Parallel Line Internet Protocol: Difference between revisions

Revision as of 03:26, 27 March 2007

Revision as of 18:52, 3 April 2007

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Every IP packet is sent over the line by first encapsulating it into a plip packet, which is then sent using the above protocol. The encapsulated packet is as follows:

* packet lenghtlength: 2 bytes, [[little endian]]

* ethernet header (mostly used for backward compatibility)

* the IP packet

* checksum: 1 byte, sum modulo 256 of bytes in the packet

The length and checksum are calculated over the second and third field only, so that for example the actual total length of the packet is three more than the lenghtlength as reported in the first two bytes of the packet.

==See also==