[U-Boot] i.MX6 Packet loss issue on LTIB4.0

[charleshuang]

1) When I use Giga LAN port to download uImage on u-boot, it may occur packet loss issue.

Step 1: Server Building – TFTP Server

Step 2: U-Boot Environment Setting

          a) setenv ipaddr 172.22.16.170

          b) setenv serverip 172.22.16.98

step 3: Download uImage from tftp

Then it occurred packet loss issue.

Do you have any suggestion?

2) I want to try this issue on demo-board, but client and server cannot ping each other.

Can you tell me how to solve this issue?

Thank you.

[b36401]

Such issue may be caused with bad link between 172.22.16.170 and 172.22.16.98.

For example with switch.

By the way please note that even in gigabit mode i.MX6 is unable to reach 1000 Mbps performance.

The theoretical maximum performance of 1 Gbps ENET is limited to 470 Mbps (total for Tx and Rx).

The actual measured performance in optimized environment is up to 400 Mbps.

So if the other side is too quick it can cause packet loss.

As for ping please note that u-boot supports ping onli as client.

I mean it can ping some host but is unable to respond to incoming ping requests.

Have a great day,

Victor

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[charleshuang]

Our device can connect to server. Our device also can ping server.

But demo-board cannot connect to server. Why the demo-board cannot connect to server?

Can you tell me how to solve this issue?

Thanks