password failover

[jonr at destar.net]

Hello,

How do I set up a freeradius server so that if the password fails for  
the primary radius server it tries the secondary for the password. In  
my scenario, the primary is up and servicing requests, but the  
password for the device is incorrect. Now the device looks to the  
secondary to get authorized and the secondary holds the correct secret  
for the device.

I have looked at fail-over and load-balancing but am not sure if  
either of these are what I am looking for. Can someone tell me what I  
am looking for and I can do the rest.

Thanks for any help,

Jon