Videos / Dry Run Lab
Developer tools · Oct 26, 2026 · 1:16 · @pawel7
Dry Run Lab, a sim is not proof
Paul's post says Dry Run Lab is a free, open-source network simulator in public beta. Load your real router and switch configs, try the change, and see exactly what breaks before the window. The readme says Apache 2.0. It is a beta, for a small vendor-style network. You draw the devices, paste a config, and confirm the cables it inferred. Show commands are computed on this machine by Batfish. Nothing is uploaded, and it never opens a session to a real device. Results are computed, not proof that the live network, or another software release, will match. It is not affiliated with Cisco. The post says exactly what breaks. The readme says the result is not that. This page did not load a config.
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- Dry Run Lab
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- Dry Run Lab
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- @pawel7
The player uses the public post. The film still belongs to its owner.
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