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

In this episode of Networking Tech with Fexingo, Lucas and Luna explore how intent-based networking (IBN) is shifting network operations from manual, device-level configuration to a declarative model where operators specify business intent and the network figures out the implementation. They discuss real-world examples, the role of AI and machine learning, the challenges of adoption, and what it means for network engineers. Tune in to understand how IBN can reduce human error, improve security, and simplify multi-vendor environments.

#NetworkingTech #IntentBasedNetworking #NetworkAutomation #NetworkOperations #Technology #Business #AI #MachineLearning #NetworkEngineering #NetworkSecurity #Cisco #Juniper #FexingoBusiness #BusinessPodcast #NetworkInfrastructure #NetworkManagement #SDN #DigitalTransformation

Keep every episode free: buymeacoffee.com/fexingo

In Episode 141 of Networking Tech with Fexingo, Lucas and Luna explore how the command-line interface is losing its grip on network engineering. They trace the shift from manual CLI choreography to intent-based automation, using the example of a large retail chain that cut change-window times from hours to minutes by moving to a controller-based model with YANG data models and NETCONF. The conversation digs into why the CLI became the default in the first place, what automation actually solves, and the hidden risk of black-boxing the network. Lucas argues that the future is less about replacing humans and more about changing how they think about the network. Tune in for a practical look at what's next for the network engineer's most familiar tool.

#NetworkAutomation #CLI #NETCONF #YANG #IntentBasedNetworking #NetworkEngineering #TechPodcast #FexingoBusiness #BusinessPodcast #DigitalTransformation #ITInfrastructure #NetworkOperations #AgileNetworking #DevOps #NetOps #NetworkManagement #Automation #TechTrends

Keep every episode free: buymeacoffee.com/fexingo

Network engineers are at the center of a quiet revolution: AI training clusters now demand RDMA over Converged Ethernet (RoCEv2) for GPU-to-GPU communication at 400 Gbps per port. This episode breaks down how RoCEv2 bypasses the kernel to achieve microsecond latencies, why it requires lossless Ethernet fabrics with Priority Flow Control and Explicit Congestion Notification, and how the technology compares to InfiniBand for AI workloads. Lucas and Luna walk through real-world tuning challenges—buffer sizing, DCB configuration, and congestion management—and explain why cloud giants like AWS and Microsoft Azure are betting on RoCEv2 over InfiniBand. They also preview the Ultra Ethernet Consortium's efforts to standardize next-generation RDMA for AI. If you design or operate data center networks, this is the protocol stack you need to understand now.

#RoCEv2 #RDMA #AIDataCenters #GPUComputing #LosslessEthernet #PriorityFlowControl #ECN #DataCenterNetworking #InfiniBand #UltraEthernet #NVIDIA #DGX #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #FexingoNetworking #NetworkInfrastructure

Keep every episode free: buymeacoffee.com/fexingo

In this episode of Networking Tech with Fexingo, Lucas and Luna dive into the technology powering modern data center fabrics: EVPN-VXLAN. They explain why traditional VLAN segmentation breaks at scale and how VXLAN tunnels combined with BGP-based EVPN control plane enable flexible, multi-tenant overlay networks. Lucas walks through a real-world migration scenario—from 4,000 VLANs to a logical EVPN fabric—highlighting the role of BGP Route Reflectors and the jump in operational simplicity. The hosts also touch on challenges like MTU issues and the learning curve for network engineers transitioning from legacy designs. If you're in network engineering or cloud infrastructure, this episode gives you a concrete grasp of why EVPN-VXLAN has become the de facto standard for data center interconnect.

#EVPN #VXLAN #DataCenterNetworking #NetworkVirtualization #OverlayNetworks #BGP #NetworkEngineering #SDN #NetworkAutomation #Multitenancy #VXLANTunnel #NetworkFabric #Technology #TechPodcast #FexingoBusiness #BusinessPodcast #NetworkingTech #Podcast

Keep every episode free: buymeacoffee.com/fexingo

Episode 138 explores how anycast routing — where multiple servers share the same IP address — makes the internet more resilient. Lucas and Luna break down how BGP selects the closest server, why DNS root servers and CDNs rely on anycast for redundancy and DDoS mitigation, and the trade-offs engineers must manage. Specific examples include Cloudflare's 1.1.1.1, the L-root DNS server, and a recent DDoS attack absorbed by an anycast network. A must-listen for network engineers and anyone curious about the hidden architecture of the internet.

