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Date:      Sat, 15 Sep 2007 07:31:08 -1000
From:      Randy Bush <randy@psg.com>
To:        Julian Elischer <julian@elischer.org>
Cc:        FreeBSD Net <freebsd-net@freebsd.org>
Subject:   Re: BCE on FreeBSD and oversized packet acceptance.
Message-ID:  <46EC16DC.2010104@psg.com>
In-Reply-To: <46EC1575.4070401@elischer.org>
References:  <46EAE78D.8060108@elischer.org> <46EC0E75.5070307@psg.com> <46EC1575.4070401@elischer.org>

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>>> what size is the actual maximal sized jumbo packet we will ever see?
>> some transpac science community folk, who care more about speed trials
>> with big data sets than they do about over-stretching the ethernet crc,
>> use 9k jumbo frames.
> well that's the standard but the highest I've seen mentioned as a normal
> size is I think 9220 bytes.

i suggest being careful with the word "standard."  ieee, which controls
the ethernet spec, has refused to standardize anything above 1500 on the
grounds that it would over-stretch the crc.

randy



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