{"product_id":"mellanox-sn3700-vs2f-200gbe-32-port-qsfp56-switch-used","title":"Mellanox SN3700-VS2F 200GbE 32-Port QSFP56 Switch Used","description":"\u003cp style=\"margin:14px 0 18px;padding:12px 16px;background:#f4f7fb;color:#1a1a1a;border-radius:6px;font-size:15px;line-height:1.6;\"\u003e\u003cstrong\u003eQuick answer:\u003c\/strong\u003e NVIDIA Spectrum-2 SN3700 SN3700-VS2F used, bench-tested. NVIDIA Spectrum-2 SN3700 with 32 QSFP56 ports at 200GbE, 6.4 Tb\/s switching capacity (32 × 200GbE, non-blocking), 425 ns and 42 MB buffer in 1U, running Onyx with P2C airflow.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 10px;padding:12px 16px;background:#eef8ef;border-left:4px solid #2e7d32;color:#1a1a1a;border-radius:4px;font-size:15px;line-height:1.6;\"\u003e\u003cstrong\u003eIn stock:\u003c\/strong\u003e SN3700-VS2F is in stock — availability is confirmed per part number, so send the exact model you need and we check the shelf before quoting.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 18px;padding:12px 16px;background:#f7f9fc;border:1px solid #dde5ef;border-radius:6px;font-size:15px;line-height:1.6;\"\u003e\u003cstrong\u003eNeed a quote?\u003c\/strong\u003e Message WhatsApp \u003ca href=\"https:\/\/wa.me\/8613068616914\"\u003e+86 13068616914\u003c\/a\u003e with the part number (for example SN3700-VS2F) and the quantity — we reply with price, condition notes and photos of the actual unit. No price is listed here because every order is quoted per part number.\u003c\/p\u003e\n\u003ch2\u003eNVIDIA Spectrum-2 SN3700 SN3700-VS2F\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNVIDIA Spectrum-2 SN3700 (VS2F)\u003c\/strong\u003e is a 32-port 200GbE switch: 6.4 Tb\/s switching capacity (32 × 200GbE, non-blocking), 8.33 Bpps, 425 ns latency and a 42 MB shared buffer for lossless RoCEv2. Each QSFP56 port breaks out to 2 × 100GbE or 4 × 50GbE, which lets one 1U box serve 200G uplinks and 100G or 50G servers in the same rack.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eCondition: Used — cleaned, re-flashed and bench-tested on our own test line before it is listed. 90-day warranty from delivery.\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;width:32%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSN3700-VS2F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFamily\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVIDIA Spectrum-2 SN3700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitch silicon\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVIDIA Spectrum-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePorts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 × 200GbE QSFP56\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePort speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200GbE per port (100\/50\/40\/25GbE with breakouts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQSFP56 (32 ports)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitching capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.4 Tb\/s switching capacity (32 × 200GbE, non-blocking)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLatency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e425 ns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePacket buffer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e42 MB shared packet buffer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAirflow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eP2C — power-to-connector (front-to-back)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eForm factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1U rackmount, standard depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e44 × 428 × 559 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 × hot-swap AC PSU (1+1), 6 × hot-swap fans\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManagement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ex86 quad-core control plane, 8 GB RAM, 32 GB SSD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoftware\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNVIDIA Onyx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e32 × 200GbE QSFP56 ports\u003c\/li\u003e\n\u003cli\u003e6.4 Tb\/s switching capacity (32 × 200GbE, non-blocking), 8.33 Bpps\u003c\/li\u003e\n\u003cli\u003e425 ns latency, 42 MB buffer\u003c\/li\u003e\n\u003cli\u003eBreakout to 2 × 100GbE or 4 × 50GbE\u003c\/li\u003e\n\u003cli\u003eRoCEv2 with PFC and ECN\u003c\/li\u003e\n\u003cli\u003eOnyx, VXLAN\/EVPN\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical deployments\u003c\/h3\u003e\u003cp\u003e200G leaf\/spine in AI and storage fabrics, 100G server aggregation with breakouts, and EVPN-VXLAN overlays in standard front-to-back racks.\u003c\/p\u003e\n\u003ch3\u003eWhat is included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSwitch chassis with both power supplies\u003c\/li\u003e\n\u003cli\u003eFan units (P2C)\u003c\/li\u003e\n\u003cli\u003eRail kit\u003c\/li\u003e\n\u003cli\u003eCondition report and bench-test notes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNot included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eQSFP56 optics and cables\u003c\/li\u003e\n\u003cli\u003eAdditional NOS licences\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSN3700-VS2F in the lineup\u003c\/h3\u003e\u003cp\u003eThe SN3700 doubles port speed over the SN2700 in the same 1U body. Take the SN3700C build when every downlink is 100GbE and you would rather not pay for 200G ports you cannot fill.