Juniper PTX10008 - OT and ET Interface Alarms and Defects

FEC statistics:
•
Corrected Errors—The number of bits received that were in error, but corrected.
•
Uncorrected Words—The number of FEC codewords received that were not correctable.
•
Corrected Error Ratio—The number of corrected bits divided by the number of bits received.
TIP: You can view FEC statistics by using the show interfaces interface-name extensive
operational-mode CLI command.
OT and ET Interface Alarms and Defects
Table 38 on page 113 and Table 39 on page 114 describe the OT and ET alarms and defects that can occur
on the line card and the link status when the alarm or defect occurs.
TIP: You can view OT and ET alarms and defects by using the show interfaces interface-name
extensive operational-mode CLI command.
Table 38: OT Interface Alarms and Defects
Link StatusDescriptionAlarmCategory
Link downLoss of signalNetwork lane LOSOTN
Link downLoss of frameNetwork lane LOF
Link downLoss of multiframeNetwork lane LOM
Link downBackward defect identificationNetwork lane OTU-BDI
Link down if signal
degrade or backward FRR
thresholds are met
Forward error correction degradedFEC degrade (OTU-FEC-DEG)OTN FEC
Possible link downThere are uncorrected words and
there are errors in the frame header
FEC excessive (OTU-FEC-EXE)
113