Metodologia pragmática para avaliação de desempenho e planejamento de capacidade em redes de computadores

Abstract

Network management: network management objectives: to ensure performance and good performance, reduce maintenance costs, distribution of managers in the network, generic management architecture: manageable devices, manager and agent process, management information base, primitives Management and management protocol, functional areas of management: fault, accounting, configuration, security and performance management, management standards: CMISE / CMIP - OSI management model [1] [5], SNMP - simple Network management protocol, RMON - remote monitoring, sniffers, comparative summary: SNMP / RMON / sniffer, management tools; Management of performance in corporate environments: overview of a corporate environment, the importance of performance management, fundamental concepts about performance management: service, resource allocation and characterization of services, indicators of quality of service, demand on the service, Main activities of performance management: monitoring of events relevant to system performance: monitoring for performance verification, monitoring for workload characterization, performance analysis: analytical modeling, discrete event simulation, capacity planning, key management targets Of performance: traffic study: rate of physical errors, use of pass through, disputes through the medium, data discarding in network node buffers, network node throughput, system latency, traffic volume and traffic characterization, Matrix of interest of traffic, study of services: protocols involved, characterization of a service, array of services, response time, study of servers and equipment: CPU, memory, disk, communication ports; Proactive methodology for performance management: model of a generic communication system: clients, communication facilities, service providers, presentation of the proactive management methodology: zero phase - initial conditions, phase one - proactive monitoring, Phase two - performance analysis, phase three - capacity planning, methodology specialization for computer networks: implementing the zero phase - initial conditions: functional group for application of the methodology, list of performance indicators and quality standards, frequency of monitoring , Period or duration of the monitoring, implementing phase one - proactive monitoring, implementing phase two - performance analysis and implementing phase three - capacity planning; Case study: implementing the proposed methodology: zero phase - initial conditions, phase one - proactive monitoring, phase two - performance analysis, phase three - capacity planning.