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HPE

HPE P25960-B21 | NIC | 2x100GbE QSFP56 | PCIe 4.0 x16 | SR-IOV, RoCEv2, VXLAN offload

SKU:P25960-B21

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Description

High-performance dual-port 100GbE PCIe server adapter with QSFP56 cages for dense, low-latency fabrics in virtualization, HPC, storage, and cloud environments. PCIe 4.0 x16 bandwidth with advanced offloads (SR-IOV, RoCEv2, VXLAN/NVGRE) helps maximize throughput and reduce CPU utilization. Ideal for NVMe-oF, east–west traffic, and scale-out applications.

Features

- Dual 100GbE with QSFP56 for high-density fabrics
- PCIe 4.0 x16 host interface for maximum throughput headroom
- Advanced offloads (SR-IOV, RoCEv2, VXLAN/NVGRE) to reduce CPU load
- Data center features for virtualization and cloud-scale networking
- Broad OS and hypervisor support for easy deployment

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: Can the ports use existing 100G QSFP28 optics?
A: QSFP56 cages can accept compatible QSFP28 100G modules and DACs. Always verify transceiver and cable compatibility with the server HCL.

Q: Does it require a PCIe Gen4 slot?
A: It operates in PCIe Gen3 or Gen4 slots. Gen4 x16 provides maximum performance; Gen3 will reduce available bandwidth.

Q: Is RDMA supported?
A: Yes, RDMA over Converged Ethernet (RoCE v2) is supported for low-latency workloads.

Q: What workloads benefit most from this adapter?
A: HPC, NVMe-over-Fabrics, virtualization with high vNIC density, AI/ML data pipelines, and scale-out storage/analytics.

Q: Which transceiver and DAC types are recommended?
A: Use qualified QSFP56 or QSFP28 modules and DAC/AOC cables matched to the required reach and fiber type. Check the platform’s supported options list.

Technical Specifications

- Ports: 2 x 100GbE
- Cage type: QSFP56 (accepts compatible QSFP56/QSFP28 optics and DAC/AOC)
- Host interface: PCIe 4.0 x16
- Aggregate throughput: up to 200 Gbps
- Latency: low-latency design suitable for HPC and storage fabrics
- Offloads: SR-IOV, RoCE v2, VXLAN/NVGRE, RSS, TSO/LRO, checksum
- Virtualization: hardware virtualization queues and QoS
- Use cases: NVMe-oF, cloud, virtualization, AI/ML, big data
- OS compatibility: major Linux distributions, VMware ESXi, Windows Server
- Form factor: low-profile PCIe adapter (full-height bracket availability may vary by kit)

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