[CAUSE] The tmnxSatSyncIfTimHoldover notification is generated when the synchronous equipment timing subsystem of the satellite transitions into a holdover state. [EFFECT] The transmit timing of all synchronous interfaces on the satellite are no longer synchronous with the host. This could result in traffic loss. [RECOVERY] Investigate the state of the two input timing references on the satellite and the links between the host and the satellite (i.e. the uplinks) that drive them for failures.
Sources for this description
Netdisco MIB archive copiesNokia networking MIB copies (LibreNMS/Observium Community)