N Is For Networking

It’s history day on N Is For Networking! We learn about the development of IPv6 directly from Bob Hinden, one of the pioneers who made it happen. Bob discusses his journey from early work on ARPANET to his significant contributions to IPv6. We also cover the transition from IPv4, the challenges faced during IPv6’s creation,... Read more »

Explore the intriguing world of high-speed Ethernet lanes! Discover what 'lanes' really mean and how they differ from Wi-Fi channelization. Learn why multiple lanes are crucial for achieving speeds like 40Gb and 100Gb, as single lanes can't handle full bandwidth. Delve into the physical aspects of cables and how breakout cables can boost connectivity. Lastly, see how LACP differs from Ethernet lanes and what it means for data transfer reliability and speed. A deep dive into the nuts and bolts of modern networking!

Today’s topic is the default gateway, essential for routing traffic between networks. We explain its purpose, configuration, and the consequences of incorrect settings. Using home networks as an example, Ethan and Holly illustrate how default gateways enable devices to communicate with external networks. The discussion also covers routing tables, subnet masks, and the differences between... Read more »

When building your network and buying equipment, is performance or cost more important? On today’s episode, we discuss the balance between performance and cost in selecting networking equipment. We also cover other considerations, including why you should understand client and network needs, the fluid nature of pricing, and the necessity of creative problem-solving. Bonus material: ... Read more »

Discover the essentials of packet analysis for tackling network issues. Learn how tools like Wireshark decode data and the role of Tcpdump in comparative analysis. Explore methods for capturing traffic through switch ports and the importance of filtering excess data. Understand how to trace performance issues and verify delivery with timestamps. The hosts share real-world examples of diagnosing slowness, emphasizing the need to monitor the entire application stack. Plus, get tips on training resources to boost your packet analysis skills!

Network engineers should be familiar with the Open Systems Interconnection (OSI) model, a framework for understanding network communications. On today’s show, Ethan and Holly delve into each of the model’s seven layers to discuss their functions, associated protocols, and practical implications for modern networking. They also talk about how the OSI model is, in fact,... Read more »

What are the most essential topics to understand for a new networkers? Ethan Banks and Holly Metlitzky address a listener’s question about foundational topics, covering what a network is, the differences between packet-switched and circuit-switched networks, and the nature of the internet as a “network of networks.” They discuss the importance of Internet Protocol (IP),... Read more »

Today we explore Virtual Local Area Networks (VLANs). This topic was prompted by a question from college student Douglas. We’ll explain the fundamental concepts of VLANs, such as their role in segmenting and managing network traffic, and the technical details for implementation. We’ll also address key topics including VLAN tags, access and trunk ports, and... Read more »

Discover the thrilling world of networking as the hosts unravel the mysteries of bandwidth and latency. They simplify these complex terms, making them beginner-friendly. Learn how latency affects data travel times and the surprising truths about bandwidth. Explore the shift from TCP to QUIC, a game-changing protocol improving internet efficiency. Dive into the challenges of voice communication, exploring how packet delivery and timing impact call quality. It’s a must-listen for anyone curious about the tech behind their internet experience!

Frames and packets: how are they different and why is it important to know those differences? On this first episode of N Is For Networking, join co-hosts Holly Metlitzky and Ethan Banks to learn the fundamentals about frames and packets, plus some bonus material on layers and addresses. N Is For Networking is the newest... Read more »