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A VPN private network link detection method and device

A link detection and private network technology, applied in the field of communication, can solve problems such as the inability to accurately judge the interconnection between CE equipment and PE equipment

Active Publication Date: 2019-05-24
CHINA SOUTHERN POWER GRID COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a VPN private network link detection method and device to solve the problem that it is impossible to accurately determine the interconnection between CE equipment and PE equipment in a BGP / MPLS VPN network

Method used

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  • A VPN private network link detection method and device
  • A VPN private network link detection method and device
  • A VPN private network link detection method and device

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Embodiment Construction

[0040] Please refer to figure 1 The schematic diagram of the VPN networking structure is shown. Among them, PE equipment and CE equipment are usually included. The CE device is a network forwarding device connected to the edge device of the service provider through an interface. The CE device can be a Layer 2 access device or a host; the PE device is the edge device of the service provider network. CE equipment is directly connected. In a VPN network, all VPN processing occurs on PEs.

[0041] figure 1 , PE1 is connected to CE1, and PE2 is connected to CE2; PE1 and CE1 belong to VPN1, and PE2 and CE2 belong to VPN2. In the prior art, since different VPNs manage their own address spaces independently, the address spaces of different VPNs may overlap within a certain range. For example, when both VPN1 and VPN2 use addresses in the 10.110.10.0 / 24 network segment, CE1 and CE2 may have duplicate addresses, for example, both use 10.110.10.1. In this case, it is impossible to d...

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Abstract

The invention provides a virtual private network (VPN) link detection method and a VPN link detection device. The method is applied to provider edge (PE) equipment in a border gateway protocol (BGP) / multiprotocol label switching (MPLS) VPN. The method comprises the steps of using an IP address corresponding to a VPN configuration port on the PE equipment as an index, to search customer edge (CE) equipment corresponding to the IP address belonging to a same network segment with the above IP address; acquiring a first MAC address corresponding to the CE equipment; judging whether the MAC address that is the same as the first MAC address exists in an ARP entry of the PE equipment; and if yes, determining that the CE equipment and the PE equipment belong to a same VPN. Therefore, an interconnection condition of the CE equipment and the PE equipment in the VPN can be accurately confirmed.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a VPN private network link detection method and device. Background technique [0002] In BGP (Border Gateway Protocol, Border Gateway Protocol) / MPLS (Multiprotocol LabelSwitching, Multi-Protocol Label Switching) VPN (Virtual Private Network, virtual private network), when detecting the private network link of VPN, generally by obtaining PE (Provider Edge, the operator's edge) device on the bound VPN port corresponding to the IP address search and the IP (Internet Protocol, Internet Protocol) address in the same network segment CE (Customer Edge, user network edge) device, thereby establishing The interconnection link between the PE device and the CE device can also display the topology structure of the VPN private network on the network management software. [0003] However, since a VPN is a private network, different VPNs independently manage their own address ranges, al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/46
Inventor 谢尧洪丹轲张思拓吴柳黄文婷陈新南
Owner CHINA SOUTHERN POWER GRID COMPANY
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