Silicom Network Monitoring & Capturing Network Monitoring Adapter Card


Dual Capture Card – Dual QSFP28 port card supporting 2x100G Ethernet, PCIe Gen3 x16 lanes

The Silicom Denmark fb2CGg3 Dual capture card offers 2x100GE network connectivity and line rate capture to host memory with zero packet loss and hardware packet processing.

The fbC2CGg3 dual capture card is based on cutting edge Xilinx FPGA technology, providing packet filtering, advanced  processing, traffic management, load balancing and host offloading mechanisms.

This high performance hardware platform connects to 100GE using QSFP28 modules and performs packet processing, while delivering a sustained throughput to host memory of up to 224 Gbps. The use of QSFP28 cages also allows use of QSFP to support 8x10GE, 2x40GE as wells as 8x25GE

The card uses a single-slot PCIe solution through a 16-lane PCIe slot. It also features a second PCIe connector for cable connection to a second PCIe slot. The second PCIe connector can also serve as a card-to-card interconnect path to a second card. Both use cases enable effective traffic management and load balancing in NUMA environments.

This Dual Capture card is also available as a cost optimized variant for 10GE and 40GE.


fbC2CGg3 – Dual Port Capture Card:

  • 10/40/25/100 Gbit/s Ethernet, IEEE 802.3
  • Up to 2 x 100GE ports via QSFP28 ports
  • 112 Gbps sustained capture to host
  • 16-lane PCIe Gen3
  • Precision timestamping
  • 3.2 nano second resolution
  • Optional PTP IEEE 1588-2008 sync board with RJ45 interface
  • Microsecond latency
  • Hardware filtering and traffic distribution
  • Application acceleration and scalability


IEEE standard: IEEE 802.3 10GE, 40GE, 25GE, 100GE
Physical interface: 2 x QSFP28 port
10GE and 25GE supported through break-out cable assemblies
Supported QSFP28 modules (25GE/100GE)

  • SR4, LR4, PSM4, CWDM4/CLR4, CR4 (DAC), ER4
  • Appropriate 4x25GE Break-out modules

Supported QSFP+ modules (10GE/40GE)

  • SR4, LR4, PSM4/IR4, CWDM4, ER4, ZR4 BiDi (850 nm) CR4 (DAC)
  • Appropriate 4x10GE Break-out modules

Ethernet PHY directly embedded in FPGA

Physical bus connector: 16 lane PCIe
PCIe bus type: 16 lanes PCIe Gen3
PCIe compliant
64 logical channels that can be connected to DMA or egressed to physical output ports

On board buffering for application robustness
16 GB 64 bit DDR4

Capture rate (bursts):  Line rate
Capture rate (sustained): Line rate, PCIe BW limited

Less than 3.2 μs to host memory
Less than 3.2 μs from host memory to Tx
Non-blocking sending, allowing user applications to operate independently

Resolution = 3.2 ns
Accuracy down to 20 ns
Daisy chain PPS between multiple cards supported

  • Via COAX or Card interconnect adapter

PPS synchronization via SMA connector
Optional PTP IEEE 1588-2008 RJ45 via secondary supporting card

Dual boot images with automatic fallback to fail-safe image
Full firmware upgrades via supplied tools or fbCAPTURE API

Physical dimensions: ¾ length, standard height
PCIe: 111 x 254 mm
Weight: 320g
Operating temperature: 0 – 55°C, 30 – 130°F
Operating humidity: 20 – 80%
Hardware compliance: RoHS, CE
Passive cooling, with adequate host cooling, available
Active cooling solution

On-board temperature sensor
On-board multi-color status LED
Link and Activity LED for ports

All card variants have FPGAs optimized for resource requirements of the varying link types. Available models: Variants supporting multiple speeds can be freely used with these speeds.

  • Full functional variant on all speeds, fbC2CGg3, Same HW for all speeds
    • fbC2CGg3-8×10 for 10GE,
    • fbC2CGg3-2×25 for 25GE,
    • fbC2CGg3-2×40 for 40GE,
    • fbC2CGg3-2×100 for 100GE, Full filters capacity
  • Cost optimized variant, fbC2CGg3-std, Same HW for all speeds
    • fbC2CGg3-std-8×10 for 10GE,
    • fbC2CGg3-std-2×25 for 25GE,
    • fbC2CGg3-std-2×40 for 40GE,
    • fbC2CGg3-std-2×100 for 100GE, limited filters capacity

Mixed speed models can can be customized


100GE Capture Cards: Silicom PB_fbC2CGg3 Datasheet