Method and device for realizing terminal roaming switch

A terminal and receiving terminal technology, applied in electrical components, wireless communications, transmission systems, etc., to solve problems such as terminal roaming service interruption

Inactive Publication Date: 2017-12-26
HANGZHOU DPTECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a method and device for realizing terminal roaming switching, so as to solve the problem of terminal roaming service interruption

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  • Method and device for realizing terminal roaming switch
  • Method and device for realizing terminal roaming switch
  • Method and device for realizing terminal roaming switch

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Embodiment Construction

[0017] In order to solve the problem of service interruption during terminal roaming, a three-layer roaming proxy method can be used. In this mode, the IP address of the terminal can remain unchanged after roaming, but the terminal sends and receives messages through the AC (WirelessAccess Point Controller, wireless controller) and the roaming AC, the ability to forward and process packets is limited by the AC. In addition, the message still carries the information of the original VLAN during the forwarding process. If the service is not interrupted, the configuration of the upper-layer device needs to be changed. When there are many upper-layer devices, it becomes extremely complicated to configure them one by one. In addition, when packets are forwarded across VLANs, the original VLAN information will be leaked, reducing network security.

[0018] In order to better solve the problem of service interruption during terminal roaming, an embodiment of the present invention prov...

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Abstract

The invention provides a method and device for realizing terminal roaming switch. The method for realizing terminal roaming switch comprises the following steps: after receiving a unicast DHCP Request message sent by a terminal, judging whether the terminal is a roaming terminal according to a configured IP address pool; sending a DHCP NAK message to the roaming terminal, thereby enabling the roaming terminal to resend a request to a DHCP server to acquire the IP address. By using the method provided by the invention, the non-perceptive roaming switch of the terminal can be realized, and the service in the roaming process is uninterrupted.

Description

technical field [0001] The invention relates to the field of wireless local area networks, in particular to a method and device for realizing terminal roaming switching. Background technique [0002] With the maturity of wireless local area network technology, wireless access function is provided in most occasions. In a wireless network, due to the limited signal coverage of a single AP (Wireless Access Point, wireless access point) device, wireless terminals such as mobile phones and tablet computers often roam from one AP coverage area to another when they are moving. The coverage of an AP. [0003] Roaming can be divided into Layer 2 roaming and Layer 3 roaming. When Layer 3 roaming occurs on a terminal, since the associated APs before and after roaming belong to different VLANs (Virtual Local Area Network, Virtual Local Area Network), the terminal service may be interrupted. Contents of the invention [0004] In view of this, the present invention provides a method a...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04W8/08
CPCH04W8/085H04L61/5014
Inventor 吴永旺
Owner HANGZHOU DPTECH TECH
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