Method for determining computer network topologies

Details Method for determining computer network topologies Method for determining computer network topologies

H - Electricity

04

L

H04L 12/26 (2006.01) H04L 12/24 (2006.01)

Patent

CA 2268495

A method of determining computer network topologies that dramatically reduces the computational complexity and greatly increases the accuracy of connection determination. The method involves classifying ports as either up or down. A source address table is compiled for each port of each data-relay device and each port is classified as either up or down. Up ports connect to other data-relay devices which report source address tables while down ports do not. After the classification, each source address in each up port table is replaced by the source address of the data-relay devices containing the down port whose table contains that source address. The tables of pairs of up ports are compared by intersection and minimal intersection defines the most probable connection for each up port. A variety of methods are used to remove invalid source addresses and the addresses of devices that have moved during the collection of the source address tables.

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