Re: [Discuss-gnuradio] USRP2 siggen error

[Natalia Olano]

Yes! The problem was the MTU and decreasing it to sharp 1500 worked. I
also updated the firmware image to the one of 3 nov because I could
not see any signal, as in
http://lists.gnu.org/archive/html/discuss-gnuradio/2008-11/msg00037.html.

Thanks for the good advice!
Natalia

2008/11/3 Newman, Timothy <address@hidden>:
> Looks like your MTU is set a bit too small.  Try increasing it to 1500 or 
> maybe a bit higher and see what happens.
>
> /sbin/ifconfig eth0 mtu 1500
>
> Tim
>
> -------------------------------------------
> Timothy R. Newman
> DNI Post Doctoral Fellow
> Wireless @ Virginia Tech
> 447 Durham Hall
> Blacksburg, VA 24061
> Phone: 540-231-2041
>
>
> -----Original Message-----
> From: address@hidden [mailto:address@hidden On Behalf Of Natalia Olano
> Sent: Monday, November 03, 2008 10:20 AM
> To: Eric Blossom; Natalia Olano; address@hidden
> Subject: Re: [Discuss-gnuradio] USRP2 siggen error
>
> Here is the output, thanks for taking some time in this.
> Natalia
>
> address@hidden:/home/nol/mobnets/testbed# /sbin/ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 00:1e:37:1e:ee:4a
>          inet addr:134.130.222.127  Bcast:134.130.222.255  Mask:255.255.255.0
>          inet6 addr: fe80::21e:37ff:fe1e:ee4a/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1400  Metric:1
>          RX packets:16302010 errors:3 dropped:19 overruns:0 frame:2
>          TX packets:21446 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:3178136520 (2.9 GB)  TX bytes:3379674 (3.2 MB)
>          Base address:0x1840 Memory:fe200000-fe220000
>
>
> 2008/11/3 Eric Blossom <address@hidden>:
>> On Mon, Nov 03, 2008 at 11:51:09AM +0100, Natalia Olano wrote:
>>> Hello,
>>>
>>> I am using the USRP2 with an RFX2400 daughterboard in Ubuntu Hardy
>>> 8.04.1, installation went fine (used rev 9913 plus the ready made
>>> firmware images in http://gnuradio.org/releases/usrp2-bin/trunk) and
>>> usrp2_fft.py works perfectly.
>>>
>>> However, I experience the following problem when invoking usrp2_siggen.py:
>>>
>>> address@hidden:/home/nol/gnuradio_V_9913/gr-utils/src/python# python
>>> usrp2_siggen.py -f 2.4G -w 200k
>>> ethernet:write_packetv: send: Message too long
>>> usrp2_sink_32fc: tx_32fc failed
>>>
>>> I would appreciate some help
>>> Thanks
>>> --
>>> Natalia Olano
>>
>> Thanks for pointing out the problem.  I haven't seen this one before.
>>
>> Can you run this command and post the output?
>>
>>  $ /sbin/ifconfig eth0
>>
>> Thanks,
>> Eric
>>
>
>
>
> --
> Natalia Olano Agüero
>
>
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