HP StorageWorks 16-EL - SAN Switch Reference Manual page 52

System Error Messages
Recommended Action
Since the HELLO message from the remote switch is incompatible with the local
switch, the local switch will not accept FSPF frames from the remote switch. The
HELLO message of the remote switch must be made compatible with the value
specified in the FSPF protocol. See the manufacturer's documentation to change
this value. Call Technical Support with questions.
Severity
Error
52 Diagnostic and System Error Messages Version 3.1.x Reference Guide