# Ethernet Ethernet is a local area networking standard that specifies operation across multiple speeds using common MAC and MIB specifications. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## CVITEK CV1842H-P-based edge AI camera module offers night vision and AI-ISP support (Crowdfunding) DevFeed: [CVITEK CV1842H-P-based edge AI camera module offers night vision and AI-ISP support (Crowdfunding)]() Original publisher: [Read original article]() Author: Debashis Das Published: 2026-09-16T00:00:55Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Artificial Intelligence](), [Embedded Systems](), [AI Inference](), [V](), [Arm](), [cpu](), [Open Source](), [Ethernet](), [Linux](), [Toit]() Tags: [ai](), [arm](), [artificial-intelligence-ai](), [camera](), [computer-vision](), [cpu](), [debug](), [edge-ai](), [embedded](), [ethernet](), [hardware](), [inference](), [kickstarter](), [linux](), [module](), [open-source](), [real-time](), [risc-v](), [robotics](), [rt-thread](), [soc](), [sophgo](), [tinyml](), [usb](), [video](), [vision]() ### AI overview The AIMORELOGY Ovis is an open-source modular AI vision camera built around the CVITEK CV1842H-P SoC. It provides full-color 1080p night vision, 1.5 TOPS edge AI inference, USB and Ethernet connectivity, and a dual-OS environment using Linux and RT-Thread. ### Source excerpt The AIMORELOGY Ovis is an open-source AI vision camera module built around the CVITEK CV1842H-P SoC, with full-color 1080p night vision and 1.5 TOPS edge AI inference in a compact modular design. It is designed for drones, robotics, security systems, smart cameras, and custom embedded vision products. The camera features a compact stacked design, with a 20 x 20 mm Core board that includes the CVITEK CV1842H-P SoC, 2 Gbit NAND flash, USB, and UART debug pads. A Sensor board with the SC235HAI image sensor connects on top and also adds Ethernet and UART interfaces. An optional CVBS board goes between the Sensor board and the Ovis Core board. AIMORELOGY Ovis specifications: Ovis Core Board SoC - CVITEK CV1842H-P CPU - 1x Arm Cortex-A53 core @ 1.1 GHz, 1x RISC-V C906 core @ 800 MHz NPU - 1.5 TOPS @ INT8 with BF16 support ISP - AI-ISP with real-time 1080p [...] The post CVITEK CV1842H-P-based edge AI camera module offers night vision and AI-ISP support (Crowdfunding) appeared first on CNX Software - Embedded Systems News. ## FS Pairs 1.6T Scale-Out Optics With 500 km Coherent Modules and a Handheld Toolkit for AI Fabrics DevFeed: [FS Pairs 1.6T Scale-Out Optics With 500 km Coherent Modules and a Handheld Toolkit for AI Fabrics]() Original publisher: [Read original article]() Author: Harold Fritts Published: 2026-09-14T17:34:25Z Content type: news Language: en Sources: [StorageReview.com]() Topics: [GPU](), [InfiniBand](), [Networks](), [Ethernet](), [datacenter](), [Nvidia](), [data]() Tags: [announcement](), [data-center](), [enterprise](), [ethernet](), [gpu](), [infiniband](), [networking](), [networks](), [nvidia]() ### AI overview FS presents a two-part optics portfolio for AI networking: 400G, 800G, and 1.6T Scale-Out transceivers for links within GPU clusters, plus 400G and 800G Scale-Across coherent modules for connecting clusters across sites up to 500 km. The announcement also introduces the BOX 5 Ultra handheld toolkit for configuring, validating, and monitoring transceivers from 100M to 1.6T. ### Source excerpt FS has organized its AI optics into a two-part portfolio: Scale-Out transceivers at 400G, 800G, and 1.6T for the links inside a GPU cluster, and Scale-Across coherent modules at 400G and 800G for stitching clusters together across sites at distances up to 500 km. The Scale-Out side covers Ethernet, RoCE, and InfiniBand fabrics between GPU The post FS Pairs 1.6T Scale-Out Optics With 500 km Coherent Modules and a Handheld Toolkit for AI Fabrics appeared first on StorageReview.com. ## OpenNMC is an open replacement for expensive APC management cards DevFeed: [OpenNMC is an open replacement for expensive APC management cards]() Original publisher: [Read original article]() Author: jeff@jeffgeerling.com (Jeff Geerling) Published: 2026-09-08T16:00:00Z Content type: article Language: en Sources: [Jeff Geerling]() Topics: [Opennmc](), [Homelab](), [Hardware](), [Open Source](), [GitLab](), [Ethernet](), [USB](), [Crowd Supply](), [Reddit]() Tags: [apc](), [ethernet](), [firmware](), [gitlab](), [hardware](), [homelab](), [open-source](), [opennmc](), [sponsored](), [ups](), [usb]() ### AI