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Address analysis method and access point of wireless LAN

A wireless local area network and address resolution technology, applied in the WLAN field, can solve problems such as wireless local area network congestion, paralysis, and excessive broadcast messages, and achieve the effect of reducing messages

Active Publication Date: 2008-03-12
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen that each address resolution initiated by each STA will be broadcast to all other STAs in the entire WLAN. When there are a large number of STAs in the WLAN, it is easy to cause too many broadcast packets and occupy a large amount of wireless resources.
If there is a malicious ARP request, it will also cause a broadcast storm, causing congestion or even paralysis of the wireless LAN

Method used

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  • Address analysis method and access point of wireless LAN
  • Address analysis method and access point of wireless LAN
  • Address analysis method and access point of wireless LAN

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Embodiment Construction

[0060] In the prior art, when a STA associates with an AP, the AP will record the STA's MAC address; when the STA logs out, the AP will delete the STA's MAC address in the record. Each AP maintains a HASH (hash) table, which records the MAC addresses of all associated STAs of the current AP.

[0061] In the present invention, the AP can not only record the MAC address of its associated STA, but also record the IP address corresponding to the MAC address, that is, maintain the correspondence between the MAC addresses and IP addresses of all associated STAs on the AP. When receiving an address resolution request from another AP, the AP can know whether the IP address to be resolved is the address of the associated STA of this AP. If so, the AP can directly respond to the address resolution request without having to associate the STA with it. Forward the address resolution request; if not, the AP does not need to forward the address resolution request to its associated STA, becau...

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Abstract

The present invention discloses an address analytic method of a wireless local area network, which comprises an IP address and an MAC address of an association STA of a current AP; an AP request message of other AP used for an address analysis from other wireless local area network is received; if the destination STA of the AP request message is the association STA of the current AP, a response message is returned by the MAC address of the destination STA; the destination STA is a STA with the analysis IP address. The present invention can reduce a broadcast message during the process of the address analysis, and the wireless resource is saved.

Description

technical field [0001] The present invention relates to the field of WLAN (Wireless Local Area Network, wireless local area network), in particular to an address resolution method of a wireless local area network and an access point for implementing the method. Background technique [0002] WLAN is the product of the combination of computer and wireless communication technology in the 1990s. It uses wireless channels to access the network, provides potential means for communication mobility, personalization and multimedia applications, and becomes an effective means of broadband access. one. WLAN has the characteristics of flexible networking, low cost, and high speed, and is widely used in fields such as enterprises and education. [0003] A typical structure of WLAN is shown in Figure 1. The switch connects each AP (Access Point, access point) to the wired network, such as AP1, AP2 and AP3 in the figure, and each AP is connected to the BSS (Basic A STA (Station, wireless...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L12/56H04L29/06H04L12/28H04W84/12
Inventor 彭科
Owner NEW H3C TECH CO LTD
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