ProCurve 6400cl Management And Configuration Manual page 416

Configuring for Network Management Applications
LLDP (Link-Layer Discovery Protocol)
15-62
information on displaying the currently configured port speed and duplex on
an LLDP-MED endpoint, refer to "Displaying the Current Port Speed and
Duplex Configuration on a Switch Port" on page 15-61.
Syntax: show interfaces brief < port-list >
Includes port speed and duplex configuration in the Mode
column of the resulting display.
(This command is available on all switch models covered by
this guide.)
Displaying Advertisements Currently in the Neighbors MIB. These
commands display the content of the inbound LLDP advertisements received
from other LLDP devices.