When troubleshooting network problems, you might follow a trial-and-error approach that eventually leads you to the answer, but a more organized method will save you time and make your troubleshooting more efficient. Global Knowledge provides a guide, "TCP/IP Sleuthing: Troubleshooting TCP/IP Using Your Toolbox," that offers a concise troubleshooting methodoloy, based on the OSI model.
The OSI model divides the network architecture into seven layers:
Layer 7 Application
Layer 6 Presentation
Layer 5 Session
Layer 4 Transport
Layer 3 Network
Layer 2 Data Link
Layer 1 Physical
This handy 13-page white paper outlines troubleshooting tips for each layer using common network tools such as ARP, ping, NETSTAT, and protocol analyzers. If you need more method to your madness, download this guide from the TechRepublic directory.
Selena has been at TechRepublic since 2002. She is currently a Senior Editor with a background in technical writing, editing, and research. She edits Data Center, Linux and Open Source, Apple in the Enterprise, The Enterprise Cloud, Web Designer, and IT Security blogs.