A method for preventing IP address conflicts based on software-defined networking

A software-defined network and IP address technology, applied in the field of IP address conflict prevention, can solve problems such as broadcast storms, and achieve the effect of avoiding broadcast storms and high efficiency

Active Publication Date: 2019-10-22
公采网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, since gratuitous ARP packets use the broadcast address as the destination address, it is very easy to cause a broadcast storm

Method used

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  • A method for preventing IP address conflicts based on software-defined networking
  • A method for preventing IP address conflicts based on software-defined networking
  • A method for preventing IP address conflicts based on software-defined networking

Examples

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Embodiment Construction

[0031] A software-defined network (Software Defined Network, SDN)-based method for preventing IP address conflicts according to the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Such as figure 1 As shown, a software-defined network-based anti-IP address conflict method includes:

[0033] The software-defined network switch establishes a channel with the controller;

[0034] The software-defined network switch reports the physical (MAC) address information, the port information of each port, and the IP address information of the port by exchanging private Experimenter packets;

[0035] The controller receives and calculates the information reported by all software-defined network switches to determine whether there is an IP address conflict;

[0036] When the controller finds that there is an IP address conflict, it sends an Experimenter message to the software-defined network switch where th...

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PUM

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Abstract

The present invention provides a software-defined network-based method for preventing IP address conflicts, comprising: the software-defined network switch reports its own physical address information, each port information, and the IP address information of each port to the controller; The controller receives all the information reported by the software-defined network switch and performs calculations to determine whether there is an IP address conflict; if there is an IP address conflict, the controller sends a message to the software-defined network switch to notify The software-defined network switch modifies the IP address. The method proposed by the present invention is based on the SDN architecture, and the controller uniformly calculates whether there is an address conflict, and if there is an address conflict, notifies the low-priority switch to modify the IP address without exchanging free ARP messages. The whole strategy is highly efficient and can avoid broadcast storms.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a software-defined network-based method for preventing IP address conflicts. Background technique [0002] A gratuitous ARP packet is a special ARP packet. Both the sender IP address and the destination IP address carried in the packet are local IP addresses, the source physical address of the packet is the local physical address, and the destination physical address of the packet is The address is the broadcast address. The device implements the following functions by sending gratuitous ARP packets: [0003] 1) Determine whether the IP address of other devices conflicts with the IP address of this machine. When other devices receive the gratuitous ARP message, if they find that the IP address in the message is the same as their own IP address, they will return an ARP response to the device that sent the gratuitous ARP message, telling the device that the IP address conf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12
CPCH04L61/5046H04L61/5069
Inventor 翟跃
Owner 公采网络科技有限公司
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