Signaling cascading method of exchange connection in automatic exchange optic/transport network

Abstract

Each network edge node maintains the two tablets of the connection map: the entrance and exit. With being received the interface message of the user network sent by the client device, the relation between the corresponding network internal connection and the local connection of the user network interface are created, deleted and looked up on the connection map. The interface message of the user network is turned to 'private object', which is sent out together with the network internal signaling. With the signaling message with the interface object of the corresponding user network being received, the remote edge nodes create, delete or look up corresponding local connection of the user network interface, which is sent to client devices.

Description

Technical field: [0001] The invention relates to a signaling cascading method for switching connection in an automatic switching optical network or automatic switching transmission network, belonging to the technical field of optical communication and network. technical background: [0002] A traditional telecommunication network consists of a transmission plane and a management plane, and is a typical central control system. Automatic switching optical network or automatic switching transmission network introduces a distributed control plane between the two planes to realize automatic topology discovery, route calculation and dynamic establishment, removal and maintenance of end-to-end connection functions. [0003] At present, there are mainly three organizations working on the standardization of ASON: the International Telecommunication Union standard defines the requirements and framework structure of ASON; the Internet Engineering Task Force has proposed many drafts, co...

AI Technical Summary

Problems solved by technology

However, neither the Optical Internet Forum nor the Internet Engineering Task Force has described the switching connection specified by the International Telecommunication Union, that is, the end-to-end connection process initiated by the user.

There is no bridge between the user network interface of the Optical Internet Forum and the general multi-label switching protocol of the Internet Engineering Task Force. One switching connection is connected by the user network interfaces at the two ends of the source and sink plus the middle network internal label switching channel. Three isolated channels Composition, unable to realize end-to-end user signaling connection

If the method of direct communication between the network devices of the source and sink user network interfaces, or the method of notification through the management plane, a new signaling protocol will be introduced, which will increase the complexity of the realization and deployment of the automatic switching optical network

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