Re: Bandwidth measuring tool

[Andreas John <lists@aj.net-lab.net>]

Hello,
I think your question is twofold:

a) Generate Traffic
Have a look at the kernel module "pktgen". It creates UDP only IIRC, but 
the kernel has to do forwarding decisions per packet, so it's a quite 
good way to test a machine. You can saturate a GBit Link with that tool, 
as it works "below the stack"

b) Measure Traffic
Well, many tools and ways exist. Examples

cmdline tools:
 - iptraf
 - bwm

collecting daemons
 - snmpd
 - sysstat (?)

GUIs/Frontends:
 - Cacti
 - OpenNMS
 - MRTG
 - RRD Tool

And, as Wojciech already posted, there a measurement tools like iperf.
'apt-cache search traffic' will shoe you lots of options. Personally I 
would go for a "snmpd + Cacti + pktgen"-solution and probe traffic + 
resource usages.

Keep in mind that "Traffic != Traffic". Usually it's more important to 
check how much packers per second you machine can handle.

rgds,
Andreas



Bernhard Krieger schrieb:
> Hi,
>
> does anyone know a bandwidth measuring/test tool?
>
> I have  to produce more than 150Mbit.
>
> bye
> bernhard