Hi,
I have configured two instances on single server with two diffrent ajp ports (8009 and 8209).
On both port application is runnint independently like http://localhost:8080 and http://localhost:8209

my proxy configuration is :
<VirtualHost *:80>
ServerName server01


ProxyRequests On
#ProxyHTMLLogVerbose On
#LogLevel Info
#LogLevel Debug

<Proxy balancer://escluster>
Order deny,allow
Allow from all
BalancerMember ajp://localhost:8009 route=app-a
BalancerMember ajp://localhost:8209 route=app-b
</Proxy>

ProxyPass / balancer://escluster/ lbmethod=byrequests stickysession=JSESSIONID nofailover=Off
ProxyPassReverse / http://localhost:8009/
ProxyPassReverse / http://localhost:8209/


</VirtualHost>


* But whenever one instances goes down balancer does not swith application on anothe instance. We are running our application at http://192.168.1.200.

Please help.....

Thanks,
Lovelesh