Port security is disabled globally by default.
Port security is local to each virtual device context (VDC). If
necessary, switch to the correct VDC before using this command.
This command does not require a license.
Enabling Port Security
If you enable port security globally, all other commands related to
port security become available.
If you are reenabling port security, no port security configuration
is restored from the last time that port security was enabled.
Disabling Port Security
If you disable port security globally, all port security
configuration is removed, including any interface configuration for port
security and all secured MAC addresses, regardless of the method by which the
device learned the addresses.