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Method for updating roaming user address and access controller

A technology of access controller and roaming user, applied in network data management, transmission system, wireless communication, etc., can solve problems such as service failure and communication interruption

Active Publication Date: 2007-04-18
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen that when the HA of a roaming user terminal fails or the roaming tunnel between HA and FA fails, before the user terminal actively sends a message, that is, if the user terminal only receives data and does not send data, Since the network device does not know that the HA of the roaming user terminal fails or cannot handle the failure, even if the roaming user associates (Association / Re-Association, association-re-association) with the FA as a normal user; the data sent to the user will still be sent to HA, leading to business failure and communication interruption

Method used

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  • Method for updating roaming user address and access controller
  • Method for updating roaming user address and access controller
  • Method for updating roaming user address and access controller

Examples

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Embodiment Construction

[0032] Referring to Figure 2, when the user terminal roams from its home network to the roaming network, the method described in the embodiment of the present invention includes the following steps:

[0033] Step 101: The roaming access controller AC where the user terminal is currently located detects whether the state of the roaming tunnel where the roaming user terminal roams from its home network to the roaming network deteriorates, and if it is found that the state of the roaming tunnel deteriorates, execute Step 102; otherwise, no action and end.

[0034] Here, the state of the roaming tunnel deteriorates, for example, the home access controller of the user terminal is down, or the roaming tunnel is in a fault state of communication interruption, or in a fault state such as congestion. The roaming access controller AC of the user terminal detects whether the roaming tunnel is deteriorated, which can be implemented in various ways. For example, the roaming access control...

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PUM

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Abstract

The invention discloses a roaming user address updating method and access controller, comprising the steps of: when the current foreign access controller of a roaming user terminal detects that the state of the roaming tunnel for the roaming user terminal to roam from home netowrk to roaming foreign netowrk is worsened, the foreign access controller uses the roaming user terminal as local user terminal, connected in parallel; and broadcasts and sends out an address updating message whose source address is the user terminal's MAC address. And the invention can implement normal communication when the roaming user terminal's HA (home agent) fails or the tunnel between HA and FA (foreign agent) fails and before the user terminal does not actively send the message.

Description

technical field [0001] The invention relates to wireless local area network technology, in particular to a roaming user address updating method and an access controller. Background technique [0002] WLAN (Wireless Local Area Network, wireless local area network) 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] Wireless roaming is the key to solving user mobility. In the HA (Home Agent, Home Agent)-FA (Foreign Agent, Roaming Agent) roaming architecture, all data to the roaming u...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04L12/56H04L12/26H04L12/28H04W4/06H04W8/02H04W8/08H04W8/26H04W24/04
Inventor 张志飞张海涛费优松赵玉金史杨
Owner NEW H3C TECH CO LTD
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