overview The article tests OpenNMC, an open-source replacement for proprietary APC UPS management cards. It describes hot-pluggable installation, built-in NUT server support, Ethernet and wireless connectivity, and an initial USB-C serial setup. ### Source excerpt UPSes are typically the most boring part of your homelab, but they're important. One of their main jobs is to give servers time to shut down safely if the power goes out. Another job is to condition your power so your servers can run smoothly. To do both of those things well, you need a smart interface. And at least with APC, there are tons of older UPSes that use Network Management Cards. The one pictured below is the NMC 2, and I pulled out of my old APC Smart-UPS 2200 XL (pictured above). ## GPIBee (UsbGpib V3) USB-to-GPIB adapter gains Ethernet (PoE), but launches as closed-source hardware DevFeed: [GPIBee (UsbGpib V3) USB-to-GPIB adapter gains Ethernet (PoE), but launches as closed-source hardware]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-09-02T10:13:55Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Ethernet](), [Hardware](), [USB](), [Embedded Systems](), [Open Source]() Tags: [electronics](), [embedded-systems](), [ethernet](), [firmware](), [hardware](), [linux](), [oscilloscope](), [poe](), [tools](), [usb](), [video]() ### AI overview XyphroLabs' GPIBee, formerly UsbGpib V3, is a USB-to-GPIB adapter that adds Ethernet with PoE, faster USB 2.0 connectivity, and web-based instrument front ends. Unlike the earlier UsbGpib V1 and V2 products, GPIBee launches as closed-source hardware. ### Source excerpt Last December, we wrote about XyphroLabs's UsbGpib open-source hardware, affordable, and portable USB-to-GPIB adapter designed for legacy GPIB/IEEE-488 instruments and offering modern hardware and software. At the time, the UsbGpib V3 was also in the works with Ethernet (PoE) support, and the good news is that it's now available, but named GPIBee. The less good news is that while V1 and V2 were both open-source hardware products (and still are), the GPIBee has been released as closed-source hardware for reasons we'll explain below. GPIBee specifications: Microcontroller - Not disclosed. But not the Microchip ATMega32U4 8-bit AVR MCU found in V2 since its USB interface is limited to 12 Mbps Host interfaces USB 2.0 (480 Mbps) Type-C port with support for four modes Full USBTMC (USB Test and Measurement Class) VXI-11 over USB-Ethernet (CDC NCM) linux-gpib native interface Prologix-compatible (++ commands) via CDC UART (virtual COM port) 10/100Mbps Ethernet RJ45 port [...] The post GPIBee (UsbGpib V3) USB-to-GPIB adapter gains Ethernet (PoE), but launches as closed-source hardware appeared first on CNX Software - Embedded Systems News. ## Circuit Valley CHC5 - A modular USB, HDMI, and Ethernet camera system (Crowdfunding) DevFeed: [Circuit Valley CHC5 - A modular USB, HDMI, and Ethernet camera system (Crowdfunding)]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-09-02T07:25:10Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [webcam](), [Hardware](), [USB](), [hdmi](), [Ethernet](), [SOC](), [Embedded Systems](), [Linux](), [SDK](), [Open Source]() Tags: [arm](), [buildroot](), [c-c-plus-plus](), [camera](), [computer-vision](), [edge-ai](), [embedded-systems](), [ethernet](), [fpga](), [hardware](), [hdmi](), [kickstarter](), [linux](), [open-source](), [poe](), [sdk](), [soc](), [usb](), [video](), [xilinx-zynq]() ### AI overview CNX Software reports on Circuit Valley's CHC5, a modular camera system built around an AMD/Xilinx Zynq-7020 SoC FPGA. It supports interchangeable sensor and lens configurations, USB, HDMI, and Gigabit Ethernet interfaces, and image-processing and machine-vision workloads. ### Source excerpt Circuit Valley's CHC5 is a modular camera system based on a Core board powered by an AMD/Xilinx Zynq-7020 SoC FPGA, a range of interface boards with USB, HDMI, or Ethernet (PoE), various sensor boards, and a metal enclosure. The solution can be customized with different lens objectives and different sensors with MIPI D-PHY, LVDS, Sub-LVDS, Low Voltage LVDS, or SLVS interfaces. The Zynq-7020's Cortex-A9 cores can handle complex tasks, while the FPGA fabric takes care of high-speed calculation and correction on the image, and can also be leveraged for AI/machine-vision-specific algorithms or complex low-latency hardware