Asking for documentation Is EPON a technology or a device? 20

EPON (Ethernet Passive Optical Network) is a new type of optical fiber access network technology, which uses point-to-multipoint structure, passive optical fiber transmission, and provides a variety of services on top of Ethernet. It uses PON technology at the physical layer, uses the Ethernet protocol at the link layer, and uses the topology of PON to realize Ethernet access. As a result, it combines the advantages of PON technology and Ethernet technology:

Low cost; high bandwidth; Strong scalability, flexible and rapid service reorganization; compatibility with existing Ethernet; Convenient management and much more.

I've just been learning EPON for a month. If you want some basic information on this, I can send it to you, hehe, learn and progress together.

PON, passive optical network. EPON is an Ethernet-based passive optical network, and the data in this network is based on Ethernet encapsulation, which is the IP packet in the middle.

The PON consists of an optical line terminal (OLT), a photosynthetic splitter (spliter), and an optical network unit.

ONU) with a tree-like topology. The OLT is placed at the central office end, which allocates and controls the connection of the channel.

and has real-time monitoring, management and maintenance functions. The ONU is placed on the user side, and the OLT communicates with the ONU.

Connected via a passive photosynthetic splitter.

Passive refers to an ODN (optical distribution network) between an OLT (Optical Line Terminal) and an ONU (Optical Network Unit).

network) does not have any active electronic devices.

PON uses wavelength division multiplexing (WDM) technology to simultaneously handle bidirectional signal transmission, with separate upstream and downstream signals.

with different wavelengths, but in the same fiber. The direction of the OLT to ONU ONT is downward, and vice versa is the upward direction. 1490nm in the downlink direction and 1310nm in the uplink direction.

It is a technology that is not yet suitable for widespread application. Of course, this new technology will require new equipment, collectively known as epon equipment.

The EPON device is a device that implements an important technology of fiber-to-the-home, which is based on Ethernet.

EPON (Ethernet Passive Optical Network), as the name suggests, is an Ethernet-based 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 EFM working group.

In June 2004, the Working Group published the EPON standard, which was incorporated into the 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 access is realized by using the topology of PON. As a result, it combines the advantages of PON technology and Ethernet technology:

Low cost, high bandwidth, strong scalability, compatibility with existing Ethernet, easy management, etc.

To put it simply, the only part that EPON and GPON have in common is their network topology, that is, one-to-many, the downlink is the broadcast mechanism, and the uplink is the TDMA mechanism. As for the structure of the data frame, the way of data reuse, the bandwidth of the uplink and downlink, and the performance of the physical layer, they are all different. Regardless of whether the central office equipment (OLT) or the terminal equipment (ONU) are two different devices.

Low-cost, high-efficiency, high-scalability network equipment...