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Date:      Fri, 14 May 1999 20:28:55 -0700
From:      John Milford <jwm@CSUA.Berkeley.EDU>
To:        Steve Rubin <ser@tch.org>
Cc:        David Scheidt <dscheidt@enteract.com>, hackers@FreeBSD.ORG
Subject:   Re: ifconfig: changing mac address
Message-ID:  <199905150328.UAA27064@soda.CSUA.Berkeley.EDU>
In-Reply-To: Message from Steve Rubin <ser@tch.org> of "Fri, 14 May 1999 20:24:49 PDT." <19990514202448.A9401@tch.org>

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	You have to have the capibility on the switch, and enable it
first.  It is called EtherChannel by Cisco, and it is 2 or 4 ports
that all have the same MAC addr plugged into the switch, and the
switch treats them as one interface.


			--John


Steve Rubin <ser@tch.org>  wrote:

> >
> > You need a switch to do this.  If your clients are on the same ethernet as
> > your server, they can only talk to one MAC address.  That means you only ge
t
> > the bandwidth of one interface.  If you have a switch that can bond ports
> > together, you can use both cards at the same time, transparently to everybo
dy
> > but the driver and the switch.  I know that NetWare supports this, as do so
me
> > Bay switch, and surely some Cisco stuff.
> >
>
> Having 2 ethernet cards with the same mac address on two different ports
> of all the cisco switches I have used (1100-6500) will confuse the hell
> out of them :).  I've seen it happen.
>
>
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