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

Fexingo

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. #InternetInfrastructure #NetworkEngineering #BGP #InternetExchange #Peering #CDN #DDoS #NetworkNeutrality #DataCenters #UnderseaCables #IPAddressing #ISP #FiberNetworks #Latency #NANOG #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

  1. 59m ago

    How Intent-Based Networking Automates Network Operations

    In this episode of Networking Tech with Fexingo, Lucas and Luna dive into intent-based networking (IBN) — a paradigm shift where network operators declare what they want the network to do, and software translates that intent into configuration, deployment, and continuous verification. They explore a concrete example: how a large financial services firm, JPMorgan Chase, has been using Cisco's IBN platform to reduce provisioning time for new trading floor circuits from weeks to hours. The discussion covers the core components of IBN — translation, validation, automation, and assurance — and contrasts it with traditional CLI-driven or scripted approaches. Lucas explains how the system continuously monitors for drift and automatically corrects deviations from the declared intent, using closed-loop feedback. They also touch on challenges: the cultural resistance from engineers who trust the CLI, the upfront modeling effort, and the vendor lock-in risk. The episode wraps with a reflection on whether IBN truly delivers on its promise of error-free, agile networks, and what operators should consider before adopting it. #IntentBasedNetworking #IBN #NetworkAutomation #JPMorganChase #Cisco #NetworkOrchestration #ClosedLoopAutomation #NetworkAssurance #CLItoIntent #NetworkEngineering #Tech #FexingoBusiness #BusinessPodcast #NetworkingTech #NetworkOperations #DevOpsNetworking #InfrastructureAsCode #DigitalTransformation Keep every episode free: buymeacoffee.com/fexingo

    12 min

  2. 12h ago

    How Network Slicing Creates Private Networks on Shared Fiber

    Episode 56 of Networking Tech with Fexingo dives into network slicing, the technology that carves virtual private networks out of a single physical infrastructure. Hosts Lucas and Luna explore how Ericsson and Deutsche Telekom deployed a slice for a factory automation use case in 2025, achieving 99.9999% reliability on a shared 5G transport network. They break down how slicing works at the routing layer using segment routing and network function virtualization, why it matters for industrial IoT and autonomous vehicles, and the tension between carriers who want to offer slices as services and regulators who worry about net neutrality. Lucas explains the difference between a slice and a VPN, and why the transport network is the hardest part to guarantee. No buzzwords, just a clear look at how one network can become many. #NetworkSlicing #5G #SegmentRouting #Ericsson #DeutscheTelekom #PrivateNetworks #IndustrialIoT #NetworkFunctionVirtualization #ServiceLevelAgreement #NetNeutrality #TransportNetwork #FactoryAutomation #AutonomousVehicles #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech Keep every episode free: buymeacoffee.com/fexingo

    12 min

  3. 1d ago

    How Segment Routing Simplifies Wide Area Networks

    Lucas and Luna unpack Segment Routing (SR-MPLS), the technology that lets network operators define explicit paths through a wide area network without maintaining per-flow state on intermediate routers. They walk through the classic problem — traffic engineering on large MPLS networks requires hundreds of label-switched paths and constant signalling — and show how SR replaces that with a single source-routed instruction list carried in the packet header. Along the way they discuss real-world deployment at a Tier 1 European service provider that cut its LSP count by 94 percent, and examine how SRv6 extends the same idea into IPv6 for cloud and 5G backhaul. They also touch on the operational shift: operators move from troubleshooting per-tunnel state to designing segment lists, which changes the skill set required in the NOC. Episode 55 of Networking Tech with Fexingo. #SegmentRouting #SRMPLS #SRv6 #NetworkEngineering #Routing #MPLS #TrafficEngineering #WideAreaNetworks #ServiceProvider #IPv6 #NetworkAutomation #Cisco #Juniper #5GBackhaul #NetworkArchitecture #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

    10 min

  4. 1d ago

    How Network Configuration as Code Prevents Outages

    In this episode of Networking Tech with Fexingo, Lucas and Luna dive into the emerging practice of Network Configuration as Code (NCaC). They explore how treating network configurations like software code — with version control, automated testing, and CI/CD pipelines — can eliminate configuration drift and reduce human error. The hosts break down a real-world example: a 2025 outage at a major cloud provider caused by a missing VLAN tag in a YAML file, which could have been caught with a simple syntax check. They discuss the role of tools like Ansible, Terraform, and Batfish in validating configurations before deployment, and why traditional CLI-driven changes are becoming too risky for modern networks. The episode also touches on the cultural shift required for networking teams to adopt software engineering practices. By the end, listeners will understand how NCaC brings reliability and auditability to network operations, and why it's becoming essential for any organization running complex infrastructure. #NetworkConfigurationAsCode #NetworkAutomation #NetworkEngineering #InfrastructureAsCode #DevOpsForNetworks #CLIIsDead #YAML #Ansible #Terraform #Batfish #ConfigurationDrift #GitForNetworks #CI_CD #OutagePrevention #TechPodcast #FexingoBusiness #BusinessPodcast #Technology Keep every episode free: buymeacoffee.com/fexingo

