Packet Path — Free Network Engineering Tools & Guides

Skip to content

Home Tools Guides Tracks Gear About

Home Tools Guides Tracks Gear About

Packet Path

Free network engineering tools and deep, practical guides — from your first subnet to low-latency production networks.

Tools

Subnet calculator
Bandwidth-delay calculator
Subnet quiz
SLA & downtime
DC capacity planner
Optical link budget
Tick-to-trade latency
PTP timing budget
PTP/SyncE timing simulator
ECMP hash visualizer
ACL rule analyzer
Network config verifier

Learn

All guides
Career tracks
Lab gear
About

Popular

BGP explained
Subnetting cheatsheet
Build a home lab
CCNA vs Network+

© 2026 Packet PathTools run entirely in your browser — no sign-up, no data leaves this page.