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Hardware Thread, Data Splitters !! in Technical; Guys can you help?? I have brought some (4) RJ45 data splitters. They are small boxes with 3 RJ45 ports ...
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    jamin100's Avatar
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    Data Splitters !!

    Guys can you help??

    I have brought some (4) RJ45 data splitters. They are small boxes with 3 RJ45 ports on them. The idea is that i can turn 1 socket outlet into 2.

    I've used similar to these in the past with no problems. The only thing is i cant get these new ones to work.. I've tried patch cables and crossover cables and still can't get any of them to work.

    Anyone have an idea?

    I'll attach a pic so you get a better idea of what i mean.

    Thanks
    Ben
    Attached Images Attached Images

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    jamin100's Avatar
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    Just figured out that they don't work on gig ethernet and all my switches are gigabit...

    Ok.. so now i have to find another way around my problem...

    I need to turn 1 outlet into 2. I cant use a switch because there are no spare power outlets near by.

    Does anyone have any ideas?

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    apeo's Avatar
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    Just wondered, have you tried directly plugging the splitter into a switch or have you just tried outlets?

    EDIT: Nevermind Lol.

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    apeo's Avatar
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    How about stick the switch in the comms room i.e. 1 gig line into mini switch and patched to desired port.

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    Geoff's Avatar
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    Also if the switch is managed, try forcing the port speed to 100mbit.

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    kerrymoralee9280
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    Apeo's method 'should' work in theory. Geoff's too.

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    jamin100's Avatar
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    Switches are DLINK DGS-1248T so i think they are unmanaged.

    I'll adding a small 10/100 switch onto the Gigabit and see what happens.

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    tech_guy's Avatar
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    Do you have to put one at each end of the connection? We've got similar ones and they only work in pairs.
    Last edited by tech_guy; 8th April 2008 at 04:14 PM.

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    Correct.

    If you only use 1 (IE, turn 1 port into 2) you end up with a passive hub in that whichever machine is used first gets the connection.

    If you use them in pairs like you're supposed to, it effectively splits the pairs on both sides allowing two connections along 1 cable. (Cat5E will give you two instances of 100mbit, but I doubt you'll get 2x1Gbit unless you use Cat6)

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    dgsmith's Avatar
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    Quote Originally Posted by kmount View Post
    Correct.

    If you only use 1 (IE, turn 1 port into 2) you end up with a passive hub in that whichever machine is used first gets the connection.

    If you use them in pairs like you're supposed to, it effectively splits the pairs on both sides allowing two connections along 1 cable. (Cat5E will give you two instances of 100mbit, but I doubt you'll get 2x1Gbit unless you use Cat6)
    I don't think 1Gb is at all possible with splitters as it uses all 4 pairs? I have made splitters myself with some spare cat5 cable and rj45 endings.. much cheaper than buying them in! We did have some problems though when using them for printers and workstations on the same one (the data seemed to spill over from the workstation onto the printer connection, so the printer printed endless sheets of garbage untl there was no paper left).

    As mentioned before, to make full use of this method, you will need one at each end, so each of the pairs (orange/green and blue/brown) are plugged into their own port in the switch end, hence 2 separate connections. Bear in mind 100mb uses lines 1,2,3 and 6, so providing you have these same ones covered by the brown and blue pairs, it should "work".

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    actech's Avatar
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    I'm using something similar to them with a D-Link DGS 1224T Switch and have no problems. Sounds stupid but are they definately matching pairs. We have ones that area for two computers and some for a computer and a phone. The internal division of the wiring in the splitter is different.

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    SYNACK's Avatar
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    Quote Originally Posted by actech View Post
    I'm using something similar to them with a D-Link DGS 1224T Switch and have no problems. Sounds stupid but are they definately matching pairs. We have ones that area for two computers and some for a computer and a phone. The internal division of the wiring in the splitter is different.
    Agreed, these must be used in pairs as they are passive devices that effectively split a single 4 pair cable into two two pair cables. One at each end and you should be fine. I have used these before and personally find them to be far more trouble than they are worth as they clutter up the switching cabinet and are prone to coming loose far more often than the same setup without them but it is cheaper than rewiring properly.

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    FN-GM's Avatar
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    Wouldn’t it make more sense to put a little switch where you want 2 connections?

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    localzuk's Avatar
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    Quote Originally Posted by FN-Greatermanchester View Post
    Wouldn’t it make more sense to put a little switch where you want 2 connections?
    Depends if you have spare power sockets, and reckon it won't randomly be turned off. I use splitters in 2 places in school as there are limited power sockets, and staff would turn things off...

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    FN-GM's Avatar
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    Fair point, we are lucky here most was re-wired a few years back so we dont have that problem.

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