Roce · Darren Quhttps://darrenqu.net/tags/roce/Technical writing on network engineering: campus and WAN, hybrid cloud interconnect, automation and observability, and the data center fabrics — InfiniBand, RoCE, Spectrum-X — underneath GPU clusters.Hugoen-USDarren QuDarren Qu2026 Darren QuSun, 18 Jan 2026 00:00:00 +0000RoCE on NVIDIA Spectrum-X: Building Lossless Ethernet for AI Fabricshttps://darrenqu.net/ai-networking/roce-on-nvidia-spectrum-x/Sun, 18 Jan 2026 00:00:00 +0000https://darrenqu.net/ai-networking/roce-on-nvidia-spectrum-x/AI NetworkingroceWhat RoCE actually needs from the network, how PFC and ECN divide the work, and how the lossless and lossy modes are configured and verified on Cumulus Linux.