Failure to create LDAP connection

.ResourceException: Initializing LDAP directory context failed. Please check LDAP connection properties, including username and password: JBAS011843: Failed instantiate InitialContextFactory com.sun.jndi.ldap.LdapCtxFactory from classloader ModuleClassLoader for Module "org.jboss.teiid:main" from local module loader @9ba6076 (roots: /home/rareddy/testing/jboss-as-7.1.1.Final/modules)
	at org.teiid.resource.adapter.ldap.LDAPConnectionImpl.initializeLDAPContext(LDAPConnectionImpl.java:138)
	at org.teiid.resource.adapter.ldap.LDAPConnectionImpl.<init>(LDAPConnectionImpl.java:73)
	at org.teiid.resource.adapter.ldap.LDAPManagedConnectionFactory$1.getConnection(LDAPManagedConnectionFactory.java:46)
	at org.teiid.resource.adapter.ldap.LDAPManagedConnectionFactory$1.getConnection(LDAPManagedConnectionFactory.java:43)
	at org.teiid.resource.spi.BasicManagedConnectionFactory.createManagedConnection(BasicManagedConnectionFactory.java:70) [teiid-api-8.2.0.CR1-SNAPSHOT.jar:8.2.0.CR1-SNAPSHOT]
	at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.createConnectionEventListener(SemaphoreArrayListManagedConnectionPool.java:761) [ironjacamar-core-impl-1.0.9.Final.jar:1.0.9.Final]
	at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.getConnection(SemaphoreArrayListManagedConnectionPool.java:343) [ironjacamar-core-impl-1.0.9.Final.jar:1.0.9.Final]