公开(公告)号：US20130286854A1

公开(公告)日：2013-10-31

申请号：US13927891

申请日：2013-06-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhen CAO ,  Shi TANG ,  Jun PAN ,  Zhijian SUN ,  Hua SHEN

IPC: H04L12/24

CPC classification number: H04L41/0645 ,  H04L61/103 ,  H04L61/2046 ,  H04L61/2069

Abstract: The present invention discloses a method and network device for detecting IP address conflict. The method for detecting IP address conflict comprises: collecting all the ARP entries from a broadcasting network segment; and carrying out a data check on the ARP entries collected, and determining that there is an IP address conflicted when it is detected that there are ARP entries with the same IP address but different media access control (MAC) addresses. The network device includes a collecting module and a detecting module. The present invention may achieve the function of IP address conflict detection in a broadcasting network segment by employing one or several network devices and uses the ARP flexibly. The outer appearance of the ARP protocol is not changed, and the other devices in the broadcast network segment do not need to modify the protocol or provide special function support.

Abstract translation: 本发明公开了一种用于检测IP地址冲突的方法和网络设备。 IP地址冲突检测方法包括：从广播网段收集所有ARP表项; 并对收集到的ARP表项进行数据检查，并且当检测到存在具有相同IP地址但不同的媒体访问控制（MAC）地址的ARP条目时，确定存在IP地址冲突。 网络设备包括收集模块和检测模块。 本发明可以通过采用一个或多个网络设备实现广播网段中IP地址冲突检测的功能，并灵活使用ARP。 ARP协议的外观不改变，广播网段中的其他设备不需要修改协议或提供特殊功能支持。