Wavelength division multiplexing technology-based metropolitan area network system

Abstract

The invention relates to a wavelength division multiplexing technology-based metropolitan area network system, which consists of wavelength division multiplexing equipment and an IP metropolitan area network. The wavelength division multiplexing equipment takes an IP as a core and is distributed in a core, backbones, convergent nodes and access nodes of the IP metropolitan area network. A router in the IP metropolitan area network is directly in wavelength connection with the wavelength division multiplexing equipment. The router is directly connected to a wavelength division multiplexing optical fiber by a wavelength division multiplexing coupler. 1+1 optical channel protection, a two-fiber bidirectional optical channel shared protection ring, a two-fiber bidirectional optical multiplexing section protection ring and subnetwork connection protection are adopted on an optical layer. The 1+1 optical channel protection, 1+1 multiplexing section protection and OTS-based 1+1 line protection are adopted on the optical layer. Subwavelength protection is provided on an electric layer. The wavelength division multiplexing technology-based metropolitan area network system completes service engineering of the network by using an appointed wavelength as bypass or being directly connected on an IP layer.

Description

Technical field: [0001] The invention relates to the field of electricity, in particular to communication technology, in particular to a metropolitan area network system based on wavelength division multiplexing technology. Background technique: [0002] In the prior art, IP MAN, as an extension of the Internet in cities, is an open integrated network platform that can provide services such as voice, image, data, multimedia, IP access, and various value-added and intelligent services. Its network structure is generally: [0003] The backbone layer is based on IP over SDH / ATM or optical fiber direct connection, adopts gigabit or terabit line-speed routers, or large-capacity ATM switches, provides high-speed core switching functions and fast routing processing functions, and meets the complex routing protocol support of the core network , strategy distribution, etc. [0004] The aggregation layer mainly completes service aggregation and IP exchange processing, and is the ter...

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Problems solved by technology

[0011] The purpose of the present invention is to provide a kind of metropolitan area network system based on wavelength division multiplexing technology, described this metropolitan area network system based on wavelength division multiplexing technology will solve the lack of effective protection of IP metropolitan area network in the prior art, The maximum bandwidth of a single optical fiber transmission depends on the device port, which is a technical problem of wasting optical fiber and pipeline resources

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