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18-40 August 2003 Access Navigator - Release 1.8
CLI Language Reference
CLI Command List
Log BERT
Purpose: Displays BERT (bit error rate test) events, which are stored in a BERT log file that
holds the most recent 200 error reports. The Access Navigator records BERT events
whenever a BER test pattern is present and bit errors occur during any one-second
measurement interval. The BERT log file will be erased by a power interruption,
clear bert log command, reset command, or restore defaults command.
NOTE: The Access Navigator’s internal Bit Error Rate Testers (BERTs) are
always monitoring the DS1 inputs. Anytime a BER test pattern is present,
whether internally or externally generated, the bit errors will be recorded in the
BERT log.
Security: Level 3 (monitor)
Syntax: log bert
Message:
Time Date DS1 FBE BE CRC LCV/BPV
-------- ---------- --- ------ ------ ------ -------
14:12:15 06/16/2003 31 0 0 1 0
14:12:13 06/16/2003 31 0 0 2 0
14:08:21 06/16/2003 32 0 1 0 0
Description:
Item Description
Time Time is recorded in one-second intervals. Format is 24-hour
clock in hours:minutes:seconds with colons to separate the digits,
as in 08:30:45 and 15:22:10.
Date Date of error report. Format is month/day/year.
DS1 DS1 on which error occurred, 1 to 32
FBE Number of Frame Bit Errors (4095 maximum) in one-second
interval.
BE Number of Bit Errors (4095 maximum) in one-second interval
CRC Number of Cyclical Redundancy Check errors (1023 maximum)
in one-second interval
BPV/LCV Number of Bi-Polar Violations and Line Code Violations
(16,383 maximum) in one-second interval