Re: Data rate standards vs internal switching standards
> Date: Wed, 04 Aug 1999 10:19:28 -0400 (EDT)
> From: Roy Bynum <RBYNUM/0004245935@xxxxxxxxxxx>
> Subject: Re: Data rate standards vs internal switching standards
> To: Ariel Hendel <Ariel.Hendel@xxxxxxxxxxx>, stds-802-3-hssg <stds-802-3-hssg@xxxxxxxx>
>
> Ariel,
>
> Actually, I am not in favor of a programmable IPG. I think that the IPG
> should be set to minimum for all frames in full duplex 10GbE. With 400
> bytes as the current average size of Internet 802.3 frames, I don't
> think that there will be enough "slop" to make up the difference
> between a 10.0 gb MAC and a 9.584 gb PHY. In the future, with more
> and more video based applications, the average size of the data frame
> will be increasing. This will only cause the MAC buffer discard rate
> to increase if the MAC and PHY are not data rate matched. I would much
> rather see the data rate be defined at the MAC, not the PHY.
>
My apologies for being dense on this thread, just one last hypothetical
question for Roy.
Would you accept a 10Gbps rate along with a variable IPG?
The IPG is just simple function of the length of the last packet sent
to guarantee that the payload rate does not exceed your OC-192 rate.
Open loop, interoperable, no pins, no thresholds, no nothing.
Would you settle for that or you still prefer the 9.xyz rate?
Thanks,
Ariel