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Solarflare Flareon Ultra SFN8542 PLUS Dual-Port 40GbE QSFP+ PCIe 3.1 Server I/O Adapter

Expand beyond trading applications with 40GbE & low-latency

The new Flareon™ Ultra SFN8500 adapter family provides Solarflare’s best performance yet, with higher bandwidth, lower latency and higher packet rate. The SFN8500 family adapters are based on a common hardware platform, enabling customers to configure the features and performance they want to meet the particular needs of each application.
Availability: In stock

For details on how to purchase the Solarflare Flareon Ultra SFN8542 PLUS Dual-Port 40GbE QSFP+ PCIe 3.1 Server I/O Adapter, please click the button below to send us your details and brief requirements. We can then quote you accordingly.


SFN8542 PLUS Provides Solarflare’s best performance yet, with higher bandwidth, lower latency and higher packet rate

The PLUS variant of the Flareon Ultra SFN8542 Dual-Port 40GbE QSFP+ Server I/O Adapter adds a suite of enabled software capabilities that provide out-of-the box support for ultra-low latency Onload-accelerated sockets as well as PPS and PTP time synchronization support.

The SFN8542-PLUS is capable of associating a hardware time-stamp with every incoming and outgoing Ethernet frame for application troubleshooting or performance monitoring. These features make the SFN8542-PLUS the ultra-low-latency Ethernet adapter of choice to deploy as a key component throughout Financial Trading infrastructures where either one or two ports of 40GbE or four ports of 10GbE are required.

  • Ultra-low latency (sub 1usec)
  • High packet rate (60Mpps for 2x40G)
  • Internal switch for single core/4 port operation (4x10GbE from a single 40GbE QSFP+ port)
  • 16 lanes PCIe Gen 3.1 – full 2x40Gb/s bidirectional performance
  • Revolutionary tamper resistant adapter security
  • VXLAN, NVGRE and GENEVE checksum offload
  • Management Control Transport Protocol Security through sideband management over PCI
  • Supports all Solarflare AppFlex software

Capabilities such as ultra-low latency, Onload kernel bypass, class leading precision clock synchronization accuracy, SolarSecure Filter Engine, SolarCapture and more can be enabled to run on any SFN8500 adapter on the network, making this the one Ethernet adapter to deploy across your data center or cloud infrastructure.

CPU-Efficient Networking

The Flareon Ultra SFN8542 dual-port 40G Ethernet QSFP+ server adapter delivers faster, more efficient processing of network traffic to accelerate a wide range of applications.

The SFN8542 has 16 lanes of PCIe 3.1 making it an ideal workhorse for 40GbE data center and cloud workloads, providing high-bandwidth, high packet rate and CPU-efficient processing of network traffic. The SFN8542 can be configured as a dual-port 40GbE or a quad-port 10GbE adapter (with four 10GbE ports from QSFP+) as one QSFP+ port can also operate as four 10GbE SFP+ ports.

Configurable Software

When configured with Solarflare software licenses, the SFN8542 can address ultralow latency applications, precision clock synchronization and hardware time stamping, packet filtering, packet capture and more.

Adapters can be purchased preconfigured with popular software bundles, or configured on-site with software options.

Ultra-Low Latency

Flareon Ultra SFN8542 offers fast and efficient hardware that optimizes packet flow to and from the user application.

When configured for ultra-low latency, the SFN8542 delivers unrivaled sub-microsecond latency. With Onload, the industry’s best applicationto-application performance is enabled via Solarflare’s unique and patented kernel bypass techniques.

Scalable, High-Performance Virtualization

Flareon Ultra SFN8542 provides unmatched performance and scalability in virtualized environments.

Solarflare is the proven leader in VM density and performance, and the SFN8542 raises the bar with 2048 vNICs, SR-IOV, overlay network acceleration (VXLAN, NVGRE). In addition, the SFN8542 supports kernel bypass running in a guest VM, so users can run ultralow latency Onload or SolarCapture in a virtualized or cloud environment.

Accelerating Cloud, Web and CDN Apps

Flareon Ultra SFN8542 provides highbandwidth, high packet rate and CPU efficient processing of network traffic, making it ideal for scale-out cloud, web and CDN application environments.

Solarflare adapters are used in a wide range of use cases, including web content optimization, DNS acceleration, web firewalls, load balancing, NOSQL databases, caching tiers (Memcached) and web proxies. In addition when used with Onload, the SFN8542 further reduces host processing overhead and accelerates web and cloud traffic. When used with SolarSecure Filter Engine, the SFN8542 provides an additional layer of defense against DDoS attacks at the network ingress point to the server. Attacks can be absorbed without degradation of “good” traffic, enabling a 3 to 4x improvement in packet-level filtering server headroom.*

Manufacturer Solarflare
Part No. SFN8542PLUS
End of Life? No
Advanced Network Features Stable Precision Oscillator
• Stratum 3 compliant.

60Mpps TX & RX sustained line rate with all packet sizes.
Bandwidth Supports high-performance 10GbE/40GbE
Channels Supports optical QSFP+ modules including Solarflare SFM40G-SR4, DirectAttach Copper, Active Optical Cables, QSFP+ to SFP+ copper DAC cables
Hardware Offloads TSO, LRO, GSO, IPv4/IPv6 and TCP/UDP checksums
Host OS Support RHEL 6, 7, MRG; SLES 11, 12, SLERT; Debian 7.x, 8.x; Ubuntu 14.04 LTS, 14.10, 15.04; other Linux; Windows Server
• 2008 Regulatory product code: S7120 R2, 2012, 2012 R2
Virtualisation Support VMware ESXi 5.x,6.0; Microsoft Hyper-V; Linux KVM
PCI Slot(s) PCIe 3.1 x16 @ 8.0 GT/s
Switching Capacity Integrated Layer 2 Ethernet switch, VEB/ Virtual switch
Ports Dual-Port 40GbE QSFP+
Port-Port Latency Cut-through architecture/intelligent interrupt coalescing
IEEE Compliance • IEEE 802.3ae
• IEEE 802.3ad
• IEEE 802.1Q
• IEEE 802.1p
• IEEE 802.3x
• RoHS Compliant
RoHS Compliant
Power Consumption 10W (Typical)
SFN8542-PLUS Solarflare Flareon Ultra SFN8542 Server Adapter Plus Dual-Port 40GbE QSFP+