netcanon is an open-source tool that translates device configurations between network vendors — Cisco, Juniper, Arista, and more — and backs up configs over SSH. Paste a config, pick a target platform, and see exactly what carries over and what doesn’t.
Your session runs in an isolated instance that self-destructs within 15 minutes — usually the moment you leave. A tab left open but untouched is reclaimed after about 10 minutes of inactivity (sooner under heavy load), so keep translating to hold your session to the full 15. Nothing you paste is stored.
A fresh, isolated container just for you.
You already have the max sessions open from your network, or you’re starting too fast — close another tab or wait ~30 seconds and try again.
Something went wrong on the way to the server. It happens.
Every visitor gets a genuinely isolated instance, and there are only so many to go around. Under heavy load, an untouched session may be reclaimed early to make room. That the demo fails closed instead of quietly sharing instances is kind of the point.
Retrying automatically in 10s…
No need to wait — run it locally instead:
docker run --rm -p 8000:8000 ghcr.io/netcanon/netcanon
That’s the whole idea. Refreshing gets you a fresh instance.