freeRADIUS with 2 Active-direcotory

Hi, I use freeRADIUS1.1.6 and samba3 to talk with Active-directory. It can work well. Followed by wiki: http://wiki.freeradius.org/FreeRADIUS_Active_Directory_Integration_HOWTO Now we want to set up 2 active-directory, One is primary, The other is backup. If primary AD down, freeRADIUS can switch to backup AD to do authenticate. Can freeRADIUS or samba support 2 ADs? And how to do? Any comment is appreciated. John --------------------------------- @yahoo.cn 新域名、无限量，快来抢注！