There's no switch between the machine and USRP2. I did ethtool, and it was on for all three. When TX is disabled, strangely I am seeing a slower speed leaving some gaps between signals.
Thanks! Jung Il ----- "Eric Blossom" <[email protected]> wrote: > On Mon, Dec 21, 2009 at 03:31:23PM -0800, Jung Il Choi wrote: > > Hi, > > > > I am using ucla-zigbee stack for continuously transmitting a fixed > > symbol (all zeroes) for 802.15.4. > > I finally made it to work on USRP2 with RFX2400, but now my > > machine's kernel freezes after 5~10 minutes (even no ping > > responses). Basically, using sig_source I generate a stream of a > > constant 0's, and feed it to 802.15.4 modulator to transmit O-QPSK > > signal. > > > > When I do packetized transmissions once a second, I do not see the > > freezing problem. I only see this when I continuously transmit. > > > > Does anyone has any clue/suggestion? I am using Ubuntu 8.04 with > the > > kernel 2.6.24-21, and using D-Link DGE-560T gigabit pci-express > > adapter. > > Thanks, > > Jung Il Choi > > Is there a switch between your machine and the USRP2? > > If you type > > $ ethtool -a eth0 > > what does it display? (assuming eth0 is the interface the usrp2 is > connected to) > > I would expect: > > $ ethtool -a eth1 > Pause parameters for eth1: > Autonegotiate: on > RX: on > TX: off > > > Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
