This object holds the IPv4 address of the router that is either failing to send NetFlow data or has just resumed sending it, per the description covering both conditions this object is used for. Admins use it in NetFlow-related traps to identify exactly which router in their network has a data-export problem. A trap carrying router address 10.1.1.1 tells the admin that specific router has stopped exporting NetFlow, likely blinding Peakflow to traffic on that path.