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VLAN

84 articles · Page 1 of 1
Raymond Ops
Raymond Ops
Sep 2, 2026 · Operations

Essential Network Basics for Ops: IP, Subnet Mask, and Gateway Explained in One Go

This guide walks operations engineers through IP addressing, binary‑decimal conversion, classful and private address ranges, subnet masks and CIDR notation, gateway functions, VLAN concepts, routing tables, DNS basics, Docker/Kubernetes networking, firewall rules, and practical troubleshooting steps, all illustrated with concrete commands and examples.

DNSDockerIP
0 likes · 36 min read
Essential Network Basics for Ops: IP, Subnet Mask, and Gateway Explained in One Go
AI Agent Super App
AI Agent Super App
Jul 3, 2026 · Operations

How to Build an Enterprise LAN from Scratch: Switches, Firewalls, APs, and Controllers Explained

This guide walks you through planning and deploying an enterprise LAN from the ground up, covering device roles, VLAN and IP design, switch configuration (access, trunk, layer‑3), firewall routing, NAT, security policies, wireless AP/Controller setup, and provides practical checklists and example office and campus layouts.

FirewallsLANSwitches
0 likes · 13 min read
How to Build an Enterprise LAN from Scratch: Switches, Firewalls, APs, and Controllers Explained
Java Tech Enthusiast
Java Tech Enthusiast
Jun 29, 2026 · Fundamentals

When to Choose Layer 2 vs Layer 3 Switches for Your Network

Layer 2 switches operate at the data‑link layer, forwarding frames by MAC address within a single broadcast domain, while Layer 3 switches add IP routing capabilities for inter‑VLAN traffic; the article explains their roles, compares features, and outlines scenarios where each is the optimal choice.

Layer2Layer3NetworkDesign
0 likes · 8 min read
When to Choose Layer 2 vs Layer 3 Switches for Your Network
MaGe Linux Operations
MaGe Linux Operations
May 31, 2026 · Fundamentals

Essential Network Basics for Ops: IP Addresses, Subnet Masks, and Gateways Explained

This guide walks operations engineers through core networking concepts—including IP address structure, binary‑decimal conversion, private address ranges, subnet masks, CIDR notation, gateway functions, VLAN isolation, routing tables, DNS resolution, Docker/Kubernetes networking, and firewall configuration—while providing concrete command‑line examples and step‑by‑step troubleshooting workflows.

DockerIP addressingKubernetes
0 likes · 35 min read
Essential Network Basics for Ops: IP Addresses, Subnet Masks, and Gateways Explained
Linux Tech Enthusiast
Linux Tech Enthusiast
May 12, 2026 · Fundamentals

30 Comprehensive Network Fundamentals Mind Maps

This article compiles a complete set of 30 network‑foundation mind maps, covering everything from the TCP/IP protocol stack and addressing to routing protocols, VLANs, IPv6, and command‑line basics, allowing readers to visually grasp and later recreate core networking concepts.

IPv6TCP/IPVLAN
0 likes · 4 min read
30 Comprehensive Network Fundamentals Mind Maps
Efficient Ops
Efficient Ops
Sep 24, 2025 · Fundamentals

What Is a VLAN and How Do Routers, Switches, and Gateways Work?

This article explains VLAN concepts, using classroom analogies, then details single‑arm routing, layer‑3 switches, gateways, DNS, MAC addresses, and subnet masks, illustrating how network segmentation improves efficiency and how devices communicate across different broadcast domains.

DNSLayer 3 SwitchMAC address
0 likes · 13 min read
What Is a VLAN and How Do Routers, Switches, and Gateways Work?
Liangxu Linux
Liangxu Linux
Mar 11, 2025 · Operations

Master Linux ‘ip’ Command: Essential Network Management Operations

This guide explains the Linux ip command—its syntax, how to view and control network interfaces, configure IP addresses, manage routes, set up VLANs, and handle ARP entries—providing practical examples that enable efficient network administration and troubleshooting on Linux systems.

