Skip to content

Test form, fit, and function. Our engineers will help you all the way.

NT50B01 SmartNIC
with Link-Capture™ Software

2×1/10G, 2×10/25G

Use cutting-edge SmartNIC technology to add real-time line-rate performance to your application. The NT50B01 SmartNIC provides full packet capture of network data at 50 Gbps with zero packet loss. Nanosecond precision time-stamping and merge of packets from multiple ports ensures correct timing and sequencing of packets. The SmartNIC can also be used for 100% packet replay with nanosecond precision of all networking traffic for analytics, testing and simulation.

The NT50B01 SmartNIC enables full utilization of CPU cores through advanced receive side scaling with support for tunneling protocols, such as GTP, IP-in-IP, NVGRE and VxLAN. The NT50B01 SmartNIC can also remove duplicate packets, slice packets and filter packets to reduce the amount of data and thereby offload the server system and applications. Stateful flow processing with support for 50 million flows enables CPU-hungry applications, such as Suricata, to intelligently select exactly which flows to process and which to ignore. Flow records are maintained for all flows and reported to the application. The NT50B01 SmartNIC is NEBS level 3 compliant.








Napatech SmartNICs enable implementation of high-performance network appliances based on standard servers. Examples of applications include:

• Quality of experience optimization
• Financial latency measurement
• Customer experience analysis
• Data loss prevention
• Cyber defense

• Fraud detection and compliance management
• Infrastructure management and security
• Network and application performance
• Troubleshooting and compliance

Compatible Capture Software

Link-Capture™ Software

Link-Capture™ Software

Link-Capture™ Software is ideal for performing high-speed packet capture with nanosecond timestamping and replay with precise inter-frame gap control.

What our engineers say:

Designed for epic performance.

Lower power, space, and cooling.

NT50B01 SmartNIC

A proprietary full body heatsink secures optimal cooling performance in challenging applications for all critical components in the SmartNIC.


    • Durable design for extended real-life operation
    • NEBS compliance, meeting telco requirements


  • No airflow dependency to server
  • Well-defined cooling of all critical components
  • Guaranteed device hot spot temperatures
  • Maximized airflow, ensuring optimal thermal performance
  • Dissipated energy exhaled outside server through front plate cutouts
  • Significant reduction in temperature drop between FPGA die and heat sink surface
  • Mechanical stiffener enabling higher screw torque for fastening heatsink to the PCB


Napatech upholds the highest quality, environmental and safety standards, and complies with all applicable regulations across regions. This helps our customers to realize a seamless integration without delays – and ensures error-free operation throughout the product life cycle.

Ethernet Front Port Compliance

The SmartNIC design maximizes mechanical and electrical front port margin, securing trouble-free operation with the optical or electrical modules of the customer’s choice.

The thermal design is validated dissipating the maximum power level as standardized for the given form factor. Margin on the data interface has been optimized tuning the equalization parameters of the transceivers hosting the front port channel, maximizing EYE margin to the relevant standard.

EMC Compliance

All Napatech designs have passed EMC compliance testing for major regions, including Europe and North America. By ensuring compliance as an integral part of the design, the risk of delays is eliminated. Moreover, the EMC testing has been performed in a mainstream server, potentially directly applicable to the use case.

Environmental Compliance

The end product (server + installed SmartNIC) must adhere to regional environmental legislation. To enable trouble-free server integration, Napatech SmartNICs are manufactured using only materials that fully comply with the current RoHS, REACH and proprietary Tier 1 legislation.

Full compliance from early inception eliminates the risk delays and product withdrawal due to authority intervention.

Event Handling & System Monitoring

In order for the SmartNIC to become an integral part of the server environment and maximize uptime, it needs to monitor and expose key performance metrics to the application during operation. Napatech SmartNICs monitor the following metrics:

  • Blower speed
  • Hot spot temperatures
  • Key supply voltages and currents
  • PCI protocol events
  • General system events

PCI Compliance

With the PCI interface on the SmartNIC dictated by the server plane, the hardware maximizes mechanical and electrical PCI margin, ensuring trouble-free operation in the server and server slot(s) of the customer’s choice. All designs have passed relevant PCI-SIG tests and have been adopted on the PCI-SIG integrators list.

Safety Compliance

To enable trouble-free server integration, Napatech SmartNICs are fully compliant with all applicable safety standards.

By ensuring safety compliance as an integral part of the SmartNIC design, the risk of delays is eliminated. Compliance testing is performed in a mainstream server, potentially directly applicable to the use case.

Conflict Minerals Compliance

To ensure quick and trouble-free server integration, Napatech SmartNICs are manufactured using only materials that fully comply with the relevant Conflict Mineral Legislation. For US based SmartNIC integrators, this facilitates submission of the mandatory Conflict Mineral report to SEC.

Shock & Vibration Robustness

Many server environments expose the SmartNIC to substantial shock and vibration, predominantly during the transportation phase. To ensure trouble-free server integration and operational robustness throughout the product life cycle, validated design aspects include:

  • Cooling enclosure for superior mechanical stiffness
  • Key exposed components are under-filled (glued) to the PCB
  • Shock robustness validated against JESD22-B110A
  • Vibration robustness validated against ASTM D4169-09

Used across industries

Cyber security

Detect Advanced Persistent Threats (APT) and other breaches to your network at 2×10/25G – no activity goes unnoticed.

