Issues with USRP N310 for srsRAN gNB with COTS UEs experiment

[Faisal.RAN]

I would like to connect and configure the USRP N310 device with our host computer which is running on Ubuntu 22.04.3 LTS. I was following to follow the instructions from the following webpage:https://docs.srsran.com/projects/project/en/latest/tutorials/source/cotsUE/source/index.html  to perform the COTS UE test. But it did not work at all for USRP N310.

Any guideline regarding this will be highly appreciated as nothing much is available anywhere. Thank you.

[MohamedBenz]

I have -I believe- the same issue with N310, after running "uhd_find_devices" it shows "No UHD Devices Found" despite the device being connected by ethernet interface.

[GDEV]

Which version of UHD are you using? How is your N310 connected to the host in which you run the "uhd_find_devices" command?

FYI: Here is the USRP_N300/N310/N320/N321_Getting_Started_Guide.

[MohamedBenz]

Hello,

I am using UHD version 4.7.0, and the N310 is connected via a 1GB ethernet interface.

Is the issue within the ethernet interface??

thank you.

[GDEV]

Hi MohamedBenz,

what do you mean with connected via a 1GbE interface? Are using the build in 10/100/1000 RJ-45 ethernet port or are you using 1G interface via SFP to RJ45 in the sfp0 port?
Note, that the build in 10/100/1000 RJ-45 ethernet port is configured for DHCP, while the sfp0 port has a static IP address.

Please see section https://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide#Setting_Up_a_Streaming_Connectio..., on the defaults for the static IP addresses and how to change them.

The uhd_find_devices tool is also only able to detect your USRP if its IP address is in the same subnet.