There is example of the LDAP configuration in the server configuration file in JBoss EAP 6 with <security-domain name="mcp_ldap_domain" type="default">, but instead of "type" should be "cache-type". Right is <security-domain name="mcp_ldap_domain" cache-type="default">
Fixed topic 5241.
Updated Migration Guide maps: 11863 (6.1) 19236 (6.1.1)
This will be staged here: http://documentation-devel.engineering.redhat.com/docs/en-US/JBoss_Enterprise_Application_Platform/6.2/html/Migration_Guide/sect-LDAP_Security_Realm_Changes.html
The fix is staged here: http://documentation-devel.engineering.redhat.com/docs/en-US/Red_Hat_JBoss_Enterprise_Application_Platform/6.1.1/html-single/Migration_Guide/index.html#sect-LDAP_Security_Realm_Changes