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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
In the Circuits on Span dialog box, the switch state for all circuits is Manual. Unprotected circuits do
not switch.
Initiate a Lockout for All Circuits on a Protect Path Protection Span
This procedure prevents all circuits in a path protection working span from switching to the protect span.
It is used to keep traffic off cards that originate or terminate path protection circuits.
Caution The Lock Out of Protect command overrides normal protective switching mechanisms.
Step 1 Log into a node on the network. If you are already logged in, continue with Step 2.
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 Lock Out of Protect 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.
In the Circuits on Span dialog box, the switch state for all circuits is FORCE. Unprotected circuits do
not switch.
Clear an External Switching Command on a Path Protection Span
Note If the ports terminating a span are configured as revertive, clearing a Force or Manual switch to protect
moves traffic back to the working port. If ports are not configured as nonrevertive, clearing a Force
switch to protect does not move traffic back.
Step 1 Log into a node on the network. If you are already logged in, continue with Step 2.
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 Initiate a Force switch for all circuits on the span:
a. Click the Perform Path Protection span switching field.
b. Choose Clear from the drop-down list.
c. Click Apply.
d. In the Confirm Path Protection Switch dialog box, click Yes.
e. In the Protection Switch Result dialog box, click OK.