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

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

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Most engineers obsess over compute costs, but egress bandwidth charges can quietly eat a startup's margins. This episode dissects the case of a fictional cloud-native company that built a data-heavy video-processing product on AWS. Within six months, egress fees surpassed their EC2 bill by a factor of two. Lucas and Luna trace the math: why AWS charges $0.09 per gigabyte for data leaving its network, how startups can inadvertently design themselves into a cost trap, and why thinking about data gravity from day one is the real lesson. They also discuss three practical mitigations — content delivery networks, multi-cloud egress arbitrage, and peering at internet exchange points — that can slash the bill by 60% or more. A concrete look at a boring cost line that kills startups.

#CloudCosts #EgressPricing #AWS #CloudNative #StartupFinance #DataGravity #CDN #InternetExchange #MultiCloud #BandwidthCosts #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #CloudArchitecture #CostOptimization #Networking #CloudComputing

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Lucas and Luna dive into SD-WAN's real-world impact on enterprise networking, using a specific case: a multinational retailer that slashed WAN costs by 40% while improving application performance. They break down how SD-WAN decouples routing from hardware, the role of centralized controllers, and why traditional MPLS isn't dead yet. The episode also touches on security integration and common pitfalls. If you're in IT or business operations, this gives you a concrete framework for evaluating SD-WAN vs. legacy WAN architectures.

#SDWAN #EnterpriseNetworking #NetworkRouting #WANOptimization #MPLS #SoftwareDefinedNetworking #NetworkSecurity #ITInfrastructure #CloudNetworking #BandwidthManagement #NetworkAutomation #RemoteWork #TechPodcast #Technology #FexingoBusiness #BusinessPodcast #NetworkingTech #RoutingProtocols

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When a small regional ISP in Kentucky misconfigured its BGP route advertisements in March 2025, it took down major websites across North America for nearly four hours. Lucas and Luna dissect the anatomy of that leak — how a single router at a provider called NetRural accidentally advertised 20,000 more-specific prefixes, causing Amazon, Google, and Cloudflare to reroute traffic through congested paths. They explain why BGP still trusts every neighbor by default, why RPKI filters couldn't stop the leak quickly enough, and what operators are doing now to prevent the next one. A concrete lesson in how fragile the internet's routing fabric can be — and what it will take to harden it.

#BGP #BGPLeak #InternetInfrastructure #NetworkEngineering #NetRural #RouteLeak #RPKI #InternetResilience #NetworkOutage #BorderGatewayProtocol #RoutingSecurity #Technology #NetworkProtocols #ISPOutage #2025Outage #FexingoBusiness #BusinessPodcast #TechPodcast

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Episode 28 dives into Remote Direct Memory Access (RDMA), the networking technology that lets servers move data directly between their memory without involving the CPU or operating system. Lucas explains how RDMA has become essential for high-performance computing and storage in modern data centers, citing a specific example: a large cloud provider cut latency from 100 microseconds to under 10 for storage operations by switching to RDMA over Converged Ethernet (RoCEv2). Luna asks about the main trade-off—RDMA requires lossless networks, so data centers must handle flow control carefully. They discuss how InfiniBand, the original RDMA fabric, competes with RoCEv2, and why NVIDIA's acquisition of Mellanox tilted the balance. A quick look at how RDMA enables GPU-direct communication for AI training clusters, moving data between GPUs at 200 gigabits per second. Donation segment near the end: 'If this tech deep-dive was worth a coffee to you...'

#RDMA #RemoteDirectMemoryAccess #DataCenterNetworking #RoCEv2 #InfiniBand #NVIDIA #Mellanox #GPUDirect #HighPerformanceComputing #StorageNetworking #LosslessNetworking #AIInfrastructure #Technology #NetworkingTech #FexingoBusiness #BusinessPodcast #LucasAndLuna #NetworkEngineering

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Lucas and Luna dive into SRv6 (Segment Routing over IPv6), the new protocol quietly reshaping how major ISPs and cloud providers route traffic across the internet. They break down how SRv6 simplifies the network stack by embedding instructions directly into the packet header, eliminating complex MPLS labels and reducing CPU load on core routers. Using real-world examples from providers like Comcast and China Mobile, they explain how SRv6 enables traffic engineering, network slicing, and service chaining without the overhead of traditional protocols. They also discuss adoption challenges, including the need for IPv6 deployment and hardware upgrades. By the end, you'll understand why SRv6 is being called the biggest shift in routing since BGP — and why it matters for latency, reliability, and the future of the internet backbone.