ARPLinuxNetwork Management
0 likes · 6 min read
Master Linux ‘ip’ Command: Essential Network Management Operations
Efficient Ops
Efficient Ops
Dec 15, 2024 · Fundamentals

Unlocking Network Basics: How VLANs, Routers, and DNS Shape Modern LANs

This article explains the fundamentals of VLANs, single‑arm routing, layer‑3 switches, gateways, DNS, MAC addresses, and subnet masks, using clear analogies and examples to show how network segmentation and routing enable efficient communication within and between local networks.

DNSMAC addressVLAN
0 likes · 11 min read
Unlocking Network Basics: How VLANs, Routers, and DNS Shape Modern LANs
Efficient Ops
Efficient Ops
May 5, 2024 · Fundamentals

Master Computer Network Fundamentals with 38 Comprehensive Mind Maps

This article presents a curated collection of 38 detailed mind maps that systematically cover essential computer network concepts—from transmission media and Ethernet frames to IP addressing, routing protocols, VLANs, and VPNs—helping readers visualize and master the fundamentals efficiently.

Computer NetworksIPv6VLAN
0 likes · 5 min read
Master Computer Network Fundamentals with 38 Comprehensive Mind Maps
Open Source Linux
Open Source Linux
Oct 9, 2023 · Fundamentals

Master VLANs, Routing, Gateways, DNS, MAC & Subnet Masks

This article explains the fundamentals of virtual LANs, how single‑arm routing and layer‑3 switches enable inter‑VLAN communication, the role of gateways, DNS, MAC addresses, and subnet masks, using clear analogies to help beginners grasp essential networking concepts.

MAC addressVLANsubnet mask
0 likes · 11 min read
Master VLANs, Routing, Gateways, DNS, MAC & Subnet Masks
Open Source Linux
Open Source Linux
Jul 25, 2023 · Fundamentals

Master VLANs: From Broadcast Domains to Multi-Layer Switching Explained

This comprehensive guide walks you through VLAN fundamentals, including broadcast domain concepts, VLAN creation mechanisms, access and trunk links, static and dynamic VLAN types, inter-VLAN routing with routers and layer‑3 switches, and performance‑boosting techniques, providing a complete roadmap for designing and managing modern LANs.

Broadcast DomainVLANnetwork design
0 likes · 34 min read
Master VLANs: From Broadcast Domains to Multi-Layer Switching Explained
Open Source Linux
Open Source Linux
May 30, 2023 · Fundamentals

Understanding Layer 2 vs Layer 3 Switches, ARP, and VLANs

This article explains how Layer 2 switches forward frames using MAC addresses, how Layer 3 switches add IP routing, the role of ARP in learning MAC addresses, the impact of collisions and broadcast domains, and how VLANs and switch port configurations solve these networking challenges.

ARPLayer2 SwitchLayer3 Switch
0 likes · 15 min read
Understanding Layer 2 vs Layer 3 Switches, ARP, and VLANs
Practical DevOps Architecture
Practical DevOps Architecture
Feb 13, 2023 · Fundamentals

H3C Enterprise Campus Network Video Course List

This article provides a comprehensive list of 54 H3C campus‑network tutorial videos covering VLAN, STP/RSTP/MSTP, link aggregation, SmartLink, RRPP, VRRP, IRF, multicast, IGMP, AAA, port access control, SSH, SNMP, LLDP, NTP and a full lab, useful for network engineers seeking practical knowledge.

Campus NetworkH3CSTP
0 likes · 3 min read
H3C Enterprise Campus Network Video Course List
Open Source Linux
Open Source Linux
Aug 23, 2022 · Operations

Isolating Users in the Same VLAN and Enabling Partial VLAN Connectivity

This guide walks through three practical scenarios for VLAN isolation: using port isolation to separate users within the same VLAN, employing MUX VLAN to achieve selective inter‑VLAN communication and isolation, and applying ACL‑based flow policies to block specific VLANs or individual users while preserving overall connectivity.

ACLFlow PolicyMUX VLAN
0 likes · 8 min read
Isolating Users in the Same VLAN and Enabling Partial VLAN Connectivity
Efficient Ops
Efficient Ops
Aug 14, 2022 · Fundamentals

Why VLANs Matter: Simplifying Networks with Virtual LANs, Gateways, and DNS

This article explains the concept of VLANs, how they segment broadcast domains like classroom groups, describes single‑arm routing and layer‑3 switches for inter‑VLAN communication, and covers essential networking components such as gateways, DNS, MAC addresses, IP addressing, and subnet masks, illustrating each with clear analogies.

