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Method and device for obtaining vpn traffic based on netflow and bgp

A technology of traffic acquisition and traffic data, applied in the field of communication, can solve the problems of low correlation, low accuracy, lack of key data for identifying VPN traffic, etc., and achieve the effect of improving correlation and accuracy

Active Publication Date: 2022-05-17
CHINA UNITECHS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, for the VPN (Virtual Private Network, virtual private network) traffic in the network, only the overall traffic of the port of the device (usually a router) can be simply counted. Among the data traffic output by the device through NetFlow, NetFlow lacks some keys to identify VPN traffic Data, that is, when NetFlow outputs VPN data, the correlation between NetFlow and VPN is low, resulting in low accuracy of subsequent VPN traffic statistics

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  • Method and device for obtaining vpn traffic based on netflow and bgp
  • Method and device for obtaining vpn traffic based on netflow and bgp
  • Method and device for obtaining vpn traffic based on netflow and bgp

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Embodiment Construction

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0043] attached figure 1 A method for obtaining VPN traffic based on NetFlow and BGP provided by the embodiment of the present invention, as shown in the attached figure 1 As shown, the method includes:

[0044] Step 101, obtain traffic data information according to the NetFlow protocol, and the traffic data information includes: target service provider edge equipment PE (Provider Edge, service provider edge equipment) address information and multi-protocol label switching MPLS (Multi-Protocol Label Switching) information.

[0045] In this embodiment, the NetFlow p...

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Abstract

The invention discloses a method and device for acquiring VPN traffic based on NetFlow and BGP. The method includes: acquiring traffic data information according to the NetFlow protocol; acquiring VPN routing information according to the BGP protocol, and acquiring target next-hop information according to the VPN routing information; The association information between label information and route identification information, and the association information between route identification information, address prefix information, and source end next hop information; according to the target PE address information and MPLS label information, combined with target next hop information, label information and The associated information of the routing identification information, obtaining the routing identification value; obtaining the source PE address information; obtaining the VPN traffic data according to the target PE address information and the source PE address information. The present invention can improve the correlation degree between NetFlow and VPN, and further improve the accuracy of subsequent acquired VPN traffic statistics results.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for acquiring VPN traffic based on NetFlow and BGP. Background technique [0002] NetFlow is a data exchange method. Its working principle is: the network device collects the forwarded data according to a certain sampling strategy and generates a NetFlow cache, and then the same data is transmitted in the same data flow based on the cached information. Match relevant policies such as access control, and the NetFlow cache also contains statistical information of subsequent data. A traditional NetFlow data flow is defined as a unidirectional data packet flow transmitted between the source IP address and the destination IP address, and all Packets have a common transport layer, source / destination port number and protocol number. [0003] At present, for the VPN (Virtual Private Network, virtual private network) traffic in the network, only the overall traf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/50H04L45/00H04L45/745H04L12/46
CPCH04L45/50H04L45/20H04L45/745H04L12/4641
Inventor 王书存
Owner CHINA UNITECHS