[NTLUG:Discuss] bandwidth metering and snmp

[jeremyb@univista.com]

hi y'all,
  I've got a client in need of a bandwidth monitoring and alert tool....
they're running an IIS server unfortunately and they fear change.
I tolf them I could plop a Linux machine infront of the IIS server 
to monitor client bandwidth usage and I could whip up a script in perl to 
watch for arbitrary threasholds and notify them via email/pager whenever 
those threasholds are met... cake.  They want to identify heavy uage domains
and
clients.  I can write the script and set the box up but there's just one
problem....
I've never used snmp or any other bandwidth meter-capable solution for that
matter!
 Infact I'm not sure if snmp can do what I want.
 
So to follow up, I've been looking around for Linux oriented snmp
documentation.
I haven't found much yet other then cpan.org module docs which will come in
handy if, indeed,  snmp is the solution.  Have any of you taken on and
completed a task like this
using snmp or some other solution?  I could probably figure this one out on
my own but it never hurts to get input from others.

furthermore,  the metering and scripting/monitoring will be done on the same
box.

thanks,
   Jeremy