Nortel Networks NTRN10AN, 3500 manual Performance monitoring threshold crossing alerts TCA, TCAs

2-114Operation, administration, and maintenance (OAM) features

Performance monitoring threshold crossing alerts (TCA)

This feature groups together TCAs to minimize the number of alarms raised from a particular facility. Summary alarms are reported per facility and are raised when one or more TCAs have been raised for the facility within a collection period (15-min. or 1-day).

When monitored performance monitoring (PM) counts exceed their provisioned thresholds, the system generates a threshold crossing report. You can provision the report type to one of the following options:

•threshold crossing alert (TCA) (default report type)

•TCA summary alarm

•both TCA and TCA summary alarm

•no reporting

Report type provisioning is supported for the following facilities: OC-3, OC-12, OC-48, OC-192, STS-1, STS-3c, STS-12c, STS24c, STS48c, WAN, FC, ETH and EC-1.

Note 1: TCA summary alarms will not be supported on DS1 and DS3 facilities.

Note 2: TCA summary alarms for OC3 facilities is supported on the OC3x4 cards only.

You provision the report type for each facility type and location based on the collection period (15-minute or 1-day). Report type provisioning is not valid for untimed PMs.

Note: Physical PMs do not generate TCA summary alarms. Protection PMs do not support thresholds and therefore do not generate TCAs or TCA summary alarms.

TCAs

When TCA reporting is enabled, the system raises a TCA when the provisioned threshold of a monitored parameter is exceeded during a collection period. Multiple TCAs can be raised against a facility within a single collection period. For example, two separate TCAs for two section PM parameters can be raised during a single collection period for the same facility.

TCA summary alarms

The TCA summary alarms provide a first alert notification to maintenance personnel that a TCA has been generated. The TCA summary alarms can enable maintenance personnel to troubleshoot and avoid potentially service-affecting problems.

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004