エピソード

  • How Link-State Routing Converges After a Fiber Cut

    How Link-State Routing Converges After a Fiber Cut
    2026/06/08
    Episode 39 dives into the mechanics of link-state routing protocols like OSPF and IS-IS when a fiber cut happens. Using the real-world example of a multi-vendor outage in Frankfurt in late 2025, Lucas and Luna walk through the convergence sequence: failure detection, LSA flooding, SPF recalculation, and FIB update. They explain why convergence times vary from milliseconds to seconds depending on technology choices like Bidirectional Forwarding Detection (BFD) and incremental SPF. The episode also covers the trade-off between fast convergence and network stability, including how timer back-off mechanisms prevent micro-loop storms. A concrete look at what happens inside routers when a trench gets dug in the wrong place. #LinkStateRouting #OSPF #ISIS #BFD #SPF #Convergence #FiberCut #NetworkEngineering #RouteRedistribution #MicroLoop #FIB #LSA #FrankfurtOutage #Technology #FexingoBusiness #BusinessPodcast #InternetInfrastructure #RoutingProtocols Keep every episode free: buymeacoffee.com/fexingo
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    6 分
  • How Zero Touch Provisioning Automates Network Deployment

    How Zero Touch Provisioning Automates Network Deployment
    2026/06/08
    Episode 38 of Networking Tech with Fexingo explores Zero Touch Provisioning (ZTP), the automation technology that lets network devices configure themselves without manual intervention. Lucas and Luna break down how ZTP works using DHCP and bootstrap servers, why it's essential for large-scale data center deployments, and how it reduces human error. They discuss real-world adoption by cloud providers and enterprises, compare ZTP to legacy manual provisioning, and touch on security considerations like authenticated bootstrapping. The episode also covers how ZTP fits into the broader network automation ecosystem alongside tools like Ansible and Cisco DNA Center. A must-listen for network engineers and anyone curious about how modern networks are built at scale. #ZeroTouchProvisioning #NetworkAutomation #DHCP #BootstrapServer #DataCenter #Cisco #Ansible #CiscoDNACenter #NetworkEngineering #Technology #Automation #CloudNetworking #EnterpriseNetworking #ConfigurationManagement #NetworkDeployment #FexingoBusiness #BusinessPodcast #NetworkingTech Keep every episode free: buymeacoffee.com/fexingo
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    10 分
  • How Network Configuration Drift Causes Outages

    How Network Configuration Drift Causes Outages
    2026/06/07
    Episode 37 of Networking Tech with Fexingo. Lucas and Luna explore network configuration drift—the silent accumulation of undocumented changes that leads to unexpected outages. They walk through a real 2025 incident where a single uncommitted 'no shut' command on a core router caused a 47-minute outage for a major European bank. They explain what drift is, how it happens (manual patches, emergency changes, OS upgrades), and why traditional auditing tools catch only 60% of discrepancies. They also discuss emerging solutions: intent-based networking, automated backup validation, and immutable infrastructure. The episode closes with a practical takeaway: any network engineer can start a simple 'golden config' diff process this week without buying new software. #NetworkConfigurationDrift #NetworkOutages #RouterConfig #IntentBasedNetworking #GoldenConfig #NetworkAutomation #NetworkEngineering #NetworkReliability #TechIncident #EuropeanBank #ConfigurationManagement #ImmutableInfrastructure #NetworkAudit #CLI #Ansible #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    8 分
  • How Ethernet Is Evolving Beyond the Data Center

    How Ethernet Is Evolving Beyond the Data Center
    2026/06/07
    Ethernet is the quiet backbone of the internet, but it's not standing still. In this episode, Lucas and Luna explore how Ethernet is evolving beyond the data center to meet the demands of 5G, industrial IoT, and autonomous systems. They focus on the IEEE 802.3cz standard for 800 Gigabit Ethernet, the rise of Time-Sensitive Networking (TSN) for deterministic latency, and how companies like Cisco and Arista are pushing Ethernet into new realms like in-vehicle networking and factory floors. Luna challenges whether Ethernet can really replace dedicated fieldbus systems in manufacturing, while Lucas argues that its ubiquity and cost advantages make it inevitable. The conversation lands on a specific example: BMW's use of TSN over Ethernet for real-time control in its assembly lines. If you think Ethernet is just a cable in your office wall, this episode will change your mind. #EthernetEvolution #8023cz #800GigabitEthernet #TimeSensitiveNetworking #TSN #IndustrialIoT #AutonomousSystems #BMW #Cisco #Arista #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #InternetInfrastructure #Routing #DeterministicNetworking #IEEE Keep every episode free: buymeacoffee.com/fexingo
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    8 分
  • How VXLAN Is Stretching Layer 2 Across Data Centers

