A flit-based packetization approach is used for transmitting information between electronic components. A protocol stack can generate transaction layer packets from information received from a transmitting device, assemble the transaction layer packets into one or more flits, and protect the flits with a flit-level cyclic redundancy check (CRC) scheme. The assembled flits can be transmitted across one or more serial point-to-point interconnects in a link connecting the transmitting device to a receiving device. The protocol stack can protect flit information sent across each point-to-point interconnect with a lane-level interleaved forward error correction (FEC) scheme.