If all you need to do with MRTG is monitor ethernet interfaces,
running a full blown SNMP implementation
is a bit overkill. All the data you need is sitting in /proc/net/dev
anyway and you can fetch it out with this
simple program written for MRTG available here:
http://sourceforge.net/projects/mrtg-eth/
Thanks Fred, I'll try that. However I do need to monitor routers.
I just thought a first step to see how mrtg works would be to try
the host interfaces.
John