let me share with you some background first, currently my AP has 3 Radius server which mainly for redundancy, incase Radius server A down, server B will take over. but, lately i noticed when my Server A , Server B never take over and i saw some logs which indicating Dead Server .... bla bla bla.
anyone can tell me how to configure AP - Global Properties for redundancy.
Looking at the configuration, the only thing you have to change is to enable the dead radious server list and set it to 1 min which is the minimum. So it would take at least a minute before the ap tries the 2nd radious server. Test it to see how it reacts when server 1 comes back online.
thanks for your information but i noticed if the Radius server is not down , example : when u do a ping command , radius server still replied with packets although Services down . but the Radius server wont fail over to Radius server B . i have encountered this problem which means i need to manually change the server priority .