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CCNP Practical Studies: Troubleshooting by Donna L. Harrington

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Protocol Analyzers

Protocol analyzers generate packets and provide real-time data to interactively capture traffic with a layered approach. You will see just how theoretical the OSI model is not after using an analyzer. There is a capture and display mode for the individual packet flow. You can generate and edit frames for capacity planning and load testing of devices such as switches, routers, servers, and workstations. Record, interpret, and analyze the life of a packet. Get meaning out of frames. Interpret lots of detail on applications such as Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), FTP, and TFTP. Products include Network Associates Sniffer, WildPacket's EtherPeek, Network Monitor from Microsoft, and so on.

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