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N Is For Networking deconstructs the concepts, jargon and acronyms of the data networking industry. Join recovering CCIE Ethan Banks with rising star Holly Podbielak for these episodes that will help you place context around networking terminology.
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N4N068: Meter’s Networking Grants Program (Sponsored)
Networking vendor Meter has recently launched their brand new Networking Grants program, putting money on the table to help you in your learning journey. In this sponsored episode, Matt Heim, Head of Partner Enablement at Meter, joins Ethan
N4N067: Level Up Your Home Network for Gaming
Thanks to a listener request, today’s episode talks about how to optimize your home network for gaming. Ethan and Holly discuss key factors such as latency, connection type, and bandwidth congestion as well as how wired connections, server
N4N066: Access Lists
Ethan and Holly are back to walk us through Access Lists. Access Lists regularly appear in networking device configurations and aren’t just for security. Ethan and Holly break down what an access list is, how an access-list is processed, th
N4N065: Well Actually 4: Multicast, MPLS, and More
Thank you for sending in even more follow ups! On today’s show, Holly and Ethan respond to listener comments and corrections on Multicast, MPLS, NAC, Twisted Pair Cabling, and more. A big thank you to everyone who sent in responses. If you’
N4N064: A Gentle Introduction to Border Gateway Protocol (BGP)
Border Gateway Protocol (BGP), the routing protocol of the global internet, is finding uses in all sorts of places in 2026 beyond internet routing. It’s a huge topic. Large books have been written about BGP and its related technologies, so
N4N063: Link Layer Discovery Protocol
Ethan and Holly tackle the Link Layer Discovery Protocol (LLDP). They explain how this protocol helps network engineers map network topologies and validate wiring. They also discuss how LLDP devices use frames to send information, mandatory
N4N062: Your First Wi-FI Network, Part 3
In the third installment of the Wi-Fi networks series, Ethan Banks and Holly Podbielak discuss the basics of wireless security, the standards related to roaming between access points, and how to analyze access points to figure out which AP
N4N061: Your First Wi-Fi Network Part 2
This week, Ethan and Holly continue their conversation around Wi-Fi. They go deeper into the benefits of Wi-Fi 7, look at what’s coming in Wi-Fi 8, and cover the differences among Multiple Input Multiple Output (MIMO), Orthogonal Frequency-
N4N060: Your First Wi-Fi Network Part 1
Have you ever wondered how data actually travels through a Wi-Fi network? Holly and Ethan break down the fundamentals of wireless networking, including radio frequencies and channel planning. They also address the complexities of roaming, h
N4N059: Twisted Pair Cabling
Copper twisted pair cabling serves as a fundamental component of Ethernet infrastructure and Ethan and Holly are here to break down how it works. They discuss the technical differences between cabling categories, how wire twisting cancels o
N4N058: Future-Proofing Your Career for the AI Era (Sponsored)
In this sponsored episode by Cisco we explore how agentic AI is transforming network operations and what it means for your career. Robert Barton, an AI Distinguished Engineer at Cisco Systems, joins Ethan and Holly to help us snap the artif
N4N057: The Art of Troubleshooting
As a network engineer, you’ll end up with a lot of weird problems to solve. Many times, the problems will not be with the network at all, and it’ll be up to you to figure it all out. But how? Ethan and Holly discuss techniques for effective
N4N056: A Wireless NAC Walkthrough
In the previous episode of N is for Networking, Jennifer “JJ” Jabbusch gave us a thorough overview of Network Access Control (NAC) for wired networks. This week we’re going wireless! JJ walks us through the major differences between wired a
N4N055: A Wired NAC Walkthrough
Today’s topic is Network Access Control (NAC) for a wired network. To help walk us through it all is Jennifer “JJ” Jabbusch, a network security architect, public speaker, book author, and co-host of the Packet Protector podcast. JJ and our
N4N054: Network Access Control (NAC) Basics
