Can you confirm that you've tried performing the factory-reset from a different network?
It's vital to the factory-reset process that the ON100 be plugged into the network (on it's LAN port, not MON), on a network that provides DHCP and has working internet, with HTTP/HTTPS not blocked for the ON100 so that it can download the correct firmware. You only need to press the reset button for 10+ seconds, but it has to be at least 10 full seconds. After that, the unit should automatically power-cycle and then proceed to download a new factory load, which could take up to 15 minutes to download.
Article ID:4018 Monitor Web Services on a Device on Cisco OnPlus Portal
Objective Event Monitors are mainly used to monitor the device in order
to provide notifications to the technicians in a timely manner if there
are any problems with the device perfor...
Article ID:3884 Monitor Duplicate IP on OnPlus100 Objective The
Duplicate IP monitor is one of the event monitors on the OnPlus100
device to check the network performance. Duplicate IP monitor checks
whether more than one device in the network uses the sa...
Article ID:3986 Monitor Host Performance with Internet Contol Message
Protocol (ICMP) for a Device on Cisco OnPlus Portal Objective Event
Monitors are mainly used to monitor the device in order to provide
notifications to the technicians in a timely manne...