The following is wrong: Result The mod_cluster subsystem no longer advertises its availability. mod_cluster subsystem resides within EAP6 instance and does not advertise anything. It should be something like: Result HTTPD balancer no longer advertises its presence to worker nodes and consequently, UDP multicast is not used.
Fixed in revision 502284. Change is not yet visible for review.
Not yet updated.
It is cool on this link: http://documentation-devel.engineering.redhat.com/docs/en-US/Red_Hat_JBoss_Enterprise_Application_Platform/6.1/html/Administration_and_Configuration_Guide/Configure_the_mod_cluster_Subsystem_to_Use_TCP.html ...and I hope it will be propagated correctly both to 6.1.1 documentation and to 6.2 documentation :-)