acceleration. CHC5 specifications: Core board SoC - Xilinx AMD Zynq-7020 SoC FPGA CPU - Dual-core Arm Cortex-A9 processor FPGA - 85K logic cells, 4.9Mb Block RAM, 220 DSP slices System Memory - 1GB DDR3 Storage 1 Gbit flash memory MicroSD card slot ISP - Full-fledged ISP implemented on FPGA fabric Multiple interface boards with 10Gbps [...] The post Circuit Valley CHC5 - A modular USB, HDMI, and Ethernet camera system (Crowdfunding) appeared first on CNX Software - Embedded Systems News. ## Orange Pi Zero 4 - Compact Allwinner A733 SBC offers HDMI, USB-C DP, GbE, WiFI 6, PCIe FFC connector for $26.5 and up DevFeed: [Orange Pi Zero 4 - Compact Allwinner A733 SBC offers HDMI, USB-C DP, GbE, WiFI 6, PCIe FFC connector for $26.5 and up]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-08-31T07:13:46Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Embedded Systems](), [SOC](), [Arm](), [cpu](), [wifi 6](), [GPU](), [Bluetooth](), [RISC-V](), [hdmi](), [USB](), [Ethernet](), [OpenGL]() Tags: [allwinner](), [allwinner-a-series](), [android](), [arm](), [armbian](), [bluetooth](), [cortex-a55](), [cpu](), [debian](), [embedded-systems](), [gigabit-ethernet](), [gpu](), [h-264](), [hardware](), [hdmi](), [linux](), [npu](), [opencl](), [orange-pi](), [pcie](), [single-board-computer](), [specifications](), [ubuntu](), [usb](), [vp9](), [vulkan](), [wifi-6]() ### AI overview The Orange Pi Zero 4 is a compact single-board computer based on the Allwinner A733, with up to 8GB of memory, eMMC or UFS storage support, mini HDMI, USB-C DisplayPort, Gigabit Ethernet, Wi-Fi 6, Bluetooth 5.4, camera interfaces, GPIO, and a PCIe FFC connector. The article lists its specifications, planned operating-system images, and expected Armbian support. ### Source excerpt Orange Pi Zero 4 is an affordable yet feature-rich Allwinner A733 single board computer (SBC) with up to 8GB RAM, eMMC/UFS storage footprint, a microSD card slot, and plenty of I/Os. The board packs mini HDMI and USB-C DisplayPort, Gigabit Ethernet, WiFi 6 and Bluetooth 5.4, two MIPI CSI camera connectors, a Raspberry Pi-style PCIe FFC connector, and two GPIO headers into a compact 55x50mm form factor. Orange Pi Zero 4 specifications: SoC - Allwinner A733 CPU Dual-core Arm Cortex-A76 @ up to 2.00 GHz Hexa-core Arm Cortex-A55 @ up to 1.79 GHz Single-core RISC-V E902 real-time core up to 200 MHz GPU - Imagination Technologies BXM-4-64 MC1 GPU with support for OpenGL ES 3.2, Vulkan 1.3, OpenCL 3.0 VPU 8Kp24 H.265/VP9/AVS2 decoding 4Kp30 H.265/H.264 encoding AI accelerator - 3 TOPS NPU System Memory - 1GB, 2GB, 4GB, 6GB, or 8GB LPDDR5/LPDDR4/LPDDR4x; note: 16GB is also listed in the specs, [...] The post Orange Pi Zero 4 - Compact Allwinner A733 SBC offers HDMI, USB-C DP, GbE, WiFI 6, PCIe FFC connector for $26.5 and up appeared first on CNX Software - Embedded Systems News. ## MetaRoCE: A New RDMA Transport Built for AI-Scale Ethernet DevFeed: [MetaRoCE: A New RDMA Transport Built for AI-Scale Ethernet]() Original publisher: [Read original article]() Author: Arvind Srinivasan; Neil Spring; Omar Baldonado; Rajiv Krishnamurthy Published: 2026-08-24T18:02:29Z Content type: article Language: en Sources: [Engineering at Meta]() Topics: [Ethernet](), [Networks](), [AI Infrastructure](), [GPU](), [data centers](), [Low Latency](), [telemetry](), [Inference]() Tags: [ai-infrastructure](), [data-center-engineering](), [data-centers](), [data-infrastructure](), [ethernet](), [gpu](), [low-latency](), [networking-traffic](), [open-source](), [performance](), [real-time](), [telemetry]() ### AI overview Meta introduces MetaRoCE, an RDMA transport protocol designed for AI workloads on commodity Ethernet at million-GPU scale. The article describes its release through the Open Compute Project and explains how endpoint intelligence, packet spraying, fine-grained logical paths, and real-time telemetry aim to provide high throughput, low tail latency, and operational simplicity for distributed training and inference. ### Source excerpt Training and serving frontier AI models depends on fast, reliable networks that move data between GPUs without wasting compute cycles. To meet this challenge at scale, Meta designed MetaRoCE - a clean-sheet RDMA transport protocol purpose-built for AI workloads on commodity Ethernet. We're releasing the MetaRoCE specification, a reference software implementation and a compliance test [...] Read More... The post MetaRoCE: