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Method, system and access device for realizing the intercommunication of two layers of local specific service

A technology for specific services and access equipment, applied in the field of communication, can solve problems such as potential safety hazards, achieve the effect of reducing load and ensuring safety

Inactive Publication Date: 2009-10-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In this solution, users realize Layer 2 intercommunication through P2P VLAN, which reduces the load on the NAS. However, during the intercommunication process, the source device knows the MAC address of the destination device, which has certain security risks.

Method used

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  • Method, system and access device for realizing the intercommunication of two layers of local specific service
  • Method, system and access device for realizing the intercommunication of two layers of local specific service
  • Method, system and access device for realizing the intercommunication of two layers of local specific service

Examples

Experimental program
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Embodiment 1

[0042] see Figure 4 , is a schematic diagram of the access network topology provided by Embodiment 1 of the present invention, including: two user equipments (user 1 and user 2), access node AN1 and access node AN2, a convergence layer, and a network access server NAS.

[0043]Wherein, user 1 and user 2 are connected to the same NAS through access nodes AN1 and AN2 connected to the aggregation layer. The specific service message transmitted between user 1 and user 2 is a local specific service message, for example: IPTV (Internet Protocol TeleVision, Internet TV) service message, FTP (File Transfer Protocol, file transfer protocol) service message, SMTP ( Simple Mail Transfer Protocol, Simple Mail Transfer Protocol) business messages, etc.

[0044] The access nodes AN1 and AN2 are in the same VLAN as the nodes in the aggregation layer. According to the physical topology of the network, the NAS selects the access node AN1 corresponding to user 1 and the access node AN2 corres...

Embodiment 2

[0063] see Figure 6 , Figure 6 It is a system structure diagram for implementing Layer 2 intercommunication of local specific services provided by Embodiment 2 of the present invention. This embodiment provides a system for realizing Layer 2 interworking of local specific services. The system includes: a network access server and a source access device and the destination access device; the local specific service in this embodiment may be an IPTV, FTP or SMTP service message.

[0064] Wherein, the network access server is used to notify the source access device to record the characteristic information of the specific service message;

[0065] The source access device and the destination access device are in the same VLAN, and there is a Layer 2 channel between the source access device and the destination access device;

[0066] The source access device is used to receive the message, extract the feature information of the message, judge whether the extracted feature inform...

Embodiment 3

[0070] see Figure 7 , Figure 7 It is a structural diagram of the access device provided in Embodiment 3 of the present invention. This embodiment provides an access device, which includes:

[0071] A receiving module, configured to receive messages;

[0072] A judging module, configured to judge whether the message received in the receiving module is a specific service message;

[0073] The sending module is used to forward the message through the layer-2 channel in the virtual local area network when the judging result of the judging module is that the message is a specific service message, otherwise, forward the message through the network access server.

[0074] Wherein, the judging module judges whether the message received in the receiving module is a specific service message by judging whether the feature information of the message is the same as the feature information of the specific service message, if the feature information of the message is the same as the feat...

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Abstract

The invention provides a method, a system and an access device for realizing two-layer intercommunication of local specific services, belonging to the communication field. The method includes: selecting a source access node corresponding to a source device of a local specific service and a destination access node corresponding to a destination device, increasing the ability to distinguish specific service packets at the source access node, and when the source access node receives After the message, determine whether the message is a specific service message, if so, send the message to the destination access node through the virtual local area network; after the destination access node receives the message, send the message to the The text is sent to the destination device. The system includes: a network access server, a source access device and a destination access device. The access device includes: a receiving module, a judging module and a sending module. The scheme of the present invention is used to reduce the burden of NAS and ensure the security of the access network at the same time.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, a system and an access device for realizing the two-layer intercommunication of local specific services. Background technique [0002] The existing access network architecture includes three parts: NAS (Network Access Server, network access server), convergence layer and access layer. Among them, NAS is the boundary between the access network and the IP network. All traffic between users needs to be forwarded through the NAS. The convergence layer is composed of multiple convergence points, which are used to realize the two-layer convergence of the user's physical or logical access channel to the NAS. , the access layer is composed of AN (Access Node, access node). AN is responsible for accessing the user's data link layer and physical layer, and performs simple layer-2 access control. Currently, AN is mainly DSLAM (Digital Subscriber Line Access Mutliplexer, digital subscrib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/46H04L29/06
CPCH04L12/2856H04L45/00
Inventor 李峰
Owner HUAWEI TECH CO LTD