What is EPON
EPON (Ethernet Passive Optical Network, Ethernet passive optical network), as the name suggests, is based on Ethernet PON technology. It uses a point-to-multipoint structure, passive optical fiber transmission, and provides a variety of services on top of Ethernet. EPON technology is standardized by the IEEE802.3 EFM working group. In June 2004, the IEEE802.3EFM working group released the EPON standard, IEEE802.3ah (which was incorporated into the IEEE802.3-2005 standard in 2005). In this standard, Ethernet and PON technology are combined, PON technology is used at the physical layer, Ethernet protocol is used at the data link layer, and Ethernet topology is implemented using PON topology. Therefore, it combines the advantages of PON technology and Ethernet technology: low cost, high bandwidth, strong scalability, compatibility with existing Ethernet, and easy management