A New RDMA Transport Built for AI-Scale Ethernet appeared first on Engineering at Meta. ## Giga-Scale AI and the Ethernet Evolution: How Spectrum-X Ethernet Rewrites the Rules DevFeed: [Giga-Scale AI and the Ethernet Evolution: How Spectrum-X Ethernet Rewrites the Rules]() Original publisher: [Read original article]() Author: Elizabeth Goodman Published: 2026-08-24T15:08:39Z Content type: article Language: en Sources: [NVIDIA Developer](), [NVIDIA Technical Blog]() Topics: [Spectrum-X](), [Ethernet](), [Generative AI](), [networking](), [datacenter](), [Nvidia]() Tags: [ai](), [ai-agent](), [ai-factory](), [ai-networking](), [data-center](), [data-center-cloud](), [ethernet](), [generative-ai](), [infrastructure](), [internet-communications](), [latency](), [low-latency](), [networking-communications](), [nvidia](), [resilience](), [spectrum-x]() ### AI overview This article explains how the growth of distributed generative AI training has made scale-out networking a major data center performance bottleneck. It contrasts traditional Ethernet with NVIDIA Spectrum-X Ethernet, a hardware-accelerated architecture that co-designs switches and host-side NICs to provide predictable low latency, high fabric utilization, and resilience for large AI workloads. It also introduces Spectrum-X Multiplane technology and describes how AI collective communication exposes limitations in conventional ECMP routing and congestion handling. ### Source excerpt The massive growth of generative AI has fundamentally altered data center design. As distributed model training scales to span hundreds of thousands of GPUs,... ## ESPHome 2026.8.0: Bluetooth on more chips than ever DevFeed: [ESPHome 2026.8.0: Bluetooth on more chips than ever]() Original publisher: [Read original article]() Author: Jesse Hills Published: 2026-08-19T00:00:00Z Content type: release Language: en Sources: [ESPHome - Smart Home Made Simple - Blog]() Topics: [esphome](), [Bluetooth](), [networking](), [Raspberry Pi](), [ESP32](), [Ethernet](), [Modbus](), [ESP8266](), [Lvgl]() Tags: [bluetooth](), [esp32](), [esp8266](), [esphome](), [ethernet](), [lvgl](), [modbus](), [networking](), [raspberry-pi](), [release](), [releases]() ### AI overview ESPHome 2026.8.0 expands Bluetooth support beyond ESP32 through a platform-neutral BLE layer, adds Bluetooth Proxy support for more chips and Raspberry Pi Pico W, and introduces faster builds, combined Ethernet and WiFi configuration, Modbus changes, OTA signature verification, and other device and builder improvements. ### Source excerpt ESPHome 2026.8.0 brings Bluetooth to more chips, dramatically faster builds, Ethernet and WiFi together, a major Modbus overhaul, and more. ## Wireshark: analiza tráfico de red visualmente DevFeed: [Wireshark: analiza tráfico de red visualmente]() Original publisher: [Read original article]() Author: Antonio Pérez Published: 2026-08-02T00:00:00Z Content type: tutorial Language: es Sources: [tengoping.com]() Topics: [TCP/IP](), [Linux](), [Ethernet](), [Debian](), [Ubuntu](), [Command-line interface](), [interfaces](), [macOS](), [Windows]() Tags: [debian](), [ethernet](), [interfaces](), [linux](), [macos](), [tcp-ip](), [terminal](), [ubuntu](), [ubuntu-24-04](), [windows]() ### AI overview A practical guide to Wireshark covering installation, packet capture without running the graphical application as root, display filters, protocol-layer inspection, and TCP flow tracking. It includes real capture examples and discusses the security implications of granting capture permissions. ### Source excerpt Guía práctica de Wireshark: instalación, captura sin root, filtros de visualización, inspección de capas y seguimiento de flujos TCP con ejemplos reales. ## Introducing the J2sw MTU and Encapsulation Calculator DevFeed: [Introducing the J2sw MTU and Encapsulation Calculator]() Original publisher: [Read original article]() Author: j2sw Published: 2026-07-28T16:37:53Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [Network](), [Tool](), [Ethernet](), [VXLAN]() Tags: [calculator](), [cisco](), [ethernet](), [fragmentation](), [gre](), [headers](), [ipsec](), [ipv4](), [ipv6](), [juniper](), [mikrotik](), [mpls](), [mtu](), [network-engineering-resources](), [network-tools](), [network-troubleshooting](), [overhead](), [payload](), [pppoe](), [vlan](), [vxlan]() ### AI overview The article introduces the J2SW MTU and Encapsulation Calculator, which estimates