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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Frequently Used Alarm Troubleshooting Procedures
Initiate a Manual Switch for All Circuits on a Path Protection Span
This procedure manually switches all circuits in a SNCP from the working span to the protect. It is used
to remove traffic from a card that originates or terminates SNCP 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 SNCP 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.
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 SNCP working span from switching to the protect span. It is
used to keep traffic off cards that originate or terminate SNCP 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 SNCP 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.
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