I have problems to form a cluster when I run Java application on two boxes. The nodes see each other and JGroups tries to build a cluster but something goes wrong. I see messages

   "not member of view ..... discarding it" on one box (Sound), and

   "sender not in table"  - on another box (dmitry-13dcf93a)

I verified that the boxes passed included into jgroups-3.0.6.Final.jar tests: McastReceiverTest/McastSenderTest. The tests worked fine with and without the property -Djava.net.preferIPv4Stack=true. Running two instances of that application on the same box works fine as well. For all these cases I use the same (default) configuration with jgroups UDP. Please see the attached files:

  - infinispan-cache.xml - Infinispan config-file for which JGroups configuration file is resolved to the infinispan-jgroups.xml

  - infinispan-jgroups.xml is default UDP configuration that comes with infinispan-5.1.2

The configuration where it doesn't work:

To build a cluster I start a node on a box called Sound, which is Windows 7 (64 bit)

and then I start the second node on VM dmitry-13dcf93a that runs Windows XP inside VMware workstation on the same box Sound. VM network adapter is Bridged.

The log-files named correspondently. Tests were performed with the following log settings

log4j.logger.org.jboss=INFO

log4j.logger.org.infinispan=TRACE

log4j.logger.org.jgroups=INFO

log4j.logger.org.jgroups.protocol=TRACE

The application does very basic. It creates a manager using configuration files and tries to use replicated cache.

_manager = new DefaultCacheManager(infinispanConfig, false);

_manager.getGlobalConfiguration().getTransportProperties().setProperty("configurationFile", jgroupsConfig);

_manager.start();

Configuration defaultCacheConfig = _manager.getDefaultCacheConfiguration();

Configuration config = new ConfigurationBuilder().read(defaultCacheConfig)

    .eviction().maxEntries(cacheSize)

    .build();

_manager.defineConfiguration(cacheName, config);   

_manager.getCache(cacheName);

So I'm afraid the problem is related to the configuration of boxes where I ran the tests. How can I tell if these boxes miss some requirements? The tests were executed with -Djava.net.preferIPv4Stack=true.  Anything else to try?