Side by side

	Open-source generalist (e.g. VyOS)	Tier-one incumbent chassis	Quantum IPoE BNG
What it is	General-purpose router OS; IPoE is one module	Carrier BNG for national operators	Dedicated IPoE-only platform
IPoE focus	A corner of the codebase	One feature among hundreds	The entire product
Who integrates it	You	The vendor, at carrier scale/price	Delivered as a finished product
Cost model	Low sticker, high ops/integration cost	High hardware + per-feature licensing	Pay for IPoE capability, nothing else
Complexity	Full OS surface to patch & secure	Carrier feature bloat, needs a NOC	One clean model a lean team can run
Support	Community / self-serve	Enterprise SLA, but you're a small account	Vendor SLA, and you're a priority
Fit for a small ISP/WISP	Under-serves — you become the BNG vendor	Over-serves — you pay for a carrier network	Built for exactly this operator