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Which computer system defined the IPv4 576 byte datagram limit The question seems to be made under the impression that this is a maximum limit defined by some machine that needed to take part. But it is not. It is a minimum requirement. Any hardware/software to participate needs to be able to handle at least a packet of this size. This is done to establish ...


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576 bytes was the standard buffer size in DECnet Phase IV use inside DEC. Why 576? Because a FILES-11 disk block was 512 bytes, you needed a few more bytes for protocol overhead, and the allocation granularity on a PDP-11 memory management unit was 64 bytes. So, a 576-byte buffer allowed the transfer of whole disk blocks without the need to split and ...


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