----- Original Message -----
Sent: Wednesday, July 20, 2011 8:22
PM
Subject: Re: [Discuss-gnuradio]
Connecting to USRP2 with Thinkpad T61 and UHD
On 07/20/2011 10:23 AM, Allen Vinegar wrote:
I have a working configuration with my desktop
computer but can't seem to get it to work with the laptop. When I connect
the USRP2 to the ethernet port (Gigabit) (configured for 192.168.10.1) the
link light fails to go on. I added a second Gigabit interface using a USB to
Gigabit internet dongle at 192.168.10.3. This now shows up as eth1. When I
plug the USRP2 into it the green link light comes on but no activity. Next I
take the network cable connected to my router from the desktop computer and
plug it into eth0. I see a link and activity, eth1 shows a link but no
activity. Next I reverse the two cables, The router cable is plugged into
eth1 the link light is on with activity. The USRP2 is plugged into eth0 and
there is no link at all. Does any one have any ideas on what is going on?
Thank you.
Al W8KHP
Is it possible that your T61 ethernet port
isn't GigE capable?
Also, there are two problems with the USB dongle
setup:
o You assigned it the same subnet address as the
other ethernet interface, so that's likely to cause routing
confusion
o A USB-based GiGe dongle won't actually sustain
1GiGe rates--the maximum it could *possibly* do is 480MBps,
but
in reality it'll likely be closer to
300Mbps, which is only about 1/3rd of what you need.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
_______________________________________________
Discuss-gnuradio
mailing
list
address@hidden
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio