Patent ID: 8768163

Claim:
A method of detecting a rogue optical network unit (ONU) in a passive optical network (PON), comprising: configuring parameters for a sleep mode with a plurality of rogue ONU candidates based on an ONT management and control interface (OMCI); detecting an abnormal upstream transmission to determine the plurality of rogue ONU candidates; transmitting a sleep allow message instructing a transition to the sleep mode to each of the plurality of rogue ONU candidates; and detecting the rogue ONU among the plurality of rogue ONU candidates based on upstream transmissions from the plurality of rogue ONU candidates in the sleep mode, wherein the sleep mode includes a dozing mode in which a transmitter of each rogue ONU candidate is turned-on or turned-off and a cyclic sleep mode in which a transmitter and a receiver of each rogue ONU candidate are turned-on or turned-off.