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Information protection method and device based on link layer discovery protocol

A link layer discovery and information protection technology, which is applied in the field of information protection based on the link layer discovery protocol, can solve the problems of LLDP packet data frame identity authentication, LLDP protocol security can not be well protected, etc., to achieve The effect of ensuring communication security

Inactive Publication Date: 2013-12-11
SUZHOU CENTEC COMM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the LLDP protocol, identity authentication for LLDP message data frames has not yet been implemented, so when various illegal data frames are invaded, the security of LLDP protocol operation cannot be well protected

Method used

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  • Information protection method and device based on link layer discovery protocol
  • Information protection method and device based on link layer discovery protocol
  • Information protection method and device based on link layer discovery protocol

Examples

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Embodiment Construction

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0030] An information protection method based on the link layer discovery protocol disclosed by the present invention, before the local device transmits the carried information to the adjacent neighbor device, encrypts and decrypts the information, and introduces the encryption and decryption algorithm into the LLDP protocol , to ensure the safety of the protocol operation. The local device organizes the information carried by itself into several different TLV packets, and encapsulates the TLV packets into link layer discovery protocol data units to form LLDP packets. The local device encapsulates the LLDP packets and transmits them to Neighboring devices such as figure 1 as shown, figure 1 It is the format of the encapsulated LLDP message, including: destination MAC address (DA), s...

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Abstract

The invention discloses an information protection method and device based on a link layer discovery protocol. The information protection method includes the steps that a home terminal device organizes self-carried information to form a plurality of different TLV messages, encapsulates the TLV messages into a data unit of the link layer discovery protocol to form LLDP messages, draws out LLDPDU fields encapsulated in the LLDP messages, carries out encryption on the TLV messages in the LLDPDU fields, and sends the encrypted cryptographs to a neighbor device adjacent to the home terminal device; the neighbor device decrypts the cryptographs, and carries out further analysis on the received LLDP messages to finish information interaction. According to the information protection method and device, an encryption method for both communication parties of a LLDP protocol is introduced, the information protection method and device ensure communication safety of the LLDP protocol, enable the device for operating the LLDP protocol to be not easily influenced by hostile attacks from the Internet and other aspects, and improve the safety of protocol operation.

Description

technical field [0001] The invention relates to the field of computer network data communication security, in particular to an information protection method and device based on a link layer discovery protocol. Background technique [0002] As the network topology and the devices in the environment become more and more diverse, the local device cannot judge the fault point in a timely manner, and because it does not know the peer device, it cannot analyze the functional differences with the peer device, resulting in a more complex network environment. Complicated and costly to maintain. [0003] In order to enable devices from different manufacturers to discover each other and exchange their own system and configuration information in the network, a standard information exchange platform is required, and LLDP (Link Layer Discovery Protocol) came into being. It provides a standard link layer discovery method, which can organize the main capabilities, management addresses, dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCY02D30/00
Inventor 陈利利杨锐
Owner SUZHOU CENTEC COMM CO LTD
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