Specifications

1-9
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
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’s working-card
channel fibers.
Step 2 Verify that the protection-card channel fibers connect directly to the adjoining node’s protection-card
channel fibers.
1.3.10 APSCNMIS
• Major, Service affecting
The APSCNMIS alarm raises when the node ID contained in the K byte of the APS channel being
received does not match the node ID expected by the receiving node in a BLSR. 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.
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.
Step 2 If two nodes have the same node ID number, change one node’s ID number so that each node has a unique
node ID:
a. Display the network view.
b. Log into one of the nodes that uses the repeated node ID recorded in Step 1.
Note If the node names shown on the network view do not correlate with the node IDs, log into
each node and click the Provisioning > Ring tabs. This screen displays the node ID of the
node you are logged into.
c. Click the Node ID table cell to reveal a pull-down menu.
d. Select a unique node ID from the pull-down menu and click Apply.
Note Locking out and clearing the lockout on a span causes the ONS 15454 to generate a new K
byte. The APSCNMIS alarm clears when the node receives a K byte containing the correct
node ID.