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diaconal
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Joined: 03 Oct 2004
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PostPosted: Sun Mar 06, 2005 9:37 pm    Post subject: To crossover or not... Reply with quote

Hi,

I have a few questions. I have a dell laptop with Broadcom NetXtreme CCM5702X Gigabit Ethernet internal card, and it seems that in windows, I can somestimes connect to other ppl's comp/laptop using an ordinary ethernet (not crossover or twisted pair), where I can see them and transfer stuff but they can't connect to my laptop. I always thought this was a feature in gigabit cards, where they sorta internally make the connection 'twisted'. Recently, I formatted my desktop and put in Gentoo, which is connected to a the home network with a dhcp server. Now, I only have one cable comming into my room so what I had done in Windows was, using two ethernet cards, bridged them, and connect my laptop on the network too. Again, I can access my network fine but no one could see my laptop on the network, which I don't mind. Ok, so now I'm in Gentoo on desltop and I tried the same thing, and I think the bridging works fine but I can't connect to my desktop from the laptop (bridged or not, and laptop has windows and gentoo).

I was wondering if there is a special command (eg. in ifconfig) where I can tell my laptop to connect direclty to my desktop (using a regular ethernet cable that I've always used.

Thanks...
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midknight_gentoo
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Joined: 13 Jul 2003
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PostPosted: Sun Mar 06, 2005 10:34 pm    Post subject: Reply with quote

i think recent versions of windows will auto detect the connection and cable and make the change.. just like many new switches do.
but linux won't do it.. pc - pc youll need a crossover.. or a switch/hub between them...
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j-m
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Joined: 31 Oct 2004
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PostPosted: Sun Mar 06, 2005 10:40 pm    Post subject: Reply with quote

Non-crossover cable works only for Gbit<-->Gbit NIC connections or with MDI/MDI-X autodetection switches.
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diaconal
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PostPosted: Mon Mar 07, 2005 5:59 am    Post subject: Reply with quote

ah, so I'll have to find a twisted pair now... another thing, is there an easy way to figure out if a cable is twisted, and once I do use it, do I have to do anything special with ifconfig or it should just work?
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j-m
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Joined: 31 Oct 2004
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PostPosted: Mon Mar 07, 2005 11:14 am    Post subject: Reply with quote

diaconal wrote:
ah, so I'll have to find a twisted pair now... another thing, is there an easy way to figure out if a cable is twisted, and once I do use it, do I have to do anything special with ifconfig or it should just work?


Huh? All of them are twisted... :lol:

If you mean how to figure out which one is crossover, then have a look at both ends side-by-side. If the colors do not match, it is a crossover one.
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