Networking Tech with Fexingo: Internet Infrastructure, Routing, and Network Engineering

Networking Tech with Fexingo: Internet Infrastructure, Routing, and Network Engineering

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Networking Tech with Fexingo: Internet Infrastructure, Routing, and Network Engineering episodes

  • How LEO Satellites Are Reshaping Internet Backbone Routing

    Lucas and Luna dive into the engineering behind Low Earth Orbit satellite constellations and how they're changing internet backbone routing. They explain why Starlink's mesh network of thousands of satellites requires a new routing protocol called 'BGP in space,' how laser crosslinks between satellites reduce latency compared to fiber, and the challenge of handing off connections as satellites move at 17,000 miles per hour. They also discuss what this means for traditional undersea cable routes and the future of latency-sensitive applications like high-frequency trading.

    #LEOSatellites #Starlink #InternetBackbone #SatelliteRouting #BGP #BGPinSpace #LaserCrosslinks #Latency #UnderseaCables #HighFrequencyTrading #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #SpaceInternet #RoutingProtocol #MeshNetwork #LowEarthOrbit

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    12 min
  • How Zero Trust Security Is Reshaping Network Architecture

    In this episode of Networking Tech with Fexingo, Lucas and Luna explore the shift from perimeter-based security to Zero Trust Network Access (ZTNA). They break down the core principle - 'never trust, always verify' - and how it's being implemented in modern networks using microsegmentation, identity-aware proxies, and continuous endpoint verification. The hosts discuss real-world examples like Google's BeyondCorp and the challenges of retrofitting legacy infrastructure. They also examine how Zero Trust changes the daily work of network engineers, shifting their focus from firewall rules to policy-as-code and automated threat response. A concrete, forward-looking conversation for anyone building or managing network infrastructure today.

    #ZeroTrust #NetworkSecurity #ZTNA #BeyondCorp #Microsegmentation #PolicyAsCode #IdentityAwareProxy #NetworkArchitecture #CyberSecurity #NetworkEngineering #GoogleBeyondCorp #ContinuousVerification #LeastPrivilege #NetworkAutomation #Tech #FexingoBusiness #BusinessPodcast #NetworkingTech

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    11 min
  • How Network Automation Is Reshaping the Daily Work of Network Engineers

    In this milestone 100th episode of Networking Tech with Fexingo, Lucas and Luna explore a topic that hits close to home for every network engineer: how automation is fundamentally changing the job itself. They walk through a concrete example—a mid-sized enterprise that replaced manual switch configuration with Ansible playbooks, cutting deployment time from 8 hours to 18 minutes. They discuss what gets automated versus what still requires human judgment, why the role is becoming more about software engineering than cable management, and how earning a CCNP or JNCIP is now table stakes for entry-level roles. Lucas shares a recent survey from the Network Automation Forum showing that 68 percent of network teams now use infrastructure-as-code tools, up from 22 percent just four years ago. Luna pushes back on the idea that automation kills jobs, arguing it frees engineers to focus on architecture and security. The episode closes with a candid look at how listener support via buy me a coffee dot com slash fexingo keeps the show ad-free and sustainable.

    #NetworkAutomation #InfrastructureAsCode #Ansible #NetworkEngineering #CareerChange #CCNP #JNCIP #DevOps #Python #NetOps #Automation #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech #Episode100 #ListenerSupported #BuyMeACoffee

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    9 min
  • How Network Verification Prevents Outages Before They Happen

    Episode 99 of Networking Tech with Fexingo dives into network verification — the practice of mathematically proving that network configurations satisfy policy before deployment. Lucas and Luna explore how tools like formal verification and model checking catch subtle bugs that slip past human review, using a real outage case: a misconfigured ACL that brought down a major bank's trading floor for hours. They explain how Amazon, Microsoft, and Google use verification at scale, and contrast it with traditional testing. The episode also covers the rise of open-source tools like Batfish and the role of continuous verification in CI/CD pipelines. If you design, operate, or rely on networks, this episode offers a concrete look at a shift from reactive troubleshooting to proactive correctness.

