Synchronous/asynchronous serial port backup system, device and switch method
An asynchronous serial port and backup technology, applied in the field of network communication, can solve the problems of manual switching difficulties, business can not be completed, affecting work efficiency, etc., to achieve the effect of enhancing reliability, maintaining continuity, and improving work efficiency
Inactive Publication Date: 2008-01-02
NEW H3C TECH CO LTD
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Problems solved by technology
[0004] The existing technology has the following disadvantages: when the synchronous and asynchronous serial port of the network device 12 connected to the downlink device 13 fails, the network will be interrupted and the business cannot be completed
It is necessary to manually switch the synchronous and asynchronous serial ports on the network device 12 to restore the network and business, but sometimes these devices are placed in inconvenient places, and manual switching is very difficult
Moreover, when the above failure occurs, it is necessary to check the network failure to determine whether it is a synchronous or asynchronous serial port failure, and then manually switch after confirmation, which will inevitably affect work efficiency
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[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] Fig. 2 is the system structural diagram of a kind of synchronous and asynchronous serial port backup of the embodiment of the present invention, is made up of IP network 11, network equipment 21,22, the downlink equipment (hereinafter referred to as downlink equipment) 23,24 with synchronous and asynchronous serial port, wherein Both the downlink devices 23 and 24 have only one synchronous and asynchronous serial port. IP network 11 is connected with network equipment 21, 22 respectively, and a synchronous and asynchronous serial port of network equipment 21 and a synchronous asynchronous serial interface of network equipment 22 lead out a cable respectively, two cables are connected with the same line order, combine into a cable, and downlink The synchronous and asynchronous serial port connection...
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The invention discloses a system with synchronous / asynchronous serial backup, belonging to network communication technique field, comprising a descending device with synchronous / asynchronous serial port and a network device, wherein the network device is provided with at least two synchronous / asynchronous serial ports connected with one synchronous / asynchronous of the descending device, the synchronous / asynchronous serial ports of the network device are backup with each other. The invention also discloses a network device, comprising a checker and a synchronous / asynchronous serial port manager. The invention discloses a method of synchronous / asynchronous serial port switch. The invention can realize synchronous / asynchronous serial port backup, which can automatically and quickly switch synchronous / asynchronous serial ports when the network device has accident, to confirm service continuity.
Description
technical field [0001] The invention relates to the field of network communication, in particular to a synchronous and asynchronous serial port backup system, device and switching method. Background technique [0002] At present, with the continuous development of information technology and network technology, many industries such as civil aviation, postal services, banking, insurance, and electric power use synchronous and asynchronous serial ports for communication. Synchronous and asynchronous serial ports include synchronous serial ports and asynchronous serial ports. The synchronous serial port can generally work in two ways: DTE (dara terminal equipment, data terminal equipment) and DCE (data circuit-terminating equipment, data circuit-terminating equipment). Generally, the synchronous serial port is used as a DTE device and accepts the data provided by the DCE device. clock. Various types of cables can be connected to the synchronous serial port, and the device can ...
Claims
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IPC IPC(8): H04L1/22H04L12/56H04L12/26H04L12/24
Inventor 董辉
Owner NEW H3C TECH CO LTD