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RE: Question on Jumbo Frame support on 10 GbE




Tricci:

You're correct regarding jumbo frame support for 1 GbE - it is not standard
but many vendors offer it.  I believe most vendors who added that feature
did so simply because their customers demanded it, arguably due to dealing
with I/O challenged host machines.  If you search the reflector archives for
jumbo frames, I think you'll find a great deal of stimulating discussion on
the matter.  If you would like to discuss this further, I'd be happy to do
so off-line (no need to keep this on the reflector).

Regards,

Mike

-----Original Message-----
From: Tricci So [mailto:tso@xxxxxxxxxxxxxxxxxxx]
Sent: Friday, May 18, 2001 3:23 PM
To: 'Mike Bennett'; stds-802-3-hssg@xxxxxxxx
Subject: RE: Question on Jumbo Frame support on 10 GbE

Hi Mike,

Many thanks for the insight.  Is that meant the support of Jumbo frame also
not a standard for 1GbE?  However, I find many 1GbE products advertised
Jumbo frame support upto 9K.  Is that meant this is only a value added
feature?

More insight on this would be very grateful.  Many thanks....
Tricci

-----Original Message-----
From: Mike Bennett [mailto:mjbennett@xxxxxxx]
Sent: Friday, May 18, 2001 3:07 PM
To: Tricci So; stds-802-3-hssg@xxxxxxxx
Subject: RE: Question on Jumbo Frame support on 10 GbE


Tricci:

Jumbo frames (with the exception of 1522 bytes for vlan tags) are not
specified in any 802.3 standard.  There would have been a serious problem
with backward compatibility with other than 10 GbE equipment if we had
included support in 802.3ae.  Since jumbo frames would have to have been
standardized throughout 802.3 it was declared outside the scope of 802.3ae.

Regards,

Mike



Mike Bennett
Lawrence Berkeley National Lab




-----Original Message-----
From: owner-stds-802-3-hssg@xxxxxxxxxxxxxxxxxx
[mailto:owner-stds-802-3-hssg@xxxxxxxxxxxxxxxxxx]On Behalf Of Tricci So
Sent: Friday, May 18, 2001 11:40 AM
To: stds-802-3-hssg@xxxxxxxx
Subject: Question on Jumbo Frame support on 10 GbE


Hi all,

If my understanding is correct, the support of Jumbo Frame is not currently
within the scope of 10GbE.  May I ask what is the rationale behind this
intent?

Many thanks in advance for your help....
Tricci