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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.
592 Episodes
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Monitoring and troubleshooting latency can be tricky. If it’s in the network, was it the IP stack? A NIC? A switch buffer? A middlebox somewhere on the WAN? If it’s the application, can you, the network engineer, bring receipts to the app team? And what if you need to build and operate a network that’s... Read more »
How might we get network traffic from Earth to a lunar base? Or Mars? Or to spaceships carrying astronauts or probes exploring space? And how do we get it back? The problem, among other things, is latency. The answer isn’t TCP/IP. The answer is…complicated. On today’s Heavy Networking we explore the challenges of getting packets... Read more »
1Today’s episode is all about high-performance memory in switches. We dig into the differences among TCAM, SRAM, DRAM, and HBM, and all the complex tradeoffs that go into allocating memory resources to networking functions. If you’ve ever had to select a Switching Database Manager template or done similar operations on a switch, this is your... Read more »
LLMs and AI-powered chatbots are becoming a regular feature of network operations tools and vendor product portfolios. Now the next iteration of AI in network ops and automation is likely to be agentic. On today’s Heavy Networking, sponsored by HPE Juniper Networking, we talk about what agentic AI actually means, how AI agents will accomplish... Read more »
Perhaps the biggest question around adopting network automation is whether you should build a solution using open source tools and a lot of coding glue, or buy a network automation platform from a vendor and construct your automation solution on top of that. Either way has tradeoffs. Network engineer Lee Harper joins Heavy Networking to... Read more »
On Heavy Networking today, AI operations for networking. That is, how do we delegate some amount of responsibility for network operations to artificial intelligence? Cisco is our sponsor, and our guests are Omar Sultan, Director for Product Management of Automation and AI; and Javier Antich, Chief Mad Scientist for AI (yes, that’s his title!). We talk... Read more »
Adyen is a global payments processor whose primary business is providing payment services for merchants, retailers, and venues, as well as online payments. On today’s Heavy Networking we talk about a firewall automation project the company has undertaken. With dozens of change requests coming in every day that need to touch network and host firewalls,... Read more »
We have a network automation discussion for you today from sponsor Megaport. At the AutoCon3 conference earlier this year, Luke Gollan presented on a complex network automation project migrating Megaport’s API-driven software defined network from a legacy VXC overlay to an EVPN framework. This helped improve scalability, but was fraught with practical challenges, not the... Read more »
SNMP is still widely used in today’s networks. But modern telemetry and network observability are bringing changes to network monitoring. Today’s Heavy Networking is a roundtable discussion about alternatives to SNMP and real-world use cases for those alternatives. This episode was inspired by a request from listener Nikolay. He says… While telemetry (gRPC, etc.) is... Read more »
Service provider networks face a couple of difficult challenges: how to map service level agreements to actual network health and performance, and how to deliver service assurance to customers regardless of what happens on the network. On today’s sponsored Heavy Networking we talk with Cisco Systems about its approach to service assurance, how Cisco is... Read more »
There’s an old saying that a journey of a thousand miles begins with the first step. On today’s show, we talk about taking your first step into network automation with guest Joseph Nicholson. He’s been automating at NTT Data for many years now and has some perspective to share. He’s a network engineer by trade,... Read more »
Network automation is today’s topic with sponsor Gluware. Gluware provides a network automation platform that targets both network engineers and automation builders. On today’s Heavy Networking, we discuss how Gluware supports these two constituencies. We also talk about a recent product announcement, Gluware Labs. Gluware Labs includes a free Community Edition of Gluware software you... Read more »
If you participate in the public Internet by announcing your own netblocks, you should be familiar with Internet Routing Registries (IRRs) and the Routing Policy Specification Language (RPSL). These are tools that help you be a good network citizen. In a world of BGP hijacks and other problems, these tools matter more than ever. We... Read more »
Netris is tackling the issue of automating multi-tenancy in an AI data center. Netris has your answer to this challenge, and it’s a solution certified to work with NVIDIA. We’re going to get into the nuts and bolts of Netris network automation with Alex Saroyan, CEO and co-founder of Netris. Along the way, we will... Read more »
While studying for the CCIE Service Provider certification, Andrew Ohanian assembled a workbook to help him prepare. It’s packed with lab exercises, and Andrew has turned it into a free Web resource that anyone can access. On today’s Heavy Networking, we talk with Andrew about what’s in the guide, the state of the CCIE SP,... Read more »
On today’s Heavy Networking we talk with Dan Wade about testing the network, inspired by Dan’s talk at AutoCon 2: “Step 0: Test the Network.” We discuss why testing is a good idea, and then explore four types of network testing, including unit tests and integration tests. We dig into Yang, RESTCONF, NETCONF and gNMI... Read more »
On today’s Heavy Networking, a roundtable panel considers whether a modern network needs to be built around underlays and overlays. This isn’t just Ethan yelling at clouds. This is a legitimate question pondering the real-world value of an overlay/underlay approach. Is overlay everywhere overkill, or is that the architecture we need to deliver a safe,... Read more »
Model Context Protocol (MCP) is a very new protocol that provides a standard way to link AI models to a variety of data sources and tools. As the industry heads toward agentic AI–in which an AI agent interacts with disparate applications, data sources, and other agents to achieve a task–MCP provides the protocol glue. On... Read more »
Today’s Heavy Networking is all about overlay technologies, their history, development, and current state, both from engineer and vendor perspectives. We discuss why the industry turns to overlays to solve problems, and look at overlay and segmentation approaches including VXLAN, SRv6, and EVPN. We also drill into the idea that EVPN could become the standard... Read more »
Network security has evolved from stateful perimeter firewalls with maybe some IDS/IPS to a complex stack delivered as numerous unique tools, which often don’t talk to one another and may need to be operated by specialists. In this environment it’s hard to unify a security policy, troubleshoot problems, manage and operate tools, and respond effectively... Read more »
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fantastic! thanks for this episode
In the context of heavy networking, especially when dealing with mobile-based redundancy or remote setups, it's important to understand which networks you're actually working with. I found this page useful: https://whatnetworksphilippines.com/0954-what-network/ — it breaks down the 0954-what-network prefix and which provider it belongs to in the Philippines. Knowing the network behind a prefix can help when configuring mobile failovers or optimizing traffic routes in regions with limited infrastructure. Just something to keep in mind when building out more resilient systems in diverse environments.
3/14 _ 15 min
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it was really amazing thank you guys🌹🌷✌
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j my v by PKI hunting m. olm MNM ) hook thumb P pop o Plot CBN n no oo9h PJ IK OK kolJ. poplin mp he they km h lollipop ObLp)
good episode, but too long...