The CoaXPress-over-Fiber Device Bridge IP Core allows to connect a CoaXPress Device IP Core to an nGMII (10/25 Gbps Media Independent Interface) bus inside an FPGA. nGMII, as defined in IEEE Std 802.3 Clause 46, is the main access to the 10/25G Ethernet physical layer. Delivered as working reference design (when licensed with S2I CoaXPress Device IP Core) and extensive simulation testbench.