Wavelength switching-based data center optical network communication method and system

Abstract

The invention discloses a wavelength switching-based data center optical network communication method and a system. The communication method comprises steps that when a first data switching device receives to-be-sent business data, a second data switching device related to goal nodes of the business data is determined; the first data switching device chooses an upstream port P to send the business data with the corresponding wavelength to an annular optical fiber OF related to the first data switching device and the second data switching device in a corresponding optical fiber via a related wavelength switching light cross device; and when an upstream port P' of the second data switching device receives the business data from the annular optical fiber OF via the related wavelength switching light cross device, the business data is sent to the goal nodes via a downstream port. According to the invention, by finishing data communication among servers via a signal-layer switch network, OEO and forwarding cost brought by a multi-layer switch network is reduced, thereby achieving manageable connection and flexible adjustment among switches and improving flexibility and reliability of the network.

Description

technical field [0001] The invention relates to the communication field, in particular to a data center optical network communication method and system based on wavelength switching. Background technique [0002] The data center (IDC) is an important part of the Internet. With the rise of technologies such as big data and cloud computing, data has gradually become a core element in the Internet ecological chain, and the importance and status of the data center are also rising. Related technologies have gradually become popular. [0003] In the data center, a layered two-layer (Layer 2) switching network is usually used to complete data communication between servers and between servers and IDC data export devices, such as figure 1 shown. The top-of-rack switch (TORSwitch) at the access layer is responsible for the data communication between the servers within the rack, and is responsible for forwarding the data communication between the servers in this rack and other rack s...

AI Technical Summary

Problems solved by technology

[0005] 1. Server data communication between racks needs to be forwarded by at least three devices (two top-of-rack switches and one aggregation layer switch), which brings high OEO (Optical Electrical Optical, optical-electrical-optical) regeneration and forwarding costs

[0006] 2. With the continuous expansion of the scale of the data center, the number of servers and various switch devices and ports is increasing rapidly. According to this networking structure, each pair of port connections needs to occupy a pair of optical fibers (even if a single-fiber bidirectional Transmission technology, a pair of ports connected with one optical fiber); a large number of optical fiber connections lack software management capabilities and adjustment flexibility, making subsequent expansion and adjustment very difficult

[0007] 3. In order to manage the optical fiber connection between data center equipment, some companies have also launched optical crossover (OXC) equipment based on large-scale optical switching, which can provide flexible configuration and management of tens or even hundreds of optical fiber connections; The cost is very high, and the optical cross-connect (OXC) equipment becomes a single point of failure, affecting network security

[0008] There is no good solution to the above-mentioned problems existing in the internal networking of the data center (IDC). As the scale of IDC continues to expand, these problems will become more and more prominent.

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