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Sams Teach Yourself Network Troubleshooting in 24 Hours, Second Edition by Jonathan Feldman

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Summary

If you have something that is broken, comparing it to something that works can be a quick way to establish what exactly is broken. Although it’s difficult to compare the configuration of seminally different servers, comparing their overall revision levels and file versions can help to rule out a difference problem. In the case of hardware appliances such as routers, switches, print servers, and network attached storage, you will want to consider firmware levels as well as the configuration file.

Comparative anatomy works particularly well when you’re considering other objects on your network, such as user setups and workstation configurations. Sometimes, if you’ve troubleshot the problem down to a particular configuration, you can replace ...

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