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rick merritt
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Tech insights?
rick merritt   11/6/2013 10:37:38 AM
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Anyone have any insights into what's inside the new ASICs, 40G optical modules, couplers or other silicon in the switches?

krisi
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Re: Tech insights?
krisi   11/6/2013 10:42:32 AM
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Rick, there is probably not much inside the ASICs...the whole concept of software defined networks is that switch can be very simple like a cross-bar, has tons of very high speed IOs and all packet processing functions are done in very faast processor outside the switch core...we are moving back to cheap but dumb switches...Kris

rick merritt
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Re: Tech insights?
rick merritt   11/6/2013 10:56:38 AM
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@Kris: Understood, but Cisco ASICs are traditionally pretty big honking die. I hope to get an interview with an Insieme tech exec at some point to talk about the designs.

chanj0
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Proprietary vs Openness
chanj0   11/6/2013 11:42:30 AM
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SDN starts from openness. The primary goal is to ease management and potentially improve network utilization. To me, a consortium shall be formed and a set of standards shall be agreed among different vendors to ensure active routing/switching reconfiguration can be in a larger scale. I can understand the benefit of proprietary solution to a company. I believe the power of standard and agreement to a bigger scale.

katieanne
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SDN Drive
katieanne   11/6/2013 11:45:55 AM
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I know people have lots of opinions and that is good. I guess when this SDN Drive can be a good tool in the future then it will be worth the investment. - Aldo Disorbo

krisi
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Re: Tech insights?
krisi   11/6/2013 12:36:19 PM
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It might be still big honking die Rick!

I have not designed a networking ASIC for at least 10 years but still remember few things on the topic ;-).You probably need 1 Tb/s aggregate bandwidth (or more) so with 10 Gb/s per pin (differential) that requires 400 pins. Plus ground, power, control etc. Can be 1000+ IO pins at the end. Plus billion little muxes inside the core. Requires careful engineering, probably cost few million $ to tape-out but no smart packet processing as it is done today (famers, packet processors, etc) which will be done elsewhere.

The bottom line is that it's still a matter of N-to-N connections and no software can solve that problem. BTW, in today's complex routers there is lots of software already so the software component is not new, it is just executed somewhere else so networking can be controlled by the box operator not by the box manufacturer.

At the end all the software can do to help get packets where they need to go is simplify the core switching problem to something like a cross-bar, you can't go simpler than that! BTW, all switching concept are very elegantly explained by Carl McCrosky is our Wiley book "Network Infrastructure and Architecture: Designing High-Availability Networks".

Looking forward to your interview with Insieme folks! Kris

daleste
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Re: Tech insights?
daleste   11/6/2013 8:49:30 PM
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That's a lot of pins.  It may be more cost effective to be a chip set so that the total die area is less.  Of course that adds communication issues between chips.

rick merritt
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Re: Tech insights?
rick merritt   11/6/2013 11:05:20 PM
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@Kris: Yeah, pins are a limiter in these designs!

asic_pal
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Re: Looking forward to your interview with Insieme folks!
asic_pal   11/7/2013 1:45:51 PM
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Typically it takes at least 3 years for any HW/SW startup to bring the Idea to Production worthiness.

It would be interesting know what insieme develepped in a year, that's values $1B.

rick merritt
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Re: Looking forward to your interview with Insieme folks!
rick merritt   11/7/2013 5:39:11 PM
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@ASIC_Pal: I suspect Insieme has been around more than a year, but don't know how long. Does anyone else?

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