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Date:      Fri, 3 Jan 2003 02:22:34 +0200 (WET)
From:      Evren Yurtesen <eyurtese@turkuamk.fi>
To:        Michael Sierchio <kudzu@tenebras.com>
Cc:        dmagda@ee.ryerson.ca, freebsd-stable@FreeBSD.ORG, wpaul@ctr.columbia.edu
Subject:   Re: wi0 and mtu setting
Message-ID:  <Pine.A41.4.10.10301030220070.16002-100000@bessel.tekniikka.turkuamk.fi>
In-Reply-To: <3E14AE7F.50805@tenebras.com>

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I definetely agree and obviously since mikrotikos supports this then linux
should do since mikrotikos is built on linux. Why shouldnt FreeBSD support
setting mtu of wireless interfaces higher than 1500

On Thu, 2 Jan 2003, Michael Sierchio wrote:

> David Magda wrote:
> > Evren Yurtesen <eyurtese@turkuamk.fi> writes:
> > 
> > 
> >>I wonder how come wi driver doesnt let me to set mtu higher than 1500
> >>even though I know the card supports it?
> > 
> > 
> > Because the maximum size of the data poriton in a frame for 10Mbit
> > and 100Mbit Ethernet is 1500.
> 
> That makes no sense to me.  802.11 is not ethernet.
> 
> And since it's mandatory to use IPSec, SKIP or some other encapsulating
> security protocol for wireless (THANKS! IEEE!), these all reduce the
> advertised MTU size to upper layers to avoid frags.  It would be nice
> if this reduced mtu size were 1500.
> 
> 


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