= Update the JGroups Subsystem

The JBoss Server Migration Tool does the following updates to any *jgroups* subsystem configuration found while migrating a server configuration:

* Replaces protocol `FRAG2` with `FRAG3`.

If you prefer, you can set the `subsystem.jgroups.update.skip` environment property to `true` to skip automatic update of the *jgroups* subsystem configuration.

Upon successful migration of the *jgroups* subsystem configuration, you should see the following message in the console:

[source,options="nowrap"]
----
 INFO  Subsystem jgroups updated.
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