\u003c\/p\u003e\n\u003ch3\u003eHow it compares with models we also stock\u003c\/h3\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eFabric\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003ePorts\u003c\/th\u003e\n\u003cth style=\"background:#f8f9fa;padding:8px;border:1px solid #dee2e6;\"\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#fbfdff;font-weight:600;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eSN3700-VS2F\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eEthernet 200G\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003e32 QSFP56\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003e200G leaf, P2C airflow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eSN3700-CS2F\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eEthernet 100G\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003e32 QSFP28\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003e100G-only leaf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eSN2700-CS2ROS\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eEthernet 100G\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003e32 QSFP28\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eLower-cost 100G, ONIE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eSN4600-VS2F\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003eEthernet 200G\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003e64 QSFP56\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #dee2e6;\"\u003e200G spine, 2U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhy buy this switch from Zhongxin Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBench-tested on our own in-house test line — ports, fans and power supplies are checked before the unit leaves.\u003c\/li\u003e\n\u003cli\u003eWe quote only what we can physically confirm: the exact part number, airflow direction and condition notes come from the unit in front of us.\u003c\/li\u003e\n\u003cli\u003eUsed enterprise switches at secondary-market pricing, with a 90-day warranty from delivery.\u003c\/li\u003e\n\u003cli\u003eWorldwide shipping from Hong Kong, China; consolidation with servers, NICs and optics from the same rack is routine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRequest a quote\u003c\/h3\u003e\u003cp\u003eSend the part number \u003cstrong\u003eSN3700-VS2F\u003c\/strong\u003e, the quantity you need and your destination to WhatsApp \u003ca href=\"https:\/\/wa.me\/8613068616914\"\u003e+86 13068616914\u003c\/a\u003e (or reply to any thread on zhongxindata.hk). We confirm availability against the exact model before quoting, and we can quote alternative airflow builds or port-count variants from the same family if they fit your rack better.\u003c\/p\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eHow many ports does the SN3700 have?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003e32 QSFP56 ports at 200GbE each — not 36. The 36-port 100GbE figure belongs to the SB7700 EDR InfiniBand switch, a different platform.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat speed can each port run?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003e200GbE native, or 2 × 100GbE \/ 4 × 50GbE with breakouts, so one switch serves 200G uplinks and 100G or 50G servers at the same time.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhich network OS is on it?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eOnyx on VS2F. The Cumulus Linux build is VS2FC and the ONIE build is VS2FO.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eDoes it support RoCEv2?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eYes, with PFC and ECN, and the 42 MB shared buffer absorbs bursts better than the 12 MB buffer of the older SN2700.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eIs this InfiniBand?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003eNo. It is Ethernet. For native InfiniBand at 100G the SB7700 is the matching platform; at 400G it is the Quantum-2 QM9700\/QM9790.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin:8px 0;padding:8px;border:1px solid #e0e0e0;border-radius:4px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#1a1a1a;\"\u003eWhat warranty do you provide?\u003c\/summary\u003e\u003cp style=\"margin:8px 0 0;color:#444;\"\u003e90-day warranty from delivery, after bench testing on our own line.\u003c\/p\u003e\u003c\/details\u003e\n\u003cp\u003e\u003cem\u003eAvailable at \u003ca href=\"https:\/\/zhongxindata.hk\"\u003eZhongxin Data\u003c\/a\u003e — enterprise network hardware specialists. Worldwide shipping from Hong Kong, China.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:13px;color:#666;\"\u003e\u003cem\u003eProduct image is a reference image for the form factor — revision, label and airflow sticker vary by batch. Ask us for photos of the actual unit before you commit.\u003c\/em\u003e\u003c\/p\u003e","brand":"NVIDIA Mellanox","offers":[{"title":"Default Title","offer_id":55807042879780,"sku":"ALI-1601824521563","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/6223\/6708\/files\/100G-QSFP28-Ethernet-Switch-Used-for.webp?v=1784864316","url":"https:\/\/zhongxindata.hk\/products\/mellanox-sn3700-vs2f-200gbe-32-port-qsfp56-switch-used","provider":"Zhongxin Data","version":"1.0","type":"link"}