I'm not sure if it was a third party add-on or a users post, but back in the day someone posted a link to a cisco plugin that allowed the port number and duplex info on the switch to be pulled into Landesk Inventory as a custom inventory record against each pc in the port. Im presuming it was tied together as both the cisco switch and the Landesk core are aware of the mac address of the devices Nic.
Does anyone know if there is still anything like that now as I know Im going back a bit.