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Re: [HSSG] Topics for Consideration: Jumbo Frames

Actually, the 802.3 MAC is not speed agnostic. We cracked that seal when we
specified that 10G is only full duplex.

-----Original Message-----
From: Menachem Abraham [mailto:mabraham@xxxxxxxxxxxxxxxxxxxx] 
Sent: Tuesday, August 08, 2006 7:00 PM
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: Re: [HSSG] Topics for Consideration: Jumbo Frames

Since 802.3 has a speed agnostic MAC specification, wouldn't we want to keep
it that way and therefore not make jumbo frames an HSSG specific work item?
Menachem Sent from my Blackberry 

-----Original Message-----
From: Michael Johas Teener <Mikejt@xxxxxxxxxxxx>
Date:         Wed, 9 Aug 2006 12:35:56 
Subject: Re: [HSSG] Topics for Consideration: Jumbo Frames

Jumbo frames are great as long as you stay in the HS environment. A jumbo
frame hitting a 100baseT (or, heaven help us, a 10baseT) link will mess with
any QoS assumptions. Nasty things will happen bridging to non-Ethernet 802
LANs as well. I think this question needs to be addressed at a combo
802.1/802.3 level since it is a real architecture issue ...

On 8/9/06 12:09 PM, "Joel Goergen" <joel@xxxxxxxxxxxxxxxxxxx> wrote:

> Mike,
> My preference is to associate this with MAC objectives.  In past 
> meetings where this has been addressed, the atmosphere was 'tense'. 
> Thus best to get the debate over with asap and move on.
> I don't know at this point how to address your question.  I suspect 
> that since 'all' of us support jumbos and we are inter-operable, that 
> there is a compelling argument to spec it but not change it.
> Both my position and that of the customers I deal with is that higher 
> speeds, 10gbps included, is more efficient with the larger packets.
> -joel
> Mike Bennett wrote:
>>  Joel,
>> Wouldn't jumbos be something better addressed separately?  How do we 
>> deal with backwards compatibility?
>> Mike
>> Joel Goergen wrote:
>>>    All,
>>> If I go to any search engine and input "jumbo ethernet frames 
>>> chips", I will see that every system and silicon vendor supports 
>>> jumbo ethernet frames