Jetson Linux 32.7.3 (Jetpack 4.6.3)
I confirmed it with an NVIDIA development board.
Ethernet goes down intermittently.
Mar 17 06:22:07 ubuntu kernel: [138798.936898] eqos 2490000.ether_qos eth0: Link is Down
Mar 17 06:22:09 ubuntu kernel: [138801.613498] eqos 2490000.ether_qos eth0: Link is Up - 1Gbps/Full - flow control rx/tx
It would be helpful if you could tell me how to deal with this issue as L4T.
We have to explain to our customers.
If L4T doesn’t fix this issue in a future version upgrade, we have to tell our customers.
One thing I will suggest is that link layer negotiation is a transaction between both host and the network switch. Either end can cause lower link speeds. You would probably need a network analyzer to find out what is going on whereby it actually drops to a lower link speed. Manually setting speed of course won’t care about auto negotiation.
Another possibility is that even if both switch and host are running perfectly, it is possible that too long of a cable, or a lossy cable, could produce the need to lower speed. An unshielded lower quality cable is also a problem if in a noisy environment.