No ARP reply

Craig Reading craig.reading1 at gmail.com
Tue Mar 19 17:36:29 UTC 2013


All,

I am 99% certain this is a problem with the USB 2.0 to 10/100/1000 Gigabit
Ethernet LAN Wired Network Adapter I added to my OpenBTS server to solve
another issue. Having looked through the source code and compared good and
bad wireshark traces I can find no difference or bug in the ARP handling.

Hence, time to move on and build up a new dedicated server for OpenBTS
based on Ubuntu 12.04.

Regards
Craig

On 19 March 2013 14:44, Alexander Chemeris <alexander.chemeris at gmail.com>wrote:

> Yes, subnet and gateway EEPROM settings were introduced in UHD
> mainline after we forked our version of UHD. We didn't bother merging
> those changes as we never needed them.
>
> On Tue, Mar 19, 2013 at 6:39 PM, Craig Reading <craig.reading1 at gmail.com>
> wrote:
> > Hi Alexander,
> >
> > I only changed the IP since I do not think changing the mask using the
> > following commands is supported:
> >
> > ./usrp_burn_mb_eeprom --args="addr=xxx.xxx.xxx.xxx" --key=subnet
> > --val=255.255.255.0
> > ./usrp_burn_mb_eeprom --args="addr=xxx.xxx.xxx.xxx"  --key=gateway
> > --val=xxx.xxx.xxx.xxx
> >
> > I'm doing some more tracing soon.
> >
> > Regards
> > Craig
> >
> >
> > On 19 March 2013 12:47, Alexander Chemeris <alexander.chemeris at gmail.com
> >
> > wrote:
> >>
> >> Craig,
> >>
> >> On Mon, Mar 18, 2013 at 10:33 PM, Craig Reading
> >> <craig.reading1 at gmail.com> wrote:
> >> > Moved UmTRX on to 192.168.11.10 and get no ARP reply. I'm probably
> being
> >> > dumb! Just wanted to make sure there is no issue with subnet mask etc.
> >>
> >> Have you changed subnet mask or IP address only?
> >>
> >> Changing IP addresses on UmTRX works fine here. E.g. for the network
> >> at CCC we ran all UmTRX's at 192.168.51.xx subnetwork. I've never
> >> tried to change mask, though.
> >>
> >> If you want to debug - here is the code which controls networking in
> >> ZPU in UmTRX:
> >>
> >>
> https://github.com/fairwaves/UHD-Fairwaves/blob/fairwaves/umtrx/firmware/zpu/lib/net_common.c
> >>
> >> --
> >> Regards,
> >> Alexander Chemeris.
> >> CEO, Fairwaves LLC / ООО УмРадио
> >> http://fairwaves.ru
> >
> >
>
>
>
> --
> Regards,
> Alexander Chemeris.
> CEO, Fairwaves LLC / ООО УмРадио
> http://fairwaves.ru
>
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