As far as i understand:
1000Baste-T Gbit/s
is not simply a 1 Gbit/s system,
it is a "Two Times 500 MBit/s" system
4 wire pairs are used, each working at a frequency of 125 MBaud
(exactly 62.5 MHz with transmission of 2 bits per Hz)
- making up for each of the 4 pairs to transmit 125 Mbit/s
-- either only 1-way;
from one to the other end
(accumulating to 500 Mbit/s)
-- simultaneously from both ends to the both others
(accumulating 2 times 500Mbit/s = 1 Gbit/s)
at FTP (your situation) where only one is downloading, you use only the
"half system" (one end to the other,
with vice versa unused -except for some communication)
so your ~480 Mbit/s is very near to the theoretical maximum of 500 Mbit/s
-have in mind, there are several "non payload" data
for ethernet, TCP/IP, ... / frame, packetm ... overhead.
->check it out !
have a ftp server on linux plus windows and start simultaneously ftp
downloads; add the two data rates
JK
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