Method for designing optical fiber bus based on Ethernet passive optical network

Abstract

The invention relates to a method for designing an optical fiber bus based on an Ethernet passive optical network. The method includes a configuration method of the Ethernet passive optical network, a three-tier exchange mechanism, a topological graph of optical fiber bus design, a bus controller, access units, a photovoltaic conversion module, optical dividers and optical fibers. In the prior art, foreign standards are adopted for all technologies related to the optical fibers, and due to the fact that the technologies and chips used for realizing the technologies belong to an embargo range which the west imposes on China, China can not directly adopt the standards. The novel method replaces an abroad homogeneous technology, and a set of autonomous standard systems of optical fiber bus products is established in China. Therefore, the optical fiber bus technology can be widely applied to the fields of aerospace, aviation, a military industry, an electronic industry and the like.

Description

technical field [0001] The invention belongs to the field of electronic information and communication technology, and relates to a design method and principle of an optical fiber bus based on an Ethernet passive optical network. Background technique [0002] 1. Ethernet Passive Optical Network (EPON) [0003] Ethernet passive optical network is a network that uses optical fiber as the transmission medium and Ethernet protocol as the upper layer transmission protocol. It consists of four parts: Optical Line Terminal (OLT), Optical Network Unit (ONU), Passive Optical Splitter (POS), and Optical Line. The optical fiber line terminal OLT completes the data exchange and control between each access ONU; the optical network unit ONU completes the transfer with the user equipment, and the optical splitter completes the branching of the optical path; the optical fiber is the channel for data transmission; the Ethernet passive optical network It is a new type of broadband access tec...

AI Technical Summary

Problems solved by technology

A Layer 2 switch can only connect computers with IP addresses in the same subnet. If the IP addresses of computers are in different subnets, even if they are connected to the same switch port, they cannot communicate with each other even though they are close at hand, because now The computers communicate with each other through IP addresses, and the switch does not recognize the IP addresses

However, it should be noted that the Layer 3 switch cannot completely replace the router, because it is mainly for communication between VLANs in two different subnets, rather than for complex path selection for data transmission.

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