What is the max distance for cat5e cables in 1000Mbps (1 Gigabit) Full Duplex mode?


Quoting from Wikipedia:

1000BASE-T (also known as IEEE 802.3ab) is a standard for gigabit Ethernet over copper wiring.

Each 1000BASE-T network segment can be a maximum length of 100 meters (328 feet), and must use Category 5 cable or better (including Cat 5e and Cat 6).

So it's 100 meters (328 feet).

  • It is incredible how the vendors want make you believe that only the cat6 is able to function in 1000Mbps at 100 meters. May 19 '12 at 16:35
  • But can you tell if the cat5e can run in full duplex at distances greater than 10 meters? May 19 '12 at 16:38
  • 4
    Why would the max run length have to take into account network switches? I thought that was only physical runs between, say, a switch and a client.
    – TheLQ
    May 19 '12 at 17:33
  • 9
    Sorry but this is wrong, 100 meters are the length of the collision domain and not end to end. With a switch (very unlikely you are gonna see a Gbit HUB, and you would not be running full duplex over it anyway) it is 100 meters each endpoint to switch. You have to take patch panels, cables from wall jacks etc into account though! May 19 '12 at 21:22
  • 1
    100 meters? In ideal conditions, maybe. In my house, the Cat5e wiring only runs at 100 Mbit speeds, and it's only a few dozen meters long. The Cat6 wiring that I added myself runs at Gigabit speeds. Sep 12 '18 at 16:21

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