The OSI model defines protocols for how a network technically handles communications at the various functional layers. Starting with electrons and photons at the physical layer (Layer 1), the model ...

Getting a handle on the invisible part of your network—the protocols that are in use—can be of enormous value in helping you detect problems. So far, we've talked about the tangibles of your ...

If you have anything to do with networked AV and you're not well-versed in the OSI model, we've got you covered. You will learn the fundamental ideas around getting data from host A to host B over a ...

First, and foremost, the OSI stack is just a theoretical reference model. There is no actual OSI software. It has been around since about 1980, and it is based upon recommendations from the ITU-T and ...

Knowledge of the structure of Internet Protocol (IP) packets is a fundamental part of understanding the Internet and how information moves from one point to another. The benefits of such knowledge ...

Peeling back the layers of IoT devices reveals most of them are nothing more than what are already on the Internet in the form of present-day M2M devices. In just six years, according to Cisco Systems ...

Most IT users will be familiar by now with the idea of `the software-defined something or other’. Indeed, there vendors that already talked about software-defined everything, which really should cover ...

So far, we've talked about the tangibles of your network—the cabling infrastructure, as well as the switches, hubs and routers. Those are things you can see and touch. But there are invisible ...