Monitoring/Trending Software -- Which Package(s) do you use?

[Lee Watterworth <lwatterworth () rim net>]

Hi there.

I have been handed the task of finding a monitoring/trending package for our
network and systems. 

I will be looking at the package's collection mechanism for flexibility
(snmp gets, traps, rmon), and the variety/configurability of the reports it
can produce.  The package should be able to provide (configurable) alerts
when threshholds are met/surpassed.

I have been evaluating Concord's eHealth Suite, and would like to evaluate
other options before I commit to a particular package.

Any feedback would be great.

-Lee.