Cause why IPA is automatically enabled after being disabled

The possible causes of the IPA function abnormality are as follows:
1. The IPA protection group does not have a detection board. When only auxiliary detection boards are configured, all the auxiliary detection boards report an alarm triggering IPA.
2. One or more IPA function parameters are incorrectly set.
If the issue persists after you exclude the preceding causes, disable the IPA function by setting the IPA Status parameter to Disabled in the IPA Management window on the NMS. In the WDM Interface window of the corresponding board, confirm that Laser Status of the transmit optical port of Laser Control Board is set to On .

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