On 25/05/2023 19:47, Paul Koning via cctalk wrote:
Not only that, but all correctly implemented GigE devices will fall back not 
just to 100 but also to 10 Mb/s.  That's part of standards conformance, and 
from what I can tell even low cost devices like D-Link or Netgear do this.  
Yes, including half duplex mode.


In ~1997 my ISP provided a Terajet 410 and that was very fussy about what it would talk to; I couldn't get it to talk to my PC or laptop at the time at 100MB/s ... in the end I just connected to it via a small DEChub at 10MB/s and it worked perfectly.


Right now my motherboard has a 2.5GB/s ethernet port and it needed poking with ethtool to autonegotiate at 1Gbps with a TP-LINK TL-SG116. No idea why yet and I probably won't know until I have a chance to power both off and prod.


So your statement about "correctly implemented GigE devices" is technically correct (the best kind of 'correct'!) but I have yet to be convinced that it's not describing the null set :-)


Antonio


--
Antonio Carlini
anto...@acarlini.com

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