This flag controls when the password cache created by the
CachePasswords parameter is consulted.
If CacheOnNoReply is set (the
default), then the Access-Request will always be proxied to the remote
RADIUS server, and password cache will only be consulted if there is no
reply from of any of the remote RADIUS servers. If no reply is received
from any of the remote RADIUS servers, and If there is a cached reply that
matches the password and has not exceeded the CachePasswordExpiry time
limit, then the request will be accepted.
If CacheOnNoReply is not
set, then the password cache will consulted before proxying. If there is a
cached reply that matches the password and has not exceeded the
CachePasswordExpiry time limit, then the request will be accepted
immediately without being proxied to any remote RADIUS
server.