Heavy Networking
byPacket Pushers
Technology
Heavy Networking is an unabashedly nerdy dive into all things networking. Described by one listener as "verbal white papers," the weekly episodes feature network engineers, industry experts, and vendors sharing useful information to keep your professional knowledge sharp and your career growing. Hosts Greg Ferro, Ethan Banks and Drew Conry-Murray cut through the marketing spin to explore what works—and what doesn't—in networking today, while keeping an eye on what's ahead for the industry. On air since 2010, Heavy Networking is the flagship show of the Packet Pushers podcast network.
Episodes(40 episodes)
Episode 827
When Buffers Attack: Understanding Buffers to Better Diagnose Network Weirdness
Today’s episode covers buffers, the space between ingress and egress where a packet might have to live for a fraction of a second if the egress port is tied up transmitting other packets. This topic came courtesy of John Howard who joins Drew and Ethan as a co-host to discuss buffers with guest Rob Sherwood. How... Read more »
Published: May 15, 2026Duration: 1h 12m 55s
Episode 826
An Inside Look at Palo Alto Networks Prisma Browser for Business (Sponsored)
A Mastercard survey reveals that 46% of small and medium businesses have experienced a cyberattack, and nearly 20% of those that suffered an attack were then forced to file for bankruptcy or close their business. Ethan and Drew along with guest Shivam Srivastava discuss a new offering from today’s sponsor, Palo Alto Networks: Prisma Browser... Read more »
Published: May 8, 2026Duration: 34m 46s
Episode 825
Faster Than Dijkstra? Exploring a New Shortest-Path Algorithm with Bruce Davie
Dijkstra’s algorithm is the foundation of shortest path calculations for link state routing protocols. But researchers have developed a new algorithm that improves on this decades-old approach. Today’s Heavy Networking welcomes Dr. Bruce Davie to discuss the potential of this new algorithm to unseat Dijkstra. After thoughtful consideration, and consultation with others, his opinion is... Read more »
Published: May 1, 2026Duration: 54m 43s
Episode 824
That’s Not a Job for an LLM: The Right Way to Apply AI to Network Operations (Sponsored)
On today’s sponsored Heavy Networking, we get off the AI hype train to talk about how different artificial intelligence techniques usefully impact network operations—and where they aren’t a fit. The various forms of AI represent a set of tools that, like any tool, have use cases, capabilities, and limitations. Our guest is Avi Freedman, CEO... Read more »
Published: Apr 24, 2026Duration: 1h 1m 11s
Episode 823
Defining A Modern Network Service
On today’s episode Ethan is joined by Mark Prosser, a self-described Network Operator Advocate and Network Automation Dreamer, to embark on a thought exercise about network services. Together they grapple with questions such as: What is a network service, exactly? How is it defined? Is it even possible to define it when considered in the... Read more »
Published: Apr 17, 2026Duration: 51m 10s
Episode 822
Now I Understand. You Mean an AI-Safe Zero-Trust Network Automation Approach. (Sponsored)
On today’s sponsored episode we talk with David Gee, CEO at Curvium, a systems integrator and VAR. David holds thoughtful opinions about network automation and orchestration, how such platforms are to be built, and the impact AI is having on network automation. We dig into how AI fundamentally changes how we interact with systems, and... Read more »
Published: Apr 10, 2026Duration: 1h 12m 8s
Episode 821
Boring Network Design Is Good
Ethan Banks sits down with Ryan Hamel at the 96th North American Network Operators’ Group (NANOG96). Ryan, a network automation developer for the Zayo Group, talks about why boring network design is actually a good thing. He and Ethan explore why simplicity and standardization are key to long-term success. They also emphasize the importance of... Read more »
Published: Apr 3, 2026Duration: 55m 52s
Episode 820
Cyber Week 2026 Wrap Up with Palo Alto Networks: Agents, Prisma AIRS and NGTS (Sponsored)
Palo Alto Networks released a slew of product news at the 2026 RSA conference around AI security, SASE, and a new certificate lifecycle management offering. On today’s Heavy Networking, sponsored by Palo Alto Networks, Ethan and Drew dig into these announcements to get details about how they work. They also talk about the risks of... Read more »
Published: Mar 27, 2026Duration: 38m 53s
Episode 819
Recipes for Automation - A Look Inside Eric Chou's AI Networking Cookbook
Eric Chou, author of the AI Networking Cookbook and host of Network Automation Nerds, joins Ethan and Drew to discuss adding artificial intelligence to your network automation toolbox. The AI Networking Cookbook is aimed at network engineers and provides a systematic approach to learning AI for network automation. Together they break down pros and cons... Read more »
Published: Mar 20, 2026Duration: 1h 1m 49s
Episode 818
Introducing LIM: A Large Infrastructure Model for Multi-Cloud Terraform Migration (Sponsored)
One of the early promises of public cloud was that, in theory, you could move workloads from Cloud Provider A to Cloud Provider B for any number of reasons: lower costs, new capabilities, better uptime, and so on. In practice, once a workload goes into a public cloud and you build out all the other... Read more »
Published: Mar 13, 2026Duration: 58m 35s
Episode 817
Is There a Better Way to Do Software Defined Networking?
