Verification of devices on your catalyst switch can be done in several ways. here's one.
On the supervisor to the following:(Assuming you are running CatOS vise native IOS)
show cam dynamic
This will show you the layer 2 MAC entries for each of your ports. Save these.
For each port you want to verify go you your router that handles routing directly for these Catalyst connected hosts (eigher MSFC on this cat or connected router).
sh ip arp = H.H.H is the MAC that you took from the "show cam dynamic".
Keep in mind that the format from Show cam is different than what is needed for this show ip arp command... You'll need to modify the MACs.
This will give you the devices IP address. From this you should be able to get hostname from DNS / nbtstat -A (ip) / or other method to update the names on your ports.
Hope this helps you,
Don
