persistent ldap connection

[Alexei Vasilyev]

Freeradius uses persistent ldap connection.
There are many reasons for this.

But we have freeradius installed on server in dmz, and ldap-server in
inside-zone. It is used just for vpn (1-2 times per day).
Cisco PIX destroyes not used connections, so freeradius need to
reconnect to ldap server.
But freeradius detects lost connection for 5 minutes:

Tue Dec  6 03:40:33 2005 : Error: rlm_ldap: ldap_search() failed: Timed
out while waiting for server to respond. Please increase the timeout.
Tue Dec  6 03:43:03 2005 : Error: rlm_ldap: ldap_search() failed: Timed
out while waiting for server to respond. Please increase the timeout.
Tue Dec  6 03:45:33 2005 : Error: rlm_ldap: ldap_search() failed: Timed
out while waiting for server to respond. Please increase the timeout.
Tue Dec  6 03:46:45 2005 : Error: rlm_ldap: ldap_search() failed: LDAP
connection lost.
Tue Dec  6 03:46:45 2005 : Info: rlm_ldap: Attempting reconnect

How can I configure freeradius to reconnect to LDAP for each request?

Thanks.

-- 
Best regards,
Alexei Vasilyev