Episodes
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Welcome to the second part of our interview with friend of the podcast, Russ White. We start our conversation with a listener question about VXLAN/EVPN which acts as a springboard for what Russ really thinks about network engineering these days. He defends network snowflakes, championing their power in business use cases. He questions the merit... Read more »
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We turn the nerd meter up to eleven on todayâs episode with longtime friend of the show, Russ White. First we dive into how an Ethernet adapter knows when a link is lost, where Russ teaches us all about loss of carrier and OAM. He also gives us a tutorial on how the rest of... Read more »
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Missing episodes?
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The future has arrived: 800 gig Ethernet is here. Amit Bhardwaj and Dmitry Shokarev from todayâs sponsor, Juniper Networks, join the show to tell us all about Juniperâs 800 gig Ethernet and what we need to know as engineers: use cases, transition plans, fiber and power needs (a lot less than youâd think). We also... Read more »
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What if instead of sending multiple queries out to APIs and getting disparate data back, you could just send a single query and receive a single answer. Thatâs exactly what GraphQL does for you. Rick Donato joins the show today to teach us about GraphQL and how it can help us on the path to... Read more »
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If you havenât made the leap from traditional wide area networking to SD-WAN, or perhaps youâre thinking about adding security services to your SD-WAN infrastructure, this episode is for you. Rajesh Kari from Palo Alto Networks joins the show to share customer stories from the front lines of multi-branch businessesâ networks. Industry verticals including retail,... Read more »
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With âThe Cathedral and the Bazaarâ as his guide, Srivats launched Ostinato, his open source project, in 2010. He needed an affordable network traffic generator at his day job, he was passionate enough to build one during his nights and weekends, and end users loved itâ it has been downloaded hundreds of thousands of times.... Read more »
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To run AI workloads, a network needs thousands of GPUs and those GPUs must operate in sync. If there is congestion or dropped frames, very expensive efforts could be delayed or disrupted. While there are advantages to using Ethernet for AI networking (including engineers well-trained in the protocol and a robust ecosystem), it wasnât designed... Read more »
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Where there are containers, there is networking. Today we dig into the networking that underlies Kubernetes, the open source orchestration platform for container-based applications. Our guest Karim El Jamali takes us through the essential concepts: Nodes, pods, clusters, CNIs, virtual ethernet pairs, ingress controller, eBPF, and service meshes. As container-based applications grow in popularity, itâs... Read more »
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Fiserv is one of the largest payment processors in the world, In 2023 it handled more than 35 billion transactions worth $2.03 trillion US dollars. Its network is critical to the business. The organization knew it needed network automation, but early attempts got some things wrong. On todayâs Heavy Networking we talk about how Fiserv... Read more »
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Matt Horn built a data center network through automation, remotely. This is the future of network engineering. Matt shares how his team did it technically: Terraform, a little Ansible, leveraging pipelines, etc. But he also shares the processes and culture that made it happen: Management and peer buy-in, tight enforcement based on user access, and... Read more »
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Today we metaphorically pop open the hood of switches and routers, taking a look at the mechanics of how they work. We cover the three states: configuration, operational, and forwarding. We talk RIB and FIB, along with CAM, TCAM, and MPLS. We also cover line rate, port-to-port latency, and buffers. Whether itâs been awhile since... Read more »
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Right now, we have the building blocks for network automation, but we donât have end-to-end designs or complete systems. Itâs like having a bunch of Legos but no instructions for how to build your spaceship. Ryan Shaw, David Sinn, and their colleagues in the Network Automation Forum are tackling this problem. Their goal is to... Read more »
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One dark day, Ivan Pepelnjak stopped labbing. He just couldnât make himself yet again go through assigning addresses, building links, putting devices in place, setting up OSPF, BGP, VXLAN, EVPN, etc. before even being able to start whatever simulation or test he wanted to do. But from that darkness arose netlab. Ivan created netlab to... Read more »
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The days of network cowboy heroism are over⊠or at least they need to be. Itâs time for network engineering to grow up and standardize how networks are built. Not only will this make life easier for all of us as we inherit networks when we move from company to company, but itâs the only... Read more »
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Yaleâs efforts to load-balance RADIUS servers is a case study in system design for resiliency. First, there was a lone, redundant PSN. Next, F5s load balancers entered the picture. Then the network team realized a feature in IOS-XE was the answer⊠and brought Cisco along the learning journey with them. Hear it all from the... Read more »
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Guest Dinesh Dutt introduces his newest creation, SuzieQ. Itâs a network observability platform application that has both a free, open source version and an enterprise version. Lightweight, fast, and platform-agnostic, SuzieQâs use cases include network documentation, troubleshooting, fabric-wide visibility, network refresh and redesign, low/no code validation, audits and compliance, and proactive health checks. Hosts Ethan... Read more »
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Remote and hybrid work means network engineers have to grapple with lossy residential networks such as home wireless that your work-from-home folks are using to access company resources. Their Wi-Fi sucks, and so their use of corporate resources sucks. Sure, youâve got them plumbed into a SASE fabric, but that doesnât fix their user experience... Read more »
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On todayâs episode, we discuss networking sources of truth. Thatâs right, sources of truth, because youâre likely to have more than one depending on your environment and your point of view. On LinkedIn, Ethan Banks quoted someone at the AutoCon0 conference who essentially said that the network itself shouldnât be used as a source of... Read more »
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At AutoCon0 in November 2023, guest Jeremy Schulman delivered a talk from the main stage about delivering network assurance. If the term ânetwork assuranceâ doesnât mean anything to you, think about how you prove after an install or a change that the network is doing what itâs supposed to be doing. If youâre doing it... Read more »
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At NewYork-Presbyterian Hospital, patients are the priority. That focus on patient care extends to the hospital’s campus network, data center, wireless network, and SD-WAN. These networks are instrumental for delivering medical applications and connecting medical devices. On today’s Heavy Networking, we talk with network architects and engineers at NewYork-Presbyterian about their use of automation to... Read more »
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