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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 1+1 Protection Port Force Switch Command
This procedure switches 1+1 protection group traffic from one port in the group to the other using a
Force switch.
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.
Note A Force command switches traffic on a working path even if the path has SD or SF conditions. A Force
switch does not switch traffic on a protect path. A Force switch preempts a Manual switch.
Step 1 In node view, click the Maintenance > Protection tabs.
Step 2 In the Protection Groups area, select the protection group with the port you want to switch.
Step 3 In the Selected Groups area, select the port belonging to the card you are replacing. You can carry out
this command for the working or protect port. For example, if you need to replace the card with the
Protect/Standby port, click this port.
Step 4 In the Switch Commands area, click Force.
Step 5 Click Yes in the Confirm Force Operation dialog box.
Step 6 If the switch is successful, the group says “Force to working” in the Selected Groups area.
Initiate a 1+1 Manual Switch Command
This procedure switches 1+1 protection group traffic from one port in the group to the other using a
Manual switch.
Note A Manual command switches traffic if the path has an error rate less than the signal degrade. A Manual
switch is preempted by a Force switch.
Step 1 In node view, click the Maintenance > Protection tabs.
Step 2 In the Protection Groups area, select the protection group with the port you want to switch.
Step 3 In the Selected Groups area, select the port belonging to the card you are replacing. You can carry out
this command for the working or protect port. For example, if you need to replace the card with the
protect/standby port, click this port.
Step 4 In the Switch Commands area, click Manual.
Step 5 Click Yes in the Confirm Force Operation dialog box.
Step 6 If the switch is successful, the group now says “Manual to working” in the Selected Groups area.