Packets DownRange
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Wireless networking technology has evolved rapidly over the years, with each new standard improving speed, capacity, and efficiency. One of the most groundbreaking advancements in this realm is 802.11ax, also known as Wi-Fi 6. As the latest iteration in the IEEE 802.11 wireless networking standard, Wi-Fi 6 is poised to redefine how we connect in … Read more
Fall and cold weather are rapidly approaching here in the Midwest. I have been away from PDR for too long. Lots of summer projects around the house, new trails in the woods, and working on the garage keep me from this newsletter. Now that it’s getting dark at 6AM, I have more time to dedicate … Read more
Physical security in a data center is critical as it serves as the first line of defense against unauthorized access, vandalism, theft, and environmental threats. Here’s a deeper dive into the various layers and strategies involved in ensuring comprehensive physical security for a data center. 1. Strategic Location Selection A. Risk Assessment for LocationChoosing the … Read more
If you’ve ever worked in IT, network engineering, or even set up your own home lab, you might have come across the term “console cable.” Although it may seem like just another connector, the console cable is actually a critical tool in networking and system administration. So, what exactly is a console cable, and why … Read more
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more
Having done consulting for years I saw many instances where BGP, especially ibgp, was used where OSPF would have been a better fit. Sometimes, this was for a specific reason; sometimes, it was just not knowing better. I am from the school, so don’t complicate things necessarily. In this article, I will outline some of … Read more
https://www.pcworld.com/article/2491457/the-fcc-takes-aim-at-broadband-data-caps.html It’s 2024 and yet some internet service providers in the US still charge you if you go over an allocated monthly data limit. Why? It’s not as if internet access is a finite physical resource. It doesn’t cost Comcast more to deliver you 1,001 gigabytes versus 999 gigabytes. Well, the United States Federal Communications … Read more
Why Clean Fiber Optic Cable Ends? Fiber optic networks are designed for high-performance data transmission with minimal interference or loss. However, contaminants on the cable ends can significantly degrade the quality of these transmissions. Below are some key reasons why cleaning fiber optic connectors is essential: 1. Maintaining Signal Integrity At the core of fiber … Read more
Open Shortest Path First (OSPF) is one of the most widely used link-state routing protocols in large enterprise networks, known for its scalability and efficiency in handling complex topologies. One of the key features that makes OSPF flexible is its support for different types of areas. OSPF areas are used to logically group routers, reducing … Read more
The Internet, as we know it today, is a vast network of interconnected systems that allow seamless communication, data transfer, and access to information. But have you ever wondered how data finds its way across such a sprawling network? This is where BGP, or Border Gateway Protocol. While it operates quietly behind the scenes, BGP … Read more
Anyone who works in a data center needs the following tools. Some are essential, and some make their life easier. We all want work to be easier, right? These are just five tools I think everyone who visits a data-center or other similar place should have. These are some tools you wish you had after … Read more