Date: Mon, 3 Nov 2008 07:41:33 -0800
From: Eric Blossom <[email protected]>
Subject: Re: [Discuss-gnuradio] USRP2 siggen error
To: Natalia Olano <[email protected]>
Cc: [email protected]

On Mon, Nov 03, 2008 at 04:19:39PM +0100, Natalia Olano wrote:
> Here is the output, thanks for taking some time in this.
> Natalia
>
> root@laforge:/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

Interesting.  You've got an MTU of 1400 instead of 1500.

Do you have any idea of why that might be?

In any event, I'll fix the code so that we check the actual MTU.
This might take a couple of days, given everything else on my plate.

Eric

> 2008/11/3 Eric Blossom <[email protected]>:
> > 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:
> >>
> >> root@laforge:/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