I have this same problematic, since none solutions, i have an freeradius 2.x as authentication Server with backend Sql for user database on a Linux Centos 6.7 final, configurations and authentications of users with EAPs and CHAP PAP are a success, i want to perform concurent login cheking, i read after many many searchs that it is possible with radutmp or rlm_sql, my first question does Ruckus controller are compatible with checkrad.pl How simul count query of sql work Hellllllpppppppp