Finisar Corporation

Steve Klotz

Jason David Mann

Timothy Lane McDaniel

Mark J Lanteigne

Michael D Connell

Embodiments of the invention provide a method for determining errors and metrics in a computer network. The method includes positioning an analyzer in communication with the network, capturing a data trace of the network with the analyzer, determining a network device topology from a first processing of the data trace, building user layer protocols using a second processing of the data trace and the determined device topology, determining errors in the network device topology using protocol experts applied to the user layer protocols in conjunction with the determined device topology, and displaying at least one of the device topology and the determined errors to a user.

Network analysis tool

Embodiments of the invention provide a scalable method for analyzing a network. The method includes generating a data trace representative of the network, determining a topology for the network from the data trace, and sequentially analyzing each frame in the data trace to determine at least one of network errors, warnings, and metrics. The analysis of each frame generally includes analyzing a first protocol layer of the frame with a first expert engine, determining if a second protocol layer is present in the frame, passing the frame to a second expert engine, and passing the frame to additional expert engines if the frame contains additional protocol layers.

Network analysis scalable analysis tool for multiple protocols

Embodiments of the invention provide a method for analyzing a data trace representative of an FC network. The method includes determining a topology of the network, filtering the data trace for open commands that are not perceived by at least one analyzer positioned in communication with the network and eliminating devices associated with these open commands not received by an analyzer from further analysis, filtering the data trace for failed open commands and eliminating devices associated with the failed open commands from further analysis, and filtering the trace data for frames to destinations that are not received by the analyzer and eliminating devices associated with these frame from further analysis. The method further includes filtering frames transmitted when a loop is in closed state and eliminating devices associated with transmitting frames when a loop is closed from further analysis, and conducting error analysis of the network topology not eliminated by a filtering step.

Network analysis omniscent loop state machine

Embodiments of the present invention generally provide a system and method for testing integrity of data transmitted across a network connection. In one embodiment, the method generally includes creating one or more test threads on one or more test clients attached to a server through the network connection. The method further includes, for each test thread, generating a data load on the data connection by repetitively writing test data patterns to a common data file on the server, reading data patterns from the common data file, and comparing the data patterns read from the common data file to the test data patterns written to the common data file to detect data corruptions. The method may further include measuring data throughput between the one or more test clients and the server and generating debug information if a data corruption is detected by one of the test threads.

Scalable network attached storage (NAS) testing tool

Embodiments of the present invention generally provide a system and method for testing integrity of data transmitted to and from a target device through a data connection. In one embodiment, the method generally includes creating one or more test threads. The method further includes, for each test thread, generating a data load on the data connection by repetitively writing test data patterns to the target device and reading data patterns from the target device using a synchronous I/O dispatch method, measuring data throughput to and from the target device while generating the data load, comparing the data patterns read from the target device to the test data patterns to detect data corruptions. The method may further include generating debug information if a data corruption is detected by one of the test threads.

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Austin, TX, United States of America

Steve Klotz