> > I would like to know if I can create mrtg using snmp on how many users are > currently connected? Yes, you can. MRTG can get data not only from SNMP but it can execute an arbitrary program and parse the output. It's a four line format it expects if I remember right. Look at the MRTG docs for details, and a simple shell script with stuff like radwho | wc .. should do the work.
Regards, Rado - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html