The intent is for the high performance datapath to live entirely in FPGA (and the project you're probably thinking of is switching, not routing). The MCU is f

The intent is for the high performance datapath to live entirely in FPGA (and the project you're probably thinking of is switching, not routing). The MCU is for control plane only. Several hundred Mbps between the control and data plane is more than enough for a SSH management CLI and poking registers on the FPGA to move a port to a different VLAN in response to a CLI command or add an ACL rule or something.