Abstract: A network management apparatus and method reduces the number of events presented in an event list to a user. In particular, the apparatus and method reduces the number of events, which are generated during the monitoring of a network and may be due to rebooting of a device on the network, presented to the user by determining, upon receiving an event relating to a device, whether a more significant event already appears in the event list relating to the device, and if so, preventing the received event from being presented in the event list to the user.

Abstract: A network management apparatus and method for identifying an event which is indicative of the underlying cause of more than one of a plurality of events detected by a network management station on a network is described in which the management station has knowledge of the topology of the network. Using the topology of the network, the apparatus and method considers the location of the network device causing each event in the plurality of events, and determines as the causal event, the event which has occurred at a location closest to the network management station. The method is preferably implemented in the form of a computer program.

Abstract: A network management apparatus and method for determining an optimum threshold value for a monitored characteristic of a network is described. The optimum threshold value is determined by counting a number of previously received events generated from values for a monitored characteristic which were above or below an existing threshold value for the monitored characteristic, and determining the optimum threshold value in dependence on the counted number. An optimum threshold value is provided, which is tailored to suit the network concerned.

Abstract: A network management apparatus and method is disclosed for determining an optimum threshold value for a monitored characteristic of a network. The optimum threshold value is determined by counting the number of previously received values for a monitored characteristic which values exceeded an existing threshold value for said monitored characteristic, and determining the optimum threshold value in dependence on the counted number. An optimum threshold value is provided, which is tailored to suit the network concerned.

Abstract: A network management apparatus and method reduces the number of events presented in an event list to a user. In particular, the apparatus and method reduces the number of events, which are generated during the monitoring of a network and may be due to rebooting of a device on the network, presented to the user by determining, upon receiving an event relating to a device, whether a more significant event already appears in the event list relating to the device, and if so, preventing the received event from being presented in the event list to the user.

Abstract: A method of monitoring a network of devices comprising defining at least two types of device, and monitoring the different types of device using different monitoring procedures, either interrogating said devices at different intervals or interrogating said devices using different protocols .The defined types of device comprise core devices and edge devices. The method also comprises determining the number of devices in the network to be monitored, and changing the monitoring intervals for each type of device in accordance with the determined number.