Hello, I just setup an E320 with a 1Gbps SFP. I've updated the filesystem, FPGA load (with the "1G" build"), etc and am using UHD 4.0. uhd_usrp_probe seems happy, and I created a gnuradio flowgraph and streamed samples ok. I did not test throughput, though.
What concerns me is that when I connect to the E320 via serial console and boot, I see this: [ 23.592701] nixge 40000000.ethernet sfp0: Link is Up - 10Mbps/Half - flow control off [ 23.733169] nixge 40020000.ethernet int0: Link is Up - 10Mbps/Half - flow control off If I check with ethtool on the E320, I see: ---------------------------- Settings for sfp0: Supported ports: [ TP MII ] Supported link modes: 1000baseT/Half 1000baseT/Full Supported pause frame use: Symmetric Receive-only Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: 1000baseT/Half 1000baseT/Full Advertised pause frame use: Symmetric Receive-only Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 10Mb/s Duplex: Half Port: MII PHYAD: 0 Transceiver: internal Auto-negotiation: off Link detected: yes ------------------------------------ I know that the SFP is directly connected to the FPGA, and the load I put on the FPGA is for 1gbps. Is the ethtool reported speed of 10Mbps and duplex=half even meaningful? By the way, our network switch that the sfp is ultimately connected to shows a 1gbps/full duplex connection on that port. I'm just a little confused with what is happening between linux/ethtool/ARM vs the FPGA SFP connection and whether or not I actually have a speed/duplex problem. Thanks, Jim
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