This bitmap object records which attributes in this PPPoE profile entry have been explicitly configured, distinguishing them from ones left at their default; setting other profile attributes normally updates this bitmap as a side effect, but explicitly setting JuniSetMap itself overrides both prior bits and any simultaneous side-effect updates, and once a bit is set it can only be cleared by explicitly reconfiguring this object. An admin uses this internally, or via management tools, to distinguish a deliberately configured value from an unset default when auditing or exporting profile configuration. For example, a bit corresponding to juniPppoeProfileMtu being set confirms an administrator explicitly configured the MTU rather than it remaining at its default.