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After-error recovery method of transmission equipment card software on-line update

A single-board software and recovery method technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of inter-board communication port failure, incorrect software, business interruption, etc., to reduce maintenance costs and avoid long-term business. Time interruption, the effect of improving reliability

Inactive Publication Date: 2007-10-03
南京创码科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The traditional online software upgrade method has great risks: if there is a problem with the upgrade software, the network management center will lose control of the board, that is, the currently running software can no longer respond to the normal upgrade command issued by the network management center.
For example: the software itself is incorrect, and it will be reset immediately after being booted; or after the newly upgraded software is activated, after a period of operation, the inter-board communication port fails, and the single board can no longer receive and process commands from the network management center. ; or the single board software runs to death, etc., the result will be disastrous
In the transmission equipment, once the remote upgrade fails, the business may be interrupted, and maintenance personnel must be sent to the engineering site to solve the problem. Obviously, this situation cannot be tolerated

Method used

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  • After-error recovery method of transmission equipment card software on-line update
  • After-error recovery method of transmission equipment card software on-line update

Examples

Experimental program
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Effect test

no. 1 example

[0027] As shown in FIG. 1 , the system environment applied in this embodiment is composed of a main control board and N single boards (N can also be equal to 1), and the main control board and the single boards communicate through the inter-board communication port. In particular, there is a reset signal line and a forced upgrade control signal line connected between the main control board and the EPLD (Erasable Programmable Logic Device) of each board, which are used to control the reset operation of the single board and force the software upgrade operate.

[0028] The storage space of the main control board should be large enough so that the software of all single boards can be stored on the main control board. At present, the main control board of transmission equipment generally uses large-capacity Flash or Flash cards as storage media, which can meet this requirement without adding any cost.

[0029] In terms of software, the BOOT software cooperates with the main contro...

no. 2 example

[0040] In practical applications, in order to ensure the reliability of board reset, board reset is generally performed in the form of bus coding. FIG. 2 is a schematic diagram of hardware connection of this embodiment. The hardware part is also composed of a main control board and multiple single boards. However, the main control board controls the reset operations of multiple single boards in the form of a bus. When the main control board wants to reset a certain board, it only needs to send the address code + reset type code + check code to the bus. All the boards will receive this information and analyze the address code. If the address matches, Just read the reset type and complete the corresponding reset operation.

[0041] In this embodiment, by means of the reset bus between the main control board and each board, a special reset command is used to achieve the purpose of forcing the software upgrade of the board to restore the control of the board, without sending Bo...

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Abstract

The disclosed method comprises: when out of control to the software led by error upgrade on-line, the network management center recovers the opposite software in master control board to the usable or upgraded one firstly; then, it sends command to the board for upgrade forcedly; after receiving the command, the board sends rest signal to the single board and enables the upgrade control signal; the single board resets immediately to run BOOT software to decide whether the signal effective; if yes, it erasures the work area in the board memory area and sets the forced upgrade control signal on null state; then, it completes the download and storage for upgrade, and guides to run the new software. This invention can recover the out-of-control completely and immediately.

Description

technical field [0001] The invention relates to an online software upgrade technology in the field of embedded systems, and more specifically, relates to a safety recovery method after an error occurs in the online upgrade of single-board software of a transmission device. Background technique [0002] Among embedded system devices, due to changes in requirements or defects in the software itself, software upgrades are a very common phenomenon. In order to reduce maintenance costs and improve work efficiency, online software upgrades should generally be used as much as possible. [0003] As a kind of embedded system equipment, transmission equipment generally consists of a main control board and multiple single boards. The main control board is special, and the network management center can directly communicate with the main control board to complete the online software upgrade of the main control board. The online upgrade of single-board software is different. The upgrade...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445G06F11/00H04L12/00
Inventor 余国锋
Owner 南京创码科技有限责任公司
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