A method of automatic switching for primary standby equipment

Abstract

The invention provides a method of automatically switching master and backup devices, setting different states of transmission device in data transmission ring network to ensure backup node automatically switches states of its own parameters as the master device is invalid, and making the backup device replace the master device to continue working, thus realizing the protection of the master device data and ensuring the stability and safety of the data transmission ring network. All the master device-backup device switching actions in the data transmission ring network are automatically completed and because it need not remain specific bandwidth in advance, it reduces the cost; at the same time, it has no other extra requirements on other devices in the network, and thus meets the universal conditions, and its protection is transparent for the user. It is simple and reliable, it does not need artificial interference in the switching course and the switching can be completed with 50ms.

Description

technical field [0001] The invention relates to the technical field of master-standby switchover, in particular to a method for automatic switchover of master-standby devices on a ring network. Background technique [0002] With the development of the communication industry, people's study, life and work are increasingly inseparable from the network. figure 1 Shown is a schematic diagram of data access to the Internet. The data of the user accessing the Internet is first connected to the access server, such as a digital subscriber line access server (DSLAM) and other equipment. After the user's data is processed by the access server, it enters the data transmission ring network, and the user's data The data is transmitted to the server, such as broadband access server (BAS), core switch and other equipment. After the server completes relevant authentication and other work for user data, it provides access to the Internet. The network management center completes the configur...

AI Technical Summary

Problems solved by technology

[0005] The defect of the above scheme is that although the switching process of the active and standby BAS can be completed automatically, since each DSLAM needs to provide two sets of optical cables to be connected to the active and standby BAS respectively, and each BAS is directly connected to all DSLAMs, therefore, not only The waste of optical cable resources is large, and the port resources of the BAS are seriously wasted. If the distance between the BAS and the DSLAM is long, and there is no aggregation process between them, the waste of optical cable resources is particularly prominent, resulting in some optical cable resources. Nervous cities cannot adopt the scheme

[0007] The defect of the above scheme is that: because the switching process requires manual intervention, not only the service recovery time is very long, but also there may be other online accidents caused by improper operation. At the same time, because each DSLAM needs to occupy two paths to transmit the received Protected business wastes a lot of transmission bandwidth

Images