[c-nsp] SNMP - determining active radius servers

[Mike]

Hi,

     I was wondering if there is an snmp way to determine, from the 
perspective of a cisco router such as the asr1000, how many and which 
radius servers are responding to it? The router will log messages about 
a dead server but if I could pick up on that via snmp it would be very 
handy. I've briefly looked over some mibs and have not yet found 
anything that seems relevant.

Thank you.