In a network through which service providing nodes are interconnected, one or more software elements at each service providing node process the network operations. A client interceptor coupled in an examine node to a selected software element intercepts transmissions from the software element to record transmission flow control information. A server interceptor coupled in the examine mode to the selected software element intercepts transmissions to the software element to record transmission flow control information. An administrative node of the network examines the transmission flow control information from the selected software elements to assess network operation.