From: Abramson, Stuart (SAbramson@Wabtec.com)
Date: Tue Aug 19 2003 - 09:45:55 EDT
Thanks to Rick Jones below:
You don't need a crossover cable on GigE copper for 1000 BT.
HOWEVER, you DO need a crossover cable if you are running 10/100 on the GigE
card on copper (why would you do that?). Also, if you are running GigE
fiber you need to reverse polarity on "back-to-back" connection cables.
Stuart
Stuart Abramson | Off: 412/825-1434 | Cell: 412/417-1567 | email:
sabramson@wabtec.com
-----Original Message-----
From: Rick Jones [mailto:rick.jones2@hp.com]
Sent: Monday, August 18, 2003 2:09 PM
To: Abramson, Stuart
Subject: Re: [HPADM] How do I direct-connect GigaBit LAN cards
server-to-server at hp-ux 11i ?
"Abramson, Stuart" wrote:
>
> hpux-admins:
>
> We are getting new servers (rp7410-s), a new GigaBit switch and new
GigaBit
> LAN cards to put in all of our current servers.
>
> But, the GigaBit switch isn't arriving yet.
>
> Can I "direct-connect" two of our servers together on a GigaBit connection
> (Copper)? I mean can I run a GigaBit cable from one GigaBit LAN card on
> server A to a GigaBit LAN card on Server B and talk between them at 1000
> BaseT speeds?
>
> Do I need a "cross-over cable"? We heard at HP World that the GigaBit
> card/software is so smart that it can test the connection and "adjust" for
> direct connect and you don't need a cross-over cable?
You do not need a cross-over cable with gigabit ethernet.
> This will be HP-UX 11i, with which we have no experience.
> Stuart
the behaviour should be just like it would have been on 11.
--
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these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to raj in cup.hp.com but NOT BOTH...
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