CMMVC7243E The specified port mask cannot be applied because insufficient paths would exist for node communication.
Explanation
The localfcportmask port mask value
that was specified would cause one or more nodes to lose contact with
the system.
User response
Check zoning. Fix any port errors in the event log. Use the lsfabric CLI command to ensure that when the correct port mask is specified and applied, all nodes would still have two paths to contact every other node in the system.