Hi, yep, that's the right way to work cleanly, just add a «special patch panel» instead of dealing with plenty of additional wires.
We use such method to do 10GE with routers modules full of QSFP+ configured as 4x10. On our side we went for a modular Huber+Suhner solution, 1 U with a maximum of 18 MTP (from 18 QSFP+) internally wired to 72 LC duplex. I searched a bit before choosing this, it looks like this was (still is ?) the denser solution. They are divided in modules of 3 MTP to 12 LC-duplex (wired accordingly to the QSFP+ / MTP8 pairing): https://ecatalog.hubersuhner.com/product/E-Catalog/Fiber-optics/Fiber-management-systems/Modules/ITD-12-LCUD-03-08CF-SM-NS-00WW <https://ecatalog.hubersuhner.com/product/E-Catalog/Fiber-optics/Fiber-management-systems/Modules/ITD-12-LCUD-03-08CF-SM-NS-00WW> They go inside some various chassis, we use their 1U one than can host 6 of such modules: https://ecatalog.hubersuhner.com/product/E-Catalog/Fiber-optics/Fiber-management-systems/Chassis/IANOS-STD-CHASSIS-FLX-1U-2G-T4 <https://ecatalog.hubersuhner.com/product/E-Catalog/Fiber-optics/Fiber-management-systems/Chassis/IANOS-STD-CHASSIS-FLX-1U-2G-T4> We use them since 2017: https://twitter.com/OBenghozi/status/885528976801837057 <https://twitter.com/OBenghozi/status/885528976801837057> regards, Olivier > Le 9 janv. 2020 à 17:29, Baldur Norddahl <baldur.nordd...@gmail.com> a écrit : > > Hello > > In my opinion the "nice" way of breaking out QSFP into 10G is something like > this: > > https://www.fs.com/de-en/products/43552.html > <https://www.fs.com/de-en/products/43552.html> > > 40GBASE-PLR4 to 10GBASE-LR Breakout Panel 1U Rack-Mount, 24x LC Quad, 12x MTP > Elite (0.35dB IL), Single Mode > > You connect your QSFP module using a MTP cable to the breakout panel. That > particular panel will accept up to 12x MTP connections (12 QSFP ports) which > equals 48x 10G LR 10 km single mode. > > If you don't need quite that many breakouts this solution is also available > in smaller cassettes: > > https://www.fs.com/de-en/products/68401.html > <https://www.fs.com/de-en/products/68401.html> > > MTP-8 to 4x LC Duplex, 8 Fibres OS2 Single Mode FHD MTP Cassette > > That will terminate one MTP cable (1 QSFP port). > > I prefer the panel solution over breakout cables because the later assumes > all the connections are going the same place. Also the panel solution will > appear as an extension of the switch or router. Mentally it is simply extra > ports on a separate panel. > > Regards, > > Baldur
