Passive optical distribution node and electro-optical hybrid double-layer access network

A technology for distributing nodes and passive light, applied in electrical components, wavelength division multiplexing systems, optical multiplexing systems, etc., can solve the problems of occupying the switching bandwidth of the top-of-rack switch and not being able to realize direct communication, and achieve high-link road utilization and achieve efficient utilization

Active Publication Date: 2020-02-18
SOUTHEAST UNIV
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  • Claims
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Problems solved by technology

The data communication between servers in the rack needs to be forwarded by the top-of-rack switch, which cannot realize direct communication and occupies a large amount of switching bandwidth of the top-of-rack switch

Method used

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  • Passive optical distribution node and electro-optical hybrid double-layer access network
  • Passive optical distribution node and electro-optical hybrid double-layer access network
  • Passive optical distribution node and electro-optical hybrid double-layer access network

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0029] figure 1 It is a schematic structural diagram of a passive optical distribution node according to the present invention, including an optical coupler, an optical splitter, a first optical circulator, a second optical circulator, a first narrowband filter, and a second narrowband filter, wherein, The optical coupler has m input ports and 1 output port, the optical splitter has 1 input port and m output ports, the first optical circulator and the second optical circulator have respective first ports, second port and the third port, the first narrowband filter and the second narrowband filter have their own first port and second port, only reflect the channel wa...

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Abstract

According to the invention, a passive optical distribution node is constructed, so that a plurality of servers connected to the same passive optical distribution node form a calculation cluster, the calculation cluster is used as a basic unit to form a data center electro-optical hybrid double-layer access network, and the network access function of the servers in the data center is realized. Flowconvergence of m servers in one calculation cluster is achieved through passive optical distribution nodes, and the high link utilization rate of a connecting link of a passive optical distribution node convergence switching interface and an inter-cluster switch switching interface is achieved. The calculation clusters can realize direct communication of servers in the clusters through channels in the clusters without forwarding of electric switching equipment, so that the forwarding time delay of inter-cluster data communication is reduced; the network provided by the invention can greatly reduce the number of access layer network electric switching equipment, reduce network power consumption and simplify the complexity of layout and wiring of an upper layer network; Meanwhile, the tunable transceiver is configured for the dual-transceiving network interface card of the server, so that the network bandwidth can be flexibly configured according to the real-time network load.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a passive optical distribution node and an electro-optical hybrid double-layer access network formed by it. Background technique [0002] The traditional data center network structure is a "client-server" business-oriented "access-aggregation-core" three-layer network architecture, which is suitable for a traffic model in which "south-north" traffic is the main body. With the rise of various cloud computing services, cloud computing centers are deployed on a large scale. According to Cisco's forecast, by 2021, cloud data centers will handle 94% of workloads and computing instances, while traditional data centers will only account for 6%. At the same time, because cloud computing services need to exchange a large amount of data between servers in the data center, the "east-west" traffic in the data center has increased significantly, and has become the main body of data ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02
CPCH04J14/0278H04Q11/0067
Inventor 孙小菡郑宇戈志群叶晓凯
Owner SOUTHEAST UNIV
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