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

Neel Pandeya neel.pandeya at ettus.com
Fri Nov 17 12:00:55 EST 2017


Hello Chad:

By "dual 10 Gigabit Ethernet", we mean that both Port 0 and Port 1 are
being used with 10 Gigabit Ethernet links simultaneously. Both links must
connect to the same host computer; you cannot have one link connected to
system A, and the other link connected to system B.

In GNU Radio, you can receive from your SBX by using a USRP UHD Source
block, and you can transmit with your WBX by using a USRP UHD Sink block.

--Neel Pandeya



On 17 November 2017 at 08:33, Chad Spooner <cmspooner at nwra.com> wrote:

> Neel:
>
> Thanks very much for the helpful reply.
>
> MY x310 has both a SBX and a WBX installed. The working configuration I
> mentioned
> has the WBX transmitting and the SBX receiving simultaneously. But how do
> I get
> data chunks from the SBX while the flowgraph that implements this
> simultaneous
> operation is running? I suppose I can use a File Sink, but I'm not sure
> how to read
> segments of the growing file while it is constantly being written to by
> the SDR/host.
>
> I think something that confuses me about the Ettus online documentation is
> the
> use of the phrases "Dual 1 Gigabit Ethernet" and "Dual 10 Gigabit
> Ethernet." These
> both appear, for example, on the following links:
>
> https://www.ettus.com/product/details/X310-KIT
> https://kb.ettus.com/X300/X310
>
> I thought I understood the "Dual 10 Gigabit Ethernet" from further
> reading, and that
> understanding is consistent with what you say below. But then what does
> Ettus mean
> by "Dual 1 Gigabit Ethernet"?
>
> Thanks again,
>
> C
>
> On Thu, 2017-11-16 at 17:08 -0800, Neel Pandeya 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
>
>
> --
> 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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