A mstp switching method and device

Abstract

The invention further provides an MSTP (Multi-Service Transfer Platform) switching method which is applied to network equipment. The method comprises the following steps of: step A, operating an MSTP state machine to execute port character selection and calculating MSTP information of each port on the network equipment; step B, when a network topology is stable, backing up MSTP key data to standby equipment from main equipment; and step C, in a process of switching the main / standby equipment, recovering each port information according to the MSTP key data stored on the standby equipment under the virtual environment; sending a keep-alive message outwards through an appointed port; and allowing a data message to pass through and limiting other ports to sent an MSTP protocol message. When the main / standby equipment is switched, the MSTP state machine is not immediately operated again and the MSTP state machine is operated under the virtual environment; and the problem that the MSTP state machine calculates again and a data service is interrupted can be solved by only allowing the transmission of parts of the protocol message.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method and device for switching an MSTP state machine during active and standby switching. Background technique [0002] The stability of the network is an important basis for measuring the quality of the network. The prerequisite for the application of each new network technology is to ensure network stability. With the development of science and technology, the application scale of the Internet is expanding rapidly. Faced with a more complex network structure and a large number of users, the stability of the network is facing huge challenges, which brings the stability of the network to a new height. [0003] For the stability of the Layer 2 network, it is most important to ensure the loop-free topology of the Layer 2 network to avoid network storms. In the Layer 2 network, various spanning tree protocols or various ring network protocols are usually used to avoid loops in ...

AI Technical Summary

Problems solved by technology

However, when the MSTP protocol encounters unexpected network conditions, such as a sudden situation such as active-standby switchover, it will still cause the MSTP port role to be re-elected

Although the MSTP convergence time is fast, if the current device is used as an aggregation device, because its position in the network is relatively high, short-term topology oscillations are also fatal to data services transmitted on the network.

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