re: "The ultimate emancipation is the all optical network, which is agnostic to protocol, bitrate, content, and control plane."
I trust you don't believe "ultimate emancipation" is a term in the RBOC or cable MSO vocabulary. The attributes of said nirvana (bitrate, protocol, content, control plane agnostic)also rub their core operational beliefs the wrong way. So this must mean you are an advocate of municipal networks and other non-legacy access network beach heads? It doesn't matter what the rest of the network does if the access network retains its present DNA. That is the emancipation of most concern.
re:"The all optical network is intrinsically circuit switched from the edge. It uses the [wavelength] both to define the route and to bear the message. ..up to some 10K lambdas on a fiber."
Your words imply dedicated, reserved, end-to-end wavelengths. There are a heck of a lot more than 10,000 simultaneous sessions in medium to large aggregation points in the network, growing as you approach the core. A thousand fibers carrying the same 10,000 wavelengths fundamentally does not scale by this approach. Each wavelength is a circuit by your definition, and no matter how many 10,000-lambda fibers you have, there are only 10,000 unique circuits across them all.
There has to be a switching granularity finer than a circuit. It has to be able to dynamically switch wavelengths in-flight, to get around the wavelength contention problem during the route, while still maintaining both the source and destination wavelength information in a header somewhere, since those are final route identifiers by your definition. |
