Drivers and Modules

This section contains a description for all the modules and drivers currently available in PF_RING. Below you can find a comparison of NIC features supported by PF_RING.

Supported NICs Comparison

This table below helps you understanding what you can expect when using a given NIC with PF_RING. ntop does not endorse any manufacturer (adapters are listed in alphabetical order), so this page is designed to help the reader to select the best NIC/PF_RING comparison for its needs.

  Accolade Endace Exablaze Fiberblaze Intel Intel RRC Myricom Napatech
Max Port Speed (Gbit) 100 10 40 100 40 100 10 100
On-board Memory (*) Yes Yes No Yes No No No Yes
Hardware Filtering Yes No Yes Yes No Yes No Yes
Hardware Port Merge Yes No No Yes No Yes Yes Yes
Hardware Timestamps Yes Yes Yes Yes No No Yes Yes
Pcap Chunk Mode Support (*) No No No Yes No No Partial Yes
Optimized for nProbe Yes Yes Yes Yes Yes Yes Yes Yes
n2disk 1 x 10Gbit Line Rate Yes Yes No Yes Yes Yes Yes Yes
n2disk 2 x 10Gbit Line Rate No No No Yes No No Yes Yes


  • On-board memory helps mitigating traffic spikes/bursts and reduces the probability of packet loss during capture.
  • Pcap chunk mode allows the NIC to deliver many packets in one block to the application, instead of packet-by-packet. Thanks to chunk mode, the application (in particular n2disk) can significantly reduce the CPU load when dumping packets to disk. Please note that in case of index creation while dumping packets, n2disk still needs to iterate packets; even in this case chunk mode can help as it is usually more efficient than packet mode.
  • Myricom does not support from the PF_RING API a ‘pure’ chunk mode, but the performance of packet-mode with this NIC is comparable to chunk mode.