You also might want to look into nfdump at
http://nfdump.sourceforge.net/. 


It's active as of 2010-07-11 and has a flow-tools to nfdump converter
(ft2nfdump) if you want to experiment with it using your existing data.




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-----Original Message-----
 

> From: [email protected] 
> [mailto:[email protected]] On Behalf Of 
> Craig Weinhold
> Sent: Tuesday, September 20, 2011 10:30 AM
> To: Richard Hartmann
> Cc: [email protected]
> Subject: Re: [Flow-tools] flow-export 0.68 hanging while 
> reading in data
> 
> Maybe try flowdumper? it's a perl utility included with the 
> Cflow.pm library from flow-tools contrib directory that 
> simply prints flows.
> 
> flow-export doesn't have a lot of places where it can hang. 
> The only one is in the ftio_read routine which relies on zlib 
> compression. Maybe disable compression on your collector, or 
> recompile flow-tools with the most up-to-date zlib version?
> 
> flow-tools does have known problems. flow-report creates 
> unbounded data structures that can seem to hang when 
> processing flow storms. Flow-capture may write garbage that 
> is received on the collector port, and this can confuse its 
> sequence number tracking. I've never seen it lock up, though.
> 
> One thing is for certain -- if a flow file is corrupt, 
> there's not much you can easily do to fix it. Just delete it 
> and move on...
> 
> 
> I've switched to using flowd 
> (http://www.mindrot.org/projects/flowd/) as a collector, and 
> then importing the files into flow-tools format.
> 
> -Craig
> 
> 
> On Tue, 20 Sep 2011, Richard Hartmann wrote:
> 
> > Hi all,
> > 
> > recently, flow-export started to hang during exports. When 
> using the 
> > same input file and options, it's always hanging at the same line.
> > Using different command line options on the same file makes 
> it hang in 
> > different places, but given fixed combination of file & 
> options, you 
> > will always hang at the same line.
> > 
> > So all of these will hang at different places, reproducibly:
> > 
> > flow-export -f2 < foo
> > 
> > flow-export -f2 \
> > -mUNIX_SECS,DPKTS,DOCTETS,SRCADDR,DSTADDR,SRCPORT,DSTPORT,PROT < foo
> > 
> > flow-export -f2 \
> > 
> -mUNIX_SECS,DPKTS,DOCTETS,SRCADDR,DSTADDR,SRCPORT,DSTPORT,PROT
>  < foo > 
> > \ bar
> > 
> > As I don't speak C, my options are somewhat limited.
> > 
> > Any help, or suggestions of software that is actively 
> maintained (in 
> > case flow-tools are simply deprecated), welcome. Especially if they 
> > are able to read the format used by flow-capture.
> > 
> > 
> > Thanks,
> > Richard
> > _______________________________________________
> > Flow-tools mailing list
> > [email protected]
> > http://mailman.splintered.net/mailman/listinfo/flow-tools
> > 
> _______________________________________________
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>
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