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Message transmitting method, wireless access point, wireless controller and system

A message forwarding and message technology, applied in the field of communication, can solve the problems of increasing the complexity of AP software, achieve the effect of reducing message copying overhead and improving network bandwidth utilization

Active Publication Date: 2015-07-01
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] This method can process multicast and broadcast packets, and because the VLAN and WLAN mapping tables are set on the AP in advance, it can effectively solve the timing problem; but this requires the AP to query the VLAN and WLAN mapping tables during packet forwarding. Forwarding is not consistent with the idea of ​​thinner AP devices in the thin AP network architecture, and it needs to increase the complexity of AP software

Method used

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  • Message transmitting method, wireless access point, wireless controller and system
  • Message transmitting method, wireless access point, wireless controller and system
  • Message transmitting method, wireless access point, wireless controller and system

Examples

Experimental program
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Embodiment 1

[0090] This embodiment provides an AC-side processing flow of a message forwarding method as follows: image 3 As shown, the following processing steps are included:

[0091] According to the definition of the CAPWAP protocol, when a multicast or broadcast data packet is encapsulated by CAPWAP, the WLAN ID of the WLAN site accessed is found according to the VLAN ID and the CAPWAP tunnel interface, and the WLAN ID of the WLAN site is written as WLAN ID bitmap information , padding is performed when the AC performs CAPWAP encapsulation on the packet. as attached figure 2 As shown, the RID field and W flag and Wireless Specific Information information will be filled. The Rid field indicates the Radio id, and the w sign indicates that the wireless specific information is carried in the message.

[0092] Among them, Wireless Specific Information is filled with wlan id bitmap, as attached Figure 4 As shown, the most significant bit of the WLAN ID bitmap represents WLAN 16, ie ...

Embodiment 2

[0135] This embodiment provides a message forwarding system, and its specific implementation structure is as follows Figure 9 As shown, it may specifically include an AP and an AC; wherein,

[0136] An AC includes: a first encapsulation module 11 , a first replication module 12 and a first forwarding module 13 .

[0137] The first encapsulation module 11: it is used for filling the Radio ID bitmap information when the AC performs CAPWAP encapsulation on the message when the number of radios in the active state reported by the AP is greater than the number of wlan stations accessed by the AP;

[0138] The first copying module 12: it is used for copying described message according to wlan site quantity, obtains first batch of copying message;

[0139] The first forwarding module 13: it is used for forwarding the first batch of copied messages to the AP according to the AC-side mapping table.

[0140] The AC-side mapping table includes: the mapping relationship between the Rad...

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PUM

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Abstract

The embodiment of the invention provides a message transmitting method, a wireless access point, a wireless controller and a system. When the first duplicated message received by an AP (access point) carries with information of Radio ID bitmap, generating a second duplicated message according to the rule of Radio ID bitmap (R bit map), wherein the first duplicated message is generated according to number of alan station point; analyzing the information of Radio ID bitmap carried by the first duplicated message, and obtaining the Radio ID; according to the AP end mapping table, searching a basic service unit logo BSS ID corresponding to the Radio ID; according to the basic service unit logo BSS ID, structuring a wireless frame, and transferring the second duplicated message. The message transmitting method improves the broadcasting and multicast message control in a smart distribution system, reduces the message duplicating cost and improves the utilization rate of the network bandwidth.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a wireless access point, a wireless controller and a system for a message forwarding method. Background technique [0002] The deployment of WLAN (Wireless Local Area Networks, wireless local area network) usually adopts centralized management, using AC (Acess controller, wireless controller) and AP (Acesss point, wireless access point) to form a thin AP network architecture, AP uses CAPWAP (Control And Provisioning of Wireless Access Points) protocol to access the AC, and the AC provides centralized management of the WLAN. The AP broadcasts the WLAN signal through the radio frequency port, and the STA (station, wireless terminal workstation, such as PDA, wireless notebook) accesses the WLAN by sending 802.11 frames to the Radio (radio frequency port) of the AP, and the AP sends it to the AC through the CAPWAP tunnel for centralized deal with. as attached figure 1 As sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W84/12
Inventor 陈文钛
Owner RUIJIE NETWORKS CO LTD
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