FINALLY got snmp workin on my box correctly. Now I can monitor all of my interfaces with mrtg.
I upgraded the snmp rpms that came with Rh 7.2 to the latest versions. (the ucd-snmp ones).
After that I tried and tried to get mrtg to work, never happened. Came across a site that offered an interesting solution...erase your configuration files.
So, I deleted snmpd.conf and restarted snmpd and voila! MRTG sees all of my interfaces and things are workin great!
BTW, here's the site which also offers a bunch on nice MRTG scripts 'n stuff.
http://www.linux-sottises.net/en_mrtg.php
BTW, if you don't want snmp/mrtg there's another nice utility called darkstat that will monitor protocols, traffic, and hosts
check it out here:
http://members.optushome.com.au/dark.../darkstat.html
---Just thought ya'll would like to know...