Splitting a Cat 5 Cable

[BIGALINWALES]

Hey,

I have a room which has two wall sockets(1 voice, 1 data) I need to add a networked printer and need a temporary fix to do so. I have read that you can add two connectors through one cat 5 cable and was wondering if anyone knew how to do so. I'm aware that you shouldn't and it wouldn't meet the cat5 standards but as this is just a temporary section I'm not that bothered.

Many Thanks

Alex

 

[jeffbouldin]

On one use orange pin 1, orange/white pin 2, green pin3, green white pin 6.

On the other blue pin 1, blue/white pin 2, brown pin 3, brown/white pin 6.

 

[BIGALINWALES]

Many thanks Jeff.

Did it in the end slightly differently but the help is much appreciated.

Thanks Again

Alex

 

[Jtodd]

Oh, I hate this question! I know that comes up often, especially with 'temporary fixes' and difficult runs. But this is SO bad! They are never temporary, and do enough of them and they WILL slow down your network. I have removed over 100 splits on my campus network (installed by previous employees) and network preformance has been noticably better.
But if you are going to do it, at least use the Hubbell Splitter

http://www.hubbellcatalog.com/hubbellpremise/datasheet.asp?PN=BR851241A&FAM=JacksSnapFitModules

Better yet, use a mini-switch.

Justin T. Clausen
Physical Layer Implementation
California State University, Monterey Bay

 

[SavoyBlue]

have an extra NIC card? install a secondary one and create your own bridge with no bandwidth loss. Hook the device up to it, and configure it either for local access or to be enabled to a specific route or segment on the LAN.

~Savoy Blue~

 

[SavoyBlue]

Ohh, and just to say (splitting is the most stupidest thing ever)... at the physical layer, 0's and 1's are being transmitted in frames. Even though these frames are like blocks, splitting the line can cause a block inside of a block (if that makes any sense), and therefore you wont get a collision, you'll get a corrupted packet by the time it reaches the machine (if its a long run)... (and using ethernet CSMA/CD) There is a little secret to this though that I cant say.. only hint with my last message of 2 NIC's. Only the Listen/Wait/Recieve/Send wires are used with ethernet... there is a way to dedicate the other 2 wires for flow control and ERROR CONTROL if your going to make a split... Hint 3) A computer can be used as a 'hop' static destination [since it has an IP] to get to where you want to, if you keep the data flowing away from the broadcast traffic; you should be fine.

 

[Jtodd]

Huh?

I think you're saying that the protocol (ethernet) doesn't care if the pairs are split, and that things can be done to compensate for the problem. Ok. I'll have to take your word for it.
But that doesn't change the fact the spliting an 4 pair UTP cable off and plugging in two devices (2 pair each, for example) changes the electrical properties of the cable in such a way that it will cause electrical signal degridation which effects the bit error rate.
I think what you're describing is why I would rather see a mini-switch installed at a location instead of a splitter.

Justin T. Clausen
Physical Layer Implementation
California State University, Monterey Bay

 

[SavoyBlue]

of course, I would rather see a mini-switch, switch, or anything else used to 'dedicate' the bandwidth instead of sharing it. ... just offering a rig that I had used before to dedicate the bandwidth from one machine to another without an intermediatte unit.... but your absolutely right when it comes to the scale of a network. I mean, rigs like that become easy and still allow propagation with a small network, but with a larger network ... its a slow and sure way to be up the creek without a paddle. I was just saying 'to bridge' it and use the full duplex capabilities of 2 machines and let the router know that both machines are the same entity. The flow control on the 2 NIC's would keep the other in check/Jam Signaled and the other in a 'listening' state ...

~Savoy Blue~
CCIE

 

[SavoyBlue]

sorry for the double post... the idiot running my proxy server has my MTU at like 2000 or something .... data-overflow of rWin buffers...

Sorry Again...