Leased circuit-based wide-area optical network and topology adjustment method and device

Abstract

The application provides a wide area optical network based on a leased circuit, comprising more than three local networks, a leased circuit, and zero layer optical switches. The number of the zero layer optical switches is at least the same with that of the local networks. Each zero layer optical switch is arranged between one local network and the leased circuit. The invention further provides a wide area optical network topology adjustment method and a device based on a leased circuit. The method includes the following steps: determining a network transmission line to be adjusted, a zero layer optical switch to be adjusted and a port to be adjusted of the zero layer optical switch to be adjusted according to the topology adjustment demand of the wide area optical network; and performing butt-joint switching on the port to be adjusted of the zero layer optical switch to be adjusted. Through the wide area optical network and the topology adjustment method based on a leased circuit provided by the application, the topology and transmission line of the wide area optical network can be dynamically adjusted on the basis of a leased circuit without right to control the optical network.

Description

technical field [0001] The application relates to the field of optical fiber communication, in particular to a wide area optical network based on leased circuits. The present application also relates to a leased circuit-based wide area optical network topology adjustment method and device. Background technique [0002] In the wide-area optical network built by enterprises, in order to optimize the network load and balance local traffic, there is often a need to reconfigure the topology of the network structure. When the optical network itself is controllable, this requirement can be met by directly adjusting the routing control equipment of the corresponding optical network itself. However, in most cases, the enterprise's wide-area optical network is not based on a controllable optical network, but is carried by renting a circuit from a third-party Internet service provider. Because the Internet service provider does not open its optical transmission network, this leased c...

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Problems solved by technology

[0003] The present application provides a leased circuit-based wide-area optical network and a leased-circuit-based wide-area optical network topology adjustment method and device to solve the problem that the wide-area optical network cannot be dynamically adjusted on the basis of a leased circuit without the right to control the optical network. Problems with network topology and transmission lines

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