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

Abstract

In the present invention, by constructing a passive optical distribution node, multiple servers connected to the same passive optical distribution node form a computing cluster, and the computing cluster is used as a basic unit to form a data center electro-optical hybrid double-layer access network to realize data center The network access function of the internal server. Through the passive optical distribution node, the traffic aggregation of m servers in a computing cluster is realized, and the high link utilization rate of the connection link between the aggregation switching interface of the passive optical distribution node and the switching interface of the inter-cluster switch is realized; the computing cluster can be passed through The intra-cluster channel realizes direct communication of intra-cluster servers without forwarding by electrical switching equipment, which reduces the forwarding delay of inter-cluster data communication; the network of the present invention can greatly reduce the number of electrical switching equipment in the access layer network, reduce network power consumption, simplify The complexity of the layout and wiring of the upper network; at the same time, the server's dual transceiver network interface card is equipped with tunable transceivers, which can flexibly configure network bandwidth according to 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 ...

Images