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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
The lock-on or lockout is cleared.
Initiate an ONS 15310-MA SDH 1:1 Card Switch Command
Note The Switch command only works on the Active card, whether it is working or protect. It does not work
on the Standby card.
Step 1 In node view, click the Maintenance > Protection tabs.
Step 2 Click the protection group that contains the card you want to switch.
Step 3 Under Selected Group, click the active card.
Step 4 Next to Switch Commands, click Switch.
The working slot should change to Working/Standby and the protect slot should change to
Protect/Active.
Initiate a Force Switch for All Circuits on a Path Protection Span
This procedure forces 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 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 SNCP 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 SNCP 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.
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