14-12
Cisco ONS 15454 Procedure Guide, R5.0
December 2004
Chapter 14 Add and Remove Nodes
NTP-A294 Remove a Path Protection Node
Step 5 Complete the “DLP-A442 Verify Pass-Through Circuits” task on page 21-23 to verify that circuits
passing through the target node enter and exit the node on the same STS.
Step 6 Complete the “DLP-A197 Initiate a Path Protection Force Switch” task on page 18-68 for all spans
connected to the node you are removing.
Step 7 Remove all fiber connections between the node being removed and the two neighboring nodes.
Step 8 Reconnect the fiber of the two neighboring nodes directly, west port to east port.
Step 9 Exit CTC and log back in. See the “DLP-A60 Log into CTC” task on page 17-66 for instructions.
Step 10 Log into each newly connected node and click the Alarms tab. Verify that the span cards are free of
alarms. Resolve any alarms before proceeding. Refer to the Cisco ONS 15454 Troubleshooting Guide.
Step 11 Complete the “DLP-A195 Verify Timing in a Reduced Ring” task on page 18-67.
Step 12 Complete the “DLP-A198 Clear a Path Protection Force Switch” task on page 18-70 to clear the
protection switch.
Step 13 Complete the “NTP-A177 Path Protection Acceptance Test” procedure on page 5-22.
Step 14 Complete the “DLP-A371 Remove Pass-through Connections” task on page 20-55.
Step 15 Log back into a node on the reduced ring. In the CTC Login dialog box, uncheck the Disable Network
Discovery check box.
Note The deleted node will appear in network view until all SDCC terminations are deleted. To delete
SDCC terminations, complete the “DLP-A156 Delete a Section DCC Termination” task on
page 18-23.
Step 16 Click the Circuits tab and verify that no incomplete circuits are present. If incomplete circuits appear,
repeat Steps 14 and 15.
Step 17 If you delete a node that was in a login node group, you will see incomplete circuits for that node in the
CTC network view. Although it is no longer part of the ring, the removed node still reports to CTC until
it is no longer in a login node group. If necessary, complete the “DLP-A372 Delete a Node from a
Specified Login Node Group” task on page 20-56.
Step 18 To remove another node from a path protection, repeat this procedure for the desired node.
Stop. You have completed this procedure.
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