Determination of physical topology of a communication network
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United States of America Patent
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Feb 24, 2004
Grant Date -
N/A
app pub date -
Oct 28, 1999
filing date -
Oct 28, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Physical connectivity is determined between elements such as switches and routers in a multiple subnet communication network. Each element has one or more interfaces each of which is physically linked with an interface of another network element. Address sets are generated for each interface of the network elements, wherein members of a given address set correspond to network elements that can be reached from the corresponding interface for which the given address set was generated. The members of first address sets generated for corresponding interfaces of a given network element, are compared with the members of second address sets generated for corresponding interfaces of network elements other than the given element. A set of candidate connections between an interface of the given network element and one or more interfaces of other network elements, are determined. If more than one candidate connection is determined, connections with network elements that are in the same subnet as the given network element are eliminated from the set.
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