| 摘要 |
Method computer program and system and apparatus are provided for indicating underutilized network devices (3) providing services in a data communications network (2), allowing restructuring of the network to improve efficiency. A data processing system (7) receives network traffic data comprising, for each connection established with a network device (3) : a source device identifier and a destination device identifier for the connection; data identifying a service provider and a service consumer for the connection; and traffic rate data indicating traffic flow rate on that connection. The system (7) filters the network traffic data to eliminate data for predefined connections, and then produces a graph from the filtered data. The graph represents the connections between devices (3) indicated by the filtered data by links between nodes of the graph. The traffic rate data for a said connection is associated with the corresponding link in the graph. The system (7) analyzes the graph to identify any "islands", i.e. sets of interconnected nodes which are not connected to any other node representing a device (3) within the network (2). The system (7) then indicates any underutilized network devices (3) by producing an output dependent on traffic rate data associated with any link to an island from outside the network (2). The network (2) can then be restructured dependence on this output to reduce underutilization of network devices (3).
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