This is a newbie question I am afraid.  Also this maybe related solely to JGroups.  

Our company has just started to use JBoss Clusters (3.2.3 on Windows XP).  We put all 
our developers machines on one cluster - that is about 20 machines.  We have noticed 
that the network traffic between the machines in the cluster is so huge that our 
network is slowing down considerably.  

We were wondering if there was some way to reduce this traffic without giving up the 
cluster.

For instance,  perhaps we can do without auto-discovery of membership.  Is it possible 
to define a static list of members?  

Since we are not doing anything very sophisticated with our cluster (not clustering 
EJBs or JSP sessions), we want to test a really minimal JGroups configuration (shown 
below).  This assumes there is a static way to define cluster membership.  Can anybody 
see any problems with this?  Any comments will be greatly appreciated.  

anonymous wrote : 
  |     
  |                     
  |             <UDP mcast_addr="228.1.2.3" mcast_port="45506"             
  |                      ip_ttl="1"                      
  |                      ip_mcast="true"
  |                          mcast_send_buf_size="150000"
  |                          mcast_recv_buf_size="80000" 
  |                          ucast_send_buf_size="150000" 
  |                          ucast_recv_buf_size="80000" 
  |                          loopback="false" />
  |                                             
  |               <pbcast.NAKACK 
  |                     gc_lag="50" 
  |                     retransmit_timeout="300,600,1200,2400,4800"
  |                     up_thread="true" down_thread="true" />
  |          
  |     
  | 

thanks, 

chalakanth

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