| Author |
Full-duplex vs. Half-duplex
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| capac 2002-08-22, 12:15 pm |
| My book says that ethernet is a half-duplex technology! I don't understand. | |
| davidbeecken 2002-08-22, 3:00 pm |
| It can operate at both. | |
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| twister166 2002-08-22, 3:30 pm |
| Ethernet is half-duplex by nature: henced the
CSMA/CD. It has four wires, one pair is used to transimitt and collision detect, one pair is used to recieve and collision detect.
You can only achieve full duplex if the ethernet is operating under point to point mode which means that there is only two node on the same collision domain. As where the 2 pairs of wire can independantly send and recieve simutaniously.
If you don't understand the terms that I just used, you will need to read more books.
Good luck! | |
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| that explaination i understand fine. Thank you. | |
| HOOLIGAN 2002-08-22, 7:32 pm |
| 10base2 and 10base5 are half duplex as its just one wire. 10baseT can be half or full. it is usually the switch or nic that decides whether it operates af full or half. hubs can not operate at full. | |
| darthfeces 2002-08-22, 10:14 pm |
| either you hard code it
or the devices on each end
switch / hub
nic
have to support auto negotiaton.
they do this by using a "fast link pulse"
to probe each other's capabilites and negogiate a match. |
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