Messages in this thread |  | | From | "Albert D. Cahalan" <> | Subject | Re: Ethernet Error Correction | Date | Thu, 27 Sep 2001 01:26:39 -0400 (EDT) |
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Karel Kulhavy writes:
> Let's say I have two PC's, with ethernet NIC's. An atmospherical optical link > (full duplex) is between them, connected via AUI. The optics goes crazy when > there is a fog of course. But dropping a single bit in 1500 bytes makes a lot > of mess. There is also unsused src and dest address (12 bytes) which is > obvious and superfluous. What about kicking the address off and putting some > error correction codes (like Hamming) into it and putting the cards into > promisc mode? It would make the link work on bigger distance and on thicker > mist. We could even dynamically change the ECC/data ratio for example with > Reed Solomon Codes. Ethernet modulation is strong gainst sync dropouts so the > bits usually remain their place, just some of them happen to flip. We could > also kick the "lenght" field because end of packet is recognized by a pulse > longer than 200ns, not neither by ECC nor by the length (am I right?).
Do something like RAID 5 over multiple packets. Then you can handle cards that just drop corrupt packets. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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