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Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 2 Alarm Troubleshooting
2.8.2 Protection Switching, Lock Initiation, and Clearing
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 Protection Port 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.
Clear a 1+1 Protection Port Force or Manual Switch Command
Note
If the 1+1 protection group is configured as revertive, clearing a Force switch to protect (or working)
moves traffic back to the working port. In revertive operation, the traffic always switches back to
working. There is no revert to protect. If ports are not configured as revertive, clearing a Force switch to
protect does not move traffic back.
Note
If the Force Switch was user-initiated, the reversion occurs immediately when the clear command is
issued. The five-minute WTR period is not needed in this case. If the Force was system-initiated, allow
the five-minute waiting period (during WTR) before the reversion occurs.
Step 1
In node view, click the
Maintenance > Protection
tabs.
Step 2
In the Protection Groups area, choose the protection group containing the port you want to clear.
Step 3
In the Selected Group area, choose the port you want to clear.
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