DNSMAC addressVLAN
0 likes · 12 min read
Why VLANs Matter: Simplifying Networks with Virtual LANs, Gateways, and DNS
Efficient Ops
Efficient Ops
May 9, 2022 · Fundamentals

Why VLANs Matter: Simplifying Networks with Virtual LANs, Gateways, and DNS

This article explains the concept of VLANs, illustrates how they segment networks like classroom groups, describes single‑arm routing and layer‑3 switches for inter‑VLAN communication, and covers related fundamentals such as gateways, DNS, MAC addresses, and subnet masks, providing clear analogies and diagrams for beginners.

DNSMAC addressVLAN
0 likes · 12 min read
Why VLANs Matter: Simplifying Networks with Virtual LANs, Gateways, and DNS
Open Source Linux
Open Source Linux
Feb 13, 2022 · Fundamentals

How I Fixed My Home Gigabit Broadband: Real-World Troubleshooting & Upgrade Guide

During a post‑New‑Year visit home, a communications engineer discovers his family's gigabit broadband is underperforming, diagnoses wiring, ISP bundling, and router issues, and shares a step‑by‑step guide to restore full‑speed wired and Wi‑Fi connectivity while also reviewing 5G coverage and TV streaming options.

5GTV streamingVLAN
0 likes · 12 min read
How I Fixed My Home Gigabit Broadband: Real-World Troubleshooting & Upgrade Guide
Open Source Linux
Open Source Linux
Jan 13, 2022 · Fundamentals

VLAN vs QinQ vs VXLAN: Which Virtual LAN Technology Wins?

This article explains the fundamentals of VLAN, QinQ, and VXLAN, compares their tagging methods, scalability, and use cases, and helps readers understand which virtual LAN technology best fits modern network and cloud environments.

Network VirtualizationQinQVLAN
0 likes · 9 min read
VLAN vs QinQ vs VXLAN: Which Virtual LAN Technology Wins?
Cloud Native Technology Community
Cloud Native Technology Community
Jan 5, 2022 · Operations

Understanding Open vSwitch Flow Tables: Concepts, Match Fields, Actions, and Practical Commands

This article, the second part of the “Open vSwitch Full Analysis” series, explains the structure and operation of OVS flow tables, detailing match fields, actions, priorities, timeouts, and provides practical ovs‑ofctl command examples for configuring flows, VLANs, and tunnels such as VXLAN and GRE.

Flow TableGREOpen vSwitch
0 likes · 16 min read
Understanding Open vSwitch Flow Tables: Concepts, Match Fields, Actions, and Practical Commands
Cloud Native Technology Community
Cloud Native Technology Community
Jan 5, 2022 · Cloud Native

Implementing Flat, VLAN, and VXLAN Networks with Open vSwitch and Docker

This article demonstrates how to build flat, VLAN, and VXLAN networking topologies using Open vSwitch integrated with Docker containers, covering architecture concepts, required host configurations, step‑by‑step command sequences, and connectivity testing across single‑host and multi‑host environments.

DockerNetwork VirtualizationOpen vSwitch
0 likes · 12 min read
Implementing Flat, VLAN, and VXLAN Networks with Open vSwitch and Docker
Open Source Linux
Open Source Linux
Dec 21, 2021 · Fundamentals

Why VLANs Matter: Unlocking Network Efficiency and Security

This article explains VLAN fundamentals, why they are needed, how they differ from subnets, the role of VLAN tags and IDs, various interface types, practical deployment scenarios, related protocols, and the challenges VLANs face in modern cloud environments.

Layer 2VLANVXLAN
0 likes · 12 min read
Why VLANs Matter: Unlocking Network Efficiency and Security
Open Source Linux
Open Source Linux
Sep 26, 2021 · Fundamentals

How Do Network Switches Work? From Layer 2 to Layer 4 Explained

This article explains the operating principles, main functions, characteristics, and classifications of Ethernet switches, covering layer‑2 learning and forwarding, layer‑3 routing, layer‑4 load‑balancing, and the technical criteria used to evaluate switch performance.

