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  • Pass-though port on phones active or not

    I have a request by a company's IT; to disable the PC pass-through Ethernet port on all phones. I figured out how to do this using the Config files, but now their IT has another request; How can he see which phones have an active Ethernet connection from the phone to a PC, so that they can move the connections prior to disabling the pass-though port.




  • #2
    Jump into each network switch and dump the MAC address table. There will be double entries for the same interface the phone is plugged into. Snippet from a Juniper switch below:

    voiplab 68:f7:28:15:34:9d Learn 0 ge-0/0/18.0
    voiplab_voice 00:10:49:02:33:22 Learn 0 ge-0/0/18.0

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    • #3
      OK. Thanks.

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