On 2019/04/10 12:43, Reyk Floeter wrote: > I have an em(4) with SFP in my FTTH gateway, a Lanner LEB-6032. I'd > be happy to test any em(4) diff for it. > > I had to get a special SFP that is compatible with the FTTH specs here > in Zurich. It is using an asymmetric wavelength, Tx1310nm and > Rx1460-1580nm, and I am wondering if your code could show this fact > somehow.
There is really nothing in the spec for bidi optiocs. If you can plug it into a supported nic (ix/ixl for now) you should see the Tx wavelength but there's nowhere to retrieve the Rx wavelength. Nice to have an FTTH setup that just lets you use your own kit! The few UK providers doing ethernet FTTH are mostly using Genexis boxes I think (probably for laser safety reasons, their fibre management makes it hard to look straight into a disconnected fibre).
