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 ...

A couple posts ago, we talked about Layer 1 of the OSI Model — the Physical Layer. Today, we’ll start our climb up the Model with a visit to Layer 2, the Data Link Layer. The Data Link Layer is one of ...

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 ...

Network protocols are formal standards and policies consisting of rules, procedures, and formats that define how data is exchanged over networks. They ensure that devices can communicate effectively, ...

The IIoT is at the basis of the so-called Smart Factories, new advanced manufacturing units of the fourth industrial revolution. Smart sensors, super-fast connections, artificial intelligence ...

Integrated Services Digital Network (ISDN) provides for digital transmission over ordinary telephone copper wire as well as over other media uses. In this continuation of his tip on ISDN ...

Ethernet is a layer 2 data link protocol that is widely used with the TCP/IP protocol, which resides at layers 3 and 4. To understand network communications, it is essential to learn about the ...

Explains the three layers critical to network design: Access, Distribution, and Core Anyone involved in networking and/or telecommunications should be somewhat familiar with the use of layers. Many ...

Thanks for your comments on my first EtherGeek post on understanding the OSI Model. I especially enjoyed learning new ways to remember the OSI Model; for example: Please Do Not Throw Stale Pizza Away.