Nortel Networks OPTera Metro 3500 - Manual (Page 140)

2-102 Operation, administration, and maintenance (OAM) features
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Optical interoperability of OPTera Metro 3500
• The OPTera Metro 3500 shelf supports OC-3, OC-12, OC-48 and OC-192
UPSR interoperability with other GR1400 compliant vendors for the
purpose of passing traffic, routing, and network management data.
• The OPTera Metro 3500 shelf supports OC-3, OC-12, OC-48 and OC-192
1+1 interoperability with other vendors for the purpose of passing traffic,
routing, and network management data.
• Interoperability with the OPTera Metro 3500 OC-192 Long reach (LR)
G.709 FEC and OC-192 DWDM G.709 FEC optical interfaces requires
G.709 compatible optics.
• OPTera Metro 3500 does not support BLSR interoperability, as the
standards have not been defined.
Performance monitoring
OPTera Metro 3500 network elements support a performance monitoring
subsystem that uses traffic performance to help identity transmission
problems.
The network element supports several types of surveillance mechanisms
including alarms, performance statistics, and messages generated by alarm
conditions. Supported alarms include environmental, traffic trouble,
light-emitting diode indicators, and automatically generated messages.
The performance monitoring subsystem allows threshold levels to be preset for
different parameters and manual retrieval of data.
SONET line, section, and path parameters
Performance monitoring parameters for traffic-carrying facilities include
near-end and far-end line, section and path parameters, such as errored seconds
and coding violations.
The performance monitoring subsystem reads and analyzes the performance
monitoring data every second. Performance monitoring counts accumulate for
the following time intervals:
• current 15 minutes
• current one day
• current untimed interval
• 32 15-minute intervals prior to the current interval
• 1 day prior to the current interval