Erik Trulsson wrote:
(IIRC a switch or NIC that is set to auto-negotiate, but where the negotiation fails (possibly because the other end is not set to auto-negotiate) will usually revert to 10Mbps/half-duplex, i.e. the original, slowest, Ethernet speed.)
100Mb half-duplex is the default setting in this sort of mismatch. It will 'sort of' work, but you'll find performance is terrible and there will be significant amounts of packet loss. Note too that 1Gb speeds require both sides to be set to autonegotiate -- it's part of the standard for supporting those speeds, so that in the event of transmission difficulties the connection can be gracefully degraded rather than just ceasing to work at all. There's a lot of received wisdom around that wiring down connection speeds is a good idea. That may have been the case 5 or more years ago, when there were certainly some combinations of NIC / network switchmanufacturer that just wouldn't negotiate correctly, but now that 1Gb/s capability is pretty much standard such incompatibilities are
rare. Nowadays, for best results, auto-negotiate. Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW
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