Fault Detection And Reporting; Alarm Hierarchy; Alarm History; Snmp Traps Use For Fault Reporting - Harris CM-30 Installation & Operation Manual

NetXpress LX & CM-30 Installation & Operation Manual
Version 1, September 2010

2.13 Fault Detection and Reporting

With the use of SNMP traps, the CM-30 system has the ability to detect and report on a number of
alarm conditions.
2.13.1

Alarm Hierarchy

The CM-30 system has major and minor alarms. A major alarm is a fault that has a direct effect on
service, such as a component failure disrupting the delivery or reception of data. A minor alarm is a
fault that has no effect on service, including all other errors detected which do not affect CM-30
operation.
The CM-30 system is also equipped with an alarm cutoff (ACO) switch. The ACO is a switch that can
be enabled to reduce the major alarm output signal to a minor alarm output as an over-ride until the
situation can be corrected.
The indicator lights on the front panel of the NetXpress LX or original Intraplex power supply modules
and on the NetXpress LX Home page give system alarm states (Section 4.3.1 – Start at the NetXpress
LX Home Page):
● Red light = Major shelf alarm (Alarm)
● Yellow light = Minor shelf alarm (Alert)
● Green light = No alarm condition exists (Normal)
2.13.2

Alarm History

You can review current alarms and alarm history from the NetXpress LX Home page. Go to Faults |
Alarm Table to display the Current Alarms screen or Faults | Alarm History to display the Alarm
History screen. Both screens contain this data:
● A list of alarms
● Dates and times the alarms occurred
● Severity of the alarms
● A description of each alarm occurrence
For troubleshooting and future reference, you can also off-load he NetXpress LX system alarm history
to a text file.
2.13.3

SNMP Traps Use for Fault Reporting

SNMP traps detect and report system faults. System events that generate SNMP traps include stateful
events (considered ON/OFF alarm events) and informational events (non-alarm, one-time-only
events).
Equipment-related system events indicate a hardware failure on the CM-30 module or in the shelf.
Processing-related system events indicate a failure was detected in software processing. Facility-
related system events indicate a failure occurred with one of the operation interfaces.
The available list of SNMP traps changes with each software version. The Notification section in the
MIB file supplied with your version of CM-30 application software gives a list of available SNMP traps.
2-20
2 – Functional Design
Harris Corporation
Intraplex Products