
BCC show Commands
308648-14.00 Rev 00
B-43
show mct1e1 fdl-ansi
The
show mct1e1 fdl-ansi
command displays the Facility Data Link (FDL) error
statistics in ANSI-403 mode.
The output contains the following information:
Slot/Module/Conn Name of the physical interface.
Line Number Line number for this line; assigned during configuration. This line
number uniquely identifies this interface and is not equal to any of
the line numbers assigned to logical lines configured through this
port.
CRC Counts Number of CRC-6 errors. The FDL calculates CRC-6 on the
incoming data. Each time the calculation does not match the
CRC-6 code word in the incoming enhanced super frame (ESF)
data stream, this count increments.
BPV Counts Number of bipolar (line code) violations. The FDL counts bipolar
violations whether its synchronizer is in sync or not. If the FDL is
set to receive B8ZS code words, it does not count these code
words as bipolar violations.
OOF Counts Number of out-of-frame errors. An out-of-frame error occurs
whenever two or more framing bits out of six in the Framing Pattern
Sequence (FPS) are incorrect. This event causes the FDL to
resynchronize to the incoming data stream.
FE Counts Number of individual bit errors in the FPS.
ES Counts Number of Errored Seconds (ES). An ES is any 1-second time
interval with either a frame bit error or a CRC-6 error.
SES Counts Number of Severely Errored Seconds (SES). An SES is any
1-second time interval with an OOF error or more than 320
CRC-errors.
UAS Counts Number of Severely Errored Seconds (UAS). A UAS is the number
of seconds between 10 consecutive SES events (inclusive) and 10
consecutive non-SES events (exclusive). For more information,
refer to the 1989 ANSI T1.403 specification (
Carrier-to-Customer
Installation DS1 Metallic Interface
).
PRMES Counts Number of Errored Seconds reported in the Performance Report
Messages (PRMs).
PRMSES Counts Number of Severely Errored Seconds reported in the PRMs.
PRME Counts Number of PRMs received in error.
In error
means that the
calculated CRC does not match the incoming CRC word.
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