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TCX1000 Alarm Overview


In the TCX Series Optical Transport System, there are two different sources of optical alarms:

  • TCX1000 managed device alarms — The TCX1000-RDM20 is responsible for all conditions that are validated on the device itself. Examples include any alarms associated with the port, connection, or amplifier.

  • proNX Optical Director generated alarms — The optical control layer (OCL) application within proNX Optical Director generates alarms for conditions that cannot be validated by the managed device. Examples include span and pass-through nodal loss out-of-range (OOR) alarms.

An alarm is a persistent indication of a fault that clears only when the triggering condition has been resolved. A current list of problems occurring on the network component is kept in the form of an active alarm list.

A list of cleared faults is also maintained.

In general alarms are:

  • Persistent indication

  • Clear only when the triggering condition resolved

  • Active alarm list

  • Cleared faults list is maintained

  • Filtering of alarms to severity levels

  • Alarm severity: critical, major, minor warning

Current alarms are maintained along with historical alarms for a configurable period of time. This allows debugging of network issues after a fault has occurred.

By default, alarm event notification is turned off. Each user can choose to enable alarm event notification. If enabled, event notifications are sent for all alarms raised. There is also a throttling mechanism so that you are not inundated with notifications during alarm storms.