To permit selected SONET alarms to be logged to the console for a POS interface, use the pos report interface command. To disable logging of select SONET alarms, use the no form of this command.
pos report {b1-tca | b2-tca | b3-tca | lais | lrdi | pais | plop | prdi | rdool | sd-ber | sf-ber | slof | slos}
no pos report {b1-tca | b2-tca | b3-tca | lais | lrdi | pais | plop | prdi | rdool | sd-ber | sf-ber | slof | slos}
b1-tca | Report B1 bit error rate (BER) threshold crossing alarm errors. Reported by default. |
b2-tca | Report B2 BER threshold crossing alarm errors. Reported by default. |
b3-tca | Report B3 BER threshold crossing alarm errors. Reported by default. |
lais | Report line alarm indication signal errors. |
lrdi | Report line remote defect indication errors. |
pais | Report path alarm indication signal errors. |
plop | Report path loss of pointer errors. Reported by default. |
prdi | Report path remote defect indication errors. |
rdool | Report receive data out of lock errors. |
sd-ber | Report signal degradation BER errors. |
sf-ber | Report signal failure BER errors. Reported by default. |
slof | Report section loss of frame errors. Reported by default. |
slos | Report section los of signal errors. Reported by default. |
b1-tca, b2-tca, b3-tca, plop, sf-ber, slof, and slos are reported by default.
Interface configuration
This command first appeared in Cisco IOS Release 11.1 CC.
Reporting an alarm means that the alarm can be logged to the console. Just because an alarm is permitted to be logged does not guarantee that it is logged. SONET alarm hierarchy rules dictate that only the most severe alarm of an alarm group is reported. Whether an alarm is reported or not, you can view the current state of a defect by checking the "Active Defects" line from the show controllers pos command output. A defect is a problem indication that is a candidate for an alarm.
For B1, the bit interleaved parity error report is calculated by comparing the BIP-8 code with the BIP-8 code extracted from the B1 byte of the following frame. Differences indicate that section level bit errors have occurred.
For B2, the bit interleaved parity error report is calculated by comparing the BIP-8/24 code with the BIP-8 code extracted from the B2 byte of the following frame. Differences indicate that line level bit errors have occurred.
For B3, the bit interleaved parity error report is calculated by comparing the BIP-8 code with the BIP-8 code extracted from the B3 byte of the following frame. Differences indicate that path level bit errors have occurred.
PAIS is sent by line terminating equipment (LTE) to alert the downstream path terminating equipment (PTE) that it has detected a defect on its incoming line signal.
PLOP is reported as a result of an invalid pointer (H1, H2) or an excess number of new data flag (NDF) enabled indications.
SLOF is detected when a severely error framing (SEF) defect on the incoming SONET signal persists for 3 milliseconds.
SLOS is detected when an all-zeros pattern on the incoming SONET signal lasts 19(+-3) microseconds or longer. This defect might also be reported if the received signal level drops below the specified threshold.
To determine the alarms that are reported on the interface, use the show controllers pos command.
The following example enables reporting of SD-BER and LAIS alarms on the interface:
Router(config)# interface pos 3/0/0
Router(config-if)# pos report sd-ber
Router(config-if)# pos report lais
Router(config-if)# end Router#