inner IP MTU and required underlay MTU for combinations of PPPoE, GRE, VLAN, MPLS, VXLAN, and other encapsulations. It explains how Layer 2 tags affect Ethernet frame size separately from IP MTU and describes overhead calculations, including cases where fragmentation can be avoided. ### Source excerpt Ever wondered what the effects of different combinations of PPPoE, GRE, and others have on the MTU of a packet? I am excited to announce the first of many J2 Network tools: the J2SW MTU and Encapsulation Calculator. You select the service MTU and the encapsulation used on the path. The calculator then works out ... Read more The post Introducing the J2sw MTU and Encapsulation Calculator appeared first on Justin Wilson (j2sw). ## VLANs explicadas: segmenta tu red DevFeed: [VLANs explicadas: segmenta tu red]() Original publisher: [Read original article]() Author: Antonio Pérez Published: 2026-07-27T00:00:00Z Content type: tutorial Language: es Sources: [tengoping.com]() Topics: [Homelab](), [Ethernet](), [Linux](), [interfaces](), [Hardware]() Tags: [ethernet](), [homelab](), [interfaces](), [lan](), [linux](), [vlan]() ### AI overview This tutorial explains how VLANs divide one physical network into separate logical networks. It covers 802.1Q tagging, VLAN IDs, access and trunk ports, PVIDs, and configuring VLANs on managed switches and Linux for homelab network segmentation. ### Source excerpt Qué son las VLANs y el etiquetado 802.1Q, cómo configurarlas en un switch gestionado y en Linux, y cuándo merece la pena segmentar tu red de homelab. ## What Cables Do You Really Need for Raspberry Pi? (Full Guide) DevFeed: [What Cables Do You Really Need for Raspberry Pi? (Full Guide)]() Original publisher: [Read original article]() Author: Karen Rangi Published: 2026-07-25T05:00:00Z Content type: tutorial Language: en Sources: [RaspberryTips]() Topics: [Raspberry Pi](), [Ethernet](), [USB]() Tags: [accessories](), [beginner-s-guides](), [camera](), [ethernet](), [guide](), [network](), [pi-4](), [raspberry-pi](), [usb]() ### AI overview A practical guide to Raspberry Pi cables explains that a suitable power supply is essential, while display, Ethernet, camera, audio, and USB cables depend on the model, setup, and accessories. It also notes that headless installation can avoid the need for a permanently attached display. ### Source excerpt After using Raspberry Pi boards for years, I've learned that you don't need nearly as many cables as most starter kits suggest. A few are essential, some depend on your project, and several are easy to skip. I'll help you buy only what you actually need. Every Raspberry Pi needs a suitable power supply. A... ## What Is IPoE? DevFeed: [What Is IPoE?]() Original publisher: [Read original article]() Author: j2sw Published: 2026-07-24T12:15:00Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [DHCP](), [Ethernet](), [Networks](), [Protocol (disambiguation)](), [gateway]() Tags: [broadband](), [dhcp](), [dns](), [ethernet](), [ipoe](), [mtu](), [network-operations](), [pppoe](), [router](), [vlan]() ### AI overview This article explains IPoE, or IP over Ethernet, as an access model in which a customer router uses DHCP to obtain an IP address and network configuration directly, without establishing a PPPoE session or storing login credentials. It describes DHCP relay and Broadband Network Gateway processing and outlines subscriber-identification methods such as VLANs, access ports, DHCP Option 82, circuit identifiers, ONT details, and MAC authentication. ### Source excerpt 4 minutes read time.Many of us ISP veterans are familiar with Point-to-Point Protocol over Ethernet (PPPoE), also referred to as Triple P O E. PPPoE is showing its age. It showed its age 15 years ago. DHCP was the simple fix for modern networks. It had less overhead and was simple. Now along comes IPoE. ... Read more The post What Is IPoE? appeared first on Justin Wilson (j2sw). ## AMD Instinct MI455X GPU Detailed for Rack-Scale AI Deployments DevFeed: [AMD Instinct MI455X GPU Detailed for Rack-Scale AI Deployments]() Original publisher: [Read original article]() Author: George Cozma Published: 2026-07-23T17:37:10Z Content type: article Language: en Sources: [Chips and Cheese]() Topics: [GPU](), [Artificial Intelligence](), [networking](), [NVLink](), [systems](), [Ethernet](), [SOC](), [tsmc]() Tags: [2026](), [ai](), [architecture](), [article](), [capacity](), [communication](), [compute](), [ethernet](), [gpu](), [memory](), [networking](), [performance](), [processors](), [scale](), [soc](), [tsmc]() ### AI overview The article examines AMD's Instinct MI455X, a CDNA5 GPU designed for rack-scale AI deployments. It describes the Helios rack-scale system, UALink over Ethernet networking, compute and memory specifications, and changes to the WGP, register-file, and matrix-unit designs. ### Source excerpt Editor's Note (7/25/2026): The article has been edited with more information about the L2 behavior along with the bandwidth of the die to die interface. ## How Passive Optical Networks (PON) Work DevFeed: [How Passive Optical Networks (PON) Work]() Original publisher: [Read original article]() Author: j2sw Published: 2026-07-22T12:35:00Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [Networks](), [gpon](), [Internet](), [Ethernet](), [gateway](), [Security](), [Deployment]() Tags: [ethernet](), [fiber](), [ftth](), [gateway](), [gpon](), [internet](), [internet-architecture](), [isp](), [networks](), [passive-optical-network](), [pon](), [providers](), [provisioning](), [router](), [security](), [xgs-pon]() ### AI overview This tutorial explains how Passive Optical Networks (PON) deliver residential fiber Internet. It describes the roles of the OLT, passive optical splitters, ONTs, and the customer router or gateway, including how providers share feeder fiber among subscribers and provision authorized ONTs. ### Source excerpt If you've spent any time looking into fiber Internet, you've probably run across terms like GPON, XGS-PON, OLT, and ONT. These are all parts of what's called a Passive Optical Network, or PON. Most residential fiber providers use PON because it lets them connect alot of homes without having to pull a separate fiber from ... Read more The post How Passive Optical Networks (PON) Work appeared first on Justin Wilson (j2sw). ## Worth Reading 071926 DevFeed: [Worth Reading 071926]() Original publisher: [Read original article]() Author: Russ Published: 2026-07-19T12:25:09Z Content type: article Language: en Sources: [rule 11 reader]() Topics: [Ethernet](), [Language models](), [data centers](), [Server](), [WebRTC](), [Streaming](), [Web](), [idc](), [Google Meet]() Tags: [data-centers](), [ethernet](), [idc](), [model](), [server](), [video](), [web](), [webrtc](), [worth-reading]() ### AI overview A developer-oriented roundup covering Ethernet switch and server-market statistics, the need to treat language-model output as untrusted, video delivery technologies including WebRTC and DASH, AI-mediated content consumption, and the potential costs and environmental effects of data centers in low Earth orbit. ### Source excerpt In fact, in Q1 2026, the Ethernet switch market grew faster than the overall server market did according to the latest statistics from IDC. We are tempted to treat a capable language model as a knowledgeable colleague whose conclusions we can accept. It is more accurate, and more useful, to treat it as an untrusted component that produces plausible output which must be checked before it is relied upon. In my view, MoQ occupies a middle ground between WebRTC (which is used for lots of video conferencing applications like Google Meet) and DASH (Dynamic Adaptive Streaming over HTTP) which powers most entertainment video streaming on the web. Content consumption is detached from the website itself, as users rely on AI-driven systems to aggregate, summarize and contextualize information without visiting the original source. Instead of researching across multiple tabs, readers ask an AI system to do the work for them. Shifting data centers from earth to space has become an alternative touted as solving concerns without generating new ones. In sun synchronous, low Earth orbit, orbiting data centers ("ODCs") may have comparatively less environmental impact and lower operating costs. ## What Is NBASE-T? More Bandwidth Without Replacing Your Cabling DevFeed: [What Is NBASE-T? More Bandwidth Without Replacing Your Cabling]() Original publisher: [Read original article]() Author: j2sw Published: 2026-06-25T03:44:25Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [Ethernet](), [Network](), [Hardware](), [Wi-Fi 7]() Tags: [2-5g-ethernet](), [cabling](), [cat5e](), [cat6](), [ethernet](), [hardware](), [interface](), [nbase-t](), [network](), [network-operations](), [speed](), [structured-cabling](), [use-cases](), [wi-fi-7](), [wifi-7]() ### AI