max diameter 200m / 100/1000 baseT after the 200m what must exist to reach eg 300m

Discussion in 'Computing and Networks' started by lse123, May 29, 2010.

  1. lse123

    Thread Starter Active Member

    Oct 17, 2006
    I read somewhere that 100/1000 baseT has
    •max segment 100m
    •max diameter 200m
    well this means after 100m needed REPEATER or HUB or SWITCH to reach the 200m? after the 200m what must exist to reach eg 300m?
  2. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    I've run 100Mbit to 1/2 mile by adding a SWITCH every 300ft (~100m). This was a temporary (2 week) concert venue in the middle of nowhere.

    If you cannot get power run to run a switch, use PoE/Power Over Ethernet, and compatible switches. PoE is essentially breaking out the blue and brown pairs, and using Blue for +V and Brown for Ground. At the switch, break out the Blue/Brown, and connect to the power jack needed.

    If your switches need line input power, eg 120/220VAC, then PoE will not work, it is only rated to 48VDC.

    For longer and permanent runs, I'd suggest fiber.

    Used cheap 4 port Linksys Switches inside Waterproof enclosures. I had to replace one in the first week due to theft.
  3. AlexR

    Well-Known Member

    Jan 16, 2008
    Multi-mode fibre is good to about 500 meters. Single node fibre will give you anywhere between 5Km and 50km+ depending on the fibre and light frequency used.
  4. rjenkins

    AAC Fanatic!

    Nov 6, 2005
    The 100m limit is strictly for a single run of copper cable.

    As the others say, using copper with switches each 100m or using fibre you have unlimited overall length.

    I've run Gigabit ethernet around large industrial sites using Cat5e cable and small switches (mounted in wallboxes) as repeaters when required.