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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.10.1 Protection Switching, Lock Initiation, and Clearing
Initiate a Force Switch for All Circuits on a Path Protection Span
This procedure forces all circuits in a path protection from the working span to the protect. It is used to
remove traffic from a card that originates or terminates path protection circuits.
Caution The Force command overrides normal protective switching mechanisms. Applying this command
incorrectly can cause traffic outages.
Caution Traffic is not protected during a Force protection switch.
Step 1 Log into a node on the network.
Step 2 In node view, choose Go to Network View from the View menu.
Step 3 Right-click a network span and choose Circuits.
The Circuits on Span dialog box shows the path protection circuits, including circuit names, locations,
and a color code showing which circuits are active on the span.
Step 4 Click the Perform Path Protection span switching field.
Step 5 Choose Force Switch Away from the drop-down list.
Step 6 Click Apply.
Step 7 In the Confirm Path Protection Switch dialog box, click Yes.
Step 8 In the Protection Switch Result dialog box, click OK.
In the Circuits on Span dialog box, the switch state for all circuits is FORCE. Unprotected circuits do
not switch.
Initiate a Manual Switch for All Circuits on a Path Protection Span
This procedure manually switches all circuits in a path protection from the working span to the protect.
It is used to remove traffic from a card that originates or terminates path protection circuits.
Caution The Manual command does not override normal protective switching mechanisms.
Step 1 Log into a node on the network.
Step 2 Right-click a network span and choose Circuits.
The Circuits on Span dialog box shows the path protection circuits, including circuit names, locations,
and a color code showing which circuits are active on the span.
Step 3 Click the Perform Path Protection span switching field.
Step 4 Choose Manual from the drop-down list.
Step 5 Click Apply.
Step 6 In the Confirm Path Protection Switch dialog box, click Yes.
Step 7 In the Protection Switch Result dialog box, click OK.