switch speed question

[tom at snnap.net (Tom Storey)]

> Not every bit in results in just one bit out.  Broadcast, multicast,
> flooding for unknown MACs (or switching failures), ...

They were talking about a simple scenario where a bit that enters a port
will leave a port. With 24 gigabit ports, for all intents and purposes,
you will only ever have 24 gigabits at the most traversing the backplane.