust-cos class class-default trust cos ! interface FastEthernet2/20 mls qos trust cos service-policy input trust-cos Reference here<http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a008014a29f.shtml#limit_linecards> Comments welcome. Regards, Leigh. -- CCIE Blog - http://leigh-cciewireless.blogspot.com/
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