I've been doing quite a bit of work (for fun) on getting SNMP monitoring updated to include all my devices attached to the network.  I was using mrtg before, but now I'm upgrading to rrdtool.  Slowly. =)

In particular:

• My WRT54GS (version 1.0) was upgraded to ddwrt for SNMP support.  This took some time to do properly, and for me to test for stability.  It was key that there be no impact on my existing production environment.   (I've been holding out on the retail firmware...)  The latest v23 SP1 was finally deployed on the device today (Aug 17th).
• My Dell PowerConnect 27xx switch is now also supported
  • Via http://www.iqcc.se/ - Nice perl script which collects the RMON data thru the HTTP interface and records it into the rrdtool database (redundant term, but oh well.)  I'm still fiddling with this... =)
  • I also noticed that netmrg has stuff in the SVN tree (http://svn.netmrg.net/trunk/contrib/powerconnect27xx/powerconnect27xx.php) that collects information and logs it.
• Started playing with WMI collection to my Windows servers to collect more information, beyond the NIC information.

I'll post some more details later =).