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Article:
  Load Balancing Web Applications
Subject:   Horizontal Clustering with Apache,Tomcat on Windows 2003 server
Date:   2009-08-02 23:42:56
From:   prashant_net
Hi,


I have tried Vertical Clustering Successfully with 4 tomcat instances & 1 apache server for load balancing. But when tried Horizontal Clustering, I am getting these issues:


Setup : 2 Instances each on 2 servers. 1 Apache webserver for load balancing.


Issue : Session replication & Multicast communication using Apache Tribes doesnt work but fail-over happens quite normally when I shutdown one instance.


Does session replication & cluster commnucation using Apache Tribes requires Multicast Mode enabled in Windows 2003 server NLB properties setup?



Thanks,
Prashant Malshette