This TruthValue field reports whether Fibre Channel link autonegotiation is enabled on this FC monitoring session's destination port's underlying link. For the physical FC port designated to receive the mirrored/copied traffic for an FC monitoring session, this setting has to match on both ends of the cable — a mismatch (one side forced, the other auto) is one of the classic causes of a link that comes up but runs at a lower speed than expected or drops frames under load. A value of 'true' here means this FC port is letting the far-end device negotiate link speed automatically rather than being pinned to one fixed FC speed by an admin.