Across industries, cyber assaults are accumulating at alarming rates. Hackers are constantly refining their tactics and repeatedly circumventing static defenses.
To identify any suspicious activity on your network, you need full visibility at all times. Even a marginal fraction of information lost can potentially compromise the safety of your business. Who has been on your network, what have they done, and when exactly did they do it? A myriad of intelligent security solutions are available to help you answer these questions – but to deliver the needed insights, they need fully reliable data.

With the Napatech NT50B01 SmartNIC, we help you ensure that no data is lost and no activity goes unnoticed. Napatech provides guaranteed delivery of network data, and supply all the information needed for effective forensic analysis in real-time, even at speeds up to 2x25G. This means a much shorter response time, improved mitigation and ultimately a reinforced security.

Telecom operators

Break the cost/performance barrier.

With the increasing number of telecom carriers migrating to 25G and higher speed solutions, the need to continually upgrade network performance is growing. But monitoring and analyzing multiple 25G links brings certain challenges.

The NT50B01 SmartNIC from Napatech enables direct analysis of 2x25G with just a single server. It merges upstream and downstream data so specific information can be delivered directly to the right CPU core even for fragmented traffic and GTP tunnels. This lowers the processing load on the CPUs and enables the application to efficiently analyze the target data.

With the NT50B01 SmartNIC, applications will be able to monitor performance and analyze quality of experience even at 2x25G. This enables telecom operators to improve quality, while better managing the bandwidth challenges posed by rich media applications.

Network management

Provide reliable results and insights without compromise, in real time and with nanosecond precision.

With the colossal growth of web-based applications and cloud services, users are demanding greater access to data at faster speeds. Network operators are in continuous pursuit of more effective monitoring and analysis solutions to help them boost performance. But even the best solutions cannot deliver without completely reliable data.

The NT50B01 SmartNIC guarantees quick and accurate data delivery even at 2x25G. Traffic on the four 25G ports is timestamped with nanosecond precision and delivered to the network application in the right order – a huge benefit for the analysis of network traffic. This enables network solutions to instantly and effectively identify and remediate any performance issues – and ultimately helps to optimize infrastructure, increase network uptime and reduce the number of man-hours required to identify any issues.

Feature Highlights and Specifications

Rx Packet Processing • Zero packet loss for packet size 64 – 10,000 bytes
• Sustained traffic up to 50 Gbps (PCIe3 ×16 packet bandwidth)
• Line rate 2 × 25 Gbps traffic burst, 1700 milliseconds buffering
• Multi-port packet merge, sequenced in time stamp order
• L2, L3 and L4 protocol classification
• GTP, IP-in-IP, GRE, NVGRE, VxLAN, Pseudowire, Fabric Path, VNtag tunneling support
• Pattern match, network port, protocol, length, and error filters
• Custom flow definitions based on 2-, 3-, 4-, 5- or 6-tuple
• Flow match/actions: Forward to application or network port or drop packet
• Stateful flow management(*)
• 25 million bidirectional IPv4 or IPv6 flows
• Learning rate: 2 million flows/sec
• TCP flow termination, flow timeout, or application-requested
• Flow records with Rx packet/byte counters and TCP flags
• Stateless flow management
• Up to 36,000 IPv4 or up to 7,500 IPv6 2-tuple flows
• Custom hash keys, symmetric hash key option
• CPU load distribution based on hash key or filter or per flow
• 128 Rx queues, 16 MB – 1 TB Rx buffer size
• Packet descriptors with metadata
• IP fragment handling
• Deduplication
• Slicing at dynamic offset or fixed offset from start or end of packet
• Extended RMON1 and counters per filter and per queue
Tx Packet Processing • Line rate Tx up to 100 Gbps for packet size 64 – 10,000 bytes
• Replay as captured with nanoseconds precision
• Per-port traffic shaping
• Port-to-port forwarding
• 128 Tx queues, 4 MB Tx buffer size
Time Stamping and Synchronization • Rx time stamp and Tx time stamp inject
• OS time synchronization
• Time stamp formats: Unix 10 ns, Unix 1 ns, PCAP 1 us, PCAP 1 ns
Network standards • IEEE 802.3 1G, 10G and 25G Ethernet
Supported pluggable modules • 1000BASE-T, SX, LX, ZX (*)
Software • Operating systems: Linux
• libpcap and DPDK
• Napatech NTAPI for highest performance and advanced features
• SDK tools included in source code for debugging and prototyping and as application examples
Hardware • Xilinx XCKU15P FPGA
• PCIe Gen3 16 lanes @ 8 GT/s
• 2 × SFP28 network ports
• Flash memory with support for two boot images
• Built-in thermal protection
• Physical dimensions: 1⁄2-length and 1⁄2-height PCIe
• Weight excluding pluggable modules: 350 g
• MTBF according to IEC TR 62380 (UTE C 80-810 –2004): 991,182 hours
• Power consumption including 25GBASE-SR modules and typical traffic load: 30 Watts
Environment for NT50B01 • Operating temperature: –5 °C to 55 °C (23 °F to 131 °F) measured around the SmartNIC
• Operating humidity: 5% to 85% • Altitude: < 1,800 m
• Airflow: >= 3.5 m/s
Regulatory Approvals and Compliances • PCI-SIG®, NEBS level 3, CE, CB, RoHS, REACH, cURus (UL), FCC, ICES, VCCI, RCM
Product: Data Rates included:
NT50B01-2×25/10 2 × 10/25 Gbps
NT50B01-2×25/10/2×10/1(*) 2 × 10/25 Gbps and 2 × 1/10 Gbps

(*)Future release

Try a free 30-day trial

Find out if the Napatech NT50B01 SmartNIC is right for you
– our engineers will help you all the way.

Back To Top