Netflow question

Carter Bullard carter at qosient.com
Fri Jan 18 15:55:23 EST 2008


Hey Peter,
The aggregators, racluster(), rabins() or ratop() should match them
up.  The RACLUSTER_AUTO_CORRECTION variable in the racluster.conf
file controls it, and I thought it was on by default.  It may have been
flipped.  Could you test this with racluster -f racluster.conf, with  
this in
the file?

RACLUSTER_AUTO_CORRECTION=yes

Carter


On Jan 18, 2008, at 12:27 PM, Peter Van Epp wrote:

> 	What netflow field does argus use to decide that two flows are part
> of the same flow (as this one should be)?
>
> 08-01-11 11:38:58  e         tcp      142.58.101.50.25        ?>
> 71.90.234.102.1254          7       1035
> 08-01-11 11:38:59  e         tcp      71.90.234.102.1254      ?>
> 142.58.101.50.25            9        682
>
> neither ra nor racluster will combine this flow as they should be. I  
> expect
> that means the netflow implementation on our switches (Enterasys)  
> isn't
> including some field that argus needs to decide this is the same  
> flow. If
> I know what field is needed I can see about getting it added to the  
> firmware
> in the switch.
> 	If I can figure out how (or possibly if :-)) wireshark filtering  
> works
> I can probably get an example of the netflow that created this (the  
> entire
> file is several hundred megs unfortunatly).
>
> Peter Van Epp / Operations and Technical Support
> Simon Fraser University, Burnaby, B.C. Canada
>



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