Layer 2Layer 3MAC learning
0 likes · 17 min read
How Do Network Switches Work? From Layer 2 to Layer 4 Explained
Programmer DD
Programmer DD
Sep 4, 2021 · Operations

How a Single Ethernet Cable Triggered a Dorm‑Wide Network Storm

A college freshman discovered that by repurposing a single Ethernet cable and cleverly wiring it through his dorm room, he could create a broadcast storm that shut down the entire building's network, illustrating the dangers of looped LAN connections and the importance of proper VLAN and STP configuration.

DIY networkingLAN hackSTP
0 likes · 9 min read
How a Single Ethernet Cable Triggered a Dorm‑Wide Network Storm
Open Source Linux
Open Source Linux
Mar 27, 2021 · Operations

Master Huawei Switch Configuration: From VLAN Setup to Link Aggregation

This guide walks you through essential Huawei switch commands, covering user and view modes, VLAN creation, port link types, batch operations, initial login procedures, service activation, link aggregation, DHCP setup, and flow‑control configuration, all illustrated with step‑by‑step screenshots.

HuaweiVLANnetwork
0 likes · 9 min read
Master Huawei Switch Configuration: From VLAN Setup to Link Aggregation
Architects' Tech Alliance
Architects' Tech Alliance
Jan 26, 2021 · Fundamentals

Understanding Network Switches: Definitions, Functions, Classifications, and Management Features

This article provides a comprehensive overview of network switches, covering their definition, MAC‑based operation, port expansion, classification by manageability and OSI layer, various management methods (Web, CLI, SNMP), product specifications, application scenarios, and key features such as VLAN, port isolation, aggregation, loop detection, ACL, ARP protection, DHCP services, and routing capabilities.

ACLDHCPLayer 2
0 likes · 9 min read
Understanding Network Switches: Definitions, Functions, Classifications, and Management Features
Liangxu Linux
Liangxu Linux
Dec 14, 2020 · Operations

How to Assign Multiple VLAN IPs on a Single Linux NIC (CentOS/RHEL)

This guide explains how to configure multiple VLAN‑tagged interfaces on a single Linux network card in CentOS/RHEL, covering kernel module loading, creating VLAN interfaces with ip, assigning IP addresses, and persisting the settings via ifcfg files so they survive reboots.

CentOSIPLinux
0 likes · 5 min read
How to Assign Multiple VLAN IPs on a Single Linux NIC (CentOS/RHEL)
Open Source Linux
Open Source Linux
Aug 28, 2020 · Fundamentals

Master Switch Basics: Types, Performance Metrics, VLANs and More

This article offers a comprehensive overview of network switches, detailing their classifications, performance indicators, interface and link methods, virtual LANs, multilayer switching, and product introductions, providing essential knowledge for anyone studying networking fundamentals.

HardwareNetwork SwitchVLAN
0 likes · 1 min read
Master Switch Basics: Types, Performance Metrics, VLANs and More
Architects' Tech Alliance
Architects' Tech Alliance
Aug 26, 2020 · Fundamentals

Fundamentals of Network Switches: Overview, Types, Performance Metrics, Interfaces, VLANs, and Multilayer Switching

This article provides a comprehensive overview of network switches, covering their basic concepts, classifications, performance indicators, interface and link methods, virtual LANs, multilayer switching, and product introductions, while also including promotional information for related technical e‑books.

IT infrastructureVLANmultilayer switching
0 likes · 2 min read
Fundamentals of Network Switches: Overview, Types, Performance Metrics, Interfaces, VLANs, and Multilayer Switching
Liangxu Linux
Liangxu Linux
Aug 16, 2020 · Fundamentals

A Beginner’s Guide to VLANs, Gateways, DNS, and Subnet Masks

This article explains networking fundamentals such as VLANs, single‑arm routing, layer‑3 switches, gateways, DNS, MAC addresses, IP addressing, and subnet masks, using simple analogies and examples to illustrate how devices communicate across different network segments.

