CIR bandwidth monitoring tool for virtual hosts

[David Thorne]

Hi guys,

I have a problem and I don't know if anyone knows of a solution I could 
look at.
The datacentre we use at work sells us our bandwidth using CIR.  I 
monitor this closly using SNMP on each machine and looking at the data 
incoming.

Does anyone know of a monitoring tool, SNMP based or otherwise to help 
me work out exactly which vhost on the machien is using all the 
bandwidth.  Tools like webalizer allow me to see the total bandwidth in 
(say) MB's/GB's used but not as an information rate, which is what I 
need.  I could write a very complex script to analyise the access logs 
and use the size of the file to give me an approximate usage but surely 
there has to be a tool out there that I've just missed.

Dave