cat5e laptop-to-laptop?

[Rick Stevens]

Koos Rietveld wrote:
> The pins are 1,2 and 3,6 for data, not 3,5. Pin 4 and 5 are used for
> telephones.

Right.  I mistyped.  Sorry.

The concept still applies.

> 
> -----Original Message-----
> From: Rick Stevens [mailto:rstevens at vitalstream.com] 
> Sent: Wednesday, January 19, 2005 8:00 PM
> To: For users of Fedora Core releases
> Subject: Re: cat5e laptop-to-laptop?
> 
> 
> blank wrote:
> 
>>Trevor Smith wrote:
>>
>>
>>>Can I take two computers (laptops both) and plug them together 
>>>directly from one nic to another with a "standard" ethernet cable? Or 
>>>do I need a crossover cable or something to do that? And if I have the 
>>>correct cable, will the two machines do some sort of peer-to-peer 
>>>networking more or less automagically or will it be difficult to set 
>>>up? One runs FC2, the other Mac OS X 10.3.7.
> 
> 
> You need a crossover cable if you're going computer-to-computer.
> Computer ports are "MDI" (transmit data on pins 1 and 2, receive on pins 
> 3 and 5...think "DCE" for serial ports), a switch's ports are "MDIX"
> (transmit on pins 3 and 5, receive on pins 1 and 2...think "DTE" for
> serial ports).  If you use a straight cable, you MUST connect MDI to
> MDIX in the same way that a straight serial cable will only work with
> DCE to DTE.  To go MDI-MDI (DCE-DCE), you need a crossover (null modem) 
> cable.
> 
> Confused yet?  :-p
> 
> 
>>i'm not sure how permanant a solution you are seeking, but even if this 
>>is only one-time, having a little 4 port switch/hub around the house is 
>>worth a fortune :) Plus room for friends when they visit.
> 
> 
> That's the best solution.  Good switches will sense what kind of cable
> you have and automatically switch.  And at $30 US or less, they're
> a great bargain.
> ----------------------------------------------------------------------
> - Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
> - VitalStream, Inc.                       http://www.vitalstream.com -
> -                                                                    -
> -    Working with Linux is like wrestling with a worthy opponent.    -
> -   Working with Windows is like picking on an annoyed child with a  -
> -                            loaded handgun.                         -
> ----------------------------------------------------------------------
> 
> 
> 
> 


-- 
----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-                       When in doubt, mumble.                       -
----------------------------------------------------------------------