A synchronous communication protocol is designed and implemented for a distributed real-time system. The protocol operates on hierarchical rings and forms the communication backbone of a cluster based distributed system model that is designed to provide various distributed system functions such as clock synchronization, total event ordering, process group management, multicasting and fault tole...

With the growth of distributed systems in size, heterogeneity, pervasiveness and complexity of applications and network services, the effective management of distributed systems becomes more important and more difficult. Managers have to live with unstable, uncertain and incomplete management information. Individual hardware defects or software errors or combinations of such defects and errors ...

A synchronous communication protocol is designed and implemented for a dis tributed real time system The protocol operates on hierarchical rings and forms the communication backbone of a cluster based distributed system model that is designed to provide various distributed system functions such as clock synchronization total event ordering process group management multicasting and fault toleran...

Fault management is one of the key technologies that enable distributed and disaggregated mission architectures wherein multiple vehicles work cooperatively and autonomously in a cluster or formation, a typical mission concept involving small satellites. In this paper, we describe a software architecture, called Separable Architecture for Fault Isolation and Recovery (SAFIR), which addresses fa...

Open architectures are gaining popularity for Integrated Vehicle Health Management (IVHM) applications due to the diversity of subsystem health monitoring strategies in use and the need to integrate a variety of techniques at the system health management level. The basic concept of an open architecture suggests that whatever monitoring or reasoning strategy a subsystem wishes to deploy, the sys...

This thesis investigates monitoring and fault management of next generation networks, in particular in environments where the network nodes within an Autonomous System (AS) are centrally controlled and managed. Existing works on network monitoring and fault management are developed in an isolated and extremely complex manner, where the management protocols, such as SNMP, IPFIX and PSAMP, are se...

Cluster management middleware schedules tasks on a cluster, controls access to shared resources, provides for task submission and monitoring, and coordinates the cluster’s fault tolerance mechanisms. Thus, reliable continuous operation of the management middleware is a prerequisite to the reliable operation of the cluster. Hence, the management middleware should tolerate a wide class of faults ...

Future military communication networks will have a mixture of backbone terrestrial, satellite and wireless terrestrial networks. The speeds of these networks vary and they are very heterogeneous. As networks become faster, it is not enough to do reactive fault management. Our approach combines proactive and reactive fault management . Proactive fault management is implemented by dynamic and ada...