Ethereal-users: Re: [Ethereal-users] Percentage Utilisation of a trunk port

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

From: "ronnie sahlberg" <ronniesahlberg@xxxxxxxxx>
Date: Mon, 13 Mar 2006 16:09:33 +1100
Ethereal can not calculate this.

However   IF you have a flow of data where many full sized segments are sent towards that link back to back
you can estimate both the maximum link bandwidth as well as the average percentage utilization of that link by studying the
interframe gap between ACKs coming back.

It is very timeconsuming and boring job   but it is possible.


maybe when we have fixed all the bugs   someone could add expert code to ty to estimate for every tcp session the bandwidth of the slowest link on the path and the percent utilization it has.



On 3/13/06, Keith French <keithfrench@xxxxxxxxxxxxx> wrote:
If you have a trunk between two switches spanned, is there any way you can calculate the percentage utilisation of that trunk (e.g. 100M) from an Ethereal trace?
 
I know that from the summary screen you can get average packets/s & average packet size. So there must be some way of calculating the utilisation as a percentage of the 100M port?
 
Any ideas?
 
Keith French.

No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 268.2.1/279 - Release Date: 10/03/2006


_______________________________________________
Ethereal-users mailing list
Ethereal-users@xxxxxxxxxxxx
http://www.ethereal.com/mailman/listinfo/ethereal-users