<P> The total data size is preserved: 2480 bytes + 2020 bytes = 4500 bytes . The offsets are 0 and 0 + 2480 / 8 = 310 . </P> <P> On a link with an MTU of 1,500 bytes, each fragment results in two fragments: </P> <Table> <Tr> <Th> Fragment </Th> <Th> Total bytes </Th> <Th> Header bytes </Th> <Th> Data bytes </Th> <Th> "More fragments" flag </Th> <Th> Fragment offset (8 - byte blocks) </Th> </Tr> <Tr> <Td> </Td> <Td> 1500 </Td> <Td> 20 </Td> <Td> 1480 </Td> <Td> </Td> <Td> 0 </Td> </Tr> <Tr> <Td> </Td> <Td> 1020 </Td> <Td> 20 </Td> <Td> 1000 </Td> <Td> </Td> <Td> 185 </Td> </Tr> <Tr> <Td> </Td> <Td> 1500 </Td> <Td> 20 </Td> <Td> 1480 </Td> <Td> </Td> <Td> 310 </Td> </Tr> <Tr> <Td> </Td> <Td> 560 </Td> <Td> 20 </Td> <Td> 540 </Td> <Td> 0 </Td> <Td> 495 </Td> </Tr> </Table> <Tr> <Th> Fragment </Th> <Th> Total bytes </Th> <Th> Header bytes </Th> <Th> Data bytes </Th> <Th> "More fragments" flag </Th> <Th> Fragment offset (8 - byte blocks) </Th> </Tr>

Which three are fields contained in an ipv4 header