Wandel & Goltermann Technologies, Inc.

Netiq Corporation

Roger A Lingle

Craig D Anderson

Mark Burton Anderson

Eugene N Cookmeyer

Lee E Wheat

Ralph A Daniels

Peter James Schwaller

Steven Thomas Joyce

Dana Borger

Joan Marie Bellinghausen

Scott Alan Southard

John C Christensen

David V H Quan

Dynamic filtering methods, systems and computer program products are provided for network performance test results which may apply network troubleshooting expertise and knowledge of network topology to select and display test results in a manner which may facilitate analysis of those results by IT staffs. In a further aspect of the present invention, a severity index is provided which may be generated based on exception events from a plurality of network performance measurements, for example, response time, throughput and availability, which measurements are generated from test results obtained from agents located on various devices on a computer network. The test results may be obtained from either passive application monitor agents or active network test agents. In another aspect of the present invention, the exception events may be detected based on automatically generated threshold criteria which may be provided user selectable sensitivity and may be based on a specified percentage criteria relative to baseline performance results. In a further aspect of the present invention, the test results may be stored using data buckets with the number of data buckets and/or the range of each of the data buckets being selected to provide a desired overall range and granularity for each of the plurality of network performance measurement types. The range (width) of some of the data buckets may be narrower than others to provide greater resolution in a region of interest.

Methods, system and computer program products for dynamic filtering of network performance test results

A new and improved protocol analyzer for monitoring digital transmission networks is disclosed. The protocol analyzer of the present invention is capable of displaying station level statistics, network statistics, real-time event information, and protocol distribution. The protocol analyzer of the present invention is additionally capable of creating baseline network performance information and displaying the baseline information simultaneously with real-time performance information, pre-programming monitoring sessions, and generating presentation-quality reports in conjunction with analyzing digital transmission networks, all in real time.

Protocol analyzer for monitoring digital transmission networks

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Raleigh, NC, United States of America

Roger A Lingle