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1Victor WangAcuteSystem Testing 1Testing of Ethernet SwitchAcute Communications Yao-Tzung WangAcuteSystem Testing 2 Why Test and Network Subsystems Network Test Environment Alternatives Philosophy and Methodology of Testing Test Classification Functional, Negative and Stress tests Testing Network Subsystems An Example: Ethernet Switches: ASIC/System Useful Information SummaryContents2Victor WangAcuteSystem Testing 3 Keeping the network up and running Making the network better The cost-effectiveness of testing Third-party testingWhy Testing Networks ?Victor WangAcuteSystem Testing 4 File server (S1) Workstation (S2) Networking operating system: NOS (S3) Application, client-server database andworkstation desktop software (S4) Hubs, switches, bridges and routers (S5) Network segment (S6) Internetwork (S7)Seven Network Subsystems3Victor WangAcuteSystem Testing 5Recommended Test ObjectivesVictor WangAcuteSystem Testing 6Real-world loadEmulated networkEmulated loadEmulated networkReal-world loadReal-world networkEmulated loadReal-world networkNetworkLoadTest Network ConfigurationTest EnvironmentDimensions4Victor WangAcuteSystem Testing 7Real-worldEmulationEmulationReal-worldT est NetworkConfigurationNetwork LoadHighest cost - More time - More accurateLowest cost - Less time - Less accurateEmulation v

2 Victor Y.T Wang Acute System Testing 3 Keeping the network up and running Making the network better The cost-effectiveness of testing …