HP ProCurve 2510 Management And Configuration Manual page 225

Port Trunking
Port Status and Configuration
Default Port Operation
In the default configuration, LACP is off. The port will not try to detect a trunk
configuration and will operate as a standard, untrunked port.
N o t e
Passive and active LACP ports will pause and listen for LACP packets once a
link is established. Once this pause is complete then the port, if a trunk is not
detected, will be placed in forwarding mode. Some end-node applications have
been found to be sensitive to this pause and may require LACP to be disabled
on the port.
The following table describes the elements of per-port LACP operation. To
display this data for a particular switch, execute the following command in
the CLI:
ProCurve> show lacp
11-19