[j-nsp] QFX3500 optics lock?

Chuck Anderson cra at WPI.EDU
Fri Jan 6 21:34:35 EST 2012


Like I said, that is nuts.  I will NEVER buy the QFX then as long as
this "vendor arrogance" exists.  And don't give me this "but we
haven't tested it with every possible SFP+ vendor so we can't allow
you to use any vendor" crap.

What if you have an HP or Dell server, or EMC storage, or whatever,
and that vendor says, "You must use HP/Dell/EMC/Intel/whatever DAC
cables.  Non-HP/Dell/EMC/Intel/whatever DAC cables will not link up."
Now you are stuck.  Proprietary vendor A won't talk to proprietary
vendor B.  This defeats the purpose of having standards/MSAs (SFP,
Ethernet, TCP/IP, etc.) in the first place.

To clarify my original question, does anyone know of any such
server/storage/NIC/HBA vendors out there that insist you use their DAC
cables?  I want to be sure not to buy those either, because last I
checked, you can't put SFP+ DAC Vendor A on one end and SFP+ DAC
Vendor B on the other end of the same DAC cable assembly.

On Fri, Jan 06, 2012 at 04:57:29PM -0800, Jim Glen wrote:
> Hi Chuck,
> I have both QFX-3500's as well as a complete Q0Fabric system, I can absolutely confirm that at this time everything that connects to a QFX node has to be Juniper, this is true from 1gb (copper and fiber), as well as 10gb, Active and Passive DAC cables.
> 
> If you plug in non-Juniper SFP's the QFX recognises that they are there and you can read the Digital information from them, however, the SFP will never be recognised and be available for use by the switch.
> 
> Hope this helps,
> Jim Glen
> Chief Engineer
> CODONiS, Inc.
> 12201 Tukwila International Blvd.
> Seattle, WA   98168
> 
> 
> 
> 
> On Jan 6, 201216, at 2:59 PM, Chuck Anderson wrote:
> 
> > On Fri, Jan 06, 2012 at 01:26:19PM -0500, Jeff Wheeler wrote:
> >> We just received our first QFX3500s, and contrary to what the Juniper
> >> SE told us, they will not work with non-Juniper optics.  Is there some
> >> clever, undocumented means of using third-party optics in these
> >> switches?  JTAC says it will "never" be compatible with non-Juniper
> >> SFP+.  Right now it looks like we will be sending them all back and
> >> going with another vendor.  Glad I wasted my time doing Q&A with the
> >> sales engineer.. :/
> > 
> > That's nuts.  What if you have a different vendor at the other end of
> > a Direct Attach Copper SFP+ cable assembly that does the same thing?


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