[flow-tools] netflow udp packets seem to be delivered in batch

[Mark Fullmer]

It's only data generated from the supervisors that have had problems, not
streams passing through.  Maybe I misunderstood your question.  Is the
bursty behavior causing flow-capture to drop flows?

mark

On Sun, May 19, 2002 at 08:45:21PM +0800, Horatio B. Bogbindero wrote:
> Surlignage Mark Fullmer <maf@eng.oar.net>:
> 
> > Historically the 55XX and 65XX supervisor modules do a poor job of pacing
> > NetFlow exports.  It may have been fixed in later revisions of the
> > supervisor software...
> > 
> that is an interesting note. does this problem occur even if netflow is not activated on the switches. does this mean if i replace the switch or move the collecter closer to the cisco (net wise) performance will improve?
> 
> thanks.
> 
> > mark
> > 
> > On Fri, May 17, 2002 at 05:01:11PM +0800, Horatio B. Bogbindero wrote:
> > > 
> > > netflow udp packets seem to be delivered in batch. is this normal behaviour
> > of
> > > the new netflow (0.57)? i remember 0.56 receiving packets in real time.
> > > 
> > > i suspect somethings. for example, between, the 3663 and the collector
> > machine 
> > > is a 5509 with a large amount of vlans. or does the 5509 batch the flows?
> > > 
> > > thanks in advance.
> > > 
> > > -------------------------------------------
> > > William Emmanuel S. Yu
> > > Ateneo Campus Network Group (AteneoCNG)
> > > email  :  wyu at ateneo dot edu
> > > web    :  http://CNG.ateneo.net/wyu/
> > > phone  :  +63(2)4266001-4186
> > > GPG    :  http://CNG.ateneo.net/wyu/wyy.pgp
> > > 
> > > 
> > > _______________________________________________
> > > flow-tools@splintered.net
> > > http://www.splintered.net/sw/flow-tools
> > 
> > _______________________________________________
> > flow-tools@splintered.net
> > http://www.splintered.net/sw/flow-tools
> > 
> 
> 
> 
> -------------------------------------------
> William Emmanuel S. Yu
> Ateneo Campus Network Group (AteneoCNG)
> email  :  wyu at ateneo dot edu
> web    :  http://CNG.ateneo.net/wyu/
> phone  :  +63(2)4266001-4186
> GPG    :  http://CNG.ateneo.net/wyu/wyy.pgp