11 — ONT statistics and performance monitoring
11-10 July 2008 Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06
ONT Product Information Manual Edition 01 3FE 51892 AAAA TCZZA
Rolling counters
When a rolling counter is enabled, you can retrieve the current count using a TL1 or
an EMS management session with the P-OLT. A snapshot of the current value in the
rolling counter is displayed as an integer.
Table 11-4 lists the rolling counters the 7342 ISAM FTTU uses to collect
performance monitoring statistics.
Table 11-4 Rolling counters
Some rolling counters can be set to automatically reset to zero after being retrieved.
See the 7342 ISAM FTTU Operations and Maintenance Procedures Guide using
TL1 and CLI document for restrictions, maximum count ranges, and the resetting of
rolling counters.
TCA counters and alarms
The following performance monitoring counters can generate TCA alarms:
• errored or lost Tx and Rx fragments for upstream traffic across all GEM ports on
the LT card on the modular and outdoor ONTs
• lost fragments (downstream) on aggregate GEM ports on the modular and
outdoor ONTs
• dropped frames (upstream and downstream) and dropped bytes (upstream) for
Ethernet traffic on all MoCA, VDSL2, and Ethernet ports on the outdoor ONT
• Rx errored frames for ports on the ONT configured for MoCA
TCA alarms
TCA thresholds are applied to 15-min interval-based counters. An alarm is raised if
the number of events occurring within a 15-min period exceeds the specified
threshold. The following alarms are raised:
• ONTL2UNI alarms
• ONTMOCA alarms
Layer 2 on Ethernet ports
Multimedia over coaxial alliance (MoCA) ports
TC-layer of the gigabit passive optical network (GPON) connection
Very-high-bit-rate digital subscriber line (VDSL2) ports
Counter description ONT
GPON ports ✓
Counter description
(2 of 2)
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