Ethernet CRC32 calculation - software vs algorithmic result

Question

I\'m trying to calculate the Frame Check Sequence (FCS) of an Ethernet packet byte by byte. The polynomial is 0x104C11DB7. I did follow the XOR-SHIFT algorithm

Answer 1

http://en.wikipedia.org/wiki/Cyclic_redundancy_check

has all the data for ethernet and wealth of important details, for example there are (at least) 2 conventions to encode polynomial into a 32-bit value, largest term first or smallest term first.