overview This tutorial explains how NBASE-T provides 2.5 Gbps and 5 Gbps Ethernet speeds between traditional Gigabit and 10 Gigabit Ethernet over existing copper cabling. It covers auto-negotiation, RJ-45 compatibility, and use cases such as Wi-Fi access points and security cameras. ### Source excerpt NBASE-T bridges the gap between 1 Gigabit and 10 Gigabit Ethernet by supporting 2.5 Gbps and 5 Gbps over existing copper cabling. Learn how it works, where it makes sense, and what network engineers should look for when deploying and troubleshooting multi-gigabit links. The post What Is NBASE-T? More Bandwidth Without Replacing Your Cabling appeared first on Justin Wilson (j2sw). ## AES67 audio-over-IP on the ESP32-P4 DevFeed: [AES67 audio-over-IP on the ESP32-P4]() Original publisher: [Read original article]() Author: John Lee Published: 2026-06-24T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32-P4](), [ESP-IDF](), [Ethernet](), [Latency](), [RISC-V](), [Protocol (disambiguation)](), [Toit](), [Raspberry Pi]() Tags: [aes67](), [audio](), [blog](), [esp-idf](), [esp32](), [esp32-p4](), [ethernet](), [hardware](), [ip](), [latency](), [low-latency](), [network](), [networking](), [protocol](), [ptp](), [ravenna](), [risc-v](), [rtp](), [sync]() ### AI overview This article describes implementing a working, PTP-synchronized AES67/RAVENNA audio endpoint on the ESP32-P4 as an ESP-IDF component. It covers clock synchronization, low-latency packet reception, and I2S playout, reporting best-case end-to-end latency of about 0.7 ms and noting which parts are solid or still limited. ### Source excerpt AES67/RAVENNA is the audio transport behind a lot of broadcast and live-sound infrastructure, and it normally runs on dedicated silicon or Linux boxes. This article is about getting a working, PTP-synchronized AES67 endpoint onto an ESP32-P4 -- how the clock sync, the low-latency receive path, and the I2S playout fit together, what the measured latency is, and where the edges are. ## June 2026 Updates #2 for XCP-ng 8.3 LTS DevFeed: [June 2026 Updates #2 for XCP-ng 8.3 LTS]() Original publisher: [Read original article]() Author: Philippe Coval Published: 2026-06-23T17:00:15Z Content type: release Language: en Sources: [XCP-ng Blog]() Topics: [Security](), [Vulnerabilities](), [Kernel](), [x86](), [Ethernet]() Tags: [2026](), [bug-fixes](), [ethernet](), [kernel](), [lts](), [release](), [security](), [update](), [updates](), [vulnerabilities](), [vulnerability](), [x86]() ### AI overview This release batch provides security and maintenance updates for XCP-ng 8.3 LTS. It fixes vulnerabilities in Xen, the Linux kernel, and the optional lldpd package, including issues that could cause denial of service, privilege escalation, information leaks, or a buffer over-read. The update also includes version updates, bug fixes, improvements, and a fix included for alignment with security standards. ### Source excerpt This release batch contains security fixes for Xen and kernel as well as version updates, bug fixes and some improvements. The fixed vulnerabilities are not considered critical and are fixed as defence-in-depth. ## Fiber Optic Cable Colors Explained: Yellow, Orange, Aqua, Green, and More DevFeed: [Fiber Optic Cable Colors Explained: Yellow, Orange, Aqua, Green, and More]() Original publisher: [Read original article]() Author: j2sw Published: 2026-06-16T13:03:00Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [datacenter](), [Networks](), [Ethernet]() Tags: [color](), [data-centers](), [ethernet](), [fiber](), [fiber-colors](), [multi-mode](), [network](), [network-operations](), [single-mode](), [upc](), [yellow]() ### AI overview This article explains how fiber-optic patch-cable jacket colors commonly indicate fiber types, supported wavelengths, or connector styles. It describes yellow single-mode fiber, orange OM1 and OM2 multimode fiber, and aqua OM3 and OM4 multimode fiber, while noting that color improves identification and troubleshooting but does not affect light transmission. ### Source excerpt Fiber optic patch cables come in several colors, each helping identify the fiber type or connector style inside the network. Learn what yellow, orange, aqua, lime green, blue, and green fiber cables typically represent in data centers, ISPs, and telecommunications networks. The post Fiber Optic Cable Colors Explained: Yellow, Orange, Aqua, Green, and