Half duplex vs full

Ive read that a half duplex configuration will result in the Ethernet sharing the collision domain on that segment. Why is this? I thought if it was half duplex then only one would send at a time and collisions would be avoided?

It makes more sense to me if it was full duplex then signals are going back and fourth simultaneously and collisions would be more likely?

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Comments

jude56g

Setting an interface to full duplex disables the CSMA/CD logic.

This may shed some light. Troubleshooting Ethernet Collisions - Cisco Systems

Also, the switching & bridging section sums this up nicely. Ethernet - Wikipedia, the free encyclopedia

HTH

thedrama

alliasneo wrote: »

Ive read that a half duplex configuration will result in the Ethernet sharing the collision domain on that segment. Why is this? I thought if it was half duplex then only one would send at a time and collisions would be avoided?

It makes more sense to me if it was full duplex then signals are going back and fourth simultaneously and collisions would be more likely?

But. You ignored a significant thing. In full duplex, different set of wires in the cable are used, however, in half duplex, it is performed by
same set of wires therefore data stream from one end collides with the one coming from other end.