[USRP-users] Problem accessing E310 via network

Philip Balister philip at opensdr.com
Sun Mar 27 14:59:39 EDT 2016


On 03/26/2016 08:03 PM, James Bernard via USRP-users wrote:
> Hi all,
> 
> I'm just getting started with the USRP radios so please forgive me if I'm
> missing something obvious. I've searched the archives and read through the
> documentation, and I'm not able to get any results from uhd_usrp_probe via
> the network.
> 
> bash$ uhd_usrp_probe --args addr=172.16.1.34
> Mac OS; Clang version 7.0.0 (clang-700.0.72); Boost_105900;
> UHD_003.009.003-MacPorts-Release
> 
> Error: LookupError: KeyError: No devices found for ----->
> Device Address:
>     addr: 172.16.1.34
> 
> I can both ping 172.16.1.34 and login to it via ssh:
> 
> bash$ ssh root at 172.16.1.34 uhd_usrp_probe
> linux; GNU C++ version 4.9.2; Boost_105700; UHD_003.009.002-0-unknown
> <...>
> |       Device: E-Series Device
> <...>
> 
> I ran a tcpdump while running uhd_usrp_probe and I'm getting port
> unreachable messages:
> 
> 22:55:37.797515 IP 172.16.1.12.63166 > 172.16.1.34.49152: UDP, length 36
> 22:55:37.798390 IP 172.16.1.34 > 172.16.1.12: ICMP 172.16.1.34 udp port
> 49152 unreachable, length 72
> 22:55:37.900204 IP 172.16.1.12.59476 > 172.16.1.34.21761: UDP, length 6
> 22:55:37.901661 IP 172.16.1.34 > 172.16.1.12: ICMP 172.16.1.34 udp port
> 21761 unreachable, length 42
> 22:55:37.955103 IP 172.16.1.12.58671 > 172.16.1.34.21761: UDP, length 6
> 22:55:37.956050 IP 172.16.1.34 > 172.16.1.12: ICMP 172.16.1.34 udp port
> 21761 unreachable, length 42
> 22:55:38.008176 IP 172.16.1.12.54997 > 172.16.1.34.49152: UDP, length 16
> 22:55:38.009017 IP 172.16.1.34 > 172.16.1.12: ICMP 172.16.1.34 udp port
> 49152 unreachable, length 52
> 
> Logging into the E310 I can confirm that nothing is listening on udp/49152.
> I'm running UHD_003.009.003-MacPorts-Release, which is documented as
> supporting the E310.
> 
> I can use X11 forwarding and run uhd_fft for example, but I can't find what
> daemon on the E310 is responsible for responding to the UHD API.

Take a look in the uhd manual, there should be a bit about starting uhd
on the e310 in network mode. Note that network mode is not capable of
high sample rate operation, but is handy for doing some basic tests.

Philip

> 
> - James
> 
> 
> 
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