Topology discovery method and system based on SNMP

Abstract

The invention discloses a topology discovery method and system based on SNMP, and relates to the field of network topology discovery, and the method comprises the steps: configuring an NDP function for network equipment, enabling an NDP receiving and transmitting mode at an interconnection port between the network equipment, and transmitting an NDP message through the interconnection port betweenthe equipment; after the network equipment receives the NDP message, carrying out the validity judgment, and storing the neighbor information; enabling the network management server to acquire NDP neighbor information of the direct connection network equipment through an SNMP protocol message, and establishing a network topology information base; enabling the network server to query the NDP neighbor information one by one according to the IP addresses in the network topology information base, updating the topology network according to the obtained neighbor information of the query object, anddrawing the network topology. According to the topology discovery method and system based on the SNMP, a complex routing protocol does not need to be operated, the burden of a CPU in the topology discovery process can be reduced, and the topology discovery efficiency is high.

Description

technical field [0001] The present invention relates to the technical field of network topology discovery, in particular to a topology discovery method and system based on SNMP (Simple Network Management Protocol, Simple Network Management Protocol). Background technique [0002] The way computers are connected is called "Network Topology". Network topology refers to the physical layout of various devices interconnected by transmission media, especially where computers are distributed and how cables are routed through them. [0003] Currently, network topology discovery technologies mainly implement network topology discovery in two ways. [0004] 1. Run the private Layer 2 topology protocol between the devices, and gradually obtain the information of the network device nodes adjacent to the device through the initiator in an iterative or semi-iterative manner, and finally obtain the entire network topology information. However, the initiating device has to process the ent...

AI Technical Summary

Problems solved by technology

The device needs to support complex layer-3 routing protocols. At the same time, the device needs to calculate the topology based on the learned routes, which consumes a lot of CPU.

If the topology changes, the routing convergence time will be longer, which is not conducive to the timely update of the entire topology

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