if one packet size is 256 bytes and netflow discarding header ,
which header if Ethernet header is 14 bytes IP header is 20 Bytes
and UDP header is 8 bytes but the difference is 18 bytes , which does not
match at all.
From: jose orlando t. ribeiro [mailto:firstname.lastname@example.org]
Sent: Saturday, August 11, 2001 1:40 PM
To: Aleks Sheynkman
Subject: Re: Netflow output question. Please help
the packet has 256 bytes of data or 256 bytes of lenght??? if its 256
bytes lenght, the difference is because netflow is discarding headers
and gives the answer in data size.
I'm not an netflow expert...it's just a guess :-)
Aleks Sheynkman wrote:
> Hello !
> I have small problem with the Netflow, I'm trying to send 100 UDP
> through the routers and see what will come out of
> Netflow, each packet is 256 bytes, so in the Netflow, I suppose to
> to see 25,600 bytes sent trough the interface ,
> but in some reason I always getting 23,800 bytes but number of packets
> Netflow reports as a 100 .
> Any idea?
> Here is my configuration :
> Gig in |=============| POS OC3 out POS
> OC3 in |=============| Gig OUT
> ========= | Router A |
> =============================== | Router B | =====================
> Thanks a lot in advance !
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