I have used this SFP+ transceiver for both the X310 and N310, both with XG
images.  I do not remember if I tried the X310 with the HG image, but I
think so. I am using 10gbe with single mode fiber - approximately 100m.

Rob

On Wed, Jul 25, 2018 at 1:51 AM Zhongyuan Zhao <zhz...@cse.unl.edu> wrote:

> Hi Rob,
>
> Thanks, I just tested FS SFP-10GLR-31 on HG image (I connected to SFP1)
> but unfortunately it does not work. Maybe I should do some more test.
> That module actually work for my Dell switch.
> Which FPGA image did you use? Are you connecting fiber to SFP0 or SFP1 or
> both? Is that 10Gb Ethernet connection?
> Thanks.
>
> Zhongyuan Zhao
>
> PhD Candidate,
> Department of Computer Science & Engineering,
> University of Nebraska-Lincoln
> Suite 117, Schorr Center,
> Lincoln, Nebraska 68588-0115
>
> On Mon, Jul 23, 2018 at 12:45 PM, Rob Kossler <rkoss...@nd.edu> wrote:
>
>> I am successfully using this 10gbe SFP+/LC singlemode 1310nm transceiver
>> from fs.com.
>> FS SFP-10GLR-31
>> I am also using this QSFP+/MTP transceiver (for Intel XL-710 in 4x10gbe
>> mode)
>> FS QSFP-PLR4-40G
>>
>> On Mon, Jul 23, 2018 at 1:10 PM Ashish Chaudhari via USRP-users <
>> usrp-users@lists.ettus.com> wrote:
>>
>>> Hi Zhongyuan,
>>>
>>> >> Does 10Gbps SFP+ transceiver backward compatible with 1Gbps socket?
>>>
>>> No it's not. Depending on what N310 FPGA image you build/use, the port
>>> speeds are locked down. The HG image is 1G on SFP0 and 10G on SFP1
>>> whereas the XG image has 10G on both SFP ports. The transceiver might
>>> support both speeds but the USRP won't.
>>>
>>> >> Could you recommend any SFP transceivers that work on your case? both
>>> >> 1Gbps and 10Gbps.
>>>
>>> What speed do you need for your application? What is the speed of the
>>> switch that you are working with? The solutions for 1Gbps and 10Gbps
>>> are vastly different. Generally speaking fiber-optics that support
>>> 10GBASE-SR, -LR and -ER should work with the N310 when the SFP port is
>>> in 10G mode and optics that support 1000BASE-LX, -SX and -CX should
>>> work in 1G mode. For Ethernet, I should mention that certain switch
>>> and NIC vendors explicitly disallow certain non-approved optical
>>> modules, so on the switch side I would double check with the vendor
>>> that the transceiver works with your switch. On the USRP side, we
>>> accept all optics. I haven't used the specific Finisar module
>>> (FTLX1475D3BCV) but in general we have seen good results with Finisar,
>>> Amphenol FCI and Elpeus transceivers. We do most of our testing with
>>> full cable assemblies, although those might be a bit harder to find
>>> for the lengths that you are looking for.
>>>
>>> As a data point here are the ones that are known to work:
>>>
>>> https://www.mouser.com/ProductDetail/Finisar/FCBG110SD1C03?qs=sGAEpiMZZMsi6nco80NB4Pt5EfrefmupuvEijLXVquZ4ABfDcakyUQ%3d%3d
>>>
>>> https://www.serversupply.com/NETWORKING/TRANSCEIVER/10%20GIGABIT/INTEL/FTLX8571D3BCVIT1.htm
>>>
>>> Thanks,
>>> Ashish
>>>
>>>
>>> On Sat, Jul 21, 2018 at 2:17 PM, Zhongyuan Zhao via USRP-users
>>> <usrp-users@lists.ettus.com> wrote:
>>> > Has anyone tried 10G/1G Dual Rate (10GBASE-LR/LW and 1000BASE-LX) 10km
>>> > 1310nm Single Mode Datacom SFP+ Optical Transceiver?
>>> > https://www.finisar.com/optical-transceivers/ftlx1475d3bcv
>>> >
>>> > Thanks.
>>> >
>>> >
>>> >
>>> > Zhongyuan Zhao
>>> >
>>> > PhD Candidate,
>>> > Department of Computer Science & Engineering,
>>> > University of Nebraska-Lincoln
>>> > Suite 117, Schorr Center,
>>> > Lincoln, Nebraska 68588-0115
>>> >
>>> > On Fri, Jul 20, 2018 at 2:06 PM, Zhongyuan Zhao <zhz...@cse.unl.edu>
>>> wrote:
>>> >>
>>> >> Hi,
>>> >>
>>> >> I am working on a project where several N310s are connected to a
>>> >> fiber-Ethernet switch. The fibers are of single mode with length from
>>> 1km to
>>> >> 10km. My problem is selecting the right SFP transceivers.
>>> >>
>>> >> Currently, I used the official SFP to RJ45 converter (come from Ettus
>>> with
>>> >> N310) followed by another pair of RJ45 to SFP converter.
>>> >>
>>> >>
>>> https://www.amazon.com/gp/product/B06XC1VDMD/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
>>> >> This is a work around solution. I tried to connect N310 and Dell N3048
>>> >> switch (2 SFP ports)
>>> >> directly through a pair of 10Gtek SFP transceivers (1Gbps) that come
>>> with
>>> >> the RJ45 to SFP converter but it does not work.
>>> >>
>>> >> Could you recommend any SFP transceivers that work on your case? both
>>> >> 1Gbps and 10Gbps.
>>> >> Does 10Gbps SFP+ transceiver backward compatible with 1Gbps socket?
>>> >>
>>> >> Thank you very much!
>>> >>
>>> >> Regards,
>>> >> Zhongyuan Zhao
>>> >>
>>> >> PhD Candidate,
>>> >> Department of Computer Science & Engineering,
>>> >> University of Nebraska-Lincoln
>>> >> Suite 117, Schorr Center,
>>> >> Lincoln, Nebraska 68588-0115
>>> >
>>> >
>>> >
>>> > _______________________________________________
>>> > USRP-users mailing list
>>> > USRP-users@lists.ettus.com
>>> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>> >
>>>
>>> _______________________________________________
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>>>
>>
>
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