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psnmp is a LAN management software. Its main feature is guessing the topology of an Ethernet network.
This is the maintainer manual, documenting how the source is divided and some tricky algorithms. Thoses algorithms can be found in treeb and psnmp programs and in the package common library. We will discuss about the algorithm for topology, the VLAN configurations gathering throught SNMP protocol. The module dealing with trees and the database will described for non trivial functionality like the merge of trees, tree rotation for changing its root. Futhermore module organization and relations will be analysed.