Airmagnet, Inc.

Fluke Corporation

Netscout Systems, Inc.

Netscout Systems Texas, LLC

Robert Vogt

Dan Prescott

John Monk

Bruce J Kosbab

Anil K Singhal

Paul Barrett

Peter Reilly

Lei Xiong

Arong Pan

Matthew D Richards

Bruce Kosbab

Doug Roberts

Shawn McManus

Sean O'Brien

Benjamin Nelson

Blair Pendelton

Bryan K Laver

Geoff Akens

Matthew Richards

Shawn Mccanus

Roberts Doug

Generating synthetic transactions with packets is provided. A synthetic transaction generator can store, in a packet capture trace file, packets corresponding to a test of a service provided through a network. The synthetic transaction generator can transmit the packet capture trace file to a data processing system to cause the data processing system to play or analyze the packet capture trace file to evaluate the performance of the service provided by the service provider.

Generating synthetic transactions with packets

A method and system for testing of a communication network utilizing a plurality of test agents in the communication network using a deterministic decentralized scheduling of the plurality of test agents to test a single network service. Determining an optimal time period for executing a test of the single network service by each of the plurality of test agents without requiring global knowledge of the system and without requiring centralized coordination of individual agent test schedules.

Analysis of network performance using deterministic decentralized scheduling across distributed test agents

A method for visual representation of end user response time (EURT) in a multi-tiered network application is provided. Search criteria for searching a repository of client statistics records is received. The search criteria specifies identification information pertaining to a user of a multi-tiered network application experiencing application performance problems and a time period associated with the application performance problems. The identification information identifies an IP address of user's computing device. A plurality of client statistics records matching the search criteria is retrieved from the repository. The retrieved plurality of client statistics records is sorted based on measurements of performance parameters. A graph representing relevant topology hierarchy of the multi-tiered network application is presented to a user based on the sorted client statistics records. The graph visually identifies connections between nodes of the multi-tiered application. The identified connections include potential root-causes of the specified application performance problems.

Visual representation of end user response time in a multi-tiered network application

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

A storage system includes network monitoring device having NIC coupled to network and configured to capture raw data packets. The system further includes 4 data repositories. A first repository stores captured packets. A second repository stores captured packets' metadata. A third repository stores captured packets' and metadata's timestamp indexed data. A fourth repository stores captured packets' data flow. The storage system further includes a storage engine coupled to the repositories. The storage engine receives packet search criteria specifying at least a first time range. Data flow information associated with the search criteria is retrieved from the fourth repository. The retrieved data flow information is associated with a second, narrower, time range. Metadata information associated with the second time range is retrieved from the second repository using corresponding timestamp indexed data. Captured packets associated with the retrieved metadata are retrieved from the first repository using corresponding timestamp indexed data.

Fast packet retrieval based on flow ID and metadata

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

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

Growing community of inventors

Colorado Springs, CO, United States of America

Robert Vogt