An Ethernet optical transmission link with converged output of a single Ethernet port at the central end

Abstract

The invention discloses an Ethernet optical transmission link converged and output by a single Ethernet port at a central end, relates to the field of optical communication, and aims to provide an Ethernet optical transmission link with low cost and small equipment volume. Technical gist of the present invention: including the farthest node, the middle node of the link and the center end; the farthest node is used to encapsulate the monitoring image output by the local monitoring camera into an Ethernet data packet and output it to the optical fiber for transmission; the middle node of the link is used to After receiving the Ethernet data output by the previous remote node and the monitoring image output by the local surveillance camera, the two channels of data are multiplexed into one Ethernet data output and transmitted to the optical fiber; the central end is used to receive the Ethernet data transmitted from the node on the optical fiber Network data, demultiplex it to obtain Ethernet data packets of each node, and then multiplex the Ethernet data packets of each node to obtain one Ethernet data, and the multiplexed Ethernet data output to the center The same port of the end Ethernet switch chip.

Description

technical field [0001] The invention relates to the field of optical communication. Background technique [0002] At present, with the trend of high-definition images, network high-definition cameras have become the mainstream image acquisition method. Accordingly, it is necessary to build an Ethernet optical fiber transmission network throughout every corner of the city to transmit these unattended outdoor camera images to the monitoring center. When the multi-node (hundreds of nodes) optical fiber transmission service has independent physically isolated 100M Ethernet channels, the output of the center terminal needs to tandem and output hundreds of independent physically isolated 100M Ethernet channels. figure 1 What is shown is the Ethernet optical transmission link for multi-node access in the prior art. [0003] The original technical solution is to connect the PHY ports or MII ports of all nodes (for example, corresponding to 100 remote nodes) to a sufficiently large ...

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Problems solved by technology

[0004] The disadvantage of this method is that tens or even hundreds of Ethernet switching chips with switching ports are required at the aggregation end, which not only has high technical complexity, but also high cost and large equipment volume.

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