Interactive Network Labs

Advance advertisements and compare the neighboring devices learned through CDP and LLDP.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Follow address assignment through Discover, Offer, Request and Acknowledgment, with packet fields visible at each step.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Fail the preferred path and inspect the successor change in a simplified routing topology.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Compare switch negotiation modes and see whether an aggregated link forms.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Build rules matching source, destination, protocol and port in a browser-based packet filtering exercise.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Fail an active gateway and see the standby router take over the shared virtual address.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Step through link-local address creation, router advertisements and automatic IPv6 addressing.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Send a sample packet and follow source translation and the translation-table walkthrough.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Trace packet delivery, compare routing decisions and evaluate ordered firewall rules in three browser-based teaching exercises.

No account or installation required.

Reviewed 2026-10-30 · Provider source ↗

Explore a network canvas and structured lessons for addressing, routing and firewall concepts using a Linux-style educational command interface.

No account or local installation. Open Labs to load a lesson; loading replaces the current canvas.

Reviewed 2026-10-30 · Provider source ↗

Advance two simulated routers through adjacency states and inspect protocol messages.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗

Compare address blocks and examine the aggregate route and shared prefix bits.

Runs in the browser without registration or local installation. Optional commercial mentoring is separate.

Reviewed 2026-10-30 · Provider source ↗