Mailing List Archive

Ntop wrong traffic calculation
How knows ,
Why is ntop reporting "Total traffic" wrong ?
I did a measurement between 2 hosts and I ftp a file to host A
of 158.5 Mb and then from host B to A a file of 88.4Mb.
For me total traffic is 246.9Mb and not what your program reports
the double value.

Local IP Traffic
Host IP Address Data Received Data Sent
omcldb 15.204.12.23 158.5 MB 64.2 % 88.4 MB 35.8 %
vrede 15.204.44.11 88.4 MB 35.8 % 158.5 MB 64.2 %
Total Traffic Data Received Data Sent Bandwidth
493.9 MB 246.9 MB 246.9 MB 46.7 Kbps

The calculation one receive other transmit so total traffic should
be 246.9MB and not 493.9 MB

Why is it calculated a double value ?
Regards
Jac
Re: Ntop wrong traffic calculation [ In reply to ]
As far as I can see, it's not a double value.

Data Sent = 246.9Mb + Data Received = 246.9Mb = 493.9Mb

Total Traffic is the value of data sent + data received, ie. Total amount of traffic going in & out.

>>> jacengel@home.nl 04/05/2001 01:10:07 >>>


How knows ,
Why is ntop reporting "Total traffic" wrong ?
I did a measurement between 2 hosts and I ftp a file to host A
of 158.5 Mb and then from host B to A a file of 88.4Mb.
For me total traffic is 246.9Mb and not what your program reports
the double value.

Local IP Traffic
Host IP Address Data Received Data Sent
omcldb 15.204.12.23 158.5 MB 64.2 % 88.4 MB 35.8 %
vrede 15.204.44.11 88.4 MB 35.8 % 158.5 MB 64.2 %
Total Traffic Data Received Data Sent Bandwidth
493.9 MB 246.9 MB 246.9 MB 46.7 Kbps

The calculation one receive other transmit so total traffic should
be 246.9MB and not 493.9 MB

Why is it calculated a double value ?
Regards
Jac
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RE: Ntop wrong traffic calculation [ In reply to ]
i think that i am also confused.
if you send 500k down the pipe, it is 500k of traffic no matter where it
goes.
even if it is received in 100 places.
not the 500k that you sent plus the same 500k that was received.
or in the abobe case, 500k times 100 [50mb]

what am i missing???


= = = = = = = = = = = = =

mark.rippe@cox.com

"The ships hung in the sky
in much the same way
that bricks don't."

Hitchhikers Guide to the Galaxy
Douglas Adams

----------------------------------------------------------------------------
---------------------------


> -----Original Message-----
> From: Matthew Seddon [SMTP:MSeddon@mercantile.co.za]
> Sent: Friday, May 04, 2001 8:31 AM
> To: ntop@mixer.unipi.it
> Subject: Re: [Ntop] Ntop wrong traffic calculation
>
> As far as I can see, it's not a double value.
>
> Data Sent = 246.9Mb + Data Received = 246.9Mb = 493.9Mb
>
> Total Traffic is the value of data sent + data received, ie. Total amount
> of traffic going in & out.
>
> >>> jacengel@home.nl 04/05/2001 01:10:07 >>>
>
>
> How knows ,
> Why is ntop reporting "Total traffic" wrong ?
> I did a measurement between 2 hosts and I ftp a file to host A
> of 158.5 Mb and then from host B to A a file of 88.4Mb.
> For me total traffic is 246.9Mb and not what your program reports
> the double value.
>
> Local IP Traffic
> Host IP Address Data Received Data Sent
> omcldb 15.204.12.23 158.5 MB 64.2 % 88.4 MB 35.8 %
> vrede 15.204.44.11 88.4 MB 35.8 % 158.5 MB 64.2 %
> Total Traffic Data Received Data Sent Bandwidth
> 493.9 MB 246.9 MB 246.9 MB 46.7 Kbps
>
> The calculation one receive other transmit so total traffic should
> be 246.9MB and not 493.9 MB
>
> Why is it calculated a double value ?
> Regards
> Jac
> _______________________________________________
> Ntop mailing list
> Ntop@listmanager.unipi.it
> http://listmanager.unipi.it/mailman/listinfo/ntop
>
> _______________________________________________
> Ntop mailing list
> Ntop@listmanager.unipi.it
> http://listmanager.unipi.it/mailman/listinfo/ntop
RE: Ntop wrong traffic calculation [ In reply to ]
Mark,
I fully agree ... waiting what Luca is saying about it.

