GE-PON technology is a broadband network solution using optical medium to connect OLT (Optical Line Termination), ONU (Optical Network Unit) and ONT (Optical Network Termination). Generally, the broadcast method is used in the downstream and a TDMA (Time Division Multiple Access) protocol is used in the upstream. When packets are transmitted from OLT to ONU (ONT), LLID is used to transmit the packets to ONU (ONT).