This boolean specifies whether grace-period notifications are sent to remote CFM peers; setting it from true to false during an outage immediately clears all in-progress grace notifications and suppresses further ones, while setting it from false to true only applies to future outages, not ones already in progress. An admin enables this to tell CFM peers a maintenance operation on this node is planned and shouldn't be treated as a real fault, reducing false alarms during controlled maintenance windows. Because toggling it doesn't retroactively affect an outage already underway, it needs to be enabled before a planned maintenance event starts, not during it.