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

Episode 72 of Networking Tech with Fexingo explores how low-earth-orbit satellite constellations like Starlink are forcing fundamental changes in Internet routing. With satellites moving at 7.5 km/s and handing off connections every few minutes, traditional BGP and TCP protocols break down. Lucas and Luna dive into the specific engineering challenges: laser crosslinks that create a mesh in orbit, the need for predictive routing algorithms, and how satellite gateways peer with terrestrial IXPs. They discuss the IETF's work on ‘delay-tolerant networking’ and how SpaceX's network now carries over 100 Gbps per satellite laser link. A concrete look at how the physical layer is rewriting routing tables from the sky down.

#SatelliteInternet #Starlink #Routing #BGP #LEOConstellation #NetworkEngineering #InternetInfrastructure #LaserCrosslinks #DelayTolerantNetworking #TCP #IETF #SpaceX #Technology #Podcast #FexingoBusiness #BusinessPodcast #NetworkingTech #OrbitRouting

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Lucas and Luna explore how private 5G networks are reshaping connectivity for large campuses, factories, and ports. They focus on a real-world implementation at the Port of Rotterdam, where a private 5G network from Ericsson and KPN supports autonomous cranes, drone inspections, and real-time logistics. The hosts break down why private 5G offers lower latency, higher reliability, and better security than Wi-Fi or public cellular, and how it compares to other private wireless technologies like CBRS and LoRaWAN. They discuss the role of network slicing, the cost of deployment (typically $500k to $2 million per site), and which industries are adopting it fastest. The episode includes a brief, natural donation segment tied to the value of in-depth tech explanations. A concrete example of a Dutch port gives listeners a tangible sense of what private 5G enables today.

#Private5G #5G #NetworkInfrastructure #PortOfRotterdam #Ericsson #KPN #CampusNetwork #IndustrialIoT #NetworkSlicing #CBRS #LoRaWAN #AutonomousCranes #SmartPort #Telecom #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast

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Episode 70 of Networking Tech with Fexingo explores network digital twins—virtual replicas of production networks used to simulate changes, test configurations, and predict failures before they impact users. Lucas and Luna break down how AT&T and Microsoft are deploying digital twins to reduce planned maintenance windows by 70 percent and prevent capacity-related outages. They walk through a concrete example: simulating a BGP policy change on a core router to see if it would create a routing loop. The hosts explain the key technologies—model-driven telemetry, graph databases, and real-time state synchronization—and why digital twins are becoming essential for any organization running complex, multi-vendor networks. They also discuss the limitations: fidelity gaps where the twin doesn't perfectly mirror the production device, and the compute cost of running high-fidelity simulations at scale. A practical, technical look at a technology that's quietly changing how network engineers plan their work.

#NetworkDigitalTwins #AT&T #Microsoft #BGP #ModelDrivenTelemetry #GraphDatabase #NetworkAutomation #NetworkObservability #PredictiveMaintenance #RoutingLoops #MultiVendorNetworks #NetworkSimulation #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #InternetInfrastructure #NetworkingTech

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Episode 69 of Networking Tech with Fexingo. Lucas and Luna explore how Smart NICs (network interface cards with onboard processors) are offloading packet processing from CPU cores, reducing latency and freeing up server resources for applications. They focus on the rise of NVIDIA's BlueField DPU, the impact on hyperscaler data centers like Microsoft Azure, and how Smart NICs enable software-defined storage and security at line rate. They also discuss the economics: a $500 Smart NIC vs. upgrading entire server fleets. This episode includes specific numbers on performance gains and adoption timelines, plus a look at how startups like Fungible (acquired by Microsoft) shaped the market. Perfect for network engineers, cloud architects, and anyone curious about the hardware making the internet faster.

#SmartNIC #DPU #NVIDIA #BlueField #NetworkOffload #DataCenter #MicrosoftAzure #Fungible #PacketProcessing #SoftwareDefinedStorage #NetworkSecurity #RDMA #NVMeOverFabrics #Hyperscaler #CloudComputing #Technology #FexingoBusiness #BusinessPodcast

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Episode 68 of Networking Tech with Fexingo dives into Time-Sensitive Networking (TSN), the IEEE standard bringing deterministic Ethernet to factories and autonomous systems. Lucas and Luna unpack a real deployment at a BMW plant in Dingolfing, Germany, where TSN slashed jitter from 500 microseconds to under 10 microseconds across welding robots. They explain how TSN's traffic shaping and gating mechanisms work, why it competes with legacy fieldbuses like PROFINET, and what it means for the convergence of IT and OT. If you work in network engineering or industrial automation, this episode gives you the concrete use case and technical detail you need.

