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
..........................................................................................................................................................................
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*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
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