Cisco

Cisco CAI-P-N3140H | 1x400GbE QSFP112 | PCIe Gen5 x16 | RoCEv2/RDMA, SR-IOV | DOCA/GPUDirect RDMA | NVMe-oF acceleration

SKU:CAI-P-N3140H

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Description

Ultra-high-performance 400GbE SuperNIC designed for AI, HPC, and cloud-scale fabrics. Delivers line-rate RDMA (RoCEv2), advanced congestion control, and GPU-accelerated networking via GPUDirect and DOCA, enabling low-latency east–west traffic and storage acceleration.

Features

- 400GbE throughput for AI/HPC scale-out clusters
- RoCEv2 RDMA for ultra-low-latency east–west traffic
- PCIe Gen5 x16 for maximum host-to-NIC bandwidth
- GPUDirect RDMA and DOCA for accelerated GPU-centric pipelines
- NVMe-oF acceleration to optimize disaggregated storage
- Rich telemetry and PTP for precise performance tuning

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: Which optics or cables are compatible?
A: Use 400G QSFP112 transceivers or QSFP112 DAC/AOC cables matched to your desired reach and fiber type. Lower-speed QSFP28/SFP modules are not supported in the same cage.

Q: Will it operate in a PCIe Gen4 server?
A: Yes, it is backward compatible with PCIe Gen4 x16, with host bandwidth limited to Gen4 rates.

Q: Does it support RoCEv2?
A: Yes, RoCEv2 is supported for low-latency RDMA transport.

Q: Is GPUDirect RDMA supported?
A: Yes, GPUDirect RDMA is supported to reduce latency between NIC and GPU memory.

Q: Do I need QSFP-DD or OSFP modules?
A: This model uses QSFP112; select QSFP112 optics or cables. QSFP-DD and OSFP modules are not supported in QSFP112 cages.

Technical Specifications

- Port configuration: 1x 400GbE
- Cage/form: QSFP112
- Transceiver/cable support: 400G QSFP112 optical modules, active optical cables (AOC), and high-speed DAC (model-dependent)
- Host interface: PCIe Gen5 x16 (backward compatible with Gen4 x16)
- Latency/transport: RDMA over Converged Ethernet (RoCEv2)
- Virtualization: SR-IOV, scalable VFs
- Acceleration: GPUDirect RDMA, NVMe-oF (RoCE/TCP) offloads
- Congestion control & QoS: ECN, PFC, adaptive routing (platform/firmware dependent)
- Telemetry: Hardware counters and real-time flow visibility
- Jumbo frames: up to 9K (driver/OS dependent)
- Time sync: IEEE 1588 PTP support
- Software ecosystem: NVIDIA DOCA, Linux OFED/rdma-core
- Operating systems: Major Linux distributions; virtualization platforms (driver dependent)

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