network-engineering Archives

Networking tutorial - IT technology blog

High-Speed Packet Processing with DPDK on Linux: Installation and Building Your First Network App

June 29, 2026

DPDK bypasses the Linux kernel network stack entirely, letting userspace applications process packets at line rate using poll mode drivers. This guide covers installation, hugepage configuration, NIC binding, building the l2fwd example, and production tuning tips for CPU isolation and NUMA awareness.

Networking

Configuring MPLS and LDP on Linux with FRRouting: Build a Label-Switched Network in Your HomeLab

June 13, 2026

A hands-on guide to configuring MPLS forwarding and LDP on Linux using FRRouting. Covers kernel setup, a full 3-router LSP lab, label verification commands, and practical debugging tips for HomeLab environments.

Networking

IPv4 Subnetting Tutorial: How to Calculate Subnets Without Losing Your Mind

March 6, 2026

IPv4 subnetting is the skill that separates networking theory from practical network engineering. This tutorial walks through subnet calculations, CIDR notation, VLSM, and real-world allocation strategies with Python and Linux command examples.