#TimeSensitiveNetworking #IndustrialIoT #TSN #DeterministicNetworking #BMW #Dingolfing #IEEE8021 #Ethernet #Fieldbus #PROFINET #OTNetworking #ITOTConvergence #WeldingRobots #Jitter #FactoryAutomation #Technology #FexingoBusiness #BusinessPodcast

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Episode 67 of Networking Tech with Fexingo explores how network engineers are using SaltStack, an open-source automation framework originally designed for server configuration, to manage routers and switches. Lucas and Luna break down a real deployment at a mid-sized enterprise that cut device provisioning time from 45 minutes to under 3 minutes. They discuss the push-vs-pull model, how Salt's event-driven reactor automates responses to network failures, and why this approach is gaining traction over traditional Ansible-based automation. The hosts also touch on the cultural shift from CLI-driven workflows to infrastructure-as-code in networking teams. If you are a network engineer evaluating automation tools or just curious how modern networks are managed at scale, this episode gives you a concrete look at one rapidly adopted solution.

#NetworkAutomation #SaltStack #NetOps #InfrastructureAsCode #OpenSourceNetworking #NetworkEngineering #EventDrivenAutomation #ConfigurationManagement #ZeroTouchProvisioning #NetworkDevOps #Technology #FexingoBusiness #BusinessPodcast #Podcast #LucasAndLuna #DevOpsForNetworks #NetworkConfiguration #AutomationTools

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This episode of Networking Tech with Fexingo dives into eBPF (extended Berkeley Packet Filter), a technology that lets network engineers run sandboxed programs in the Linux kernel without changing kernel code or loading modules. Lucas and Luna explain how eBPF enables deep observability into network traffic, security events, and performance metrics with minimal overhead — used by companies like Netflix, Cilium, and Facebook for real-time packet filtering, load balancing, and troubleshooting. They walk through a concrete example: how a team can trace every TCP retransmission across a Kubernetes cluster without restarting a single pod. The hosts also discuss the shift from legacy monitoring tools like iptables to eBPF-powered solutions, and why this matters for modern cloud-native networks. If you've ever wondered how engineers see inside their network without adding latency, this episode is for you.

#eBPF #NetworkObservability #LinuxKernel #ExtendedBerkeleyPacketFilter #Cilium #CloudNative #KubernetesNetworking #PacketFiltering #TCPRetransmission #NetworkPerformance #Technology #Networking #FexingoBusiness #BusinessPodcast #Infrastructure #DevOps #SiteReliabilityEngineering #NetworkTracing

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In this episode, Lucas and Luna dive into Segment Routing over IPv6, or SRv6, a technology that is transforming how service providers and large enterprises design and operate wide area networks. They explain how SRv6 embeds a list of instructions directly into the IPv6 packet header, eliminating the need for complex MPLS labels and multiple protocols. The hosts walk through a real-world example from a major European telecom that reduced network configuration errors by 40% after migrating to SRv6. They also discuss the trade-offs, including the learning curve for network engineers and the processing overhead on older routers. By the end, you will understand why SRv6 is seen as the future of WAN routing and how it compares to traditional MPLS and earlier segment routing approaches.

#SegmentRouting #IPv6 #SRv6 #WAN #NetworkEngineering #MPLS #Routing #ServiceProvider #NetworkAutomation #Telecom #SDN #IPRouting #NetworkInfrastructure #FexingoBusiness #BusinessPodcast #Technology #Podcast #Networking

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DNS-over-HTTPS, or DoH, encrypts DNS queries to prevent eavesdropping and manipulation. But it also shifts DNS resolution from the network to the client, breaking traditional security monitoring. Lucas and Luna explore how DoH works, why browsers like Chrome and Firefox adopted it, and what it means for network engineers trying to enforce filtering or detect malware. They focus on the real-world tension between user privacy and enterprise visibility, using examples like Cisco Umbrella and Cloudflare's 1.1.1.1. With over 30% of DNS queries now encrypted, DoH is reshaping network design. The hosts discuss how to adapt: using DNS-over-TLS on the network edge, enabling policy-based DoH, and monitoring encrypted traffic via ECH. This episode gives network engineers a practical framework for navigating the DoH landscape in 2026.

#DNSOverHTTPS #DNSSEC #EncryptedDNS #NetworkSecurity #Privacy #Cloudflare #CiscoUmbrella #EncryptedClientHello #TechPodcast #InternetInfrastructure #Routing #NetworkEngineering #Cybersecurity #Browsers #Firefox #Chrome #FexingoBusiness #BusinessPodcast

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In this episode of Networking Tech with Fexingo, Lucas and Luna dive into Resource Public Key Infrastructure (RPKI) — the cryptographic framework that prevents BGP hijacks and route leaks. They explain how RPKI works with Route Origin Authorizations (ROAs) to validate IP prefix ownership, using the 2024 and 2025 hijack statistics from MANRS to show why adoption matters. They also highlight real-world examples like the 2018 Amazon Route 53 hijack and the 2021 Facebook outage to illustrate the risks. The hosts discuss current adoption rates (about 40% of prefixes covered by ROAs by early 2026), the challenges of deployment for smaller networks, and how RPKI is evolving with ASPA (Autonomous System Provider Authorization) for path validation. Perfect for network engineers, IT pros, and anyone curious about how the internet stays secure from routing attacks.

#RPKI #BGP #RouteOriginAuthorization #InternetSecurity #BGPHijack #MANRS #ASPA #RouteLeak #NetworkEngineering #InternetInfrastructure #CryptoRouting #RoutingTable #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech #Infosec #CyberSecurity

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