100G optical transport network networking method based on metropolitan area network

Abstract

The invention relates to a 100G optical transport network networking method based on a metropolitan area network. The core layer in a metropolitan transport network takes large-particle services as the principal thing and is used for high-speed transmission of different services, and a convergence layer is located between the core layer and an access layer and used for converging various services of the access layer and transporting the services to the core layer in a unified mode, wherein the core layer bears 100G / 400G services, the convergence layer bears 10G / 100G services, and the access layer bears 10G / 2.5G / GE services; bearing networks of a 100G optical transport network system are adopted in the core layer and the convergence layer. Compared with past 10G / 40G OTN and 100G OTN, the 100G optical transport network is capable of bearing more services and providing more kinds of services, is particularly suitable for being applied to the core layer and the convergence layer of the large metropolitan area network, and is capable of increasing bandwidth use ratio and improving networking flexibility.

Description

technical field [0001] The invention relates to the technical field oriented to the network transmission layer, in particular to a method for building a 100G optical transport network based on a metropolitan area network. Background technique [0002] In the traditional telecommunication network, the second-generation digital transmission network based on SDH / SONET, from PDH to SDH, optical fiber transmission is the main signal transmission means, and the network organization is mainly realized at the electrical layer, and SDH technology is processed at the electrical layer of the business Based on VC4-based cross-scheduling granularity, the size of scheduling granularity and capacity growth are limited, which cannot meet the rapid growth of related services, while WDM technology focuses on optical layer processing of services, mainly adopting point-to-point processing methods, lacking Effective network maintenance and management methods are difficult to apply in large-scale...

AI Technical Summary

Problems solved by technology

Among them, the GE / 10G service interface has been commercialized on a large scale in the scope of the metropolitan area network. In view of the current situation of the metropolitan transport network in various regions and the growing demand for large-grained services, and because the 40G WDM system has a relatively large PMD coefficient for optical cables High requirements limit the introduction of ROADM, and the standardization of 400G networking has not yet been unified

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