Hot-plugging detection and treating method

A processing method and hot-swap technology, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve the problems of uninterrupted work, the switch does not support hot-swapping, the system cannot be installed, etc., to achieve the effect of easy installation

Inactive Publication Date: 2004-09-15
HUAWEI TECH CO LTD
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Problems solved by technology

[0003] At present, some switches do not support hot-swapping, or after hot-swapping, the entire system must be restarted, that is, downtime is required, and the system cannot work without interruption; some hot-swapping mechanisms cannot do this. Full recovery of configuration information

Method used

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  • Hot-plugging detection and treating method
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  • Hot-plugging detection and treating method

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Embodiment Construction

[0027] For the detection of hot plugging, two mechanisms are used: interrupt (hard detection) and status report message (soft detection); the processing of hot plugging is only triggered by the registration of the service module, and the interrupt does not trigger the hot plugging process. All hot-plug processing is performed in a new task space, and the priority of this new task is equal to the priority of the device state machine task; when the hot-plug processing is completed, this task exits automatically.

[0028] The detection and processing of hot unplugging are mainly the deletion of configuration information and the extraction and backup of configuration information. When a user physically pulls out a module, the main control board detects an interrupt, and when a module is found to be unplugged through the device state machine (the main control board has not received a heartbeat message from the other party for a period of time), it detects in this interrupt Accordin...

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Abstract

When exchanger is not in down time, the method through message of state reports of interrupter and device status machine detects hot plug. When hot drawing a module, following steps are executed: under state of not influencing normal transferring traffic flow, configuration information relevant to the module is parses and picked up from global configuration information; data link layer, IP route layer and QoS each handling module delete the configuration information, and make backup copy, and clean up status messages of the module. When hot plugging a module, following steps are executed: current NETDEV data structure on main control board is synchronized to the module; based on NETDEV data table, hardware setting is recovered for the module; command for saving global configuration information is executed to recover configuration information relevant to the module. Thus, user can move and replace a module in installation, debug and fault test without need of closing down exchanger.

Description

Technical field [0001] The invention belongs to the field of computer network communication, and in particular relates to a hot plug detection and processing method for high-end switches. Background technique [0002] When the switch is working, the user may wish to perform hot plugging or hot swapping of modules without the switch being down due to reasons such as module failure. On the one hand, the detection and processing of hot plug does not affect other modules, and does not affect the normal forwarding of business flows; Configuration information for this module. That is, the removal of a module does not affect the operation of other modules in the system, and the system must reflect that the module no longer exists; when the user inserts the module again, the configuration information of the module can be restored. After insertion, the user does not need to intervene, and the module It can work normally (forwarding) as if it is not pulled out. [0003] At present,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/74H04L12/24H04L12/26
Inventor 石勇
Owner HUAWEI TECH CO LTD
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