Cisco ONS 15454 - 2.7.178 KB-PASSTHR; Clear the KB-PASSTHR Condition; 2.7.179 KBYTE-APS-CHAN-FAIL

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.178 KB-PASSTHR
b. Record the primary MAA and secondary MAAs, if configured.
Tip You can record long strings of information such as the MAA address by using the CTC export and print
functions. Export it by choosing File > Export > html. Print it by choosing File > Print.
c. Log into the other node and record the primary MAA and secondary MAAs, if configured.
d. Compare this information. There should be at least one common primary or secondary MAA in
order to establish an adjacency.
e. If there is no common MAA, one must be added to establish an adjacency. Refer to the “Turn Up
Node” chapter in the Cisco ONS 15454 Procedure Guide for procedures.
Step 9 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC 1 800 553-2447.
2.7.178 KB-PASSTHR
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
The K Bytes Pass Through Active condition occurs on a nonswitching node in a BLSR when the protect
channels on the node are not active and the node is in K Byte pass-through state. It also occurs when a
BLSR ring is being exercised using the Exercise Ring command.
Clear the KB-PASSTHR Condition
Step 1 Complete the “Clear a BLSR External Switching Command” procedure on page 2-269.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC 1 800 553-2447.
2.7.179 KBYTE-APS-CHAN-FAIL
Default Severity: Minor (MN), Non-Service Affecting (NSA)
SONET Logical Object: OCN
The APS Channel Failure alarm is raised when a span is provisioned for different APS channels on each
side. For example, the alarm is raised if K3 is selected on one end and F1, E2, or Z2 is selected on the
other end.
This alarm is also raised during checksum failure if the K1 and K2 bytes are overwritten by test
equipment. It is not raised in bidirectional full pass-through or K-byte pass-through states. The alarm is
overridden by the “AIS-P” alarm on page 2-37, the “LOF (OCN)” alarm on page 2-151, the “LOS
(OCN)” alarm on page 2-164 or the “SF-P” alarm on page 2-224.