Cisco ONS 15454 Troubleshooting Manual page 235

Chapter 2 Alarm Troubleshooting
The APSC-IMP alarm may be raised on a BLSR or MS-SPRing when a drop connection is part of a
Note
cross-connect loopback.
The APSC-IMP alarm may be momentarily raised on BLSR spans during PCA circuit creation or
Note
deletion across multiple nodes using CTC.
Warning Invisible laser radiation could be emitted from the end of the unterminated fiber cable or connector.
Do not stare into the beam directly with optical instruments. Viewing the laser output with certain
optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of
100 mm could pose an eye hazard. Statement 1056
Warning Use of controls, adjustments, or performing procedures other than those specified could result in
hazardous radiation exposure. Statement 1057
Clear the APSC-IMP Alarm
Use an optical test set to determine the validity of the K byte signal by examining the received signal.
Step 1
For specific procedures to use the test set equipment, consult the manufacturer.
Always use the supplied electrostatic discharge wristband when working with a powered ONS 15454.
Caution
Plug the wristband cable into the ESD jack located on the lower-right edge of the shelf assembly.
If the K byte is invalid, the problem lies with upstream equipment and not with the reporting ONS 15454.
Troubleshoot the upstream equipment using the procedures in this chapter, as applicable. If the upstream
nodes are not ONS 15454s, consult the appropriate user documentation.
If the K byte is valid, verify that each node has a ring name that matches the other node ring names.
Step 2
Complete the
Step 3 Repeat
Step 4 If a node has a ring name that does not match the other nodes, make that node's ring name identical to
the other nodes. Complete the
Step 5 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.
2.7.15 APSCINCON
November 2009
"Identify a BLSR Ring Name or Node ID Number" procedure on page
Step 2 for all nodes in the ring.
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
"Change a BLSR Ring Name" procedure on page
Cisco ONS 15454 Troubleshooting Guide, R8.5
2.7.15 APSCINCON
2-261.
2-261.
2-41