We've been using OpenNMS for about three years and love it.
Not quite 1000 nodes.
We outsource all the admin & dev for it to a local guy which probably takes less than 5 hours per month.

Let me know if you want to chat to our admin guy (I've bcc'd him, so he might want to chime in anyway).

Shane Hobson

See our latest news here : Velocity Networks is sold to WEL Networks

On 30/08/2011, at 10:18 PM, Jonathan Brewer wrote:

Hi Folks,

If you had it all to do over again, what would you use for network monitoring: Nagios, OpenNMS, or something else entirely?

I care about availaility, latency, loss, jitter, and trap handling for interface up/down, loss of power, etc. Sensible behavior in situations where parent routers/links are flapping is also important.

I would very much appreciate input from folks monitoring 1000+ network elements.



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