{"title":"Switches","description":"\u003ch2\u003eThe Spine of Your AI Cluster\u003c\/h2\u003e\n\n\u003cp\u003eAsk any network engineer who has built an AI training cluster what they wish they'd known before they started, and most of them will say the same thing: \u003cem\u003e\"I underspecced the switch.\"\u003c\/em\u003e It's the most common and most expensive mistake in AI infrastructure design. You invest in the right GPUs, the right servers, the right storage — and then you connect them with a switch that becomes the bottleneck the moment you scale past a handful of nodes.\u003c\/p\u003e\n\n\u003cp\u003eDVUN's switch collection is built to prevent that mistake. We stock high-radix, low-latency switching platforms specifically selected for AI cluster topologies — spine-leaf architectures, fat-tree fabrics, and rail-optimized designs that keep your GPU-to-GPU communication fast and your training jobs efficient. From 25GbE access-layer switches for smaller clusters to 400GbE spine platforms for large-scale private AI clouds, every switch in this collection has been evaluated for its role in a real AI networking environment.\u003c\/p\u003e\n\n\u003ch3\u003eWhat We Look for in Every Switch We Stock\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRDMA \u0026amp; RoCEv2 Support:\u003c\/strong\u003e GPU-direct communication requires lossless Ethernet with Priority Flow Control (PFC) and ECN. We only stock switches that support this correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Cut-Through Latency:\u003c\/strong\u003e Sub-microsecond port-to-port latency for all-to-all collective operations in distributed training.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Radix Port Counts:\u003c\/strong\u003e 32-port to 128-port configurations to minimize the number of switch tiers in your fabric and reduce hop count.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible NOS Options:\u003c\/strong\u003e Support for SONiC, Cumulus, and vendor-native operating systems so you can manage your fabric with the tools your team already knows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuffer Depth for Bursty AI Traffic:\u003c\/strong\u003e AI collective operations generate highly bursty traffic patterns. Adequate shared buffer memory prevents packet drops that kill training efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot-Swap PSU \u0026amp; Fan Modules:\u003c\/strong\u003e Production AI clusters run 24\/7. Switches with redundant, hot-swappable power and cooling are non-negotiable for uptime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesigning Your Switching Fabric\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eSmall Cluster (4–16 GPU nodes):\u003c\/strong\u003e A single high-radix 100GbE switch with RoCEv2 support is typically sufficient for a non-blocking fabric. Our 32-port and 48-port 100GbE platforms are the right starting point. Pair with our \u003ca href=\"\/collections\/nics\"\u003eNICs\u003c\/a\u003e for end-to-end 100G connectivity.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLarge Cluster (32+ GPU nodes):\u003c\/strong\u003e A two-tier spine-leaf architecture with 400GbE spine switches and 100GbE leaf switches provides the bandwidth and scalability for serious training workloads. Our 400GbE spine platforms support up to 128 ports of 400GbE, giving you room to grow without a forklift upgrade. See our full \u003ca href=\"\/collections\/networking\"\u003eNetworking collection\u003c\/a\u003e for the complete fabric build.\u003c\/p\u003e\n\n\u003ch3\u003eSwitch Specifications at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePort speeds: 25GbE, 100GbE, 200GbE, 400GbE, 800GbE\u003c\/li\u003e\n\u003cli\u003ePort counts: 32 to 128 ports per switch\u003c\/li\u003e\n\u003cli\u003eSwitching capacity: up to 51.2Tbps on high-end spine platforms\u003c\/li\u003e\n\u003cli\u003eLatency: as low as 300ns cut-through on select platforms\u003c\/li\u003e\n\u003cli\u003eBuffer memory: up to 64MB shared buffer on AI-optimized platforms\u003c\/li\u003e\n\u003cli\u003eNOS support: SONiC, Cumulus Linux, vendor-native options\u003c\/li\u003e\n\u003cli\u003eManagement: SNMP, gNMI, OpenConfig, REST API\u003c\/li\u003e\n\u003cli\u003ePower: redundant hot-swap PSU, 80 PLUS Platinum efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSwitch Smart. Scale Without Regret.\u003c\/h3\u003e\n\u003cp\u003eThe switch you choose today determines the cluster you can build tomorrow. DVUN's switching portfolio gives you the headroom to grow from a pilot cluster to a production AI fabric without replacing your core infrastructure. \u003ca href=\"\/pages\/request-a-quote\"\u003eRequest a quote\u003c\/a\u003e for full fabric designs, or contact our network architecture team for a topology recommendation based on your GPU count and training workload.\u003c\/p\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/0525\/9582\/collections\/switches.png?v=1782104156","url":"https:\/\/dvun.com\/collections\/switches.oembed","provider":"DVUN","version":"1.0","type":"link"}