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WLAN abnormal quick restoring method and device

A fast recovery and abnormal technology, applied in electrical components, transmission systems, data exchange through path configuration, etc., to achieve the effect of improving abnormal recovery capability, fast restart, and shortening access time

Active Publication Date: 2009-10-21
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The embodiment of the present invention provides a method and device for WLAN abnormal fast recovery, so as to solve the defect in the prior art that the connection with the AC cannot be re-established in time after the AP fails, and WLAN access service is restored for the user.

Method used

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  • WLAN abnormal quick restoring method and device
  • WLAN abnormal quick restoring method and device
  • WLAN abnormal quick restoring method and device

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Embodiment Construction

[0049] The core idea of ​​the present invention is to shorten the time for the access point to re-establish a connection with the access controller by extending the keep-alive mechanism, avoiding counterfeiting attacks by illegal APs, and at the same time ensuring that the access controller realizes fast access point status information. Restart.

[0050] The present invention provides a method for abnormal fast recovery of WLAN, such as image 3 shown, including the following steps:

[0051] Step s301, judging whether the access controller receives a connection establishment request sent by the access point within the connection keep-alive time. The judging criteria for the access controller to receive the connection establishment request sent by the access point within the connection keep-alive time include: when the access controller establishes a connection with the access point, start the keep-alive detection timer; When the connection establishment request is sent, the ...

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Abstract

The method comprises: deciding if access controller receives a connection-establishing request from an access point in valid connection time; if yes, the access controller makes anomaly detection for the access point; if the access point is abnormal, then clearing the resource of said access point; if the access point is normal, and then rejecting the connection-establishing request. The invention also provides a controller thereof.

Description

technical field [0001] The present invention relates to the technical field of WLAN (Wireless Local Area Network, wireless local area network), in particular to a method and device for WLAN abnormal fast recovery. Background technique [0002] In existing wireless communication technologies, WLAN provides a wireless connection service of a local area network. Wherein, the AP (Access Point, access point) is a wireless transceiver device of the wireless local area network, and the AP converts the data received from the wired network into a wireless signal for transmission, and forwards the received wireless signal to the wired network. Since a wireless network usually includes many APs, in order to provide management performance, the CAPWAP (Control and Provisioning of Wireless Access Points, control and regulation of wireless access points) protocol defines a centralized management WLAN network, which is composed of APs and ACs (Access Controllers, connected to Access contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04L29/06
Inventor 赵玉金蔡贤森
Owner NEW H3C TECH CO LTD
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