Same MAC (Media Access Control) address detection method and device based on LLDP (Link Layer Discovery Protocol)

Abstract

The invention discloses a same MAC (Media Access Control) address detection method and device based on a LLDP (Link Layer Discovery Protocol). The method comprises the following steps that: the device receives a LLDP message sent by a LLDP neighbor, wherein the LLDP message carries the MAC address of the LLDP neighbor and identification information which is used for uniquely identifying the LLDP neighbor; and when the device determines that the device is not the same as the LLDP neighbor and the MAC address of the device is the same as that of the LLDP neighbor, the device carries out alarm processing. According to the method and the device, a network fault caused by the fact that the MAC address of the device is the same as that of the LLDP neighbor can be located quickly and accurately.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and equipment for detecting the same MAC address based on the LLDP protocol. Background technique [0002] LLDP (Link Layer Discovery Protocol, Link Layer Discovery Protocol) provides a standard link layer discovery method, which can organize the main capabilities, management addresses, device identifiers, interface identifiers and other information of the local device into different TLVs (Type / Length / Value, type / length / value), and encapsulate it in LLDPDU (Link Layer Discovery Protocol Data Unit, Link Layer Discovery Protocol Data Unit) and publish it to its directly connected neighbors. After receiving the information, the neighbors send it as It is saved in the form of standard MIB (Manage Information Base, Management Information Base) for the network management system to query and judge the communication status of the link. [0003] In actual testing and use, sometimes tw...

AI Technical Summary

Problems solved by technology

[0003] In actual testing and use, sometimes two devices have the same MAC (Media Access Control, Media Access Control) address, but in actual applications, the same MAC address of two devices is a very serious problem, it will Caused many failures of Layer 2 and Layer 3 network protocols

In the existing LLDP protocol, LLDP neighbors can still be established when two devices have the same MAC address, and the existing LLDP protocol does not provide functions such as detection and error reporting of the same MAC address between LLDP neighbors

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