Quick to launch. No agents required. Many configuration options.
Room for Improvement:
Network discovery missed many devices. Network mapping & topology was not accurate and does not update automatically. Alerts can not be configured differently for different device categories (e.g., alert comms guys about routers; network people about switches, etc.). While Orion offers many options, many features must be purchased as separate modules.
It has now been about 3 weeks since we launched the Orion Network Performance Monitor and Netflow Traffic Analyzer. We chose this product based on colleague recommendations.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Apr 29 2012