Brocade Communications Systems 1606 Administrator's Manual page 485

You can configure authentication on all three Brocade trunking configurations. For more
information on authentication, see
Fabric OS Administrator's Guide
53-1001336-01
Trunk ports should be turned on after issuing the secPolicyActivate command to prevent the
ports from becoming disabled in the case where there is a DCC security policy violation.
F_Port masterless trunking
Chapter 7, "Configuring Advanced Security
19
Features".
443