threshold (SONET path)
To set the bit error rate (BER) threshold values of the specified alarms for a SONET path, use the threshold
command in SONET/SDH path configuration mode. To remove the setting of the SONET path threshold
from the configuration file and restore the default condition, use the no form of this command.
threshold b3-tca bit-error-rate
no threshold b3-tca bit-error-rate
Syntax Description
Sets the B3 BER threshold crossing alarm (TCA). Default is 6.b3-tca
BER from 3 to 9 (10 to the minus x).bit-error-rate
Command Default
b3-tca: 6
Command Modes
SONET/SDH path configuration
Command History
ModificationRelease
This command was introduced.Release 3.9.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
For B3, the bit interleaved parity (BIP) error report is calculated by comparing the BIP-8 code with the BIP-8
code that is extracted from the B3 byte of the following frame. Differences indicate that path-level bit errors
have occurred.
In addition to BIP errors detected at the local end in the receive direction, B3 error counts detected in the G1
byte (P-REI or P-FEBE) by the far-end SONET equipment are returned.
The b3-tca keyword prints only a log message to the console (if reports for them are enabled).
Task ID
OperationsTask ID
read, writesonet-sdh
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
925
SONET Controller Commands on the Cisco ASR 9000 Series Router
threshold (SONET path)
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