North American Network Operators Group
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Re: Interesting netflow entry

  • From: Bill Nash
  • Date: Tue Feb 07 13:29:47 2006 
On Mon, 6 Feb 2006, Wil Schultz wrote:
Incidentally (because I ask everyone this), what's your flow volume (flows per second)?

Cannot get ahold of the machine until tomorrow. I did a 'wc' on 4 devices for 5 minutes and it comes out to just under 3600, about 11-12 per second...

Erm, that seems kind of low. Flow volume for two 6509s in what I consider a small to medium size hosting site, with about 6+ gigs of differentiated egress generates more than 8 to 9 *thousand* flows per second, and that's after discard incomplete tcp flows (port scans, half open syns, etc.)

Are you sure you're getting everything?

- billn