Avaya Inc.

Jose-Miguel Pulido

Omar Castillo Baldonado

Sean P Finn

Mansour Jad Karam

Michael Alan Lloyd

Faisal Siddiqi

James G McGuire

Herbert S Madan

Stephen H Ellis

Kanzhe Jiang

Ryan J Tetreault

Wayne A Feick

Timothy F Kaye

The present invention is directed to simultaneously monitoring the performance of differing communication paths between selected sites for detecting performance problems over one of the monitored paths, and moving packet traffic to one or more other better performing paths.

Assured path optimization

A monitoring system gathers both site-to-site measurements, and agent-to-agent measurements, wherein one or more agents are distributed in one or more sites in a distributed network environment. Site-to-site measurements between two sites, such as site one and site two, are obtained by testing between any agent at site one and any agent at site two. A measurement rate between sites and between agents is determined that allows for the detection of events, such as user perceivable events, without overwhelming the set of agents that form the distributed measurement system. With, for example, a scheduling mechanism used to schedule measurement tests of finite duration, as opposed to continuous streams of measurement packets, for each pair of agents, the test can be used as an indication as to whether the measurement system is overwhelmed.

Distributed measurement system configurator tool

The present invention provides embodiments of a network monitoring system that includes a scheduling agent for generating groupings of test agents and scheduling network measurements to be performed by each test agent grouping. The system may provide identifiers to members of first and second sets of objects. Then, the system can generate first and second sequences of the identifiers for each of the first and second sets, respectively and associate the identifiers to provide a plurality of groupings of identifiers. Finally the system may schedule a corresponding event for each of the grouping of identifiers. The systems and methods present can require very little state memory, ensure fair coverage of the object groupings; and can avoid the problems associated with round robin scheduling.

Hierarchical fair scheduling algorithm in a distributed measurement system

The present invention is directed to using measurement packets to compute network performance. Embodiments that send, receive and both send and receive measurement packets are described. Some embodiments are described that compute statistics based at least partly on measurement traffic. Some embodiments are described that communicate computed statistics within measurement traffic. Some embodiments are described that rank and select paths based at least partly on computed statistics.

Method and apparatus for communicating data within measurement traffic

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Barcelona, Spain

Jose-Miguel Pulido