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The Guts of the CFP2

August, 2014

For the next generation of 100G coherent line interface form factor CFP2, will it be a split implementation -- analog CFP2 and separate digital DSP ASIC for the card? Can both parts be integrated into the single package? As far as we know, it will be split. While today, there is one 100G on a card, etc., with CFP2, there will be at least two on a board. There is no question that it would be desirable to use the same DSP for both. However, the industry has gone back to the 1990s in which 100G customers, such as Alcatel-Lucent, Cisco Systems, etc., each have their own DSP, and they believe that to be their secret sauce -- and that is why the DSP is coming out of separate packages. (written by: Alka Swanson)

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25G Laser Shortage

August, 2014

We have been told that there is going to be a worldwide shortage of 25G lasers in the coming two years, supposedly due to not enough capacity having been planned by the industry as a whole.  We hadn’t heard anything like this before.  Do you guys know if this is true, and if so, why it happened? A couple of our contacts indicate that supply is down because of unexpected demand by a few data center operators as well as a greater need for customized optics, and that 25G lasers have inherently lower manufacturing yields than is the case, say with 10G devices. Specifically, the 25G DMLs are in short supply, not the EML devices. However, the EMLs are very expensive, especially for short-distance applications. There is also apprehension that expanding production will create a long-term overcapacity situation, once the market gets back to normal levels. In the meantime, it has become a...

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Big Need for MPLS-TP?

August, 2014

At the service providers across the globe, the most widespread and native selection is MPLS and not MPLS-TP. The former has broader acceptance, superior interoperability, and operational intimacy for the engineering folks. In Asia, particularly China, MPLS-TP has taken off in a big way. While some industry observers view that part of the world as exceptionally unpredictable and may suggest that “TP” could even be replaced, it seems that at least one of the large Chinese operators has such a critical mass of deployment that such a move is not imaginable. On its face, one would think customers should want to go with MPLS-TP over MPLS because the former is a newer version. Ordinarily, any supplier that would happen to start product development from scratch would definitely be inclined to begin in the “TP” direction. Theoretically, MPLS-TP should be a slam-dunk in a greenfield...

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Impact of Cisco Systems’ Purchase of Tail-f?

August, 2014

What happens to Tail-f and to all of its customers after the acquisition by Cisco? Do those customers have to find a new partner? Will Cisco keep it open to all vendors and competitors? Does Cisco imbed it and no longer allow access to third parties? Each customer probably had an agreement with Tail-f in case of an acquisition. It may be on a case-by-case basis, but in terms a macro answer, these days, there are not purchases without putting in a clause for M&A. For small suppliers, it can be quite detrimental. For example, regarding a component company that was purchased in 2013, large module and system suppliers, such as Finisar, Juniper, etc., put in a stipulation that if the vendor was acquired, and did not supply the devices at ridiculously low prices, then they can take hold of the IP, and produce them somewhere else. It is a Catch 22 situation. If one refuses to sign such a...

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