Date: Wed, 3 Jan 2001 22:57:57 -0800 From: "Crist J. Clark" <cjclark@reflexnet.net> To: "Brent B.Powers" <powers@b2pi.com> Cc: David Kelly <dkelly@hiwaay.net>, Tim Gustafson <tim@falconsoft.com>, freebsd-questions@FreeBSD.ORG Subject: Re: Two NICs In FreeBSD Message-ID: <20010103225757.F95729@rfx-64-6-211-149.users.reflexco> In-Reply-To: <14932.7305.161918.432919@Max.B2Pi.com>; from powers@b2pi.com on Thu, Jan 04, 2001 at 01:47:37AM -0500 References: <tim@falconsoft.com> <5.0.0.25.2.20010103233521.00a58890@esther.falconsoft.com> <200101040626.f046Qqp18465@grumpy.dyndns.org> <14932.7305.161918.432919@Max.B2Pi.com>
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On Thu, Jan 04, 2001 at 01:47:37AM -0500, Brent B.Powers wrote: > >>>>> "David" == David Kelly <dkelly@hiwaay.net> writes: > > David> Tim Gustafson writes: > >> Hello > >> > >> I just installed two NIC cards into my FreeBSD machine that are > >> on the same LAN, each with a different IP. However, I keep > >> getting this sort of message in my syslog: > > David> I fail to understand why one would put two NICs on the same > David> LAN. What does this do for you that an aliased address on > David> one NIC won't do? Is this something you have to do to NT to > David> fool it into appearing on the net with multiple IP > David> addresses? > > Someplace I've a sun doc that discusses how to do this on SunOS and > Solaris. The reason you might want to do it might include redundancy > (I've had NIC's die on me, sometimes from overheat) This is not the way to do it. The IP address of a fried card will still be unreachable. > and possibly increasing bandwidth. Two NICs on one net from one machine can only hurt your bandwidth in a collision domain. The _network_ is limited to 10Mb/s or 100Mb/s or whatever. More NICs cannot increase that. It can increases collisions and slow you down. > In fact, for the second reason, it's relatively > commonly done with PPP links, which amounts to two NIC's on the same > network. Huh, how's that? -- Crist J. Clark cjclark@alum.mit.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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