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Method to search access controller in wireless LAN and proxy server

An access controller and wireless local area network technology, applied in electrical components, transmission systems, data exchange through path configuration, etc., can solve problems such as inability to AC, long time to discover AC, and limitation of WLAN networking applications, and achieve optimization. Network structure, the effect of realizing the load

Active Publication Date: 2009-05-06
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] From the above process, we can see that the AP first searches for the AC on the Layer 2 network. When the AC cannot be found on the Layer 2 network, it continues to search for the AC through the Layer 3 network. Such a complicated discovery process leads to the discovery of the AC. The time is too long; in addition, in the case of the stateless automatic configuration of IPV6, the DHCP / DNS server is actually not needed in the system, that is to say, if the DHCP / DNS server is not supported, the AP cannot It can be seen that the AC is found, which greatly limits the networking application of WLAN

Method used

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  • Method to search access controller in wireless LAN and proxy server
  • Method to search access controller in wireless LAN and proxy server
  • Method to search access controller in wireless LAN and proxy server

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Embodiment Construction

[0039] refer to figure 2 , the method described in the embodiment of the present invention proposes a CAPWAP proxy technology. By configuring a CAPWAP proxy on an independent network device, that is, a CAPWAP proxy server (for example, a gateway) to maintain the IP address information of all ACs, the AP only searches for the AC through broadcasting, and the CAPWAP proxy server maintains the AC according to the IP address of the AC. , responsible for sending the AC discovery message to an AC, so that the access point AP can quickly and reliably establish a CAPWAP tunnel with the AC through the three-layer network without the need for a DHCP / DNS server. The specific timing process is as follows:

[0040] Step 201: the access point AP starts and completes initialization, and obtains its own IP address; for example, it can obtain its own IP address through static configuration, DHCP server allocation or automatic configuration (such as IPv6 stateless address configuration);

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Abstract

This invention discloses one method and agent servo to search interface controller in wireless local network, which comprises the following steps: firstly, the local network comprises one interface point to receive CAPWAP message from interface point; then receiving said CAPWAP message and selecting one interface controller IP address according to the interface controller IP address and sending it to the controller.

Description

technical field [0001] The present invention relates to WLAN (Wireless Local Area Network, wireless local area network) CAPWAP (Control and Provisioning of Wireless Access Points, wireless access point control and provision) tunnel proxy technology, specifically, relates to a search access control in a wireless local area network Device method and CAPWAP proxy server. Background technique [0002] WLAN provides a wireless connection service of a local area network. Because it can provide high-speed wireless data access, WLAN is one of the more popular technologies in the IT industry at present, and it is also a popular wireless access method. A WLAN usually adopts a centralized AC-AP (Access Controller—Access Point, Access Controller—Access Point) architecture. Among them, the AC provides centralized management of the WLAN network, and the AP establishes a link with the AC and joins the WLAN network to provide wireless access services. [0003] The existing CAPWAP protocol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04L29/06H04L29/12
Inventor 张志飞张海涛
Owner XINHUASAN INFORMATION TECH CO LTD
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