Notifications and symptomatic events
Notifications Generated by the Optical Transport Manager lists the notifications generated by the Optical Transport Manager for low-order optical network elements and network connections in the
SDH network.
Managed Element | Notification | Condition |
|---|---|---|
Card | Down | A card in a network element has failed. |
Equipment | Down | Equipment in a network element has failed. |
PTP | Down | A PTP on a network card or equipment has failed. |
PTPHardFailureCondition | A hard failure indication has been observed on this PTP. | |
OpticalNetworkElement | Down | The EMS has lost management connection with the NE. |
DropSideTopologicalLink | Down | The drop side topological link is down. |
HighOrder_Trail | TrailDown | This facility is down. |
TrailAtRisk | One element
of a protection group is down. Communication continues, but without the security of redundancy. | |
LowOrder_Circuit | ServiceUnavailable | This facility is down. May be a result of TransportOutgoingFail, TransportIncomingFail, or TransportFail. |
ServiceAtRisk | One element of a protection group is down. Communication
continues, but without the security of redundancy. |
The following sections describe the root-cause problems and related symptoms for optical network elements and network connections.