-----Original Message-----
From: ntop-admin@mixer.unipi.it [mailto:ntop-admin@mixer.unipi.it]On
Behalf Of Rippe, Mark (CCI-Warwick)
Sent: Friday, May 04, 2001 3:39 PM
To: 'ntop@mixer.unipi.it'
Subject: RE: [Ntop] Ntop wrong traffic calculation


i think that i am also confused.
if you send 500k down the pipe, it is 500k of traffic no matter where it
goes.
even if it is received in 100 places.
not the 500k that you sent plus the same 500k that was received.
or in the abobe case, 500k times 100 [50mb]

what am i missing???


= = = = = = = = = = = = =

mark.rippe@cox.com

"The ships hung in the sky
in much the same way
that bricks don't."

Hitchhikers Guide to the Galaxy
Douglas Adams

----------------------------------------------------------------------------
---------------------------


> -----Original Message-----
> From: Matthew Seddon [SMTP:MSeddon@mercantile.co.za]
> Sent: Friday, May 04, 2001 8:31 AM
> To: ntop@mixer.unipi.it
> Subject: Re: [Ntop] Ntop wrong traffic calculation
>
> As far as I can see, it's not a double value.
>
> Data Sent = 246.9Mb + Data Received = 246.9Mb = 493.9Mb
>
> Total Traffic is the value of data sent + data received, ie. Total amount
> of traffic going in & out.
>
> >>> jacengel@home.nl 04/05/2001 01:10:07 >>>
>
>
> How knows ,
> Why is ntop reporting "Total traffic" wrong ?
> I did a measurement between 2 hosts and I ftp a file to host A
> of 158.5 Mb and then from host B to A a file of 88.4Mb.
> For me total traffic is 246.9Mb and not what your program reports
> the double value.
>
> Local IP Traffic
> Host IP Address Data Received Data Sent
> omcldb 15.204.12.23 158.5 MB 64.2 % 88.4 MB 35.8 %
> vrede 15.204.44.11 88.4 MB 35.8 % 158.5 MB 64.2 %
> Total Traffic Data Received Data Sent Bandwidth
> 493.9 MB 246.9 MB 246.9 MB 46.7 Kbps
>
> The calculation one receive other transmit so total traffic should
> be 246.9MB and not 493.9 MB
>
> Why is it calculated a double value ?
> Regards
> Jac
> _______________________________________________
> Ntop mailing list
> Ntop@listmanager.unipi.it
> http://listmanager.unipi.it/mailman/listinfo/ntop
>
> _______________________________________________
> Ntop mailing list
> Ntop@listmanager.unipi.it
> http://listmanager.unipi.it/mailman/listinfo/ntop
_______________________________________________
Ntop mailing list
Ntop@listmanager.unipi.it
http://listmanager.unipi.it/mailman/listinfo/ntop
RE: Ntop wrong traffic calculation [ In reply to ]
Matthew
The explanation of Mark makes it really clear what I mean ...
see reply of Mark.
Jac

-----Original Message-----
From: ntop-admin@mixer.unipi.it [mailto:ntop-admin@mixer.unipi.it]On
Behalf Of Matthew Seddon
Sent: Friday, May 04, 2001 2:31 PM
To: ntop@mixer.unipi.it
Subject: Re: [Ntop] Ntop wrong traffic calculation


As far as I can see, it's not a double value.

Data Sent = 246.9Mb + Data Received = 246.9Mb = 493.9Mb

Total Traffic is the value of data sent + data received, ie. Total amount of
traffic going in & out.

>>> jacengel@home.nl 04/05/2001 01:10:07 >>>


How knows ,
Why is ntop reporting "Total traffic" wrong ?
I did a measurement between 2 hosts and I ftp a file to host A
of 158.5 Mb and then from host B to A a file of 88.4Mb.
For me total traffic is 246.9Mb and not what your program reports
the double value.

Local IP Traffic
Host IP Address Data Received Data Sent
omcldb 15.204.12.23 158.5 MB 64.2 % 88.4 MB 35.8 %
vrede 15.204.44.11 88.4 MB 35.8 % 158.5 MB 64.2 %
Total Traffic Data Received Data Sent Bandwidth
493.9 MB 246.9 MB 246.9 MB 46.7 Kbps

The calculation one receive other transmit so total traffic should
be 246.9MB and not 493.9 MB

Why is it calculated a double value ?
Regards
Jac
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Ntop mailing list
Ntop@listmanager.unipi.it
http://listmanager.unipi.it/mailman/listinfo/ntop

_______________________________________________
Ntop mailing list
Ntop@listmanager.unipi.it
http://listmanager.unipi.it/mailman/listinfo/ntop