14-14
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 14 Alarm Troubleshooting
Alarm Procedures
14.4.9 APSCM
•
Major, Service-Affecting
The APS Channel Mismatch (APSCM) alarm occurs when the ONS 15327 expects a working channel
but receives a protection channel. In many cases, the working and protection channels are crossed and
the protect channel is active. If the fibers are crossed and the working line is active, the alarm does not
occur. The APSCM alarm only occurs on the ONS 15327 when 1+1 bidirectional protection is used on
OC-N cards in a 1+1 configuration.
Warning
Invisible laser radiation may be emitted from the aperture ports of the single-mode, fiber-optic
modules when no cable is connected. Avoid exposure and do not stare into open apertures.
Caution
Always use the supplied ESD wristband when working with a powered ONS 15327. Plug the wristband
cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
Procedure: Clear the APSCM Alarm on an OC-N Card in 1+1 Mode
Step 1
Verify that the working-card channel fibers connect directly to the adjoining node working-card channel
fibers.
Step 2
Verify that the protection-card channel fibers connect directly to the adjoining node protection-card
channel fibers.
14.4.10 APSCNMIS
•
Major, Service-Affecting
The APS node ID mismatch (APSCNMIS) alarm raises when the source-node ID contained in the K2
byte of the APS channel being received is not present in the ring map. This alarm may occur and clear
when a BLSR is being provisioned. If so, the user can disregard the temporary occurrence. If an
APSCNMIS raises and stays, the alarm clears when the receiving node receives or matches the expected
K-byte. If the APSCNMIS is raised and stays, the alarm clears when a K byte with valid source-node ID
in K2 is received.
Procedure: Clear the APSCNMIS Alarm
Step 1
Verify that each node has a unique node ID number:
a.
Click the
Provisioning > Ring
tabs.
b.
Click the BLSR row to highlight.
c.
Click
Ring Map
.
d.
If the Node ID column contains any two nodes with the same node ID listed, record the repeated
node ID.
e.
Click
Close
on the Ring Map dialog box.
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...