Here's what I'm trying to do: I'm trying to get the information on which switch/port that a jack wired to. On that jack, there is a Cisco IP phone (7942), and a computer plugged into its data port.
When I look at the CDP packets from the computer attached to it, I get the phone's CDP information (i.e. it sees the phone as a switch).
Is there a way to CDP packets, or the information on the switch behind the phone?