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This work presents a dependable fully distributed network management tool based on the Internet standard network management protocol, SNMP (Simple Network Management Protocol). Multiple SNMP agents running the Hi-ADSD with Timestamps, a Hierarchical Distributed System-Level Diagnosis algorithm with Timestamps, monitor themselves and a configurable set of network services and devices, issuing controlling commands depending on the results. The system is dependable in the sense that it continues working even if only one agent is fault-free. A MIB (Management Information Base) allows the definition of test procedures specific for each managed entity. The system presents a configurable Web interface that allows the human manager to monitor the network from any agent. Practical results are presented, including the construction of a resilient Web server built on top of the tool.
Date of Conference: 2002