[asterisk-users] Linux Software to monitor quality of bandwidth for carrying voip traffic - suggestions please?

[John Todd]

On Dec 11, 2008, at 12:19 AM, Shaun Wingrin wrote:

> Hi,
>
> Would like to run the software to monitor the quality of the  
> bandwidth.
>
> Suggestions welcome?
>
> Thank you.
>
> Shaun


I can't tell you how to monitor quality of bandwidth - that sentence  
doesn't quite make sense, but I'll make some assumptions as to what  
you're really trying to do and say that you want to see what is  
happening with the bandwidth that you do have, and what is using it.

I've used the "rate" package to create simple monitors of traffic  
types which use the widely-understood "tcpdump" filter syntax.  This  
allows me to watch, for instance, all UDP traffic on RTP port ranges,  
or all packets being generated by a certain machine, as long as the  
system in question can "see" all the packets (on a hub, or running on  
the device that is the "router" for the packets.)

I used it a while back to do the IAX2 trunking tests, for instance.

http://s-tech.elsat.net.pl/bmtools/

   bash-3.2# ./rate -v -r 1 -i fxp2 -f "host my.sip.client" -R

or

   bash-3.2#  ./rate -v -r 1 -i fxp2 -f "src net 10.0.0.0/8" -R

JT

---
John Todd
jtodd at digium.com        +1-256-428-6083
Asterisk Open Source Community Director