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12/4/2012 | 9:01:35 PM
re: Juniper Eats Into Cisco's Lunch
Whoever is first to market with true photonic switches and semiconductors will win the bandwidth race. WDM is great for increasing the stream to the door, but solutions in opto-electronics which replace copper-connections are needed to utilize the expanded throughput. Anyone here heard about Xanoptix?
Peter Heywood
Peter Heywood
12/4/2012 | 9:01:34 PM
re: Juniper Eats Into Cisco's Lunch
Bit of a misunderstanding here, I think:

- Bookham is making optical integrated circuits

- No-one is likely to make a genuine optical router in the foreseeable future. Routers have to store packets while they read the address in them and figure out what to do next. Right now, nobody knows how to store light for long enough to do this. This won't change unless there's a real breakthrough in fundamental physics - and if and when this ever happens, it'll take years to translate this into commercial products.

- Some vendors are using the term "router" loosely in product names of optical switches. EG Lucent's LambdaRouter and Cisco/Monterey's Wavelength Router. These switches don't read addresses in packets and they don't even route traffic on a packet by packet basis. They set up a wavelength in response to some external electronic signaling, in much the same way as telephone switches work.

- Quite a few startups have long term plans to make switches that will steer traffic onto different routes on a packet by packet basis, so they'll be getting closer to being real routers. All the same, they're not going to read addresses in packets like today's electronic routers do, for the reason I gave ealier (about storing light).

That's my understanding, anyhow. If I'm wrong, I hope someone will correct me.

Peter Heywood
Light Reading
12/4/2012 | 7:15:58 PM
re: Juniper Eats Into Cisco's Lunch
Currently it's fiber to digital, route it, then digitial back to optical.

Noone makes an optical optical router except Bookham in England.

JNPR and CSCO's days are numbered.

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