A flag to indicate whether management route notifications
have been suppressed in the current time interval specified
by the cgrtMgmtNotifWindowTime object.
'true' Indicates that the device has suppressed the sending
of ciscoGrtDestStateChange notifications for the
remainder of the time interval.
'false' Indicates that the device has not suppressed the
sending of ciscoGrtMgmtStateChange notifications in
the current time interval.