HP ProCurve Management And Configuration Manual page 304

Port Trunking
Trunk Group Operation Using LACP
12-22
The switch will not allow you to configure LACP on a port on which port
access (802.1X) is enabled. For example:
ProCurve(config)# int b1 lacp passive
Error configuring port < port-number >: LACP and 802.1x
cannot be run together.
ProCurve(config)#
To restore LACP to the port, you must first remove the port's 802.1X configu­
ration and then re-enable LACP active or passive on the port.
Port Security Configured on a Port. To maintain security, LACP is not
allowed on ports configured for port security. If you configure port security
on a port on which LACP (active or passive) is configured, the switch removes
the LACP configuration, displays a notice that LACP is disabled on the port(s),
and enables port security on that port. For example:
ProCurve(config)# port-security a17 learn-mode static
address-limit 2
LACP has been disabled on secured port(s).
ProCurve(config)#
The switch will not allow you to configure LACP on a port on which port
security is enabled. For example:
ProCurve(config)# int a17 lacp passive
Error configuring port A17: LACP and port security cannot
be run together.
ProCurve(config)#
To restore LACP to the port, you must remove port security and re-enable
LACP active or passive.
Changing Trunking Methods. To convert a trunk from static to dynamic,
you must first eliminate the static trunk.
Static LACP Trunks. Where a port is configured for LACP (Active or
Passive), but does not belong to an existing trunk group, you can add that port
to a static trunk. Doing so disables dynamic LACP on that port, which means
you must manually configure both ends of the trunk.
Dynamic LACP Trunks. You can configure a port for LACP-active or LACP-
passive, but on a dynamic LACP trunk you cannot configure the other options
that you can on static trunks. If you want to manually configure a trunk, use
the trunk command. (Refer to "Using the CLI To Configure a Static or Dynamic
Trunk Group" on page 12-14.)