Network topology discovery method and device

Abstract

The invention provides a network topology discovery method and device. The method comprises the following steps of: (1) in the collection process of a three-layer network topology structure, acquiring an IP route table of the current routing device; (2) traversing routes in the IP route table, and judging whether the currently traversed route is a direct route, if yes, executing the step (3), wherein the direct route shows that the current routing device is directly connected with a two-layer network corresponding to the next hop IP address and the subnet mask of the current route; and (3) querying whether the current routing device has neighbor information, if yes, determining that the current routing device still stays in the two-layer network, wherein the current routing device is connected with at least one two-layer network device; and acquiring the topology structure of the two-layer network collected by the current routing device. By adopting the invention, the purpose of acquiring the topology structure of the entire network by using the unified network topology discovery mode is achieved.

Description

technical field [0001] The invention relates to network management technology, in particular to a network topology discovery method and equipment. Background technique [0002] In network management technology, network topology is a method to express the logical connection relationship and physical connection relationship of the network. Through the network topology, administrators can intuitively understand the current operating status of the network, accurately locate faults in the network for isolation, and accurately analyze possible bottlenecks in the entire network, so as to transform the network in a targeted manner and improve network performance. overall performance. Therefore, as the scale of the network becomes larger and larger, higher requirements are put forward for the accuracy and real-time performance of network topology discovery. [0003] The current network topology discovery mainly includes network layer (L3: Layer 3) network topology discovery and dat...

AI Technical Summary

Problems solved by technology

[0005] According to the above description, it can be seen that the existing technology does not obtain the topology structure of the entire network through a unified network topology discovery method, but uses two separate and different network topology discovery methods to obtain the topology of the entire network. In this way, the complexity of network management will be increased. Moreover, when obtaining the topology structure of the entire network in the prior art, it needs to be triggered by the outside world such as the user, which also increases the workload of the user.

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