Abstract

Network topology discovery is an important method for the security situation perception of network system. The complexity and importance of the Internet of things system is increasing with each passing day. However, the existing network topology discovery method based on single protocol has the problem of low discovery efficiency and poor network adaptability. In order to solve these issues, a topology discovery algorithm based on multi-protocol is proposed in this paper. At first, the advantages and disadvantages of the topology discovery method based on a single protocol are analyzed. Next, the existing topology discovery algorithm based on the SNMP protocol and the LLDP protocol are improved. Then, the principle of multi-protocol topology discovery algorithm is elaborated. The algorithm is based on SNMP protocol and supplemented by LLDP and ICMP protocol. Experimental results show that the topology discovery algorithm based on multi-protocol has better network adaptability and detection integrity than the single protocol based topology discovery algorithm. Therefore, the multi-protocol topology discovery algorithm is feasible and advantageous.

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