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Wireless Networks Thread, Split a network cable in Technical; Ok While reading an artical in my usuall magazine micromart there was a peice in there about splitting an RJ45 ...
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    alonebfg's Avatar
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    Split a network cable

    Ok While reading an artical in my usuall magazine micromart there was a peice in there about splitting an RJ45 cable into two. I have a hub at home but have just got a new pc and where it is wirless is not good at all. i have already got one cable in but it took me 3 days to do and dont want to do it again. So reading this artical gave me the idea has anyone done this and if so does it work and how fast.
    basicy it works like this
    port 1
    orange/white to pin 1
    orange to pin 2
    green/white to pin 3
    green to pin 6
    port 2
    blue to pin 1 normaly orange/white
    blue/white to pin 2 normaly orange
    brown/white to pin 3 normaly green/white
    brown to pin 6 normail green
    basicly you make two points from one cable hub at one end just save running another cable befor i comit myself and upset the other half if this works there will be less mess she wont have to help and it would take 30mins instead of 6 hours. my question does it work and if so at what speed.

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    webman's Avatar
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    Re: Split a network cable

    Yes I do this at home and works fine. It's a rented house, so all cables are surface mounted and clipped to walls/skirting etc. so I really had to keep these to a ninimum. There's a few picutres on my gallery.

    Connection speeds are 100MB (on 100MB cards and switches, gigabit is not possible as it uses all pairs) but file transfer speeds vary depending on protocol (I use both NFS and SMB/CIFS) but is usually between 6 and 11MB/sec

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    Midget's Avatar
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    Re: Split a network cable

    what's wrong with just using a small switch? They're only £10

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    alonebfg's Avatar
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    Re: Split a network cable

    its not the switch its the cabling and save space looks better i think. thanks webman.

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    Re: Split a network cable

    It does work, I have done it in a few places as a last resort type of setup as its far better to do it the correct way, CAT5e is cheap as chips as are network switches, just get an extra switch and stick it at the end you need it.

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    Re: Split a network cable

    thats ok but sort of plug scokets problem in that area pc monitor xbox wii tv skybox all there and no more plugs not without being silly. Its a kids games room so i have tried it today i dont need silly speeds and it works really well (if i put switch there complaints about more eletric being used ) and kids wont switch it off or play with it. At the moment they have to unplug the rj45 lead and they have broke that twice in two weeks so breaking a switch will be really easy.

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    Re: Split a network cable

    i do it all the time even here at work. works fine.

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    Re: Split a network cable

    We have lots of problems with split cabling at work. Most of the network was cabled with Cat5 and split, and it does often cause problems for us. Less reliable, speed issues, other random issues that magically get fixed if the point is rewired to use all 8 wires.

    However, I imagine that it would be fine to do as a one off, especially at home where it's not going to take quite the battering as work networks do.

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    Re: Split a network cable

    Generally I have only done it in places where A: Running a more than a single cable would be aggrevation, or B: For a printers in an office was an afterthought. (Only 10meg for a printer anyway.)

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    Re: Split a network cable

    Splitting like this can cause problems with managed switches because they sense the two communications channels via the one cable as lots of collisions etc.

    If it's for the home then you will be fine - but I would not do it in School.

    Andrew

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    Geoff's Avatar
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    Re: Split a network cable

    Splitting like this can cause problems with managed switches because they sense the two communications channels via the one cable as lots of collisions etc.
    By that logic, what happens when you plug an unmanaged switch into a managed one?

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    Re: Split a network cable

    Quote Originally Posted by Butuz
    Splitting like this can cause problems with managed switches because they sense the two communications channels via the one cable as lots of collisions etc.
    DOH! You need to split the cable at the hub/switch and connect to two ports!

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    Re: Split a network cable

    Yeah you are going to have problems if you only split it at one end.

    You split it at both and then each connection is plugged into its own switch port.

    Ben

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    Re: Split a network cable

    The unused 4 cables in a Cat5 cable are there for a reason, to decrease crosstalk, an increase in crosstalk would cause a reduction of the signal quality on any cable that was split as in the Micromart article.

    If the signal quality falls below a certain level the network speed would reduce to 10 Mbps through the auto negotiation process.

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    Re: Split a network cable

    Also, although most people will hopefully know this, don't try and use these splitters on 1Gb links or PoE enabled switches!

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