I have a 2960 switch that holds all voice connections in a location of the company.
This switch is connected to 3750 switch that is used for something like Core device.
There is an uplink from 2960 to 3750 Core. I want to configure QoS on the 3750 Core using Auto QoS. Can I do it in following fashion?
First, create an access list that matches all voice ports on 3750, then create a class map and match the access list in it. Then create a policy map and set DSCP to EF for the previously created class. Apply this policy map under the uplink port on 3750 (connection to the voice 2960 switch) in input direction. Then go to a Layer 3 interface on the 3750 (connected to remote office) and enable auto qos under it.
In this case will Auto QoS keep in consideration the DSCP values already set by the policy map or no?
If the procedure above is not correct please advice how to mark voice traffic with access list (or in another way) and to use Auto QoS? Thanks in advance guys!