Abstract: Provided is a method of analyzing network traffic in a computer network. An Internet Protocol (IP) flow record of an IP flow in a computer network is selected. The selected IP flow record and additional IP flow records corresponding to the IP flow of the selected IP flow record are analyzed to obtain information related to the network traffic in the computer network.

Abstract: Provided is a method of analyzing network traffic in a computer network. An Internet Protocol (IP) flow record of an IP flow in a computer network is selected. The selected IP flow record and additional IP flow records corresponding to the IP flow of the selected IP flow record are analyzed to obtain information related to the network traffic in the computer network.

Abstract: In an example network flow analysis, sample packets can be received from a stream of packets over a time interval from a network element. The sample packets can be aggregated into a subclass of packets. A sample pool size of the stream of packets in the time interval, a number of sample packets received over the time interval, and a number of sample packets aggregated into the subclass of packets can be determined. An effective sampling ratio (ESR) from the sample pool size of the stream of packets in the time interval and the number of sample packets received over the time interval can be calculated. An extrapolated flow for the subclass of sample packets can be calculated by multiplying the ESR by the number of sample packets aggregated into the subclass of packets.

Abstract: A system for analyzing activity in a network collects, from one or more network components, flow information about traffic in the network. It associates the flow information with one or more application types. It enriches the flow information with topology information about the network. It then presents a report. The report identifies a quantity of traffic flowing into or out of a first network component as traffic corresponding to one application type, and also identifies a second network component to or from which the traffic is being sent.

Abstract: Presented is a method and system for deriving the path of a traffic engineering tunnel in a network using Multi Protocol Label Switching, MPLS, traffic engineering and a Management Information Base, MIB, describing managed objects of the network. The method comprises: obtaining node connectivity information from the MIB; obtaining network connectivity information from a network node manager; and deriving tunnel path information based on the node connectivity information and the network connectivity information.

Abstract: Presented is a method and system for deriving the path of a traffic engineering tunnel in a network using Multi Protocol Label Switching, MPLS, traffic engineering and a Management Information Base, MIB, describing managed objects of the network. The method comprises: obtaining node connectivity information from the MIB; obtaining network connectivity information from a network node manager; and deriving tunnel path information based on the node connectivity information and the network connectivity information.

Abstract: A method and apparatus is disclosed for processing performance data from a communications network in which the performance data is converted from a time-series format into a time-frequency format and one or more frequency components removed prior to the data being utilised to monitor the network.