Performance Monitoring Threshold Crossing Alerts (Tca); Tcas; Tca Summary Alarms - Nortel NTRN10AN Planning Manual

2-114 Operation, 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:
•
•
•
•
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.
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.

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
threshold crossing alert (TCA) (default report type)
TCA summary alarm
both TCA and TCA summary alarm
no reporting
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.
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.
NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004