Method, device and system for engaging second layer network and third layer network

A technology of three-layer network and two-layer network, applied in the field of network interconnection, can solve the problems of poor networking flexibility and reliability, high networking cost, etc., to simplify the process of inter-network communication, reduce networking costs, and simplify datagrams The effect of text in the process of inter-network communication

Inactive Publication Date: 2008-01-23
HUAWEI TECH CO LTD
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Problems solved by technology

[0008] The above-mentioned method for realizing the interconnection between the Layer 2 network and the Layer 3 network is to connect the MPLS L2VPN network and the MPLSL3VPN network through two operator edge devices PE2 and PE3, so as to achieve the purpose of con

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  • Method, device and system for engaging second layer network and third layer network
  • Method, device and system for engaging second layer network and third layer network
  • Method, device and system for engaging second layer network and third layer network

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Embodiment Construction

[0031] In the prior art, the termination device of the Layer 2 network is connected with the access device of the Layer 3 network through a physical line to achieve the purpose of connecting the Layer 2 network and the Layer 3 network. To achieve this purpose, the embodiments of the present invention adopt The technical solution is:

[0032] A communication method connecting a two-layer network and a three-layer network, comprising the following steps:

[0033] A layer-2 virtual interface or a layer-3 virtual interface receives a data packet;

[0034] Find the corresponding layer-3 virtual interface or layer-2 virtual interface in the binding mapping table of layer-2 and layer-3 virtual interfaces according to the layer-2 virtual interface identifier or layer-3 virtual interface identifier in the data message;

[0035] A layer-3 virtual interface or a layer-2 virtual interface forwards data packets sent by a layer-2 virtual interface or a layer-3 virtual interface.

[0036] Co...

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Abstract

The present invention discloses a method, a device and a system for connecting a two-layer network and a three-layer network, which solves the problems that when the two-layer network and the three-layer network are connected, the networking cost is high, and the network structure is complex. A two-layer virtual interface or a three-layer virtual interface receives a data message, and finds out a corresponding three-layer virtual interface or two-layer virtual interface in a binding mapping table of the two-layer or three-layer virtual interface, according to a two-layer virtual interface identifier or a three-layer virtual interface identifier, the three-layer virtual interface or the two-layer virtual interface transmits the data message sent by the two-layer virtual interface or the three-layer virtual interface. The present invention realizes the communication of the data message between the two-layer network and the three-layer network by using only one terminal access device on the two-layer network and the three-layer network, compared with the prior art, one network device is saved, the networking cost is reduced, and the flexibility and the reliability of the networking are improved. The present invention can be applied in the connection between an MPLS L2VPN network and an MPLS L3VPN network.

Description

technical field [0001] The present invention relates to a method, device and system for network interconnection, in particular to a method for realizing the interconnection between an MPLS L2VPN (Multi-Protocol Label Switching Layer 2 Virtual Private Network) network and an MPLS L3VPN (Multi-Protocol Label Switching Layer 3 Virtual Private Network), devices and systems. Background technique [0002] With the development of network technology, in order to meet the needs of different users and different business volumes, various networking technologies emerge in an endless stream. The communication process between MPLS L2VPN network and MPLS L3VPN network commonly used today is shown in Fig. 1 . The communication process between the MPLS L2VPN network and the MPLS L3VPN network of the data packet sent by CE1 (Customer Edge, user edge device) is described below as an example: [0003] Referring to accompanying drawing 1, data message needs to pass through MPLS L2VPN network a...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/56H04L29/10
CPCH04L45/00
Inventor 郝卫国牛琨古月徐徐岗
Owner HUAWEI TECH CO LTD
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