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Hardware Thread, Ethernet splitters in Technical; Has anyone ever used these before? They basically split one network point into two. These sound ideal for a few ...
  1. #1

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    Ethernet splitters

    Has anyone ever used these before? They basically split one network point into two.

    These sound ideal for a few of our classrooms. We only have two network points in each classroom and as we now have a few spare PCs, I have been asked if we can relocate a small number of them around the school. Unfortunately this means we have a lack of network points. We don't have the budget to start adding more points either.

    Do you think it'd cause any problems if I used them in a few classrooms?

    Cheers!

  2. #2
    richard
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    Re: Ethernet splitters

    Couldn't you use a small 5 port switch instead?

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    plexer's Avatar
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    Re: Ethernet splitters

    If using 100mbit ethernet you will not notice any problems caused by using one of these.

    Ben

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    Re: Ethernet splitters

    Ethernet splitters are bad news.
    Cat5 is twisted pair for a reason - the wires are paired so that cross-talk and electrical noise are reduced. You may as well use some old bell wire and expect problems.

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    limbo's Avatar
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    Re: Ethernet splitters

    I think the way it works is that ethernet often only uses four of the eight cores in cat 5 anyway so it just takes the spare four and makes a new socket out of it.

    So in theory if there is enough slack you could do it yourself - but it may be cheaper this way than buying the new modules and face plates.

    I think that is right anyway - and the only downside is that it will not duplex.

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    Re: Ethernet splitters

    Quote Originally Posted by richard
    Couldn't you use a small 5 port switch instead?
    The reason I decided not to do something like this is cost. I can get hold of ethernet splitters for around £4 each (maybe less).

    @CyberNerd

    I suspected there might be issues, which is why I asked here first for confirmation. It's a shame... other then that, they are sooo ideal.

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    plexer's Avatar
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    Re: Ethernet splitters

    We have been using one in an ict suite for the last few years with no problems.

    They still keep it twisted and untiwst no more than a normal termination would.

    If you want to try em pm me you school address as I have a pair lying around doing nothing.

    Ben

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    Re: Ethernet splitters

    Have used them quite a bit on our network and never had a problem with them. Got me out of some sticky problems sometimes.
    For obvious reasons don't try POE on them !!

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    Re: Ethernet splitters

    We are a network company and have supplied them for years. THEY WILL DUPLEX! and they do use the spare pairs (croostalk noise - not an issue). The only downside is that if you ever go to a gig it will not work as gig uses all the pairs!!!

    Use them they are great!

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    Re: Ethernet splitters

    ok, heres some info about how twisted pair works:

    http://www.cirris.com/testing/twisted_pair/twist.html
    http://en.wikipedia.org/wiki/Twisted_pair

    but like I said, bell wire also 'works'.

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    Re: Ethernet splitters

    so what happems when you use power over ethernet?

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    Re: Ethernet splitters

    so what happems when you use power over ethernet?
    Nothing special, it won't work over a splitter 'cos like someone has already said about the cores. I think POE uses the different cores.

    http://www.olotwireless.net/catala/poe.htm

    If you fancy having a bash yourself.... :-)

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    Re: Ethernet splitters

    I actually meant with the crosstalk / noise @ cybernerd. I do understand how it works but thanks anyway Matt

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    Re: Ethernet splitters

    PoE uses pins 4 and 5 plus 7 and 8. So Pair 1 and Pair 4 respectively. What pins do the splitters use?

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    Re: Ethernet splitters

    Quote Originally Posted by Geoff
    PoE uses pins 4 and 5 plus 7 and 8. So Pair 1 and Pair 4 respectively. What pins do the splitters use? )
    they use the same i think

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