The existing PON protection scheme covers only the optical path between the PON MAC of OLT and the PON MAC of ONU
but not the entire OLT equipment.This paper introduces a new protection solution
which covers the whole OLT equipment.In this new solution
ONU is registered with two OLT equipments at the same time and such information as configuration and status are periodically synchronized between the two OLT’s by means of TCP communication.