I am using Ubuntu 18.04, an N310 with the current master builds. I am currently testing basic operation using a USB/Ethernet adaptor for the management connection, and a 1 GB Ethernet connection straight from the computer's NIC port to the SFP0 port on the N310.
I have built from source and can make it through all of the examples and benchmarking exercises successfully. I am also able to successfully run the tx_waveform example with a streaming rate of 25e6 with a master clock rate of 125e6. This seems to be the limit, 31.25e6 causes underruns. Despite the streaming link seeming to work, there are chronic warnings such as: "[WARNING] [MPMD] Could not determine link speed; using 1GibE max speed of 125000000 The network connections were set up within Ubuntu's network manager, with MTUBytes = 8000 (also set in the N310's /etc/system/network/ files). Autonegotiation is enabled on both ends, per ethtool outputs. Any input on where these warnings originate, and if there is a way to suppress them? Thank you Dan
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