On 22 Jan 2013 13:29, Justyn Bell wrote:
> Hello list, > > Hopefully this is an appropriate place to ask this question: > > I'm trying to connect a host machine to a switch in which a USRP N210 is also connected. I have configured the host machine's IP to be static on the 192.168.10.0/24 subnet, and can successfully ping the N210 at 192.168.10.2. However, when I try to do a "uhd_usrp_probe", the command simply returns the following: > > linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-152-gdb8f128e > > Error: Connection refused > > I have also tried to do "uhd_usrp_probe --args="addr=192.168.10.2" in which case it returns the following: > > linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-152-gdb8f128e > > Error: LookupError: KeyError: No devices found for -----> > Device Address: > addr: 192.168.10.2 > > My first thought was that it is some kind of firewall issue, so I issued a "sudo ufw disable", but the results didn't change (when trying to probe, it returns the above errors, I can still ping). > > According to http://files.ettus.com/uhd_docs/manual/html/usrp2.html#setup-networking [1], "When the IP address is not specified, the device discovery broadcasts UDP packets from each ethernet interface." Which implies that broadcast UDP packets are not sent when an IP _is_ specified (which is what I did in my second attempt to probe the USRP), so I don't think it's a firewall issue. > > The switch is a Netgear GS608 which I don't think has "broadcast storm" control, anyway. > > Thanks for any help on the issue. > > -- > Justyn Simple test. Does it all work when directly connected? (Or are you using a switch because your host doesn't support 1GiGe?) Links: ------ [1] http://files.ettus.com/uhd_docs/manual/html/usrp2.html#setup-networking
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