in case you missed it, jalasoft just dropped a new tool called the xian snmp device simulator . going by the details, it might take you longer to type the name than to run the utility -- especially since most of the configuration is all wizard-driven. it supports snmp v1, v2 and v3, and it simulates myriad devices including: Cisco Switches Cisco Router Cisco Firewalls Cisco VPN Concentrators Cisco Wireless devices 3Com Switches HP Pro curve Switches F5 Big Ip Nortel APC UPS whether you're an operations manager 2007 shop, an operations manager 2012 shop, or don't use operations manager at all, this tool will still be valuable for testing snmp. over the years, simulating snmp has come up many times so it's great to see something this nice -- for free! if you want details, click HERE to check out their blog post.