Thanks a lot Michael and cedric for taking time to answer my questions.. I will try to stop the network manager and see if that helps.
Regards Venkatesh On Thursday, September 3, 2020, Michael Dickens <michael.dick...@ettus.com> wrote: > In my experience, this happens when the networking isn't stable, which can > be for all sorts of reasons: > > * connectors / cables are flaky; > > * host SW configuration isn't quite correct; > > * actual NIC has issues, HW or FW / configuration; > > * USRP NIC has issues ... very rare, but it can happen; > > * USRP FPGA has issues ... again rare, but it can happen; > > * USRP filesystem has issues ... could be the FS itself, or > configuration ... this happens sometimes & is usually resolved by > overwriting the whole SDcard filesystem & starting from "go" there. > > If you're Linux has the network manager, that doesn't help things since it > thinks it knows better than you what to be doing. > > There is no "one size fits all" answer unfortunately; just investigate the > networking & make sure all of the parts are functional. > > Hope this is useful! - MLD > > On Thu, Sep 3, 2020 at 3:30 AM Cedric Roux via USRP-users < > usrp-users@lists.ettus.com> wrote: > >> maybe network manager (if you have that thing running) on the >> computer doing funny things with the interface? I had this >> issue with some 4g dongles in the past. >> >> On 2020-09-03 01:01, Venkatesh Sathyanarayanan via USRP-users wrote: >> > Hi, >> > >> > Small correction: >> > >> > *Questions:* >> > I notice that the test stops when the link goes down every 45 seconds. >> > This happens for all types of tests(with and without GUI). >> > Kindly let me know how to debug this - i.e. why the link goes down >> every >> > 45 seconds? >> > >> > Regards >> > Venkatesh >> > >> > On Wed, Sep 2, 2020 at 3:10 PM Venkatesh Sathyanarayanan >> > <vesat...@eng.ucsd.edu <mailto:vesat...@eng.ucsd.edu>> wrote: >> > >> > Hi, >> > >> > >> > *Setup details:* >> > I am using an USRP N310 and I have the host computer connected to >> > the USRP via SFP cable. I additionally have a serial connection >> > between the two and have a screen session running. >> > >> > *Observation:* >> > On the screen session, I noticed the following messages: >> > [ 2151.041079] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2195.841088] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2196.961090] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2241.761098] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2242.881106] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2287.681109] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2288.801114] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2333.601129] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2334.721127] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2379.521132] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2380.641137] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2425.441143] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2426.561149] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2471.361159] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2472.481166] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > [ 2517.281166] nixge 40000000.ethernet sfp0: Link is Down >> > [ 2518.401171] nixge 40000000.ethernet sfp0: Link is Up - >> > 10Gbps/Full - flow control off >> > ........................................................... >> ............................................................ >> ................................................... >> > ........................................................... >> ............................................................ >> ................................................... >> > >> > ........................................................... >> ............................................................ >> ................................................... >> > ........................................................... >> ............................................................ >> ................................................... >> > >> > *Questions:* >> > When I have a GNU radio GRC running with an active GUI displaying >> > the spectrum, I see that it halts at the time when the link goes >> down. >> > When I run a file with no GUI active - say IQ samples saved to a >> > file, things running in the background and I do not see any >> > interruption. >> > >> > 1. Kindly let me know why I am seeing this issue of link going down >> > every 45 seconds and >> > 2. also if this could potentially affect my tests (all my tests are >> > without any GUI.) >> > >> > >> > Regards >> > Venkatesh >> > >> > >> > _______________________________________________ >> > USRP-users mailing list >> > USRP-users@lists.ettus.com >> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > >> >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> >
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