Skip to content
Artwork for Networking Tech with Fexingo: Internet Infrastructure, Routing, and Network Engineering

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
Play
  • 21 episodes
  • daily
  • Avg 9 min
  • English

Support the show

Goes straight to the publisher. podnod takes nothing.

Counted on this page — what you have heard stays on this device, so it is not something the list can be paged by.
  • S4 · E176
    Yesterday · 10 min

    How BGP Hijacks Still Happen and What We Can Do

    Despite years of security upgrades like RPKI, Border Gateway Protocol hijacks remain a persistent threat to global internet routing. This episode examines the mechanics behind recent hijack attempts, why automated validation hasn't fully solved the...

    • Transcript
  • S4 · E175
    Friday · 8 min

    How The Internet Routes Around Black Holes

    We explore the hidden mechanics of black hole routing and how network engineers use unnumbered links to stabilize core infrastructure. This episode breaks down why IP addresses aren't always necessary for reliable connectivity, focusing on the...

    • Transcript
  • S4 · E174
    Thursday · 11 min

    How The Internet's Physical Cables Decide Your Latency

    We explore the physical layer of internet infrastructure, specifically how undersea cable geography and fiber optic attenuation dictate global latency. Lucas and Luna break down why your data takes a specific path through the Atlantic, the role of...

    • Transcript
  • S4 · E173
    Wednesday · 8 min

    The Hidden Cost of IPv4 Exhaustion

    We explore how the exhaustion of IPv4 addresses has forced a massive, invisible shift in global internet infrastructure. With the primary pool officially depleted years ago, organizations now rely on Carrier-Grade NAT and complex translation layers to...

    • Transcript
  • S4 · E172
    Tuesday · 7 min

    How Optical Networking Is Saving The Cloud

    Cloud providers are hitting a physical wall: copper cables can no longer carry data fast enough across data centers. This episode explores how major hyperscalers are pivoting to optical networking, using coherent optics and silicon photonics to boost...

    • Transcript
  • S4 · E171
    Monday · 9 min

    How Network Slicing Is Reshaping the Internet

    In this episode, Lucas and Luna dive into network slicing—the technology that lets ISPs carve a single physical network into multiple virtual ones, each with its own guaranteed performance. They use the example of a 5G network operator slicing bandwidth...

    • Transcript
  • S4 · E170
    August 30 · 7 min

    How Segment Routing Is Reshaping the Internet's Core

    The internet's routing table is growing at an unsustainable rate, and network engineers are turning to segment routing to keep the core from buckling under its own complexity. In this episode, hosts Lucas and Luna dig into the specific problem: the...

    • Transcript
  • S4 · E169
    August 29 · 14 min

    How Segment Routing Is Simplifying Network Operations

    In this episode of Networking Tech with Fexingo, Lucas and Luna dive into segment routing and how it's changing the way network engineers design and operate large-scale IP networks. They use a real-world example of a global content delivery network that...

    • Transcript
  • S4 · E168
    August 28 · 12 min

    How Ethernet Is Winning the Battle Against InfiniBand

    In this episode of Networking Tech, Lucas and Luna dive into the surprising resurgence of Ethernet in high-performance computing, where InfiniBand has long held the crown. They explore how the rise of AI training clusters has forced Ethernet vendors to...

    • Transcript
  • S4 · E167
    August 27 · 8 min

    How DNS Anycast Is Reshaping Global Internet Resilience

    In this episode of Networking Tech with Fexingo, Lucas and Luna explore how DNS anycast has quietly become one of the internet's most critical reliability mechanisms. They break down the mechanics of anycast — how a single IP address can be served from...

    • Transcript
  • S4 · E166
    August 26 · 8 min

    How Ethernet Is Winning the Battle Against InfiniBand

    In the race to build faster data centers, Ethernet and InfiniBand have been locked in a decades-long tug-of-war. But as AI training clusters demand unprecedented bandwidth, Ethernet is quietly pulling ahead. We look at the Ultra Ethernet Consortium...

    • Transcript
  • S4 · E165
    August 25 · 8 min

    How Network Automation Is Changing Network Engineering Jobs

    Network automation is transforming the job of the network engineer. In this episode, Lucas and Luna explore how the shift from manual CLI configuration to software-defined networking is changing the skills, roles, and career paths of the people who run...

    • Transcript
  • S4 · E164
    August 24 · 10 min

    How Latency-Based Routing Shapes Global Internet Performance

    In episode 164 of Networking Tech with Fexingo, Lucas and Luna explore how latency-based routing is quietly reshaping global internet performance. They dig into the mechanics behind anycast, BGP tuning, and real-world examples like Cloudflare and...

    • Transcript
  • S4 · E163
    August 23 · 10 min

    How Network Automation Is Reshaping the Data Center

    In this episode of Networking Tech, Lucas and Luna explore how network automation is transforming data center operations, moving beyond the CLI to intent-based and policy-driven management. They drill into a real-world case: a global financial firm's...

    • Transcript
  • S4 · E162
    August 22 · 7 min

    How BGP Wedgies Expose the Internet's Fragile Routing

    In this episode of Networking Tech with Fexingo, Lucas and Luna dig into a surprisingly common but little-known internet failure mode: the BGP wedgie. They walk through a realistic example where two networks' routing policies lock each other into a black...

    • Transcript
  • S4 · E161
    August 21 · 9 min

    How Segment Routing Makes the Internet More Resilient

    In episode 161 of Networking Tech with Fexingo, Lucas and Luna dig into the mechanics of segment routing, focusing on how it's changing network resilience. They explore the difference between traditional hop-by-hop routing and source-based path...

    • Transcript
  • S4 · E160
    August 20 · 8 min

    How BGP Is Evolving with SRv6 and Network Slicing

    In this episode of Networking Tech with Fexingo, Lucas and Luna explore the next big evolution in internet routing: the transition from MPLS-based segment routing to SRv6, and how this shift is enabling new capabilities like network slicing. They discuss...

    • Transcript
  • S4 · E159
    August 19 · 7 min

    How BGP Is Becoming More Secure with RPKI

    In this episode of Networking Tech with Fexingo, Lucas and Luna explore the internet's trust problem: BGP, the protocol that routes traffic across the globe, was designed for a trusted network, but route hijacks and leaks have become a daily threat. They...

    • Transcript
  • S4 · E158
    August 18 · 7 min

    How BGP Flowspec Is Stopping DDoS Attacks

    In this episode of Networking Tech with Fexingo, Lucas and Luna break down BGP Flowspec, a technology that's quietly changing how network operators defend against DDoS attacks. They explain how Flowspec works, why it's more precise than traditional RTBH...

    • Transcript
  • S4 · E157
    August 17 · 8 min

    How Network Verification Prevents Outages Before They Happen

    Network outages cost millions and erode trust. But what if you could prove your network will work before you touch it? In this episode, Lucas and Luna explore the rise of network verification — the practice of mathematically proving that routing and...

    • Transcript
Showing 1–20 of 21 episodes