several LDAP servers to authenticate ?

[Frank Bonnet]

Hello

I actually use freeradius to authenticate wi-fi users thru the 
chillispot software.

Our freeradius server use our LDAP as backend and everything runs well
now I would like to know if it is possible to use _several_ LDAP servers
with freeradius with a kind of the following mechanism :

If the login is not found on our local LDAP server it will be search on
the next LDAP server in a list and so on until all LDAP servers have 
been searched ?

Thanks a lot
-- 
Regards
Frank