Medium/media access control address conflict detection method, device and system

Abstract

The invention provides a medium / media access control (MAC) address conflict detection method, which comprises that: before accessing a network, local network equipment transmits a MAC address conflict detection request message to a destination multicast address, wherein the request message carries a current MAC address of the network equipment; destination network equipment receiving the request message extracts the MAC address from the message request, detects the MAC address, and when judging that the extracted MAC address is the same as own MAC address, transmits a MAC address conflict detection response message to a requesting multicast address; and the local network equipment receiving the response message generates a new MAC address. The invention also discloses a MAC address conflict detection device and a MAC address conflict detection system. By the method, the device and the system, the occurrence of MAC address conflicts can be effectively avoided, the network equipment can be ensured to access the network normally, normal network service can be provided for a user, and risks in network attacks can be reduced.

Description

technical field [0001] The present invention relates to an Ethernet access technology, and in particular, to a medium / Media Access Control (MAC) conflict detection method, device and system. Background technique [0002] At present, the Internet is an Internet Protocol Version 6 (IPv6) network. With the development of network technologies such as smart cities, electronic earth, and the Internet of Things, people's demand for accessing IPv6 networks anytime, anywhere continues to expand. All kinds of wired and wireless network devices are continuously connected to the IPv6 network. Moreover, with the development of virtualization technology, virtual network devices are continuously added to the IPv6 network. However, because most of the MAC addresses of existing network devices are 48-bit addresses that are randomly generated at the factory, they cannot be changed. In this way, with the increasing number of network devices connected to the Layer 2 switching network, it is m...

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