Book Image

Mastering Linux Network Administration

By : Jay LaCroix
Book Image

Mastering Linux Network Administration

By: Jay LaCroix

Overview of this book

Linux is everywhere. Whether you run a home office, a small business, or manage enterprise systems, Linux can empower your network to perform at its very best. Armed with the advanced tools and best practice guidance of this practical guide, you'll be able to mold Linux networks to your will, empowering your systems and their users to take advantage of all that Linux-based networks have to offer. Understand how Linux networks function and get to grips with essential tips and tricks to manage them - whether you're already managing a networks, or even just starting out. With Debian and CentOS as its source, this book will divulge all the details you need to manage a real Linux-based network. With detailed activities and instructions based on real-world scenarios, this book will be your guide to the exciting world of Linux networking.
Table of Contents (17 chapters)
Mastering Linux Network Administration
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Tracing routing issues


The entire purpose of a network is to get data from point A to point B. If for some reason we aren't able to get data where we need it, it can sometimes be a pain to pinpoint exactly where the issue manifests itself. But through the process of elimination, pinpointing where routing issues manifest themselves shouldn't be too difficult.

Whenever I experience issues with a node being unable to communicate to a specific server or network, I like to work my way from their workstation back to the switch stack until I find the issue. To start, I check the obvious things, such as what the IP address is (or if the machine even has one) and then I also check the routing table. If the problem is intermittent, you would likely want to test the cable. For some reason, I've come across quite a few instances where a problem resulted from a bad cable. I don't know why, but it seems that other administrators I know, don't have this luck. But it never hurts to run a cable tester on...