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Wireless local area network roaming method, access point and wireless controller

A wireless controller, wireless local area network technology, applied in the field of communication, can solve problems such as traffic interruption

Inactive Publication Date: 2016-07-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When the terminal roams from the first AP to the second AP, the port corresponding to the terminal user address stored on the gateway is still the port associated with the first AP, and the network traffic from the gateway to the terminal is still forwarded by the gateway to the port before roaming. cause flow interruption

Method used

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  • Wireless local area network roaming method, access point and wireless controller
  • Wireless local area network roaming method, access point and wireless controller
  • Wireless local area network roaming method, access point and wireless controller

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Embodiment Construction

[0073] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0074] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings in the embodiments of the present invention.

[0075] figure 1 A schematic diagram of the network architecture based on the wireless local area network roaming method provided by the embodiment of the present invention, wherein the terminal 101 has a WLAN function and can establish an association with an AP through the WLAN; the first AP102 and the second AP103 are two different access points. The coverage areas of the first AP 102 and the second AP 103 may be completely the same, may partially overlap, or may be completely different. The gateway 104 is the gate...

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Abstract

The embodiment of the invention relates to a wireless local area network roaming method, an access point and a wireless controller. The method comprises the following steps that: when a first terminal roams to a second AP from a first AP, the second AP sends a request message to the wireless controller; the request message includes the MAC address of the first terminal; association with the first terminal is established; the MAC address of the first terminal and the IP address of the first terminal sent by the wireless controller are received; an ARP message or a NDP message is sent to a gateway according to an internet protocol version, which the IP address of the first terminal belongs to; the ARP message or the NDP message includes the IP address of the first terminal and the MAC address of the first terminal; and the second AP receives a first data message sent by the gateway and sends the first data message to the first terminal. Visibly, in the embodiment of the invention, the ARP message or the NDP message is sent to the gateway through the second AP, so that the gateway is prompted to updatea port corresponding to the MAC address of the first terminal to be under a port connected to a new AP; and thus, the normal traffic forwarded from the network side to the new AP after the terminal roams can be ensured.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a wireless local area network roaming method, an access point and a wireless controller. Background technique [0002] Terminals such as smart phones and tablet computers all provide wireless local area network (English: wireless local area network, abbreviation: WLAN) function, and the terminal can access the Internet by associating with an access point (English: accesspoint, abbreviation: AP) through WLAN. Since the coverage of APs is limited, there are generally multiple APs in a larger place to increase the coverage of the WLAN. When a terminal switches from one AP to another AP, it is called WLAN roaming. [0003] When the terminal roams from the first AP to the second AP, the port corresponding to the terminal user address stored on the gateway is still the port associated with the first AP, and the network traffic from the gateway to the terminal is still forwarded ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/08H04L29/12
Inventor 华建军欧历云
Owner HUAWEI TECH CO LTD
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