Topology discovery method, device and multi-service transmission network system

Abstract

The embodiment of the application provides a topology discovery method, a device and a multi-service transmission network system, belonging to the field of communication technology. The method comprises the following steps of: acquiring a protocol message sent from a central MSTP device; obtaining a logical channel identifier and a device identifier from the protocol message; storing the logical channel identifier and the device identifier as corresponding relationships. In this method, an access device at the center end can obtain the logical channel identifier and the device identifier corresponding to the access device at the branch end, so that the corresponding relationship between the logical channel identifier and the device identifier stored by the access device at the center end and the MSTP device at the center end can be kept consistent. When the logical channel parameters stored in the central MSTP equipment are changed, the central access equipment can be changed in time and keep consistent with the central MSTP equipment, so as to ensure the correctness of network data transmission, and make the network change, maintenance and fault elimination more efficient and convenient.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, relates to a topology discovery method, device and multi-service transmission network system. Background technique [0002] In the multi-service transport network, generally two types of main equipment are involved, one is the multi-service transport platform (Multi-Service Transport Platform, referred to as MSTP) equipment of the operator's bearer network, which provides network access services for users, The other type is the user's data network equipment, which provides users with access services and aggregates user business data to access the operator's bearer network through MSTP equipment. [0003] There is a typical networking model in the multi-service transmission network, which is point-to-multipoint topology. In this model, a user access device accesses the carrier network through an MSTP device channel, and connects with other users Devices (othe...

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Problems solved by technology

[0005] The logical channel parameters configured on the access device at the center and its interconnected MSTP device must be consistent to ensure correct communication. Since the access device at the center and the MSTP device belong to two different management users, the access When configuring the logical channel parameters between the device and the MSTP device, it needs to be manually negotiated and then configured. If the subsequent logical channel parameters change, both parties must manually notify them before reconfiguring. The access device at the center and the MSTP device cannot be consistent in time, resulting in inconsistency between the logical channel parameters of the two, which in turn leads to network data transmission errors

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