12. A system for identifying connections among nodes of a network, the system comprising: an interface configured to receive sets of data from a plurality of sources in the network, wherein each set of data relates to at least one connectivity level within a hierarchy of connectivity levels; a first inference engine configured to determine, at a first level within the hierarchy of connectivity levels, a first connectivity graph based on a first set of data indicating connections between nodes in the network at the first level; a second inference engine configured to determine, at a second level higher than the first level within the hierarchy of connectivity levels, a second connectivity graph based on a second set of data indicating connections between nodes in the network at the second level; and a physical path creator configured to identify at least one physical path between a pair of nodes of the network based on consolidating the first and second connectivity graphs.
12. A system for identifying connections among nodes of a network, the system comprising: an interface configured to receive sets of data from a plurality of sources in the network, wherein each set of data relates to at least one connectivity level within a hierarchy of connectivity levels; a first inference engine configured to determine, at a first level within the hierarchy of connectivity levels, a first connectivity graph based on a first set of data indicating connections between nodes in the network at the first level; a second inference engine configured to determine, at a second level higher than the first level within the hierarchy of connectivity levels, a second connectivity graph based on a second set of data indicating connections between nodes in the network at the second level; and a physical path creator configured to identify at least one physical path between a pair of nodes of the network based on consolidating the first and second connectivity graphs. 13. The system of claim 12 , wherein the first and second inference engines are configured to determine at least one of the first and second connectivity graphs based on at least one inference rule.