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VPN construction recovery method and apparatus

A structure and group technology, applied in the field of VPN structure restoration, can solve the problems of inapplicability, network structure restoration failure, irregular networking mode, etc., to achieve good applicability and eliminate the effect of network structure restoration failure

Active Publication Date: 2008-11-26
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a VPN structure restoration method and device to solve the problem that the prior art VPN structure restoration method fails to restore the network structure due to rt conflicts and cannot be applied to irregular networking methods

Method used

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  • VPN construction recovery method and apparatus
  • VPN construction recovery method and apparatus

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Embodiment Construction

[0060] The present invention will be further described below with specific embodiments in conjunction with the accompanying drawings.

[0061] As shown in Figure 6, Figure 6 is a flowchart of a VPN structure restoration method of the present invention, including the following steps:

[0062] Step S601, creating a communication community according to the routing information of the network device. The routing information is the vrf information bound to the network device interface shown in FIG. 4 , and the basic SC is calculated according to the vrf information.

[0063] Step S602, merging multiple communication communities to construct a composite communication community. Merge the SCs that meet the merging conditions in the calculated basic SCs to construct a composite SC. Find the SC of the hub_spoke structure that has the same routing information as the SC of the full_mesh structure. If all the sites under the SC of the full_mesh structure are included in the SC of the hub...

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PUM

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Abstract

The invention discloses a VPN (Virtual Private Network) structure reduction method, comprising: building communication groups according to the route information of network devices; combining a plurality of communication groups to build a composite communication group; attaining the station information according to the information of the communication group to reduce the VPN structure. The invention further provides a VPN structure reduction device, which can effectively reduce different VPN networks and eliminate the reduction failure of the VPN structure caused by rt (route target) conflict, having better applicability to complex network.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and device for restoring a VPN structure. Background technique [0002] VPN (Virtual Private Network, Virtual Private Network) technology is a technology for transmitting private network data through a public network, through which different private networks can be connected. As a message transmission technology, MPLS (Multiprotocol Label Switching) plays an important role in realizing the construction of a VPN network. MPLS transmits packets by establishing LSP (Label Switched Path) tunnels on the public network. MPLS-based VPNs connect different branches of private networks through LSPs to form a unified network. [0003] As shown in FIG. 1 , it is a schematic structural diagram of a VPN network in the prior art. The VPN network includes 3 sites CE1, CE2, and CE3 and 3 access routers PE1, PE2, and PE3. The three stations CE1, CE2, and CE3 form a commun...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/56H04L29/06H04L45/60
Inventor 程剑石翔
Owner NEW H3C TECH CO LTD