Timestamp

Each packet that enters an ANIC adapter is tagged with a timestamp with up to 4nS (nanosecond) time precision. The ANIC adapter has to be disciplined from a timing source and there are five options as follows listed in order of popularity:

  1. Host OS – The host operating system acts as the time source and can in turn be disciplined by any other source such as PTP, 1PPS, NTP or the like.
  2. GPS/CDMA – ANIC adapter can be directly attached (via a front port) to a 1PPS (One Pulse Per Second) time source such as GPS or CDMA.
  3. PTP or IEEE 1588 – A PTP (Precision Time Protocol) network can be directly attached to an ANIC adapter via a front port.
  4. Another ANIC adapter – One ANIC adapter can be the time source for another by attaching them via the onboard “card-to-card bus”.
  5. Free Running – All timing is handled by the ANIC adapter onboard clock. This is the least precise mechanism but easiest to utilize.

noteAn ANIC adapter can also parse out a Gigamon or Arista generated timestamp and propagate it forward to the host application.


About Accolade

Accolade is the technology leader in FPGA-based Host CPU Offload and 100% Packet Capture PCIe NIC’s and Scalable 1U Platforms. Accolade’s line of 1-100GE products enable 100% packet capture, flow classification, deduplication, packet filtering and more. Our customers are global leaders in network monitoring & cybersecurity applications as well as in the network test and measurement, telecom and video stream monitoring markets.

FPGA Acceleration Features

100% Packet Capture | Flow Classification | Precise Time Stamping | Packet Merging | Packet Slicing | Packet Parsing | Packet Filtering | Deduplication | Host Packet Buffer | Packet Steering | Direct Memory Access (DMA) | Statistics (RMON1)

Free Product Evaluation

Let Accolade show you how to substantially cut your time-to-market. Our 60 day free product evaluation, for qualified customers, allows you to test and evaluate our comprehensive host CPU offload feature sets and seamless API. Contact Us.

Visit us at eventsthroughout the year:


Cisco Live U.S.
Las Vegas, NV
Jun 25 – 29, 2017

Share on LinkedInTweet about this on TwitterShare on Google+Email this to someone