Abstract: A logical distributed server is generated for managing (Internet Protocol (IP) address allocation for an ad-hoc, self-forming peer-to-peer (P2P) network. The logical distributed server is generated according to messaging scheme where nodes on the P2P network allocate addresses for themselves and for clients connected to them. Each node implements a server that listens on the incoming client connections. Each node maintains data structures that represent the current state of an address database. Routing requests are fielded by the nodes from the clients and the messaging scheme is used to inform other nodes of its action so a consistent address space is maintained between all the nodes on the P2P network.

Abstract: The present invention is directed to a facility for selectively updating a diagram of a representational model of a dynamic system. The facility obtains a list of changes that have occurred to the model since the diagram was generated. The facility then receives user input requesting application to the diagram of a selected one of the changes. In response to receiving this user input, the facility modifies the diagram to reflect the selected change.

Abstract: A facility automatically generates diagrams of system using a stored model of the system. For example, the facility employs a database storing a model of interconnected elements that represents a computer network system comprised of interconnected components. The facility receives user input as to what the user wishes to place in the diagram. By selecting a shape in the diagram and displaying options with respect to that shape, the facility queries the database and filters out only the elements logically connected to the selected shape. The user can then view such filtered elements to decide which elements to add to the figure. The facility then automatically adds shapes of such elements to the figure, with appropriate connections to the initial shape selected.