Fluke Corporation

Airmagnet, Inc.

Dan Prescott

Bruce J Kosbab

John Monk

Robert Vogt

Doug Roberts

Craig Odell

Bruce Kosbab

Sean O'Brien

Shawn McManus

Morris C Galbreath

Shawn Mccanus

Roberts Doug

A method and apparatus is disclosed herein for dynamically scaling application performance analysis completeness based on available system resources. In one embodiment, the method comprises monitoring incoming network traffic and a rate at which the traffic is being analyzed and dynamically adjusting application performance analysis completeness, the analysis being performed on the observed network traffic.

Method and apparatus for dynamically scaling application performance analysis completeness based on available system resources

Network data gap is determined and reported to enable a user to validate that all the traffic that was intended to be monitored is being monitored in monitoring and/or troubleshooting tools for observation of network traffic and network installation and maintenance. Span port oversubscription, incomplete span configuration, incorrectly placed network taps and monitoring device packet drop may thereby be detected and reported as data gap.

Method and apparatus of measuring and reporting data gap from within an analysis tool

A method and apparatus for dynamic host operating system firewall configuration provides plural monitoring processes to monitor the firewall configuration of a host operating system and guest operating systems. When any firewall configuration change is detected by a monitor in a monitored guest operating system, an appropriate corresponding firewall change is made by the monitor to the host operating system.

Method and apparatus for dynamic host operating system firewall configuration

A network round trip time measurement apparatus and method employ an allocated storage in the form of a double ended queue, to store data received while awaiting a corresponding receipt of data to allow the network round trip time to be determined. When the allocated size of the storage is exceeded, storage stops until such time as data is received to allow network round trip time to be determined on at least some of the already stored data, whereupon storage can resume. This allows use in high and low volume traffic situations to automatically scale back the amount of data processed, so as to not overtax available resources.

Method and apparatus to dynamically sample NRT using a double-ended queue that allows for seamless transition from full NRT analysis to sampled NRT analysis

Network monitoring method and apparatus determines the zero window event data transfer delay, reporting the amount of data transfer delay caused thereby. Non-data-transfer-delaying zero window events can be separated from those causing actual delay, allowing reporting of actual delay events separate from non-delay causing events.

Method and apparatus to determine the amount of delay in the transfer of data associated with a TCP zero window event or set of TCP zero window events

Method and apparatus of transaction determination for non-tcp protocols employs a network analyzer to observe network traffic. Non-TCP protocol sequential traffic from a client to a server and sequential traffic following from a server to the client are considered to be one transaction for test and measurement analysis purposes.

Method and apparatus of transaction determination for non-TCP protocols

Network monitoring method and apparatus estimates the congestion window throughout the life of a TCP flow (socket connection), providing information useful for network performance analysis and troubleshooting.

Method and apparatus to estimate the sender's congestion window throughout the life of a TCP flow (socket connection)

A network analyzer, system and method determine whether or not network transaction data derived from network analysis should be stored, based on a configuration. Configuration strings (patterns) are entered via a configuration file, including specifying whether the string should be a prefix, suffix, other location or exist anyplace in the data. Storage enabling/disabling is provided for network transaction data. Configuration strings (patterns) can be specified for request/response summary/detail, and for specified parameters.

Transaction storage determination via pattern matching

Network traffic filtering is provided to enable gathering of data and statistics related to client/server traffic corresponding to valid and desired client to server/server to client traffic.

Method and apparatus of filtering statistic, flow and transaction data on client/server

End-user response time in a network is determined by an analyzer which measures client data transfer time, server response time, server data transfer time and, if the protocol is a TCP protocol, further measuring server network round trip time. End-user response time may be approximated by the sum of these determined times.

Growing community of inventors

Elbert, CO, United States of America

Dan Prescott