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North American Network Operators Group

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Re: representativeness of flow data based on samples

  • From: Jennifer Rexford
  • Date: Thu Jan 31 13:30:08 2002

> There are a few vendors who now provide traffic export from high-speed 
> interfaces by sampling those interfaces at a particular rate, and
> using the sampled packets to populate the per-flow counters, rather
> than looking at every packet.

Folks might be interested in the Internet Draft on "A framework for
passive packet measurement" that focuses on packet sampling.  See

  http://www.ietf.org/internet-drafts/draft-duffield-framework-papame-00.txt

There's a public mailing list at

  listname : psamp@ops.ietf.org
  subscribe: psamp-request@ops.ietf.org (with "subscribe" as the message)
  archive  : https://ops.ietf.org/lists/psamp/

The goal is to define a minimal set of requirements that need to be
supported in routers (or line cards) to meet the needs of folks that
operate networks.  Feedback more than welcome!

-- Jen




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