Thanks all for your useful answers. I can see clearer now on the possibilities 
we have here.

Actually the exact goal of my request was to split one QSFP+ into 4 monomode 
SFP+ & connect 2 different remote equipments on the other end.
This is a weird application, coming from a request of a customer using HP 5900 
with 48*10G Base T + 4QSFP+ only & willing to connect  a remote site with SFP+ 
equipments only. In this case indeed a CVR-QSFP-SFP10G QSFP to SFP+ converter 
may be enough, but I am note sure I can use it with an HPN equipment...

Thank you again for your great help !

Best regards
Gilles.


> Message du 18/06/14 à 21h02
> De : "Andrew Miehs" 
> A : "Peter Persson" 
> Copie à : "[email protected]" 
> Objet : Re: [c-nsp] 40G QSFP to 4*10G SFP+ Breakout Optical Cable
> 
> As I said, you should be able to use the cisco qspf-40g-sr4 and an mpo-12 to 
> lc breakout cable which you can then connect to sfp-10g-sr s. For single mode 
> you would need an alternative supplier for the qsfp who do something similar 
> for lr - like the plr4 from arista - but no idea if it works on a cisco, Sent 
> from a mobile device > On 19 Jun 2014, at 3:17, Peter Persson wrote: > > What 
> i think Gilles is looking for, is a way to buy active wavelengths on > 
> 10gigabit instead of 40gigabit? > > I dont use QSFPs in my net, so i dont 
> know the answer, but i think thats > the question from the begging? > > 
> Regards, > Peter > > > 2014-06-18 18:27 GMT+02:00 David Paul Zimmerman > : > 
> >> This may be a weird tangent to your question, but if you're running on a 
> >> Nexus 6004 (maybe other platforms too, but definitely the 6004) and don't 
> >> mind wasting a whole 40GE QSFP port to service a 10GE drop (say you're way 
> >> overprovisioned on 40GE capacity and can do that), you should check out >> 
> Cisco's CVR-QSFP-SFP10G QSFP to SFP+ converter. >> >> dp >> >> -----Original 
> Message----- >> From: cisco-nsp [mailto:[email protected]] On 
> Behalf Of >> Gilles Fabre >> Sent: Wednesday, June 18, 2014 4:38 AM >> To: 
> [email protected] >> Subject: [c-nsp] 40G QSFP to 4*10G SFP+ Breakout 
> Optical Cable >> >> Hi all >> >> I have been searching for 40G to 4*10G 
> cables (not DAC/Twinax but optical >> ones). >> Did you ever use such cables 
> ? is it reliable ? >> I did not find any monomode ones, I guess this is not 
> existing... any >> idea why (strength of signal ?) ? >> >> Thanks & best 
> regards >> Gilles >> >> >> 
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