Methods, apparatus and systems are provided for assigning Fiber Channel Domain identifiers with an iSNS Server, a Fiber Channel over Ethernet device interconnection apparatus controller (FIAC), and a Fiber Channel over Ethernet device interconnection apparatus (FIA). A Request Domain Identifier iSNS protocol message is sent from a FCoE device interconnection apparatus controller (FIAC) to a iSNS Server. A Fiber Channel Initialization Protocol (FIP) Fabric Login (FLOGI) frame is received from a Fiber Channel over Ethernet (FCoE) device by a FCoE device interconnection apparatus (FIA). The FIAC assigns a new Fiber Channel address identifier using the Domain Identifier assigned from the Request Domain Identifier response. At the FIAC, a FIP link service accept (LS_ACC) response is transmitted to the FIP FLOGI comprising the newly assigned Fiber Channel address identifier at the FIAC. At the FIA, the FIP LS_ACC is forwarded to the FCoE device that transmitted the FIP FLOGI frame.