100GbE QSFP28 Ethernet Switch Used for Mellanox SN3800-CS2F 64-Port 2U Network Switch
100GbE QSFP28 Ethernet Switch Used for Mellanox SN3800-CS2F 64-Port 2U Network Switch
NVIDIA Mellanox Spectrum-3 SN3800 Multi-Speed Datacenter Switch
The NVIDIA Mellanox Spectrum-3 SN3800 Multi-Speed Datacenter Switch is a high-performance datacenter Ethernet switch powered by the NVIDIA Spectrum-3 ASIC, delivering 12.8 Tbps full duplex of non-blocking throughput with Variable: up to 36×200GbE / 64×100GbE / 128×50GbE / 256×25GbE / 8×400GbE ports. Designed for 400G/200G cloud spine, it provides < 250 ns cut-through cut-through latency and 64 MB shared packet buffer shared packet buffer for lossless RoCE v2 RDMA transport.
Condition: Refurbished / Pre-owned — fully tested, cleaned, and verified. Ships with warranty coverage.
| Specification | Details |
|---|---|
| Chip | Spectrum-3 |
| Ports | Variable: up to 36×200GbE / 64×100GbE / 128×50GbE / 256×25GbE / 8×400GbE |
| Throughput | 12.8 Tbps full duplex |
| Latency | < 250 ns cut-through |
| Packet Rate | 9.52 Bpps |
| Buffer | 64 MB shared packet buffer |
| Power | ≤ 350W typical |
| Dimensions | 440 × 470 × 43 mm (1U) |
| Weight | 8.5 kg |
| Interfaces | 1× RJ45 management, 1× micro-USB console, 1× USB 3.0 |
| Os | Cumulus Linux, SONiC, MLNX-OS |
| Features | VXLAN, EVPN, RoCE v2, PFC, ECN, DCB, NAT, VRF, ACL 24K, Advanced Mirroring, sFlow, QoS per-queue |
Key Features
- VXLAN
- EVPN
- RoCE v2
- PFC
- ECN
- DCB
- NAT
- VRF
- ACL 24K
- Advanced Mirroring
- sFlow
- QoS per-queue
Typical Applications
400G/200G cloud spine, AI/ML large-scale training, HPC, storage NVMe-oF, telecom core
Frequently Asked Questions
\What speeds does the SN3800 support?
The SN3800 supports 25G, 50G, 100G, 200G, and 400GbE simultaneously on different ports—making it ideal for mixed-speed cloud spine deployments.
How does SN3800 compare to SN3700?
SN3800 uses the Spectrum-3 ASIC with 12.8 Tbps throughput (vs 7.2 Tbps), 64 MB buffer (vs 16 MB), and supports 400G ports. It's designed for next-generation 400G spine while SN3700 targets 100G/200G leaf.
Can SN3800 be used as a spine switch?
Yes. With up to 8×400GbE or 36×200GbE ports and 12.8 Tbps throughput, the SN3800 is designed for high-density cloud spine layers.
What buffer size does SN3800 have?
64 MB shared packet buffer—4× larger than SN3700—ensuring zero packet loss even under heavy RoCE v2 RDMA traffic in AI training clusters.
Available at Zhongxin Data — enterprise network hardware specialists. Worldwide shipping from Hong Kong.