Alcatel-Lucent 7330 Product Information Manual page 105

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
•
PONOLTTC alarms
•
PONOLTTCONT alarms
•
PONONTTC alarms
•
xDSL (VDSL2) alarms
TCA provisioning
Performance monitoring counters are provisioned using either a TL1 or an EMS
management session with the P-OLT. TCA is disabled by default. The procedure
required for provisioning TCAs varies, depending on the type of interface or service
you are monitoring.
•
To enable TCA for VDSL2, you must first create a VDSL2 TCA profile, which
specifies the threshold values for ES. SES and USA counters. The name and ID
of the profile must then be assigned to a particular VDSL2 interface. Finally,
enable TCA using the TL1 ONTVDSL performance monitoring provisioning
commands or set the appropriate fields in the EMS.
•
To enable TCA for all other counters, you do not need to create a profile. You
only need to set the threshold value using TL1 or an EMS. After the threshold is
set, enable TCA using the appropriate TL1 performance monitoring provisioning
commands or set the appropriate fields in the EMS.
PON quality can be monitored with the following:
•
abnormal incrementation of absolute BER values in each direction
•
BER-related alarms such as SD/SF in upstream or RDI in downstream
•
optical power at OLT and ONT side (RSSI)
Performance monitoring TCAs can also be used to flag dropped frames which can
occur due to either data corruption on the PON or queue overflows. TCA values
should be set based on historic normal behaviors for the network.
Alcatel-Lucent 7330/7302 ISAM FTTN R04.02.41
3FE 54017 AAAA TCZZA
December 2010
Edition 01 ONT Product Information Guide
4 — ONT and MDU statistics and performance monitoring
4-5