Control method and control device for switching AP (Access Point) between hot standby ACs (Access Controllers)

A control method and technology of a control device, which are applied in the field of AC (Access Controller), can solve the problems of prone to false switching, interruption of service data flow, failure to receive heartbeat detection packets of the main AC, etc., so as to improve security and avoid service data. Effects of stream interruption
CN102752172AActive Publication Date: 2012-10-24XINHUASAN INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINHUASAN INFORMATION TECH CO LTD
Publication Date
2012-10-24

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Abstract

The invention discloses a control method and a control device for switching an AP (Access Point) between hot standby ACs (Access Controllers). According to the scheme provided by the invention, after a tunnel switching notice sent by a slave AC is received by the AP, the survival states of a master AC and the slave AC are judged by detecting the master AC and the slave AC; the switching is performed according to the tunnel switching notice of the slave AC only when the survival state of the master AC is abnormal, so that the error switching when the master AC is not in fault is avoided and the interruption of service data caused by the error switching is also avoided; if the time-sharing detection for each AP is realized by the master AC by detecting the configuration of all the APs, the influence of a large quantity of gusty detection messages on the master AC and the slave AC is avoided; and besides, the hot standby combination of each two ACs can be clearly appointed by an IP (Internet Protocol) address and an IP message serves as an interactive hopping detection message between each two hot standby ACs.
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Description

technical field

[0001] This application relates to AC (Access Controller, access controller) hot standby technology in WLAN (Wireless LAN, wireless local area network), especially relates to the control method and method for AP (Access Point, access point) switching between hot standby ACs control device. Background technique

[0002] In existing WLAN applications, it is generally required that the WLAN can provide the AC hot backup capability.

[0003] figure 1 It is a schematic diagram of a WLAN with AC hot backup capability in the prior art. Such as figure 1 As shown, there are usually multiple ACs in a WLAN, and any two ACs can be hot standby for each other ( figure 1 Only two ACs are used as an example). In addition, in each pair of ACs that are hot standby for each other, one acts as the master (Master) AC, and the other acts as the backup (Slave) AC. The master AC is responsible for forwarding the service data flow of each AP, and the backup AC passes the Exchan...

Claims

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