This RowStatus object for a Route-Descriptor-to-ELAN mapping row cannot move to active until lecsRDConfigElanName has an appropriate value, though the agent may auto-fill it from the parent table's default ELAN name. An admin cares because, consistent with the MAC- and ATM-address-based tables, this lets a Route Descriptor mapping activate by inheriting a default rather than always needing an explicit ELAN name set. For example, a new Route Descriptor entry created without an explicit ELAN name will still successfully activate if the parent config table already defines lecsConfigTblDefaultElanName.