Will a 100BaseT splitter work with a 10BaseT network?

Eug

Lifer
Mar 11, 2000
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I'm talking about this 100BaseT splitter.

There is also a 10BaseT splitter, but it won't work with pure 100 Base T setups.

I want versatility. If the first works with everything I'll get it. If it doesn't, then I'll get the second one since most of the time I'll be on a 10/100 or 10 network anyway. Note that the 10BaseT splitter costs twice as much as the 100BaseT one for whatever reason, but at least it's in stock.
 

cavingjan

Golden Member
Nov 15, 1999
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Not sure but look through the threads from about 3 weeks ago. There was a discussion about them (specifically the 10bT model also from cyberguys.) I think I remember someone commenting that they were flaky but I didn't read the last post or so. Hopefully someone will notice this and correct me if I'm wrong.

Edit:
I found the thread and it was from before xmas started by you so I guess you will know about it. In case you couldn't find it. Is this the model that Radio Shack carries? If so, buy it from there and try it. If it doesn't work, return it. Or call and ask Cyberguys.
 

spidey07

No Lifer
Aug 4, 2000
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100 base and 10 base use the same pins on an RJ45 jack. I'm sure a 100 would work with a 10 hub.

<edit> ah, I see now. The 100 simply spits up 2 different sets of wire pairs (you need two of them) where the 10BT model looks to be some sort of minihub.
 

Eug

Lifer
Mar 11, 2000
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<< The 100 simply spits up 2 different sets of wire pairs (you need two of them) where the 10BT model looks to be some sort of minihub. >>

So does that make a difference? I'm thinking that since the wires are essentially the same (better quality for the 100) I would be fine just using the plain 100 Base T splitter.

All I want to be able to do is to split a jack in rooms with only one jack so that I can surf with my laptop, while the PC that's already there doesn't get unplugged. Most of the places I'll be using this will be DHCP, so that's not a problem for IP addresses.

Ie. Isn't a non-powered hub simply a splitter box? (May be a stoopid newbie question, but in fact I've only ever really used switches and routers at home and office.)
 

Workin'

Diamond Member
Jan 10, 2000
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I don't think you noticed that you need 2 of those 100BaseT splitters - 1 for each end of the run. So it really would cost a little more than the 10BaseT model. And be less convenient. But to answer the question, the 100BaseT model would work with 10BaseT also.

Also, now I'm no expert on this but it seems the 100BaseT devices force you to run half-duplex (since the 2 pairs are now used by different computers instead of the same computer) and it's not clear if the 10BaseT unit forces that as well. And it may not be a big deal anyway. But something to consider.

Did you call Cyberguys to check availability for the out of stock item? I ordered several items from them that were listed as out of stock (and still are listed that way) and received the items only 1-3 days later than the in-stock items.
 

spidey07

No Lifer
Aug 4, 2000
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to the full duplex question. 100BT uses two pairs same as 10BT, same pinout etc. Full duplex is a function of the network interfaces involved (NIC, switch, router) and has nothing to do with cable.