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Date:      Fri, 17 Feb 2006 15:24:11 +0000
From:      Miguel Ramos <miguel@anjos.strangled.net>
To:        Thomas Franck <TAFranck@gmx.net>, freebsd-stable@freebsd.org
Subject:   Re: 2 NICs, SMP, weird kernel ARP messages
Message-ID:  <1140189851.907.11.camel@dual.anjos.strangled.net>
In-Reply-To: <43F5EF0A.31646.16880A2@TAFranck.gmx.net>
References:  <43F5E134.2791.13277DF@TAFranck.gmx.net> <43F5EF0A.31646.16880A2@TAFranck.gmx.net>

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Sex, 2006-02-17 ās 15:43 +0100, Thomas Franck escreveu:
> > Unless you take special measures (ng_fec?), one does not
> > normally connect two NICs on one machine to the same collision
> > domain. 
> 
> Hmm.. don't really see a problem with that.. two NICs with 
> diffent IP on the same subnet.. binding say, a webserver and a 
> database to different NICs... takes load off the single NIC, 
> giving 100MBit to each service...
> 

If they're on the same collision domain, then you're not giving 100Mbps
to each service, that would be good. That's why it usually doesn't make
sense (I understand that this is a temporary configuration...).

You can have two IP addresses on the same NIC anyway...

> > By default, some other hardware (like Suns), will even use the
> > same MAC address for every NIC on the machine.... 
> 
> Uhh.. that's nasty.. :)
> 

Not so nasty, since there's really no point in having more than one NIC
on the same segment. And the log message is justifiable.

Sorry for my intrusion.

Miguel





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