Port security

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, and enables port security on that port. For example:

switch# port-security a17 learn-mode static address-
limit 2 LACP has been disabled on secured port(s.)

The switch does not allow you to configure LACP on a port on which port security is enabled. For example:

switch# int a17 lacp passive
Error configuring port A17: LACP and port security cannot be
run together.

To restore LACP to the port, you must remove port security and re-enable LACP active or passive.