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A method and device for forwarding data packets across a software-defined network

A software-defined network and data packet technology, applied in the field of data packet forwarding, can solve the problems of cumbersome encapsulation/decapsulation process for multiple times, and achieve the effect of avoiding cumbersome processes

Active Publication Date: 2019-08-02
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, the present application provides a method and device for forwarding data packets across software-defined networks to solve the problem that multiple encapsulation / decapsulation processes are too cumbersome when forwarding across SDNs

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  • A method and device for forwarding data packets across a software-defined network
  • A method and device for forwarding data packets across a software-defined network
  • A method and device for forwarding data packets across a software-defined network

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0037] An embodiment of the present application provides a method for forwarding data packets across software-defined networks, which is used to realize the transmission of data packets across SDNs.

[0038] In order to implement the technical solution for transmitting data packets across SDNs provided in the embodiment of the present application, a connection needs to be established between SDN controllers in each SDN for communication. During specific implementation, a BGP connection may be established, but is not limited to the implementation manner of the BGP connection.

[0039] On the VTEP device, configure the NAT function under VXLAN for NAT processing, and configure the NAT mapping relationship between the private network addr...

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Abstract

The present invention provides a data packet forwarding method across software-defined networks, the method comprising: the SDN controller obtains and stores the network address translation NAT mapping relationship between the private network address and the public network address of the host computer in each SDN; When data packets need to be forwarded across SDN, the VTEP device with NAT function and gateway function will issue a flow table including NAT processing and VXLAN encapsulation, so that the VTEP device processes the data message according to the flow table and sends it directly to the peer VTEP device . Based on the same inventive concept, the present application also proposes a cross-software-defined network data message forwarding device, which can avoid the cumbersome process of VXLAN encapsulation / decapsulation multiple times during cross-SDN communication.

Description

technical field [0001] The invention relates to the field of communication technologies, in particular to a data message forwarding method and device across a software-defined network. Background technique [0002] In Software Defined Network (Software Defined Network, SDN), virtual extensible local area network (Virtual eXtensible Local Area Network, VXLAN) tunneling technology is used to encapsulate and forward private network data packets, and then communicate with the outside traditional network through the VXLAN IP gateway to communicate. [0003] When performing cross-SDN virtual machine (VM) communication, the following process is required, [0004] When the virtual extensible LAN tunnel endpoint (VXLAN Tunnel End Point, VTEP) device receives the data packet sent by the VM, it performs VXLAN encapsulation; and forwards it to the VXLAN IP GW through the VXLAN tunnel; [0005] When the VXLAN IP GW receives the VXLAN-encapsulated data packet sent by the VTEP device, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L29/12H04L45/74H04L45/741
CPCH04L12/4633H04L12/4641H04L2012/4629H04L61/2582H04L61/2514H04L41/34H04L41/342H04L41/40H04L41/122H04L45/745H04L61/5007H04L61/256H04L41/12H04L61/2592
Inventor 黄李伟王伟
Owner NEW H3C TECH CO LTD