Configuration Guide for Cisco Optical Site Manager, IOS XR Release 26.x.x

Enable proactive protection

Updated: October 14, 2026

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Use this procedure to enable proactive protection for transponder and muxponder cards in Cisco Optical Site Manager. The settings define BER thresholds and monitoring windows that trigger or remove proactive protection.

Use this task to modify the proactive protection settings of the card.

Proactive protection uses BER threshold and monitoring-window settings to determine when protection is triggered and when protection is removed.

Before you begin

Follow these steps to enable proactive protection.

Procedure

Click the Provisioning > Proactive Protection tabs.

Modify the settings described in this table.

Table 1. Proactive protection regen settings
Parameter	Description	Options
Port	Display only. Displays the port name.	Not applicable.
Trigger Threshold	Sets the maximum BER threshold to trigger proactive protection.	1E-3 9E-2 to 1E-2 9E-3 to 1E-3 9E-4 to 1E-4 9E-5 to 1E-5 9E-6 to 1E-6 9E-7 to 1E-7
Trigger Window (ms)	Sets the duration when BER is monitored before triggering proactive protection. The trigger window value must be a multiple of: 10 ms for trigger thresholds between 1E-3 and 6E-6. 100 ms for a trigger threshold between 5E-6 and 1E-7. The trigger window must be less than or equal to 500 ms for trigger thresholds between 1E-3 and 6E-6. The trigger window must be less than or equal to 3900 ms for trigger thresholds between 5E-6 and 1E-7.	Time in milliseconds.
Revert Threshold	Sets the revert threshold value of BER. Note The revert threshold settings must be less than the trigger threshold values.	1E-4 9E-3 to 1E-3 9E-4 to 1E-4 9E-5 to 1E-5 9E-6 to 1E-6 9E-7 to 1E-7 9E-8 to 5E-8
Revert Window (ms)	Sets the duration when BER is monitored for settings that are less than the revert threshold value before proactive protection that is provided to the router is removed. The revert window value must be at least 2000 ms and a multiple of: 10 ms for a revert threshold of 1E-4 to 6E-7. 100 ms for a revert threshold of 5E-7 to 5E-8. The revert window must be less than or equal to 3900 ms.	Time in milliseconds.
Enable Proactive Protection	Enables proactive protection.	Disabled FRR Proactive Protection Pre-FEC PSM Proactive Protection

Click Apply.

The proactive protection settings are applied to the card.

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