It's definitely a bear to learn... and you put it right- out of the box it's excellent and does the job. And it can be customized to literally graph anything any way you want it- but the learning curve at that point is, well, extremely steep.
I use it to monitor roughly 50 different routers and switches and the traffic they handle. It's a great program, but it could be better for sure (and I completely agree about the documentation... sigh.)
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Network Firefighter
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