DNSLayer 3 SwitchNetworking Basics
0 likes · 14 min read
A Beginner’s Guide to VLANs, Gateways, DNS, and Subnet Masks
Architects' Tech Alliance
Architects' Tech Alliance
Jun 11, 2020 · Operations

Understanding Switches: Functions, Types, and Management Techniques

This article provides a comprehensive overview of network switches, covering their definition, core functions, port and distance expansion, classification by manageability and OSI layer, various management methods (Web, CLI, SNMP), key features such as VLAN, ACL, routing, and practical deployment scenarios.

ACLVLANmanagement
0 likes · 10 min read
Understanding Switches: Functions, Types, and Management Techniques
dbaplus Community
dbaplus Community
Aug 26, 2019 · Operations

Boost Network Transparency: Automated Monitoring and Ops Tools for SREs

Network engineers often go unnoticed until outages, so this guide explains how to make network status transparent through device availability checks, log and traffic monitoring, SNMP error tracking, and automation scripts—leveraging Python, syslog servers, and northbound APIs—to reduce troubleshooting time and prevent incidents.

PythonSNMPSRE
0 likes · 11 min read
Boost Network Transparency: Automated Monitoring and Ops Tools for SREs
Architects' Tech Alliance
Architects' Tech Alliance
Jan 6, 2019 · Fundamentals

Mastering Ethernet: Key Switch Features, Standards, and VLAN Essentials

This article provides a comprehensive overview of Ethernet switching, covering data‑link layer functions, IEEE 802.3 family standards, duplex modes, MAC/IP addressing, auto‑negotiation, flow‑control mechanisms, VLAN concepts, broadcast‑storm mitigation, trunking, and mainframe storage interfaces such as ESCON and FICON.

ESCONEthernetFICON
0 likes · 17 min read
Mastering Ethernet: Key Switch Features, Standards, and VLAN Essentials
Architects' Tech Alliance
Architects' Tech Alliance
Jul 6, 2016 · Fundamentals

Understanding Network Flooding and Broadcast Storms: From Physical Floods to Data Center Networks

The article uses the analogy of heavy rain flooding to explain network flooding and broadcast storms, describing how Ethernet switches handle unknown frames, why loops cause endless broadcast traffic, and how VLAN segmentation and spanning‑tree protocols mitigate these issues in modern data‑center architectures.

STPVLANbroadcast storm
0 likes · 6 min read
Understanding Network Flooding and Broadcast Storms: From Physical Floods to Data Center Networks
ITPUB
ITPUB
Jun 21, 2016 · Operations

Mastering WLAN Optimization: Practical Techniques to Boost Wi‑Fi Performance

This article presents a comprehensive guide to wireless network optimization, covering signal strength standards, channel and power planning, VLAN isolation, low‑rate disabling, user rate limiting, probe response control, weak‑signal client blocking, encryption choices, and common troubleshooting scenarios.

Channel PlanningVLANWLAN
0 likes · 17 min read
Mastering WLAN Optimization: Practical Techniques to Boost Wi‑Fi Performance
Practical DevOps Architecture
Practical DevOps Architecture
Mar 10, 2016 · Operations

Configuring ACLs to Isolate VLANs on S7706 (Layer 3)

This article explains how to use ACLs on a Huawei S7706 device to prevent inter‑VLAN communication at Layer 3 by defining separate ACL numbers for each VLAN pair and applying them with traffic‑filter commands on the inbound direction of each VLAN interface.

ACLHuawei S7706Layer 3
0 likes · 3 min read
Configuring ACLs to Isolate VLANs on S7706 (Layer 3)
21CTO
21CTO
Nov 4, 2015 · Fundamentals

How a Single Ethernet Cable Triggered a Dorm‑Wide VLAN Storm

A college student recounts how a simple Ethernet cable hack caused a network-wide broadcast storm in a dormitory, exploring the underlying VLAN and STP concepts while detailing improvised hardware tricks and the resulting chaos.

DIYEthernetSTP
0 likes · 10 min read
How a Single Ethernet Cable Triggered a Dorm‑Wide VLAN Storm