Post Views: 1,484 Adaptive Bitrate Streaming (ABR) is a video delivery method that dynamically adjusts the quality of a stream in real time based on three things: network conditions, device capability, and player performance. Instead of delivering a single fixed-quality, and therefore fixed transfer rate video, ABR continuously selects the most appropriate bitrate to maintain
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Post Views: 818 The following is a step by step lab exercise to examine ABR – Adaptive Bit Rate used in modern video content delivery. I won’t explain ABR here – you can read about ABR and what it is, and how it works here in a recent post. We will analyze a synthetic but
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Post Views: 3,385 Most people do not know this, but TCP CUBIC is the dominant congestion control algorithm used in modern TCP/IP networks. It is designed to efficiently utilize high-speed, long-distance links while maintaining fairness across flows with different round-trip times (RTTs). Today, it is the default congestion control algorithm in most Linux systems, and
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Post Views: 2,437 I have been teaching Wireshark classes since the early 2000’s, and using it since it was called Ethereal. My usage has primarily focused around troubleshooting network issues that have a packet capture associated with them. My fellow troubleshooters will tell you that this is not always the case. But, if we are
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Post Views: 1,630 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture In our previous post I showed you how to use Wireshark’s Ring Buffer feature. I think we can all agree how great that feature is. In this
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Post Views: 3,535 Check out these great references: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture Wireshark’s Ring Buffer feature is a capture mechanism feature that automatically rotates packet capture files based on size or time limits, overwriting the oldest files when a defined limit
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Post Views: 15,301 At CellStream, we design and deliver technology training programs specifically aligned to the realities of today’s broadband, telecommunications, and IP-based networking environments. Our focus is not generic IT instruction — it is highly curated, operationally relevant education built for service providers, network engineers, broadband technicians, sales teams, leadership, and customer-facing staff. Our
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Post Views: 1,953 The following is a technical SWOT analysis for Network Engineers, Security Engineers, and Senior Technicians. I apologize for the high number of acronyms used below, but hey, this is networking! In networking, Zero-Trust is not a single product or control. It’s an architecture and operating model where no network location (LAN, WAN,
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Post Views: 1,841 What I have created here is a somewhat technical SWOT Analysis for Network Engineers and Technicians for one of today’s top networking subjects of interest: the high speed needs being delivered by Ethernet technology for AI and for Data Centers. Introduction: Why High-Speed Ethernet Matters in AI Infrastructure High-Speed Ethernet has become
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Post Views: 961 A SWOT analysis is a structured analytical framework used to evaluate a subject from four complementary perspectives: Strengths, Weaknesses, Opportunities, and Threats. We have been providing SWOT analyses for our clients since our inception. You can read more about that service here. For now, however, let’s simplify and explain what a SWOT
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Post Views: 3,794 Check out these additional IPv6 Resources Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School OK folks, based on some feedback from Reddit, I decided to update this post from 2013. Modern Linux distributions have largely deprecated the legacy net-tools suite (which
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Post Views: 2,404 A broadband technician working with fiber optics must understand both the theory and the hands-on operational realities of fiber networks. The following areas represent the core knowledge required to install, maintain, and troubleshoot fiber effectively in access and distribution networks. 1. Fiber Fundamentals Technicians must understand how fiber carries data as light,
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Post Views: 1,323 Since 2023, we have shared information that helps folks that travel the western US. We learned about this site that has live cameras and warnings of road conditions, travel information, traffic cams, weather warnings, incidents, and much more from a colleague (thank you Doug Galarus!), and have used it on our many
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Post Views: 2,063 Well, the title “The Story of Secretly Applying ISD in Courses Here” is a little misleading. I have never denied it. Some people have recognized it. I just never made a big deal of it. So let me explain. First, what is ISD? Well, a gentleman named Harold Stolovitch, along with his
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Post Views: 11,530 Below is a clean, technician-focused list of the Windows PowerShell commands used for Wi-Fi and WLAN troubleshooting, organized by function. This aligns well with broadband-tech workflows, capture analysis, and WLAN Operations fundamentals. You will find a more comprehensive and updated version of this post at our Patreon community. You will find the complete
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