    9 min

  5. 2d ago

    How Disaggregated Routing Is Unlocking Vendor-Neutral Networks

    Episode 53 of Networking Tech with Fexingo dives into the shift from monolithic routers to disaggregated, white-box hardware running open-source network operating systems. Lucas and Luna explore how software like SONiC and FRRouting separates control and forwarding planes, enabling operators to mix and match hardware from different vendors. They examine real-world adoption at major hyperscalers, the role of the Open Compute Project, and how this trend is lowering costs and accelerating innovation. The hosts also discuss the trade-offs: operational complexity, the need for in-house engineering, and why traditional vendors like Cisco and Juniper are pivoting. A must-listen for network engineers evaluating next-gen architectures. #DisaggregatedRouting #WhiteBoxNetworking #SONiC #FRRouting #OpenComputeProject #NetworkOperatingSystem #VendorNeutral #Hyperscaler #DataCenterNetworking #RoutingProtocols #BGP #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech #Podcast #TechTrends Keep every episode free: buymeacoffee.com/fexingo

    10 min

  6. 2d ago

    How BGP Hijacks Still Threaten the Internet in 2026

    In June 2026, Border Gateway Protocol remains one of the internet's weakest links. Lucas and Luna examine the mechanics of BGP hijacks—how a single misconfigured router can reroute global traffic—using the 2024 X/Twitter hijack incident as a case study. They explore why RPKI adoption has stalled at 45 percent, the role of MANRS in improving routing hygiene, and what network engineers can do today to protect their prefixes. Specific numbers, real incidents, and a clear call to action for operators. No fluff. #BGP #RoutingSecurity #BogonHijack #RPKI #MANRS #InternetInfrastructure #NetworkEngineering #IXP #AutonomousSystems #XTwitterIncident #RouteLeak #PrefixFiltering #IRR #ResourcePublicKeyInfrastructure #BorderGatewayProtocol #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

    7 min

  7. 3d ago

    How Edge Computing Is Rewriting Routing Rules at the Network Edge

    The cloud is moving closer to users — and that breaks decades of routing assumptions. In this episode, Lucas and Luna examine how edge computing forces a fundamental rethink of network topology, using a concrete case: a regional retail chain deploying real-time inventory analytics at 50 local stores, routing traffic to local nodes instead of a central data center. They walk through the shift from hub-and-spoke to mesh routing, the role of DNS-based steering, and why BGP at the edge behaves very differently than in the core. No hype — just the engineering reality of delivering sub-ten-millisecond latency when the data center is a closet at your strip mall. Includes a natural listener-support moment early on. #EdgeComputing #NetworkRouting #BGP #LowLatency #DistributedArchitecture #RetailTech #RealTimeAnalytics #DNS #MeshTopology #HubAndSpoke #LocalProcessing #SubTenMillisecond #NetworkEngineering #CloudEdge #DataCenter #FexingoBusiness #TechnologyPodcast #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

    10 min

  8. 3d ago

    How MPLS-TP Brings Carrier-Grade Reliability to Packet Networks

    In Episode 50 of Networking Tech with Fexingo, Lucas and Luna dive into MPLS Transport Profile (MPLS-TP), a technology that blends the predictability of circuit-switched transport with the efficiency of MPLS packet switching. They explore why telecom carriers and utilities still demand deterministic network behavior—using a concrete example of how a regional power grid operator uses MPLS-TP to guarantee sub-50-millisecond failover for SCADA traffic. Lucas explains how MPLS-TP eliminates IP routing's unpredictability by using static LSPs and OAM mechanisms borrowed from SONET/SDH, while Luna questions whether the trade-off in flexibility is worth it in an era of software-defined networking. The conversation covers real-world deployment challenges, including the 2018 FCC ruling on packet timing precision, and contrasts MPLS-TP with newer alternatives like Segment Routing. A must-listen for network engineers evaluating transport technologies for mission-critical infrastructure. #MPLS-TP #TransportNetworks #CarrierNetworking #SCADA #Sub50msFailover #PacketNetworks #CircuitSwitching #SONET #SDH #OAM #NetworkReliability #SCADASecurity #FCC #TimingPrecision #SegmentRouting #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

    14 min
See All (57)

About

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. #InternetInfrastructure #NetworkEngineering #BGP #InternetExchange #Peering #CDN #DDoS #NetworkNeutrality #DataCenters #UnderseaCables #IPAddressing #ISP #FiberNetworks #Latency #NANOG #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

Information