    #NetworkVerification #FormalVerification #ConfigurationManagement #NetworkReliability #Batfish #ModelChecking #ACL #NetworkPolicy #CI/CD #Amazon #Microsoft #Google #Technology #NetworkEngineering #SRE #FexingoBusiness #BusinessPodcast #Infrastructure

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    9 min
  • How RDMA Is Reshaping Data Center Network Performance

    In this episode of Networking Tech with Fexingo, Lucas and Luna explore how Remote Direct Memory Access (RDMA) is transforming data center networking by allowing servers to exchange data directly without CPU intervention. They break down how RDMA bypasses traditional kernel overhead, reducing latency to single-digit microseconds and cutting CPU load by over 90 percent. Using examples from hyperscale cloud providers and high-frequency trading networks, they explain why RDMA over Converged Ethernet (RoCE) is gaining traction, despite its reliance on lossless network fabrics. They also discuss the challenges of deploying RDMA at scale, including flow control, congestion management, and the need for precise PTP timing. If you work with high-performance computing, storage clusters, or latency-sensitive applications, this episode delivers actionable insight into a technology that is quietly reshaping the backbone of modern data centers.

    #RDMA #RemoteDirectMemoryAccess #DataCenterNetworking #RoCE #RDMAOverConvergedEthernet #InfiniBand #LowLatencyNetworking #HighPerformanceComputing #StorageNetworking #NVMeOverFabrics #LosslessEthernet #PriorityFlowControl #ExplicitCongestionNotification #PTP #PrecisionTimeProtocol #NetworkEngineering #Technology #FexingoBusiness

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    11 min
  • How Ethernet VPN Is Reshaping Data Center Networks

    In this episode of Networking Tech with Fexingo, Lucas and Luna dive into Ethernet VPN (EVPN) and how it is fundamentally changing data center network design. They explain why traditional VLAN-based architectures are struggling with modern scale and mobility, and how EVPN uses BGP-based control planes to provide Layer 2 and Layer 3 connectivity across fabric. The hosts walk through a real example of a large cloud provider migrating from spanning tree to an EVPN-VXLAN fabric, highlighting the operational benefits like automated multi-tenancy, load balancing across equal-cost paths, and faster failure convergence. They also discuss common deployment models and what to consider when planning an EVPN migration. This episode offers concrete insights for network engineers and IT leaders looking to modernize their data center networks.

    #EthernetVPN #EVPN #DataCenterNetworking #VXLAN #BGP #NetworkFabric #NetworkEngineering #Technology #Podcast #FexingoBusiness #BusinessPodcast #NetworkAutomation #Layer2 #Layer3 #MultiTenancy #SpineLeaf #NetworkSegmentation #CloudNetworking

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    11 min
  • How Wireless ISPs Deliver Fiber-Speed Internet Over the Air

    Episode 96 of Networking Tech with Fexingo explores how fixed wireless access (FWA) is bridging the digital divide. Lucas and Luna break down the technology behind millimeter-wave spectrum, beamforming, and the economics of deploying WISPs in rural and suburban areas. They discuss real-world case studies from companies like Starry and Common Networks, and explain why FWA is becoming a viable alternative to fiber, especially in regions where trenching fiber is cost-prohibitive. The episode also covers challenges like line-of-sight, spectrum licensing, and the impact of CBRS on small ISP operations. If you've ever wondered how your internet gets to you without wires, this episode gives you the concrete details.

