nanog mailing list archives

Re: recent internet packet size samples


From: Mark Milhollan <mlm () ftel net>
Date: Thu, 03 Aug 2000 13:32:09 -0700


"Yu Ning" <yuning () cndata com> wrote:
You will find there is some discrepancy between the direct result 581,
and if you calculate probability size from the packets distribution:
[...]
the error is: 615.744-581 = 34 bytes

I haven't checked, but this might be a case of different semantics. 
Where "packets" in the sample distribution is of the entire ip datagram,
but the protocol flow summary is of only the payload data.


I have a question, how to get the packets size stat from a GSR?  We
know dcef is enable default in GSR, can we use dcef to get the stat ?

The flow cache should provide this information on the GSR as well, and
is not otherwise dependent on the forwarding path (dCEF).



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