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Message-ID: <19981008131355.E29254@pavilion.net>
Date: Thu, 8 Oct 1998 13:13:55 +0100
From: Josef Karthauser <joe@pavilion.net>
To: Bill Fumerola <billf@chc-chimes.com>,
        "Jeffrey J. Mountin" <jeff-ml@mountin.net>
Cc: Manar Hussain <manar@ivision.co.uk>, freebsd-isp@FreeBSD.ORG
Subject: Re: IP Load balancing
Mail-Followup-To: Bill Fumerola <billf@chc-chimes.com>,
	"Jeffrey J. Mountin" <jeff-ml@mountin.net>,
	Manar Hussain <manar@ivision.co.uk>, freebsd-isp@FreeBSD.ORG
References: <3.0.3.32.19981006220817.00f7f3d4@207.227.119.2> <Pine.HPP.3.96.981007102658.563A-100000@hp9000.chc-chimes.com>
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In-Reply-To: <Pine.HPP.3.96.981007102658.563A-100000@hp9000.chc-chimes.com>; from Bill Fumerola on Wed, Oct 07, 1998 at 10:28:17AM -0400
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On Wed, Oct 07, 1998 at 10:28:17AM -0400, Bill Fumerola wrote:
> On Tue, 6 Oct 1998, Jeffrey J. Mountin wrote:
> 
> > Just what is meant by layer4 vs layer 3 or layer 2 switching, the last being 
> > most common.  Not sure if they count up or down (up? from hardware
> > level).
> 
> >From the bottom up.
> 
> Layer 2 - Switching by MAC
> Layer 3 - Switching by IP (router, sorta)
> Layer 4 - Switching by TCP/UDP port, which makes no sense to me.

It's useful for managing bandwidth by application type.
-- 
Josef Karthauser
Technical Manager	FreeBSD: The power to serve (http://www.uk.freebsd.org)
Pavilion Internet plc.  [joe@pavilion.net, joe@uk.freebsd.org, joe@tao.org.uk]

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