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For B1, 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 B1 byte of the following frame. Differences indicate that section-level bit errors
have occurred.
For B2, the BIP error report is calculated by comparing the BIP-8/24 code with the BIP-8 code that is extracted
from the B2 byte of the following frame. Differences indicate that line-level bit errors have occurred.
Signal failure BER and signal degrade BER are sourced from B2 BIP-8 error counts (as is B2-TCA). The
b1-tca
and
b2-tca
keywords print only a log message to the console (if reports for them are enabled).
To determine the BER thresholds configured on the controller, use the
show controllers sonet
command.
Task ID
Operations
Task ID
read, write
sonet-sdh
Examples
The following example shows how to configure thresholds on the SONET controller:
RP/0/RSP0/CPU0:router(config)#
controller sonet 0/2/0/2
RP/0/RSP0/CPU0:router(config-sonet)#
threshold sd-ber 8
RP/0/RSP0/CPU0:router(config-sonet)#
threshold sf-ber 4
RP/0/RSP0/CPU0:router(config-sonet)#
threshold b1-tca 4
Related Commands
Description
Command
Permits selected SONET alarms to be logged to the console for
a SONET controller.
report (SONET), on page 886
Displays information about the operational status of SONET
layers.
show controllers sonet, on page 906
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
924
SONET Controller Commands on the Cisco ASR 9000 Series Router
threshold (SONET)