L2TP-based (layer 2 tunneling protocol based) wireless access system and interaction method thereof

Abstract

The invention relates to an L2TP-based (layer 2 tunneling protocol based) wireless access system and an interaction method thereof; the interaction method comprises the steps of allowing a wireless access point to join a wireless access controller through internet; allowing the wireless access controller to issue a wireless local area network configuration and L2TP tunnel configuration to the wireless access point; allowing a wireless client which is online to transmit a data message to the wireless access point; allowing the wireless access point to package the data message and transmit to the wireless access controller; allowing the wireless access controller to unpackage the packaged data message, and transmit to a broadband access server of an extranet device by means of layer 2 forwarding; allowing the broadband access server of the extranet device to return a message of Ethernet frame to the wireless access controller; allowing the wireless access controller to find a path of the wireless client through a port mapping table, perform L2TP layer 2 tunnel packaging on the message and transmit to the wireless access point; allowing the wireless access point to unpackage the packaged message and forward to the wireless client. The standard L2TP is used herein to allow data interaction among the STA (station), AP (access point), AC (access controller) and BAS (broadband access server), with good compressing and encrypting properties and low cost.

Description

[0001] 【Technical field】 [0002] The present invention relates to the field of wireless communication, in particular to a wireless access system and an interaction method based on L2TP (Layer 2 Tunneling Protocol, the second layer tunneling protocol). Tunnel encapsulation and decapsulation of the data packets between them. [0003] 【Background technique】 [0004] Currently, the tunnel encapsulation of data packets between the AP (Wireless Access Point) and the AC (Wireless Access Controller) adopts the CAPWAP (Control And Provisioning of Wireless Access Points Protocol Specification) protocol. With the rapid development of WLAN, wireless networks are deployed in more and more places, and fat APs can no longer meet the demand. Therefore, the thin AP+AC architecture came into being. To manage multiple APs through the AC and perform control message management and data processing, a standard protocol is required to realize the interconnection and intercommunication between the AP...

AI Technical Summary

Problems solved by technology

However, if the miniaturized AC still uses the CAPWAP protocol in the data forwarding with the AP, it will greatly increase the development difficulty and development time, and also increase the equipment cost, and miss the market opportunity.

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