#SRv6 #SegmentRouting #IPv6 #InternetRouting #NetworkEngineering #BGP #MPLS #TrafficEngineering #NetworkInfrastructure #Comcast #ChinaMobile #ServiceProvider #CloudNetworking #NetworkAutomation #NetworkingProtocols #Technology #FexingoBusiness #BusinessPodcast

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Ever wonder what happens when data crosses from one network to another? Lucas and Luna explore the hidden backbone of the internet: internet exchange points (IXPs). They zoom in on the Amsterdam Internet Exchange (AMS-IX), the world's largest IXP by connected networks. Lucas explains how IXPs reduce latency and cost compared to traditional peering, why they're critical for streaming and gaming, and how emerging markets are building their own to keep traffic local. Along the way, they discuss the rise of cloud-first IXPs and what that means for enterprise network design.

#InternetExchangePoint #IXP #AMSIX #Peering #Networking #InternetInfrastructure #Latency #CloudNetworking #NetworkEngineering #DataFlow #BGP #Routing #Technology #BusinessPodcast #FexingoBusiness #NetworkArchitecture #DigitalInfrastructure #TechExplained

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The internet's routing table is built on trust, which means any network can accidentally — or maliciously — claim ownership of IP blocks that don't belong to them. This episode dives into Resource Public Key Infrastructure (RPKI), the cryptographic framework designed to prevent BGP hijacks and route leaks. Lucas explains how RPKI works, why only 42 percent of the global routing table is currently protected by Route Origin Authorization (ROA) records as of mid-2026, and the real-world consequences of weak routing security. Luna asks about the adoption bottlenecks — from legacy systems to ISP inertia — and both hosts discuss the recent push from major cloud providers and content delivery networks to require RPKI validation. Listeners will learn the difference between RPKI, BGPsec, and simple filtering, and why a small Caribbean ISP's hijack of YouTube traffic in 2024 remains a cautionary tale. The episode closes on the question of whether market pressure or regulation will ultimately drive universal adoption.

#RPKI #BGP #RoutingSecurity #InternetInfrastructure #NetworkEngineering #BGPsec #ROA #RouteHijacking #Cybersecurity #CloudProviders #ContentDelivery #Technology #Networking #FexingoBusiness #BusinessPodcast #NetworkReliability #IPAddressing #InternetGovernance

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In this episode, Lucas and Luna dive into the Domain Name System as a critical routing layer that most users never see. They explain how DNS queries traverse multiple servers, the difference between recursive and authoritative resolvers, and the real-world impact of a slow or misconfigured DNS. Using Cloudflare's 1.1.1.1 and Google's 8.8.8.8 as examples, they discuss how DNS routing can affect page load times, security, and even which content you can access. The conversation also touches on DNS-over-HTTPS and how it changes the routing equation. A practical primer for anyone curious about what happens when they type a URL into their browser.

#DNS #DomainNameSystem #Routing #InternetInfrastructure #Cloudflare #GoogleDNS #DNSOverHTTPS #RecursiveResolver #AuthoritativeNameserver #NetworkEngineering #Technology #FexingoBusiness #BusinessPodcast #TechPodcast #InternetRouting #DNSSEC #Latency #WebPerformance

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Border Gateway Protocol is the glue that holds the internet together, but it was designed for trust, not security. In this episode, Lucas and Luna dig into BGP hijacking — how a single misconfigured or malicious announcement can reroute global traffic, redirect email, or even steal cryptocurrency. They walk through the 2008 Pakistan YouTube incident, the 2018 AWS route leak, and the mechanics behind the recent BGP attacks targeting crypto exchanges in early 2026. Along the way, they explain RPKI (Resource Public Key Infrastructure) and why only about 40 percent of networks have deployed it. Listeners will come away understanding why internet routing is still held together by trust, and what's being done about it — including the new MANRS initiative and mandatory RPKI proposals at the FCC. A specific, grounded look at one of the internet's most quietly dangerous vulnerabilities.

#BGP #BGP-Hijacking #Internet-Routing #Network-Security #RPKI #MANRS #Border-Gateway-Protocol #Cyber-Attacks #Route-Leaks #Network-Engineering #Infrastructure-Vulnerability #Crypto-Exchanges #Pakistan-YouTube #AWS-Route-Leak #FCC #Technology #FexingoBusiness #BusinessPodcast

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