Figure 1. Link and activity lights can tell you a lot about the connection between two network devices. All network architectures rely upon a physical (or RF) connection between devices.

This tip is excerpted from "Network troubleshooting and diagnostics," Chapter 4 of The Shortcut Guide to Network Management for the Mid-Market, written by Greg Shields and published by ...

Back when I worked in the Network Operations department at one of my previous jobs, we used to chuckle when a customer would call us reporting that “the Internet is down.” Now, I realize that there ...