Patent application number | Description | Published |
20090183029 | Root Cause Analysis In A System Having A Plurality Of Inter-Related Elements - A method of performing root cause analysis for use in a system comprising a plurality of inter-related elements, wherein at least some of the elements experience one or more abnormal conditions, comprising defining one or more conditions for more than one element symptomatic of abnormal operation of the element; defining one or more causal relationships between the conditions and results on one or more related elements; compiling the conditions and causal relationships of each element for which conditions and relationships have been defined, as at least one continuation in a continuation passing style (CPS); receiving one or more observed events symptomatic of abnormal operation of at least one element of the system; processing the received events using the conditions and the continuations; concluding at least one root cause of the received events consistent with the received events; and outputting the root cause. | 07-16-2009 |
20090183030 | EPISODIC CAUSE ANALYSIS - Managing a root cause analysis and outputting an identified root cause, for use in a system comprising a plurality of inter-related elements wherein at least some of the elements experience one or more anomalous states, comprising receiving initial indicators of system element states symptomatic of anomalous element operation, selecting an episode expiration time based on the received initial indicators, receiving additional such indicators, correlating the indicators received prior to the episode expiration time based on pre-defined relationships between the system elements, generating possible causes of the anomalous element states consistent with the received indicators and the pre-defined relationships, asserting possible causes as actual causes, identifying an actual cause as a root cause, and outputting the root cause. | 07-16-2009 |
20090183031 | Engine For Performing Root Cause And Effect Analysis - An engine for performing root cause analysis on a system comprising a plurality of elements in a modeled domain, the engine comprising a module loader and parser for loading modules of computer code containing computer language statements modeling elements of the system, including one or more of model type definitions, conditions, causal rules, and continuations; and for parsing the computer language statements; a storage for storing the parsed computer language statements; a receiver for receiving conditions representing state changes of system elements, accessing the storage, and determining one or more parsed computer language statements to apply to the received conditions; a hypothesis generator for instantiating one or more hypotheses of potential causes of each received condition consistent with the received conditions and the parsed computer language statements; a blackboard for receiving the instantiated hypotheses, and determining a root cause of the received conditions based on the hypotheses consistent with the received conditions and the parsed computer language statements; and an output for outputting the determined root cause. | 07-16-2009 |
20100235493 | EXTENDABLE DISTRIBUTED NETWORK MANAGEMENT SYSTEM AND METHOD - An extendable network management system and method is provided to manage a network environment. The system can include a management server with a management application. In addition, the management application is configured to enable a user to manage the network environment. A extension application server can host a plurality of extension modules. The extension modules can supply management functions to the management application for defined network components. Further, a plurality of management engines can be located on the extension application server. The management engines can provide network probing and network event management, while integrating an extension modules' data object model with a management application's data object | 09-16-2010 |
20110096695 | METHOD AND SYSTEM FOR DISCOVERING A PURE HUB-AND-SPOKE TOPOLOGY - Presented is a method and system for determining network topology of a Virtual Private Network (VPN) in a Wide Area Network (WAN). The method includes obtaining a list of CE (customer edge) routers in a network, obtaining a list of prefixes advertised by each CE router, iterating, for each prefix, the list of prefixes advertised by all CE routers, verifying, in case a potential hub CE router already exists, whether the second CE router and the potential hub CE router are same, marking, in case a potential hub CE router does not exist, the second CE router as the potential hub CE router, and marking, if there exists a potential hub CE router that advertises every other prefix in the network, the potential hub CE router as hub site and other CE routers as spoke sites. | 04-28-2011 |
20110196964 | MANAGING EVENT TRAFFIC IN A NETWORK SYSTEM - A network system and associated operating methods manage event storms. The network system comprises an event analysis and control engine that detects and manages events occurring on a network. The event analysis and control engine receives events from a plurality of agents, and analyzes the events according to policies specified in a policies templates database. The event analysis and control engine processes raw network packets directly with less than full packet parsing to generate a filtered stream of events based on the analysis. The event analysis and control engine propagates the filtered stream of events to a monitoring system. | 08-11-2011 |
20120026914 | Analyzing Network Activity by Presenting Topology Information with Application Traffic Quantity - 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. | 02-02-2012 |
20120218893 | METHOD AND APPARATUS FOR ANALYZING A NETWORK - In a method analyzing a network, packet flow information of a virtual local area network (VLAN) implemented in the network is received. The packet flow information is sent from a node in the network and includes a VLAN identification (ID) of the VLAN. A representation of the VLAN is identified in a network topology based on the node and the VLAN ID of the VLAN. The packet flow information is associated with the representation of the VLAN. | 08-30-2012 |
20140325279 | TARGET FAILURE BASED ROOT CAUSE ANALYSIS OF NETWORK PROBE FAILURES - Provided is a method of performing a target failure based root cause analysis of network probe failures in a computer network. A determination is made whether all network probes have failed between a specific source network node and a destination network node. Based on said determination, a problem is identified in the computer network. | 10-30-2014 |