Donald Becker wrote:

> 10baseT is so robust that I've seen it work over miswired cables that had no
> DC connection, only the mispaired cables acting as a 1:1 transformer.

And I've seen 10BaseT working with a cable with a damaged connector
where one pin didn't make contact.

> But when you negotiate up to 100baseTx the link stops working.

And that is basically a pitfall or misfeature of the autonegotiation,
namely that the negotiation takes place in a robust modulation format
and then the card tries to switch to a less robust mode.

Tom
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