Method for ensuring safety and success of updating of line-card software in distributed OLT system

Abstract

The invention provides a method for ensuring safety and success of updating of line-card software in a distributed OLT system. The method includes the steps of adding an updating mirror image head portion to an updating mirror image file, verifying the content of the updating mirror image head portion and the content of an updating mirror image after the updating mirror image is well downloaded through a line card, then, conducting backup and verification on the mirror image running in the line card, and finally conducting backward read verification on the burnt mirror image on the line card. According to the method, correctness of the updating mirror image can be ensured, the problem that the updating process is finally unsuccessful due to the fact that updating is continued when the updating mirror image is downloaded and then changed due to the network transmission problem can be solved, the problem that the software system of the whole line card can not roll back after the burning motion is unsuccessful due to the problem of the mirror image can be solved, and the problem that the FLASH motion is successful while the burning of the mirror image is incorrect due to other causes can be solved.

Description

Technical field [0001] The present invention involves a method of ensuring the security and success of the line card software in a distributed OLT (light circuit terminal) system. Background technique [0002] In distributed OLT devices, business management is mainly realized on the main control disk, and the specific functions of the business are mainly realized on various business line cards.In order to meet the needs of users or modify their own management and business defects, it is necessary to upgrade various line cards to ensure that the defects are repaired and the business is met. [0003] In the software upgrade and maintenance of the online card, the software upgrade mirror of the line card is finally loaded from the external server to the specific FLASH (flashing) partition of the line card.When the wire card starts the mirror again, load and start from a specific Flash partition. [0004] like figure 1 Show, in the existing distributed OLT communication system, the m...

AI Technical Summary

Problems solved by technology

[0006] 1. If the upgrade image of the line card is replaced by any file in any format, that is, an illegal upgrade image, when this image is downloaded from an external server for upgrade, the upgrade of the line card will fail, making the line card unable to use the correct image Normal start

[0007] 2. In the process of downloading the image from the external server to the main control disk, network data transmission is required. Due to the uncertainty in the network data transmission process, the upgrade image may be modified, resulting in the upgrade image downloaded to the main control disk. already incorrect

Moreover, the image between the main control panel and the line card is also downloaded through network transmission, which may cause errors in the image finally downloaded to the line card, and network transmission errors are uncontrollable

[0008] 3. It is also difficult to control whether the image downloaded to the line card is programmed correctly when programming to the FLASH specific partition of the line card

Because the impact of other functional module tasks during the programming process or the instability and fragility of its own FLASH programming process may cause the image to be programmed incorrectly, this makes the image loaded to a specific FLASH partition start up when it starts again. fail

[0009] 4. Due to some reasons of the image file itself, for example, the image is too large and exceeds the space that a specific FLASH partition can accommodate, so that the programming operation fails, causing the entire system to fail to start at the next startup

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