[USRP-users] Independent use of ethernet ports on Ettus x310?

Derek Kozel derek.kozel at ettus.com
Fri Nov 17 07:08:44 EST 2017


Hi Chad,

To add to what Neel said, no matter the FPGA image or Ethernet type a USRP
cannot be accessed from two computers at the same time. The device is
claimed as the first action when a connection is made to it by a program.

Regards,
Derek

On Fri, Nov 17, 2017 at 1:08 AM, Neel Pandeya via USRP-users <
usrp-users at lists.ettus.com> wrote:

> Hello Chad:
>
> If you are using 1 Gigabit Ethernet, then only one of two SFP ports in the
> rear of the X300/X310 can be used. If you have 10 Gigabit Ethernet, then
> the second SFP port can be used. Please see the link below. The SFP ports
> are configured depending on which FPGA image is being used.
>
> http://files.ettus.com/manual/page_usrp_x3x0.html#x3x0_load_
> fpga_imgs_fpga_flavours
>
> Regarding your use-case, if you have a second daughterboard in your
> X300/X310, then you can simultaneously receive in parallel. With two
> daughterboards, the X300/X310 provides two transmit chains and two receive
> chains.
>
> What is the configuration of your system?
>
> --Neel Pandeya
>
>
>
> On 15 November 2017 at 17:34, Chad Spooner via USRP-users <
> usrp-users at lists.ettus.com> wrote:
>
>> All:
>>
>> I'm wondering how to use the second ethernet port on my x310. I've been
>> going through the
>> online Ettus SDR help, but can't seem to find the right pages.
>>
>> The short version of my question is: Can I use the two ethernet ports
>> independently, say
>> when each of them is connected to a separate computer? If so, how do I
>> set up the second
>> port? I'm using computers with 1 GiG Ethernet only.
>>
>> Details/Context: I have a working gnuradio companion flowgraph that
>> generates a signal indefinitely
>> and applies it to (A:0, Tx/Rx). That output port is connected by a cable
>> to (B:0, RX2).  All indications are
>> that this is working well. At irregular intervals, I want to obtain large
>> numbers of samples from
>> (B:0, RX2) by calling, say, uhd_rx_cfile or the like, outside of the
>> flowgraph, which is still
>> running. I'm prevented from doing that while the flowgraph is running.
>> Can I do it using the
>> second 1 GiG port if I set it up properly?
>>
>> Thanks for any advice you can offer.
>>
>> Chad
>>
>> --
>> Chad M. Spooner
>> NorthWest Research Associates
>> 301 Webster Street
>> Monterey, CA 93940cmspooner at nwra.com831 582 4904 <(831)%20582-4904>
>> cyclostationary.blog
>>
>>
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>> USRP-users at lists.ettus.com
>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>
>>
>
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