Software Defined Networking (SDN) is a centralized architecture in which a controller, or a hierarchy of controllers, runs software that computes network-engineered paths and pushes that forwarding scheme into the network. It’s also very complex, which can lead to network failures. What if there was a way to keep the benefits of SDN while also... Read more »
Published: Mar 6, 2026Duration: 57m 29s
Episode 816
Inside the Case: A Hardware Deep Dive with Meter (Sponsored)
Our topic today is the designing and building of high-performance networking hardware. If you assume the hardware details don’t matter, you’re missing the intentional engineering required to build truly reliable and quiet infrastructure. In this sponsored episode, we discuss Meter’s hardware philosophy with our guest, Joshua Markell, Head of Hardware at Meter. Joshua walks us... Read more »
Published: Feb 27, 2026Duration: 58m 57s
Episode 815
All About PCE
Traditional routing protocols like OSPF simply choose the “shortest” path. If the shortest path is full of traffic and there are alternate paths carrying nothing, OSPF can’t help you. Path Computation Element (PCE) along with Path Computation Element Protocol (PCEP) is a way to construct forwarding paths through the network based on factors that distributed... Read more »
Published: Feb 20, 2026Duration: 1h 14m 10s
Episode 814
Automating Your Network with Cisco Crosswork Workflow Manager (Sponsored)
Our topic today is building and running network workflows. If your network workflows live in a spreadsheet, a SharePoint document, or in your head, you really need a workflow manager. A workflow manager brings scalability, repeatability, and consistency to your network operations team. In this sponsored episode, we discuss Cisco Crosswork Workflow Manager. Our guests... Read more »
Published: Feb 13, 2026Duration: 48m 15s
Episode 813
What Should Networkers Know About Software Development (and Vice Versa)?
What should network engineers know about software development? What should software developers know about networking? Ethan and Drew sit down with Chris Rapier and Nick Buraglio to discuss why crossing these silos can improve outcomes for everyone. They break down why being a little curious about the infrastructure can help software developers write better code,... Read more »
Published: Feb 6, 2026Duration: 57m 33s
Episode 812
Nokia EDA: AI Ops You Can Trust (Sponsored)
AI is everywhere in networking right now, but most of it feels like hype. In this sponsored episode, we go deeper than buzzwords with Steven Butler from Nokia to explore what it takes to make AI Ops real, reliable, and trustworthy in production environments. If you want AI to deliver value, you need the fundamentals... Read more »
Published: Jan 30, 2026Duration: 51m 1s
Episode 811
What AI Startups Get Wrong
What is the real-world impact of AI on network operations? Drew and Ethan have a chat with Carlos Pignataro, Founder & Principal at Blue Fern Consulting, to cut through the AI hype machine. Carlos offers a thoughtful, balanced take on where the industry is headed, and where it’s missing the mark. Together they discuss Intent-Based... Read more »
Published: Jan 23, 2026Duration: 57m 3s
Episode 810
AI in Network Operations: Pragmatism Over Hype (Sponsored)
Are you an AI skeptic or an enthusiast? Ethan and Drew sit down with Igor Tarasenko, Senior Director of Product Software Architecture and Engineering at Equinix, to break down the reality of AI in the network. In this sponsored episode, Tarasenko discusses why APIs are the new CLI, the critical need for observability in AI,... Read more »
Published: Jan 16, 2026Duration: 59m 37s
Episode 809
EVPN All the Things!
It’s been over a decade since the first Packet Pushers podcast on EVPN. Now, guest Jeff McAdams can legitimately suggest that we “EVPN all the things.” Hosts Ethan Banks and Drew Conry-Murray dig into Jeff’s stance on EVPN/VXLAN. They look at how VXLAN and EVPN work; talk about use cases in the data center, the... Read more »
Published: Jan 9, 2026Duration: 1h 8m 39s
Episode 808
Is IT a Young Person’s Game?
Is the ideal IT employee just leaving college or a veteran with years of experience? Russ White joins Ethan Banks and Drew Conry-Murray to discuss the complexities of this question. Younger professionals just out of college are more willing to work longer hours or unpopular shifts, learn new tools and skills, and take risks. Older... Read more »
Published: Dec 12, 2025Duration: 50m 46s