Today’s episode is part one of a three part series to break down Network Access Control (NAC). Ethan and Holly start simple by explaining what NAC is at a high level and all of the jargon and acronyms that come with it. They also cover wher
N4N053: Well Actually 03 – Multicast, Routing Protocols, RFC 1918
We asked for follow ups and you did not disappoint! On today’s show we respond to listener comments and corrections on multicast, routing protocols, security, and more. We also have a technical correction for the RFC 1918 Class B private ad
N4N052: Multicast Part 2
Lenny Giuliano, Sr. Distinguished Systems Engineer at HPE Juniper Networks, joins Holly and Ethan for another round of multicast. Part two helps fill in details not covered in episode 50. They cover how multicast traffic also affects Ethern
N4N051: MPLS Fundamentals
Today’s topic is Multiprotocol Label Switching or MPLS, a foundational technology that powers service provider networks and enterprise WANs all over the world. To help us break it down, we’ve invited James Bensley, a Network Tech Lead who’s
N4N050: Multicast Fundamentals
Today’s learning adventure is an overview of multicast. Ethan and Holly have invited a guest to share his multicast expertise: Lenny Giuliano, Sr. Distinguished Systems Engineer at HPE Juniper Networks. Lenny guides them through multicast p
N4N049: Understanding Firewalls
Today, Ethan and Holly provide an overview of firewalls. While cybersecurity is a separate discipline from network engineering, much of what happens in cybersecurity is interesting at the packet level, so there’s a good deal of overlap. It’
N4N048: QoS Fundamentals
Quality of Service (QoS) is a huge topic with a punishingly large group of acronyms. Join Ethan and Holly as they help you build a mental framework of what QoS is and what it solves. Not only do they break down essential acronyms, they also
N4N047: Virtual Router Redundancy Protocol (VRRP)
Go beyond the basics to understand the mechanics that keep your default gateway from becoming a single point of failure. Ethan and Holly demystify Virtual Router Redundancy Protocol (VRRP), which helps provide network redundancy. They break
N4N046: In-Band vs. Out-of-Band Management
Ethan and Holly discuss the major differences between In-band and Out-of-band (OOB) management and the pros and cons of both. They explore how to implement a proper OOB network and critical use cases where OOB is required. They also explain
N4N045: Audience Follow Up & 2026 Preview
If you’re curious as to what Ethan and Holly have in store for 2026, they give you a sneak peak on today’s episode. Hint: Some of these topics might include letters like B, G, P, Q, o, S, A and I. They also take time in this episode to answ
N4N044: Redundancy Vs. High Availability Part 2 – HA Networking Isn’t Free
In Part 1 of Redundancy vs. High Availability, we said that sometimes high availability and redundancy are considered to be the same thing, but we disagree. Holly and Ethan do agree that high availability can be considered a network design
N4N043: Redundancy vs. High Availability Part 1
In today’s chat, Holly and Ethan consider a question from listener Douglas who asks, “How do you approach designing a network for high availability and redundancy?” They start by defining differences between redundancy and high availability
N4N042: Meet MACsec
MACsec is a protocol for encrypting Ethernet frames on a local (though not always local) network. Ethan Banks and Holly Metlitzky have an ELI5 (explain like I’m 5) discussion as to what exactly is MACsec and how it differs from IPsec. They
N4N041: Switched Virtual Interface (SVI) and Integrated Routing and Bridging (IRB)
If you’ve ever wondered what the difference is between a Switched Virtual Interface (SVI) and Integrated Routing and Bridging (IRB), today’s show is for you! Ethan Banks and Holly Metlitzky start with some history and the basics of communic
N4N040: Mock Interview for a Network Administration Job
The job interview is an inescapable part of a career journey. Today on N Is For Networking, we conduct a mock interview with a candidate who’s applying for a junior network administration role. The goal is to give Toni Mrowetz, our candidat
N4N039: Configuring an IPsec Tunnel
We dive back into the world of IPsec with an episode dedicated to configuring IPsec tunnels. After discussing a listener comment regarding transport mode in IPsec tunnels, Ethan Banks and Holly Metlitzky work through topics such as multi-ve
