14-12
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 14 Alarm Troubleshooting
Alarm Procedures
Procedure: Clear the APSCDFLTK Alarm
Step 1
Prior to accepting a new mapping table, verify that each node has a unique node ID number:
a.
Login to a node on the ring.
b.
Click the
Provisioning
>
Ring
tabs.
c.
Record the node ID number.
d.
Repeat Steps a–c for all nodes in the ring.
e.
If two nodes have the same node ID number, change the ID number of one node so that each node
has a unique node ID.
f.
Click
Apply
.
Step 2
Verify correct configuration of the east port and west-port optical fibers. (See the
)
Step 3
If it is a four-fiber BLSR system, make sure that each protect fiber is connected to another protect fiber
and each working fiber is connected to another working fiber. The software does not report any alarm if
there is a working fiber incorrectly attached to a protection fiber.
Step 4
Click
Yes
to accept the ring map.
Step 5
If the alarm does not clear, check the ring map for each ONS 15327 in the network and verify that each
node is visible to the other nodes:
a.
At the node (default) view, click the
Provisioning
>
Ring
tabs.
b.
Highlight a BLSR.
c.
Click
Ring Map
.
d.
Verify that each node that is part of the ring appears on the ring map with a node ID and IP address.
e.
Click
Close
.
Step 6
If nodes are not visible, ensure that SONET Data Communications Channel (SDCC) terminations exist
on each node:
a.
Click the
Provisioning
>
SONET DCC
tabs.
b.
Click
Create
.
c.
Click the OC-N card that links to the adjacent node.
d.
Click
OK
.
Step 7
If the alarm still does not clear, login to http://www.cisco.com/TAC for more information or call the
Cisco Technical Assistance Center to report a service-affecting problem (1-800-553-2447).
14.4.7 APSC-IMP
•
Minor, Non-Service-Affecting
An improper SONET automatic protect switch code (APSC-IMP) alarm indicates invalid K bytes. This
alarm occurs on OC-N cards in a BLSR configuration. The receiving equipment monitors K bytes or K1
and K2 APS bytes for an indication to switch from the working card to the protect card or vice versa.
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 ...