Error in ldapsearch??

[Klinger Christian]

Hello List

The Problem:
I make some LDAP Queries (Zope External Method) over a large network!
Sometimes i got a "good" result but sometimes i got the error 
"Can´t contact LDAP-Server"!

Is it possible to get over on a "timeout limit"?
Is it possible to trace something?


Do you have any tips for me?

Thx in advance

Christian

The "short code of the programm

--snip--
import ldap

server = '10.99.29.9'
admin  = "cn=ldapadmin,o=cnbg,c=de"
passw  = "xxxxxxxx"


l=ldap.open(server)
l.protocol_version = ldap.VERSION3
l.simple_bind_s(admin,passw)

def e_ldapsearch(name,flag):
	basedn = "o=cnbg,c=de"
	sfilter = "(&(objectclass=drupaPerson)(cn=%s))" %name
	res = l.search_s(basedn, ldap.SCOPE_SUBTREE, sfilter) # line 72
	return res
--snip--

The Traceback from Zope:
  __call__<BR>__traceback_info__: ((), {'flag': 'bgdpextranet', 'name': 
  9909040001}, None) 
  Module /opt/Zope/Extensions/e_ldapsearch.py, line 72, in ldapsearch 
  Module ldap.ldapobject, line 421, in search_s 
  Module ldap.ldapobject, line 425, in search_st 
  Module ldap.ldapobject, line 371, in result 
  Module ldap.ldapobject, line 94, in _ldap_call </LI></UL>SERVER_DOWN: 
{'desc': "Can't contact LDAP server", 'info': ''}