Why am I seeing optimized simulation failure for the F-tile Ethernet Hard IP with Auto-Negotiation and Link Training (AN/LT) and Dynamic Reconfiguration enabled designs? - Why am I seeing optimized simulation failure for the F-tile Ethernet Hard IP with Auto-Negotiation and Link Training (AN/LT) and Dynamic Reconfiguration enabled designs? Description Due to a problem in the Quartus® Prime Pro Edition software version 25.1.1, you may see optimized simulation failure for the F-tile Ethernet Hard IP with Auto-Negotiation and Link Training (AN/LT) and Dynamic Reconfiguration enabled designs. This failure is seen for the 400G-8 Example Design variant that has optimized simulation option enabled in the Quartus GUI parameter. Resolution For workaround for this problem for optimized simulation in the Quartus® Prime Pro Edition software version 25.1.1, you will need to set LT failure response =1 at the beginning of your simulation testbench. Register Address Bit Name Description 0x2c0 12 LT failure response 1 = Upon LT failure, PHY will go to data-mode 0 = Upon LT failure, PHY will restart AN if AN is enabled, else PHY will restart LT This problem will be fixed in a future Quartus® Prime Pro Edition software version. Custom Fields values: ['novalue'] Troubleshooting 30020115656 False ['F-Tile Ethernet Hard IP'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 25.1.1 ['Agilex™ 7 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']