Packet loss computation in non-ESP flows

[Shilpa Bansod]

Hi all,
I cannot seem to find the code that actually computes packet loss. Any
pointers would be appreciated. I understand that the code might be spread
across files, hence any keywords would do too!

Thanks,
-Shilpa

On Mon, 1 Oct 2001, Carter Bullard wrote:

> Hey Shilpa,
>    Well, there are three basic mechanisms that argus
> uses to report on packet loss/retransmission.  The
> first is that argus has a complete TCP state machine
> and is using that to determine drops and retransmitted
> packets.  The second is to track monotonically
> increasing sequence numbers when they exist.  Argus
> does this with ESP and RTP flows.  And the third
> scheme is to enforce symmetric reporting for strict
> request/response protocols, so Argus, when run using
> the -R option (response mode), Argus generates data
> that allows for easy calculation of packets lost.
> This mode allows for you to calculate drops for ICMP
> echo, traceroute, dns, ntp, portmapper, netbios, etc ...
> 
> Carter
> 
> Carter Bullard
> QoSient, LLC
> 300 E. 56th Street, Suite 18K
> New York, New York  10022
> 
> carter at qosient.com
> Phone +1 212 588-9133
> Fax   +1 212 588-9134
> http://qosient.com
> 
> > -----Original Message-----
> > From: owner-argus-info at lists.andrew.cmu.edu 
> > [mailto:owner-argus-info at lists.andrew.cmu.edu] On Behalf Of 
> > Shilpa Bansod
> > Sent: Monday, October 01, 2001 1:42 PM
> > To: argus-info at lists.andrew.cmu.edu
> > Subject: Packet loss computation in non-ESP flows
> > 
> > 
> > Hi all,
> > I have been trying to figure out how Argus computes packet 
> > loss rate in
> > non-ESP flows but have not been able to do so as yet. I would greatly
> > appreciate any insight into this. 
> > 
> > Thanks!
> > -Shilpa
> > 
> > 
>