Nortel IW SPM IP Manual

Nortel IW SPM IP Manual Manual pdf 1 page image

IW SPM IP Fault ManagementNortel Networks ConfidentialCopyright © 2004, Nortel NetworksIW SPM IP Fault ManagementFault management strategyAlarm reporting system for SPM-based equipmentThe alarm reporting system integrates event detection and alarmnotification functions. An alarm becomes active when a reducedservice, reliability, or test condition occurs in the network or networkelement. The alarm remains active until a system event or activityperformed by operating company personnel clears the alarm condition.The alarm system includes audible notification and visual displaythrough warning lights and the Maintenance and AdministrationPosition (MAP) terminal.• Critical alarmA critical alarm indicates a reduced service condition or completeloss of service. A critical alarm indicates that the system can nolonger perform its design function. The alarm condition requiresimmediate correcting action so that the performance of the systemcan return to its design function.• Major alarmA major alarm indicates lost redundancy. The next fault of the sametype can cause a reduction or complete loss of service. There is nobackup if another fault occurs on the active system. this alarm levelcan be generated when service decreases below an operatingcompany defined threshold.• Minor alarmA minor alarm indicates a small loss of redundancy. The next faultof the same type will not cause degradation of service.Equipment alarms and alarm severity codes indicate the effect that afault or event has on a single piece of equipment. There are three typesof alarm severities:For IW SPM IP-based equipment, the MAP terminal displays alarmcodes in the banner and the subsystem status summary field (SSSF).The alarm banner displays alarm codes that indicate the effect of the