Apscm; Apscnmis - Cisco ONS 15327 User Documentation

Alarm Procedures

14.4.9 APSCM

•
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.
Invisible laser radiation may be emitted from the aperture ports of the single-mode, fiber-optic
Warning
modules when no cable is connected. Avoid exposure and do not stare into open apertures.
Always use the supplied ESD wristband when working with a powered ONS 15327. Plug the wristband
Caution
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
Verify that the working-card channel fibers connect directly to the adjoining node working-card channel
Step 1
fibers.
Verify that the protection-card channel fibers connect directly to the adjoining node protection-card
Step 2
channel fibers.

14.4.10 APSCNMIS

•
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
Verify that each node has a unique node ID number:
Step 1
a.
b.
c.
d.
e.
Cisco ONS 15327 User Documentation, R3.3
14-14
Major, Service-Affecting
Major, Service-Affecting
Click the Provisioning > Ring tabs.
Click the BLSR row to highlight.
Click Ring Map.
If the Node ID column contains any two nodes with the same node ID listed, record the repeated
node ID.
Click Close on the Ring Map dialog box.
Chapter 14 Alarm Troubleshooting
June 2002