Topology finding method for switching devices

A technology for switching equipment and topology discovery, which is applied in data exchange networks, sustainable buildings, transmission systems, etc. It can solve the problems of long topology formation time, large resource consumption, and low convergence efficiency, so as to achieve easy programming and improve processing performance , the effect of processing less information

Active Publication Date: 2013-02-06
丁贤根
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AI Technical Summary

Problems solved by technology

[0003] Various existing public topology discovery methods use a large number of complex device sniffing methods, use a large number of information packets and record hop count methods to collect topology information, consume large resources, have serious path loss, and take a long time to form the topology. Many disadvantages such as low convergence efficiency

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  • Topology finding method for switching devices

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Embodiment Construction

[0058] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments, but it is not intended as a limitation of the present invention, and it only serves to explain and help understanding.

[0059] figure 1 It is the overall flowchart of the topology discovery method of this embodiment, including the following steps:

[0060] Step 10, the root device sends a Topology_Find broadcast message, and the directly connected switching device of the device will harvest the message.

[0061] In step 20, the overall method starts with step 10, so after root starts in step 10, if it is found that there is no global topology table in the current system, then root will create the table.

[0062] In step 30, the switching device receives the Topology_Find broadcast message, and the switching device forwards the broadcast message to other active ports, and performs the following steps at the same time.

[0063] Step 40, the switc...

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Abstract

The invention relates to a topology finding method for switching devices. According to the topology finding method, firstly, a root device sends a broadcasting data packet with a keyword of Topology_Find and builds a global topology structure table inside the broadcasting data packet; other switching devices send dev_info data packets to a data packet receiving port and maintain local device management tables and enable the local device management tables to send topology_info data packets to the root device; and the root device maintains device information to the global topology structure table according to the dev_info data packets and the topology_info data packets. The topology finding method has the advantages that the quantity of required data packets and information content is very small, topological convergence rate and operation consumption are extremely low, and the processing performance of a whole topology system is improved; moreover, the topology finding method provided by the invention is superior to other network topology finding methods in occupation of device system resources and network resources.

Description

technical field [0001] The invention relates to a topology discovery method of switching equipment, which uses an information interaction mechanism between equipment to achieve the topology formation of equipment in a fast convergence network, and can realize topology discovery of local area network equipment in a very short time. Background technique [0002] With the rapid development and application of local area networks, the number of switching devices in the local area network is also increasing. The point-to-point device management method has become increasingly unable to meet the management needs of managers for switching devices. The cluster management of switches requires its core foundation It is to deploy a discovery strategy for devices in the entire network environment, which is used to form connections between various devices in the current network environment and locate device information, so that network administrators can understand the current network condi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/751H04L45/02
CPCY02B60/31Y02D30/50
Inventor 冉宇晖王光移潘月红丁贤根胡建鹤
Owner 丁贤根
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