Startup profile · funding coverage
Cumulus Networks
Linux-based open networking OS (Cumulus Linux) for data center switches.
Stage
acquired
Status
acquired
Coverage
full
Why Cumulus Networks is interesting
Cumulus brought the Linux model to network switches — a16z seed and Series A lead before NVIDIA acquired it days after closing Mellanox in 2020.
Key facts
- Acquired by NVIDIA (May 2020): data center networking software (TechCrunch)
- a16z seed investor and Series A lead (a16z blog)
- Sequoia, Telstra Ventures among backers; ~$134M raised
- Source: https://a16z.com/bringing-the-linux-revolution-to-networking/
Investors in our directory
Funds linked from Cumulus Networks's profile — open a fund page for stage focus and related deal articles.
Industries
Infrastructure & Cloud Hardware & Semiconductors
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Related funding articles
Venture Capital Tracker pieces that cover Cumulus Networks's financing or category context.
FAQs about Cumulus Networks
Funding context and why this company shows up in venture coverage.
Cumulus Networks built Cumulus Linux — an open networking OS that runs on commodity data center switches, letting operators manage network infrastructure with Linux tools and automation instead of proprietary vendor software.
Andreessen Horowitz (see /fund/andreessen-horowitz) led the seed and Series A. Sequoia (see /fund/sequoia) also participated across rounds.
Series C was the last venture round before NVIDIA acquired the company in May 2020. Total funding reached approximately $134M.
Cumulus pioneered open networking for data centers — proving Linux could displace proprietary switch OSes and paving the way for software-defined networking at scale.
No. NVIDIA acquired Cumulus Networks in May 2020, shortly after closing its Mellanox acquisition. Cumulus Linux continues under NVIDIA.
Last updated: 2026-07-24