New cflowd bits

Daniel McRobb dwm at
Thu Jan 23 12:01:48 UTC 1997

Hi folks.

I just posted a new version of cflowd at:

The new version (1.2-alpha) has a rewritten raw flow module using
memory-mapped I/O.  For those of you that have used it, you can now turn
on raw flow logging and not thrash your machine with flow->disk I/O.
The new version also has a bug fix for remote client connections; this
is an old fix I never got around to posting.

The code is still based on some old beta Cisco bits which include AS
numbers in flow-export.  I don't know the status of getting that code
into ELC, but I'll try to find out (Paul?  Dave?  Anyone?).

In about 5 minutes, I'll be deploying this new code on a few ANS
machines and leaving raw flow logging turned on.  Who knows, maybe I'll
have a silly SYN flood story for San Francisco.

I do have about 3 month's worth of AS matrix data (5-minute polling
intervals) on-line and have a lot of charts.  I'll put up some of my
slides at the site above soon.


P.S. - I've only tested the latest on AIX 3.2.5... in fact I've only
*compiled* it on AIX 3.2.5.  Hopefully it'll still compile/run fine on
the platforms targetted in the original version.  You can send bugs to
me just like before; I make no guarantees I'll reply or have time to fix
anything, but I do promise to at least tuck away the mail until I have a
chance to look at it or I need the disk space back.  ;-)

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