fw 05.01.00 and sw 07.01.00 edge switch 2/24 product manager user guide

Using Logs
148 Edge Switch 2/24 Product Manager User Guide
Loss-of-signal or loss-of-synchronization.
This occurs if a cable is unplugged from an attached node.
Loss-of-synchronization condition has persisted for longer than the
resource allocation time out value (R_A_TOV).
Not-operational (NOS) primitive sequence received. A NOS was
recognized.
Primitive sequence timeout.
Link reset protocol timeout occurred.
Timeout occurred for an appropriate response while in NOS receive
state and after NOS is no longer recognized.
Invalid primitive sequence received for the current link state.
Either a link reset or a link reset response primitive sequence was
recognized while waiting for the offline sequence.