Apsc-Imp - Cisco ONS 15327 User Documentation

Alarm Procedures
Procedure: Clear the APSCDFLTK Alarm
Prior to accepting a new mapping table, verify that each node has a unique node ID number:
Step 1
a.
b.
c.
d.
e.
f.
Verify correct configuration of the east port and west-port optical fibers. (See the
Step 2
section on page
If it is a four-fiber BLSR system, make sure that each protect fiber is connected to another protect fiber
Step 3
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.
Click Yes to accept the ring map.
Step 4
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.
b.
c.
d.
e.
If nodes are not visible, ensure that SONET Data Communications Channel (SDCC) terminations exist
Step 6
on each node:
a.
b.
c.
d.
If the alarm still does not clear, login to http://www.cisco.com/TAC for more information or call the
Step 7
Cisco Technical Assistance Center to report a service-affecting problem (1-800-553-2447).

14.4.7 APSC-IMP

•
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.
Cisco ONS 15327 User Documentation, R3.3
14-12
Login to a node on the ring.
Click the Provisioning > Ring tabs.
Record the node ID number.
Repeat Steps a–c for all nodes in the ring.
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.
Click Apply.
14-33.)
At the node (default) view, click the Provisioning > Ring tabs.
Highlight a BLSR.
Click Ring Map.
Verify that each node that is part of the ring appears on the ring map with a node ID and IP address.
Click Close.
Click the Provisioning > SONET DCC tabs.
Click Create.
Click the OC-N card that links to the adjacent node.
Click OK.
Minor, Non-Service-Affecting
Chapter 14 Alarm Troubleshooting
"E-W-MISMATCH"
June 2002