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Roaming method based on IP and roaming device

A technology based on IP address and destination, applied in the field of roaming method and device based on Internet protocol, can solve the problems of small geographical range and inability to roam with multiple gateways

Active Publication Date: 2016-07-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the traditional technology, the mobile terminal can only roam under the same gateway, and cannot roam between multiple gateways, and the geographical range of roaming is small

Method used

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  • Roaming method based on IP and roaming device
  • Roaming method based on IP and roaming device
  • Roaming method based on IP and roaming device

Examples

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Embodiment Construction

[0052] 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.

[0053] figure 1 It is a flow chart of the IP-based roaming method provided by Embodiment 1 of the present invention. The solution of the embodiment of the present invention is applied to a scenario where a terminal roams between gateways. The terminal in this embodiment may be a mobile terminal or a virtual machine. When the terminal is a mobile terminal, roaming of the terminal between gateways means that the mobile terminal roams between gateways of the WLAN. When the terminal is a virtual machine, the roaming of the terminal between gateways means that the virtual machine migrates between hosts connected to different gateways. When the virtual machine migrates between ho...

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Abstract

The invention provides a roaming method based on IP and a roaming device. The roaming method is characterized in that a first gateway is used to receive a first message transmitted by a first terminal, and the target MAC address of the first message is the virtual MAC address corresponding to the virtual IP address of the first gateway, and then the first gateway adopts the first terminal as the roaming terminal, and under the control of the first gateway, the source IP address of the first message can be replaced from the real IP address of the first terminal to the mapping IP address after the roaming, and then the first message can be forwarded to a second gateway according to the target IP address of the first message; and under the control of the second gateway, the source IP address of the first message can be replaced from the mapping IP address after the roaming to the real IP address of the first terminal, and the first message can be transmitted to the terminal corresponding to the target IP address. According to the roaming method, the first gateway and the second gateway are respectively used for the replacement of the source IP address of the first message, and the IP address of the first terminal after the roaming can be guaranteed to be unchanged.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a roaming method and device based on Internet Protocol (Internet Protocol, IP for short). Background technique [0002] In a wireless local area network (wireless local area network, WLAN for short), roaming refers to that the IP address of the wireless terminal remains unchanged during the process of moving the wireless terminal between access points (English: access point, AP for short). [0003] In the case where the gateway is connected to multiple APs, the multiple APs are connected to the gateway through different VLANs. The traditional technology adopts a virtual local area network (English: virtual local area network, VLAN for short) tag replacement technology to realize roaming of wireless terminals between APs of the same gateway. Specifically, assume that the mobile terminal accesses the network from the first AP, and the first AP connects to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/08H04L29/12
Inventor 吴平
Owner HUAWEI TECH CO LTD