#Anycast #BGPRouting #InternetResilience #DNS #CDN #DDoSProtection #Cloudflare #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech #LRoot #BGPAnycast #LoadBalancing #Redundancy #RouteHijacking #ASPath

Keep every episode free: buymeacoffee.com/fexingo

Over the past two years, 400G Ethernet port shipments have more than tripled, driven by hyperscalers like Microsoft and Google who need to connect sprawling data centers handling AI workloads. This episode explores the shift from 100G to 400G: the coherent optics making it viable, the architectural changes it demands, and why some operators are already testing 800G. We also discuss the cost dynamics—per-bit cost drops by 30-40% with each generational leap—and the implications for latency and power consumption. Whether you're a network engineer or just curious about the invisible infrastructure powering the cloud, this episode explains why 400G is the new normal.

#Technology #Networking #DataCenter #400GEthernet #Ethernet #OpticalNetworking #CoherentOptics #Infrastructure #InternetInfrastructure #Routing #NetworkEngineering #FexingoBusiness #BusinessPodcast #TechPodcast #Internet #DataCenterInterconnect #AI #Cloud

Keep every episode free: buymeacoffee.com/fexingo

In this episode of Networking Tech with Fexingo, Lucas and Luna dive into the world of Precision Time Protocol (PTP) and its critical role in synchronizing networks that demand microsecond or nanosecond accuracy. They explain how PTP differs from traditional NTP, the hardware requirements for deployment, and the specific use cases in high-frequency trading, 5G telecommunications, smart grids, and cloud data centers. The hosts also discuss the security implications of time synchronization and the IEEE 1588 standard's evolution to include authentication. Using examples like a 5G cell tower's TDD switching and a stock exchange's order matching, they illustrate why PTP is becoming essential for deterministic network performance. Whether you're a network engineer or just curious about the invisible infrastructure that keeps modern systems aligned, this episode offers a clear, technical deep dive into a topic often overlooked in networking discussions.

#Precision Time Protocol #PTP #IEEE1588 #NetworkSynchronization #HighFrequencyTrading #5G #Telecom #NetworkInfrastructure #DeterministicNetworking #NetworkEngineering #TimingSecurity #SmartGrid #DataCenter #ClockSynchronization #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech

Keep every episode free: buymeacoffee.com/fexingo

Lucas and Luna explore how network engineers are adopting GitOps and version control to manage switch and router configurations, treating network state like application code. They walk through a real-world example of a data center team using Ansible, NAPALM, and Batfish in a CI/CD pipeline to test and deploy changes across hundreds of devices, cutting configuration drift and outage risks. The conversation covers how even legacy gear fits into this workflow, the role of network-as-code in reliability engineering, and why a commit log might be the most underrated tool in networking. A practical look at a shift that is reshaping how infrastructure teams operate.

#NetworkAsCode #GitOps #NetworkAutomation #Ansible #NAPALM #Batfish #ConfigurationManagement #NetworkEngineering #DevOps #InfrastructureAsCode #CICD #NetworkReliability #DataCenter #WhiteBoxSwitching #OpenNetworking #Technology #FexingoBusiness #BusinessPodcast

Keep every episode free: buymeacoffee.com/fexingo

Lucas and Luna dive into formal network verification, explaining how tools like Batfish catch BGP misconfigurations and routing black holes before they cause outages. They discuss real-world use cases in large data centers, the shift from manual testing to automated modeling, and how one company slashed change-related incidents by 80 percent. Plus, a behind-the-scenes look at how listener support keeps Fexingo ad-free.

#NetworkVerification #Batfish #ForwardNetworks #BGP #RoutingSecurity #NetworkEngineering #InternetInfrastructure #ConfigurationManagement #DevOps #DataCenter #Automation #IntentBasedNetworking #Technology #FexingoBusiness #BusinessPodcast #TechPodcast #LucasAndLuna #NetworkAutomation

Keep every episode free: buymeacoffee.com/fexingo

In this episode of Networking Tech with Fexingo, Lucas and Luna explore how P4 (Programming Protocol-independent Packet Processors) is transforming network infrastructure. As of mid-2026, P4 has moved from research labs into production data centers, enabling engineers to program switch data planes at line rate—handling tens of billions of operations per second. They discuss the shift from fixed-function ASICs to programmable pipelines, with real-world examples like Google's Jupiter fabric using P4 for custom load balancing and in-network telemetry. The hosts break down the technology's advantages, such as flexibility and performance, as well as its challenges, including the need for specialized skills and debugging complexity. They also touch on how P4 complements other network trends like eBPF and SDN, and what the future holds as hardware accelerators evolve. This episode is a must-listen for network engineers and tech professionals curious about the cutting edge of packet processing and infrastructure innovation.

#P4 #ProgrammableDataPlane #NetworkEngineering #DataCenter #GoogleJupiter #LineRate #ASIC #SDN #PacketProcessing #NetworkInfrastructure #NetworkingTech #FexingoBusiness #BusinessPodcast #Technology #NetworkAutomation #InNetworkTelemetry #LoadBalancing #SwitchDesign

Keep every episode free: buymeacoffee.com/fexingo