Recent Articles

IP Subnetting Part 1 - IPv4

Despite the large number of jokes in high school about never needing to use mathematics after graduation, the art form known as IP Subnetting requires a solid grasp of math based on binary numbers (0, 1).  In this first part of my devoted attention on IP Subnetting, we'll focus on Internet Protocol version 4 (IPv4) addressing, some history, and the methods available to make IPv4 addressing go farther.

Understanding the "network" command

Many network engineers seem to misunderstand the use of the network command in routing protocols on Cisco IOS, especially once they see the usage in BGP.  This occurrence happens more frequently with those studying to become a CCNA, but may not be obvious to experienced engineers either.  Based on my own experience, I have very distinct memories of confusion when the concept I understood was first corrected by a more experienced engineer.  So let's breakdown the confusion.

Troubleshooting with OSI Model

At Layers 1-4, there are several tools or tricks available to quickly verify normal operations.  I have routinely used each of these tools for many years and expect many of them to be familiar.  Many of these tools are technology-specific, meaning that one tool has an application with one technology but not another.  I should also caution that the list below is not intended to be exhaustive or complete.  It's just a collection of my thoughts on what I find really useful.

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Many organizations list or discuss their core values as a means to reassure their clients or customers.  Primacore® is not many organizations.

We hold the following values to be so critical to our success and yours that we encourage you to judge our actions by what you see here.  There's no better way to show we're serious than to let our actions answer your doubts.

Core Value #1 — Integrity

"Integrity is doing the right thing, even if nobody is watching."

While it isn't always easy or convenient, having a high level of integrity is crucial to earning and maintaining the trust and patronage of our clients.  We cannot have a greater responsibility than doing everything we can to fulfill and meet the expectations of ourselves, our families and friends, and our clients.

Core Value #2 — Freedom

"For to be free is not merely to cast off one's chains, but to live in a way that respects and enhances the freedom of others."
— Nelson Mandela

Empowered by the freedom of thought, we want to share what we know, how we learned it, and why it should be important to anyone pursuing interests in Information Technology.  We really believe our clients should have the freedom to succeed in their business of choice and we're committed to sharing what we can to make that happen quickly and efficiently.

Core Value #3 — Pragmatism

"Give me six hours to chop down a tree and I will spend the first four sharpening the axe."
— Abraham Lincoln

Geometry holds that the shortest path between two points is a straight line.  In life and in IT, practical means to reach a goal should be valued highly enough to eliminate the waste of time, energy and money.  We feel very strongly that too many clients are sold a bill of materials and labor, while not getting a solution to make their business more effective or better positioned for the changes held by the future.  We're different and proud of it.