While the OSI Model may seen like some useless & arcane topic that you only study to get your CCNA, I believe it is very valuable in understanding how networks work and how to troubleshoot them. In one of my most recent articles, I cover the OSI model and explain how you can use it to better troubleshoot your Cisco network.

To read the full article, visit:  Understand the OSI model to become a better Cisco troubleshooter