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From Joe Fernandez <joe.fernan...@ttmsolutions.com>
Subject Re: LDAP Discovery mechanism & round robin choice
Date Thu, 21 Aug 2008 15:58:11 GMT

I haven't looked closely at the LdapNetworkConnector source, but I suspect it
will connect to all the brokers that result from the corresponding LDAP
search operation.  

Joe
http://www.ttmsolutions.com
 

Eric-AWL wrote:
> 
> <networkConnectors>
>       <ldapNetworkConnector uri="ldap://myldap.mydomain.com:389"
>                             base="dc=brokers,dc=mydomain,dc=com"
>                             anonymousAuthentication="true"
>                             searchFilter="(cn=*)"
>                             searchScope="SUBTREE_SCOPE"
>                             />
>    </networkConnectors>
> 
> Ok for uri="failover:(ldap:://ldapserver1,ldap://ldapserver2)" which
> concerns the failover of ldapserver.
> 
> But my question concerned the ldap directory itself, if under "base"
> (dc=brokers,dc=mydomain, dc=com), I put more than one LDAP entries which
> can all be considered as a network broker. Which server will be chosen and
> how ?
> 
> Eric-AWL
> 
> 
> 
> 
> James.Strachan wrote:
>> 
>> 2008/8/21 Eric-AWL <eric.vincent@atosorigin.com>:
>>>
>>> Hi every body
>>>
>>> I'm not an LDAP expert so I expect I don't make too many mistakes in my
>>> explications.
>>>
>>> If we put several server references under the same RDN, does the
>>> discovery
>>> mechanism choose one of them with a round-robin algorithm ?
>>>
>>> What happens if the server associated with this reference doesn't work ?
>>> Does the discovery mechanism choose an other ?
>>>
>>> What happens exactly when we add or remove one reference in the LDAP
>>> directory structure ?
>> 
>> ActiveMQ typically uses the Failover protocol with all discovery
>> mechanisms - so that if a discovered (or static) broker entry is no
>> longer valid the client will auto-reconnect to another broker - you
>> can configure the algorithm to use round robin or random along with
>> various other things...
>> 
>> http://activemq.apache.org/failover-transport-reference.html
>> 
>> 
>> -- 
>> James
>> -------
>> http://macstrac.blogspot.com/
>> 
>> Open Source Integration
>> http://open.iona.com
>> 
>> 
> 
> 

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