Thanks Honza for your reply. In the mean time I've gone through cpg_overview and programs under test directory. But still I don't have any idea of how to establish communication between two nodes using corosync and how can I form a cluster. I didn't find any documentation in this regard. Can you help me in this? Thanks and regrads Utkarsh Katiyar _______________________________________________ discuss mailing list discuss@xxxxxxxxxxxx http://lists.corosync.org/mailman/listinfo/discuss