    How VXLAN Is Stretching Layer 2 Across Data Centers
    2026/06/06
    Episode 35 of Networking Tech with Fexingo dives into VXLAN (Virtual Extensible LAN) — the overlay protocol that lets network engineers stretch Layer 2 networks across distant data centers. Lucas and Luna unpack how VXLAN encapsulates Ethernet frames in UDP packets, enabling virtual machine mobility and multi-tenant isolation without rewriting physical infrastructure. They walk through a real scenario: a cloud provider migrating a live database workload between data centers in Ashburn and Dallas with zero downtime. The conversation covers VXLAN's 24-bit segment ID (16 million virtual networks vs. VLAN's 4096), the role of VTEPs (VXLAN Tunnel Endpoints), and why hardware offload matters for line-rate performance. They also touch on trade-offs — increased MTU overhead, multicast dependency in early implementations, and how EVPN (Ethernet VPN) now solves control-plane scaling. No marketing fluff, just clear engineering insight on one of the most important data-center networking technologies of the last decade. #VXLAN #NetworkVirtualization #DataCenterNetworking #OverlayNetworks #VTEP #EVPN #Layer2Extension #CloudNetworking #Cisco #VMwareNSX #NetworkEncapsulation #UDP #MultiTenancy #VLAN #Technology #NetworkingTech #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    12 分
  • How Segment Routing Simplifies Network Traffic Engineering

    How Segment Routing Simplifies Network Traffic Engineering
    2026/06/06
    Lucas and Luna dive into segment routing, a modern traffic engineering approach that simplifies how networks steer packets. They explain how segment routing labels replace complex per-flow state, compare it to MPLS, and walk through a real-world case where a large cloud provider cut bandwidth costs by 30 percent. The episode covers the role of the segment routing header in IPv6, how it improves network utilization, and why engineers say it makes troubleshooting easier. They also touch on the inevitable trade-offs: hardware upgrades and a learning curve for teams used to traditional routing protocols. A concrete look at a technology quietly reshaping backbone and data center networks. #SegmentRouting #SRv6 #TrafficEngineering #NetworkRouting #MPLS #IPv6 #SDN #NetworkOptimization #BackboneNetworks #DataCenter #TechExplainer #NetworkEngineering #InternetInfrastructure #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech #PodcastEpisode Keep every episode free: buymeacoffee.com/fexingo
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    10 分
  • How Zettastructure Is Reshaping Data Center Routing

    How Zettastructure Is Reshaping Data Center Routing
    2026/06/05
    Episode 33 of Networking Tech with Fexingo dives into Zettastructure, a radical network architecture that treats the entire data center fabric as a single logical switch. Lucas and Luna unpack how this approach, pioneered by startups like DriveNets and Arrcus, disaggregates hardware from software and uses centralized control planes to eliminate spine-leaf complexity. They walk through a real example: a 100,000-server cluster where traditional routing would require dozens of protocol sessions, but Zettastructure reduces it to just one. With references to white-box switching and the Open Config initiative, this episode explains why hyperscalers like Google and Meta are quietly adopting elements of this design. By June 2026, the approach is moving from edge labs to mainstream enterprise. Expect concrete numbers on cost savings (roughly 40% lower capital expenditure) and latency improvements (sub-10 microsecond fabric-wide). A must for network engineers evaluating next-gen data center designs. #Zettastructure #DataCenterNetwork #Routing #DriveNets #Arrcus #WhiteBoxSwitching #OpenConfig #NetworkArchitecture #SpineLeaf #Hyperscaler #Google #Meta #CentralizedControlPlane #NetworkDisaggregation #Technology #FexingoBusiness #BusinessPodcast #InternetInfrastructure Keep every episode free: buymeacoffee.com/fexingo
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    10 分
  • How Network Slicing Customizes Bandwidth for Critical Applications

    How Network Slicing Customizes Bandwidth for Critical Applications
    2026/06/05
    In this episode of Networking Tech with Fexingo, Lucas and Luna explore network slicing—a technology that carves virtual lanes out of a single physical network, each with guaranteed bandwidth and latency. They trace its roots to 5G mobile networks, where operators slice spectrum for autonomous vehicles versus streaming video. Then they shift to the enterprise: how companies are now slicing their own WANs to isolate video conferencing from bulk backups, using a case study of a hospital that sliced its network to give telemedicine traffic priority over administrative web browsing. Along the way, they touch on the role of software-defined networking and network function virtualization in making slicing practical. The episode ends with a forward look at how network slicing could evolve into an on-demand service traded via APIs. They also include a brief, organic reminder about listener support for the ad-free podcast. #NetworkSlicing #5G #SoftwareDefinedNetworking #SDN #NetworkFunctionVirtualization #NFV #Latency #Bandwidth #Telemedicine #AutonomousVehicles #WAN #EnterpriseNetworking #QoS #ServiceLevelAgreement #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    7 分