Hi Casper group,
We managed to take the FPGA 1GBE on ROACH2 fully under control, great thanks to John, Marc, Danny, Jack, and Jason! Wireshark was extremely helpful, as it can see packets as long as the receiver's IP is set correctly. For python grabbing to work, it turned out that we simply had to configure the sender's IP to have the same subnet as the receiver IP (meaning the first 3 segments of the IP). Thanks again! ________________________________ From: casper-boun...@lists.berkeley.edu [casper-boun...@lists.berkeley.edu] on behalf of Danny Price [danny.pr...@astro.ox.ac.uk] Sent: Monday, January 21, 2013 3:39 AM To: casper@lists.berkeley.edu list Subject: Re: [casper] debugging communication with one_GbE from roach-2 's fpga Hi Ionna, Jeff In addition to John and Mark's suggestions, I'd recommend checking: 1) If you're using SELinux, disable it as it causes all sorts of grief. 2) Check the MTU on your ethernet port is set to be larger than your packet size. 3) Make sure that you don't have a firewall up on that port. 4) Check if your Ethernet port is going down when the FPGA is reprogrammed (if you've got a switch in between this shouldn't happen). If you've already checked your socket with roach1 UDP code, then most of these points are moot. Hopefully one stands out though... Cheers Danny