    #FixedWirelessAccess #WISP #MillimeterWave #Beamforming #Starry #CommonNetworks #CBRS #RuralBroadband #DigitalDivide #LastMileConnectivity #SpectrumLicensing #5G #NetworkInfrastructure #Technology #FexingoBusiness #BusinessPodcast #TechPodcast #NetworkingTech

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    9 min
  • How Optical Transport Networks Handle 400 Gigabit Internet Backbone

    Episode 95 of Networking Tech with Fexingo dives into the engineering behind 400 Gigabit optical transport networks. Lucas and Luna explain how coherent optics, advanced modulation formats like 64QAM, and wavelength division multiplexing push single-fiber capacities past 30 terabits per second. They trace the evolution from 10G to 400G, discuss the role of the OIF 400ZR standard in hyperscaler data center interconnects, and examine real-world deployment challenges like chromatic dispersion and amplifier noise. The episode also covers how network operators are future-proofing for 800G and 1.6T using silicon photonics and machine learning-based link optimization. Perfect for network engineers, telecom professionals, and anyone curious about the physical layer that powers the global internet.

    #OpticalTransport #400Gigabit #CoherentOptics #DWDM #400ZR #NetworkEngineering #InternetBackbone #SiliconPhotonics #FiberOptics #DataCenterInterconnect #OIF #ModulationFormats #NetworkInfrastructure #TechPodcast #FexingoBusiness #BusinessPodcast #NetworkingTech #FutureOfNetworking

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    11 min
  • How Network Observability Data Lakes Are Replacing Legacy Monitoring

    Lucas and Luna explore how network observability data lakes are transforming the way engineers store and analyze telemetry data. They discuss the limitations of traditional monitoring databases, the role of open-source columnar stores like Apache Parquet and ClickHouse, and how companies like Netflix and Cloudflare have reduced query times from minutes to milliseconds. The episode also covers schema-on-read vs schema-on-write, the cost savings of tiered storage, and why the network engineering community is moving toward unified observability pipelines. If today's conversation gave you something usable, find the show at buy me a coffee dot com slash fexingo.

    #NetworkObservability #DataLakes #TelemetryData #ApacheParquet #ClickHouse #Netflix #Cloudflare #NetworkEngineering #Monitoring #ObservabilityPipelines #SchemaOnRead #ColumnarStorage #TechPodcast #FexingoBusiness #BusinessPodcast #Infrastructure #DataEngineering #NetworkInfrastructure

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    9 min
  • How Network Backbone Peering Shapes the Internet

    Episode 93 of Networking Tech with Fexingo dives into the hidden world of peering — the agreements that connect networks and determine how your data travels. Lucas explains the difference between public peering at Internet exchanges and private peering between large providers, using the 2021 Facebook outage as a case study to show what happens when peering breaks. He walks through the economics: settlement-free vs. paid peering, and how Netflix's Open Connect Appliances shifted the balance of power with ISPs. Luna questions whether regulation is needed as consolidation reduces peering options, and they discuss the rise of peering portals that automate negotiation. The episode grounds abstract concepts in a real failure that affected billions of users.

    #Peering #InternetExchange #BGP #Netflix #OpenConnect #FacebookOutage #ISP #NetworkInfrastructure #InternetBackbone #SettlementFree #PaidPeering #IXP #ContentDelivery #NetNeutrality #Technology #Podcast #FexingoBusiness #BusinessPodcast

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    14 min

About Networking Tech with Fexingo: Internet Infrastructure, Routing, and Network Engineering

From the publisher's feed

Lucas and Luna break down the invisible skeleton of the internet: the routers, protocols, and physical cables that move packets across continents. Each episode opens with a recent network outage, a peering dispute, or a routing-table anomaly — then traces the engineering decisions and business incentives behind it. Lucas maps the technical architecture (BGP, MPLS, IXPs), while Luna pushes on the economics: who pays for undersea cables, why ISPs throttle certain traffic, and how network neutrality shapes startup access. They analyze real incidents — AWS’s Tokyo region failure, a Level 3 vs. Cogent peering war, or the latency impact of a new data-center route — and explain what network engineers actually debate in NANOG meetings. This is not a ‘how the internet works’ primer; it’s the layer-3 view for professionals who manage, build, or invest in network infrastructure. Expect granular discussions of dark fiber, CDN caching strategies, and the politics of IP address allocation. By the end, you’ll see the internet as a finite, fragile, and fiercely competitive topology — and understand why a single undersea cable cut can reset stock prices.