Method and device for discovering physical network topology

Abstract

The invention provides a method and device for discovering physical network topology. The method comprises the following steps: with a subnet as a unit, carrying out automatic discovery of physical network topology of the subnet according to a media access control address forwarding table and an address resolution protocol table of network equipment in the subnet; and analyzing the discovery result of physical network topology of the subnet and obtaining total physical network topology. The device comprises a subnet physical network topology discovery module and a total physical network topology obtaining module. The embodiment of the invention carries out automatic discovery of physical network topology in the subnet by utilizing the media access control address forwarding table and the address resolution protocol table in network equipment, thus overcoming the defect that discovery of physical network topology in the prior art depends on the proprietary protocols of the network equipment manufacturers, and meanwhile, discovery of total physical network topology is realized according to the discovery result of subnet physical network topology.

Description

technical field [0001] The embodiment of the present invention relates to a network management technology of a data communication network, and in particular to a method and device for discovering a physical network topology. Background technique [0002] With the rapid development and increasing complexity of computer network technology, users have higher and higher requirements for network management, and network topology discovery has become a prerequisite for many network management tasks. Network topology discovery mainly includes discovery of network devices and discovery of physical network topology (that is, physical links between network devices). [0003] In the prior art, network equipment manufacturers usually discover the physical network topology according to their proprietary protocols implemented on network equipment, but this method relies on the network equipment manufacturer's private protocols, which has great limitations and is not suitable for All netwo...

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Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for discovering a physical network topology, which is used to solve the defect in the prior art that the discovery of the

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