Method and device for detecting node address conflict

A node address and address conflict technology, applied in the field of communication, can solve problems such as low accuracy and heavy network transmission pressure

Active Publication Date: 2013-07-03
KYLAND TECH CO LTD
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Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for detecting node address conflicts, which are used to

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  • Method and device for detecting node address conflict
  • Method and device for detecting node address conflict
  • Method and device for detecting node address conflict

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Embodiment Construction

[0018] Embodiments of the present invention provide a method and device for detecting node address conflicts. In the method, the second network node periodically broadcasts each ARP message with its own MAC address and IP address as the source address, and the second network node does not Simultaneously broadcast all ARP messages, the first network node receives the ARP message broadcast by the second network node, and judges whether the source address of the ARP message conflicts with the address of the first network node itself, and if conflicts, sends a message to the network management server Report the address conflict information carrying the source address of the ARP packet. Through the above method, in addition to detecting whether its own IP address conflicts with the IP address of the second network node, the first network node can also detect whether its own MAC address conflicts with the MAC address of the second network node. The accuracy of the address conflict a...

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Abstract

The invention discloses a method and a device for detecting node address conflict. According to the method, a second network node periodically broadcasts all ARP (address resolution protocol) messages taking each MAC (media access control) address and each IP (internet protocol) address of the second network node taken as a source address, and the second network node does not broadcast all ARP messages simultaneously; and a first network node receives the ARP messages and judges whether the source address of the ARP message is in conflict with the address of the first network node, and if so, the message about address conflict of the source address carrying the ARP message is reported to a webmaster server. Due to adoption of the method, the first network node not only can detect whether self IP address is in conflict with the IP address of the second network node, but also can detect whether self MAC address is in conflict with the MAC address of the second network node, so that the accuracy on detecting the node address conflict is improved; and the second network node does not broadcasts all the ARP messages simultaneously, so that the network transmission pressure can be reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for detecting node address conflicts. Background technique [0002] With the development of network technology, industrial Ethernet has been widely used in various large and medium-sized network constructions. During the transmission of network data packets, packet transmission exceptions often occur due to conflicts between Internet Protocol (IP) addresses or Medium Access Control (MAC) addresses of network nodes. [0003] However, in the prior art, when detecting whether the addresses of each network node conflict, it is mainly aimed at the IP addresses of each network node, but does not detect whether the MAC addresses of each network node conflict. Therefore, in the prior art The accuracy of detecting node address conflicts is low, which affects the normal transmission of messages. [0004] In addition, in the prior art, when detecting whether the...

Claims

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Application Information

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IPC IPC(8): H04L29/12
Inventor 李志强
Owner KYLAND TECH CO LTD
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