[rescue] The Practical Guide to FDDI

[Joshua Snyder]

On Thu, 27 Mar 2003, Phil Brutsche wrote:
> Jumbo frames are specific to Gigabit ethernet, and it's also the only
> way to get anywhere near 100MB/sec (GigE runs at 350MHz; using the
> "normal" 1500 byte MTU you're limited to 20MB/sec).  It's part of the
> GigE specification.

This didn't sound correct to me, I have seen systems pushing 700Mbit
bi-directionally without using jumbo frames.  So I did a google for the
gigabit white paper, http://www.10gea.org/GEA1000BASET1197_rev-wp.pdf  I
don't see anything talking about speed limits when using normal frame
sizes.  After looking at the white paper I don't even see a reason why it
would be limited (baring hardware limitations).  Not that you wouldn't
want to run with jumbo frames if you could, but most of the time your
stuck using normal frames.  Are you sure about that limit?

				josh

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