28 Mar
2022
28 Mar
'22
12:08 p.m.
On Mar 28, 2022, at 2:12 PM, Joseph S. Barrera III via
cctalk <cctalk at classiccmp.org> wrote:
That was the ALOHA network, which inspired Ethernet but was not Ethernet.
The differences are quite crucial. ALOHA is a broadcast radio packet network, which
doesn't have collision detect and probably not carrier sense either. So it's
about 1/3rd of Ethernet -- just MA. :-) A consequence is that the theoretical channel
capacity is also about 1/3rd; ALOHA tops out around 30% of data rate, while Ethernet --
thanks to CS and CD -- can reach pretty much the full wire capacity.
paul