Contains where the federation boundary begins.
federationBoundary
This attribute is accessible only through LDAP.
The tree name for all DNS-rooted trees is T=DNS. This attribute returns the full context for a DNS-rooted tree, and the full context contains the external references, such as dc=novell, dc=com. The namingcontexts attribute on the root DSE will also contain the federation boundary.
For help in understanding the attribute definition template, see Reading NDS Attribute Type Definitions.