Date: Fri, 17 Feb 2006 16:43:25 +0100 From: "Thomas Franck" <TAFranck@gmx.net> To: Miguel Ramos <miguel@anjos.strangled.net> Cc: freebsd-stable@freebsd.org Subject: Re: 2 NICs, SMP, weird kernel ARP messages Message-ID: <20060217154307.C11C343D48@mx1.FreeBSD.org> In-Reply-To: <1140189851.907.11.camel@dual.anjos.strangled.net> References: <43F5EF0A.31646.16880A2@TAFranck.gmx.net>
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> Sex, 2006-02-17 =E0s 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...). they should both have (almost) 100MBit as they're connected with switches.. so the collision domains are broken up for each NIC.. right down to the VLAN'ed base-switch... > You can have two IP addresses on the same NIC anyway... yeah.. but it's only one 100MBit that the services have to share on that NIC.. :) it doesn't matter, though.. we don't have that much load anyway (and if we have a peak, it's not critical) - it was just an example why I don't see a problem.. :) - Thomas
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