The "autoqos classify" does not create voip class. The af41 is assigned for the "multienhanced" class, not voip. To auto generate voip class, the command is "auto qos voip ..." , which creates the class autoqos_voip_data_class that is for the voice traffic.
Multienhanced class is for the video traffic of a call.
Why the separate command for voice? I think the commands were programmed when the 3750 or 3560 and those fixed-ports, high density switches didn't have LLQ configuration in the MQC. Instead, a separate queue was dedicated to voip, making the formula like 1p3q2t . 3750's MQC still does not have LLQ, but the queues are merged making the formula like 4q3t. However, the commands stay.
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