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Implementation method of VPN (virtual private network) on basis of SDN (software defined network)

A technology of a virtual private network and an implementation method, which is applied in the field of implementation of a virtual private network, can solve problems such as limiting visibility, and achieve the effect of flexible division methods

Inactive Publication Date: 2016-02-24
NANJING ZHAOSHICHANG NETWORK TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, most service providers prohibit SNMP access to local devices, which limits visibility into what's going on under the hood of MPLS

Method used

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  • Implementation method of VPN (virtual private network) on basis of SDN (software defined network)
  • Implementation method of VPN (virtual private network) on basis of SDN (software defined network)

Examples

Experimental program
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Embodiment 1

[0028] The working process of establishing a private virtual network is as follows: figure 2 shown.

[0029] 1. For example, the 10.1.0.1 host sends a data packet to 10.2.0.1;

[0030] 2. The switch sw1 receives the data packet, fails to match in the local flow table, and sends the data packet to the SDN controller c1 through PacketIn signaling;

[0031] 3. The SDN controller uses the application program configured by the user to process the data packet. The destination address of the data packet is the internal network address of the foreign local area network, and the controller will send a control command to the switch to establish a corresponding flow entry.

[0032] In this step, if the SDN controller decapsulates the data packet and confirms through analysis that the data packet does not come from its own protocol agency LAN, but an unknown data packet on the network, or a malicious attack packet, the data packet will be discarded . The process ends.

[0033] 4. Wh...

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Abstract

The invention provides an implementation method of a VPN (virtual private network) on basis of an SDN (software defined network). The method comprises steps as follows: a user uses a northbound interface provided through an SDN controller to send a service request for establishing the VPN; the SDN controller receives the service request which comes from the user and is used for establishing the VPN, and the service request comprises a service type and service parameters; the SDN controller performs packaging processing on a data packet from a local area network host according to the service type and the service parameters, and the data packet is sent to a designated foreign network through an OpenFlow exchanger; after an SDN controller of the foreign network receives the data packet, corresponding de-encapsulation processing is performed, and the network data packet of a sender is recognized; finally, the VPN is established between networks of two places. According to the method, the VPN is partitioned in an SDN service deployment manner; the problems of single configuration manner, complicated configuration and management and difficulty in maintenance of conventional VPN configuration are solved.

Description

technical field [0001] The patent of the present invention relates to the field of network communication, specifically, it mainly relates to an implementation method of an SDN-based virtual private network. Background technique [0002] Software Defined Network (Software Defined Network, SDN) is a new network innovation architecture and a way to realize network virtualization. Its core technology, OpenFlow, separates the control plane of network equipment from the data plane and uses programmable technology to realize Flexible control of network traffic, making the network more intelligent as a pipeline. SDN, a key technology of the next-generation Internet, can promote future Internet technology innovation. At present, major universities and research institutions are paying close attention to the development of SDN technology, and on this basis, conduct research and experiments in related fields. [0003] The traditional virtual private network VPN service needs to be pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/24
CPCH04L12/4641H04L41/0803H04L41/0806
Inventor 黄韬魏亮汪勇王松生檀朝红
Owner NANJING ZHAOSHICHANG NETWORK TECH
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