More appeared first on Justin Wilson (j2sw). ## What PoE+++ Is and Why High-Power Ethernet Matters DevFeed: [What PoE+++ Is and Why High-Power Ethernet Matters]() Original publisher: [Read original article]() Author: j2sw Published: 2026-06-10T04:56:41Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [Ethernet](), [networking](), [Wi-Fi](), [Digital signage](), [clients]() Tags: [cameras](), [cooling](), [ethernet](), [heat](), [it-operations](), [network-operations](), [networking](), [poe](), [power](), [usb](), [wi-fi-6](), [wireless]() ### AI overview This article explains PoE+++ as a common reference to IEEE 802.3bt Type 3 or Type 4, which can deliver about 60 to 90 watts over all four Ethernet pairs. It describes how higher power enables devices such as Wi-Fi access points, PTZ cameras, digital signage, and thin clients, while increasing the importance of cable quality, heat management, switch cooling, and overall PoE budgets. ### Source excerpt Learn what PoE+++ is, how 802.3bt increases Ethernet power delivery, and why high-wattage PoE matters for Wi-Fi, cameras, switches, and ISP deployments. The post What PoE+++ Is and Why High-Power Ethernet Matters appeared first on Justin Wilson (j2sw). ## Ten Years of ITNOG DevFeed: [Ten Years of ITNOG]() Original publisher: [Read original article]() Published: 2026-04-22T05:25:00Z Content type: opinion Language: en Sources: [ipSpace.net blog]() Topics: [networking](), [VXLAN](), [BGP](), [evpn](), [5G](), [Ethernet](), [Latency]() Tags: [5g](), [bgp](), [ethernet](), [evpn](), [latency](), [networking](), [sharding](), [threading](), [vxlan]() ### AI overview A personal recap of ITNOG 10 in Bologna highlights the event's networking presentations, including VXLAN-based 5G-to-Ethernet services, security functions in EVPN/VXLAN, BGP routing optimization for 26 million paths, and hollow-core fiber technology. ### Source excerpt I spent the last two days in Bologna at ITNOG 10 in the excellent company of Italian networking engineers (many of them personal friends) and a few guests from around the world. As always, the organizers and the program committee didn't disappoint - it was a smoothly organized, lovely event full of interesting presentations. Thanks a million to everyone involved; I'll definitely be back! Now for the highlights, starting with the ultimate catnip for the differently attentive: running two presentations in parallel on the same screen with the soundtrack distributed via headphones. I've never seen anything like that, and while it looked weird (I have no idea how the presenters took it), it turned out to be very useful, as you could easily tune out AI-washing presentations and switch to something more interesting. On the other hand, you could be faced with a hard choice of having to select one of two excellent presentations: Read more ... ## The Tale of Two EVPN/MPLS Encapsulations DevFeed: [The Tale of Two EVPN/MPLS Encapsulations]() Original publisher: [Read original article]() Published: 2026-03-04T07:09:00Z Content type: article Language: en Sources: [ipSpace.net blog]() Topics: [evpn](), [Testing](), [BGP](), [Cisco](), [Ethernet]() Tags: [bgp](), [cisco](), [deep-dive](), [ethernet](), [evpn](), [mpls](), [test](), [testing]() ### AI overview A technical investigation of EVPN/MPLS netlab integration tests compares Arista EOS and Cisco IOS/XE encapsulations. Arista EOS passes the bridging test, while Cisco IOS/XE establishes the control plane but encounters ARP failures that packet captures trace to differing MPLS payload handling and control-word expectations. ### Source excerpt I decided it was high time to create EVPN/MPLS netlab integration tests and wanted to use the same approach I used for the EVPN/VXLAN ones: One of the PE-devices is the device we want to test The other PE-device is a device that is known to work (ideally, an FRRouting container). Bonus points if the other PE-device can generate operational data in JSON format. Using a device for which we already have a validation plugin is close to perfection. Add a P-router in the middle because MPLS. Attach some hosts to the two PE-devices (we're testing two MAC-VRFs in the final version of the test) After validating everything that can reasonably be validated (OSPF session, IBGP session, EVPN AF on IBGP session), do the end-to-end pings and hope for the best. This is the graph netlab created from the lab topology: Read more ... [Next page]()