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Forty or 100?

By Phil Hochmuth
Network World Fusion, 09/10/02

That's a question Foundry Networks CEO Bobby Johnson threw out during his keynote address at NetWorld+Interop here on Tuesday, as he pondered what comes after 10 Gigabit Ethernet.

Johnson said he thinks the industry may look at 40 before 100 Gigabit Ethernet, as the former technology currently exists in the form of 40G bit/sec OC-768, while no technology is out there now that can do 100M bit/sec.

In the past, Johnson said, the development of high speed Ethernet involved "piggybacking" on top of technology from existing high-speed connectivity technologies: Gigabit Ethernet borrowed from Fibre Channel and 10 Gigabit Ethernet borrowed from OC-192.

So if past is prologue, we should see 40G bit Ethernet in the next two to five years, he added.



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