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Absurdity of Stressing Metro 100G Now

January, 2015

A couple of financial analysts have been touting Ciena as the expected big winner for a future contract for a large 100G metro project at Verizon. While there can be little doubt that the vendor would be part of such a deal, it needs to always be remembered that these announced agreements never compel the service provider to buy one dime from any supplier, and so the actual amount of equipment purchased could be far less than initially indicated. Moreover, the conspicuous absence in the current discussion of Fujitsu, a vitally important metro incumbent vendor to Verizon, strongly points to the service provider buying less than a stellar amount of this gear anytime soon. Above all, current expectations for growth in the total 100G market are nothing to write home about – one market research firm, usually among the bullish crowd in general, is only projecting about a 25%...

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ROADMs Instead of Metro 100G Systems?

March, 2015

At the OFC 2015 conference, one of the most highly respected network engineers in the business from Xtera Communications will be legitimately asking the question on a panel, “What on Earth is a ‘100G Metro System?’” Bill Szeto will be asserting that because 100G currently means a whole wavelength, there is nothing wrong serving the needs with just taking a 100-gig channel off of a ROADM (Reconfigurable Optical Add/Drop Multiplexer). In doing so, it would also take care of the potential problems with stranded capacity that would occur in mesh networks as we outlined in a previous blog article. Bill will also argue that a so-called 100G metro system would provide no...

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Optical Line Interoperability Illusion

October, 2015

Although Microsoft and others have been discussing the notion of an Open Line System (OLS) to provide standardization with long-haul and metro equipment, there is little precedent for such grand notions ever coming close to being real with any technologies in the past. Naturally, large service providers are always inclined to ask for everything under the sun, including compatibility between vendors to potentially reduce their operational costs. (In responding to an RFI or RFP from the three largest incumbent carriers in the US, if a supplier does not at least say it has a plan to accommodate absolutely every request, it will immediately be eliminated from consideration.). However, despite countless successful interoperability tests that have been performed over the years, optical vendors, especially the biggest ones, at the end of the day, usually have absolutely no desire to enable...

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