Fixed
Created: Nov 17, 2016
Updated: Sep 8, 2018
Resolved Date: Dec 7, 2016
Found In Version: 7.0.0.20
Fix Version: 7.0.0.22
Severity: Severe
Applicable for: Wind River Linux 7
Component/s: Networking
Hi,
We have noticed a large number of drops and error on LMT Ethernet interface (transmit error and overrun counters increase on the eth0). The problem with out of order and retransmissions seen in the LAN traces only shows on the LMT port which is as also the only port were transmit errors are reported by the OS. Errors occurs in both directions but only the DU reports them, network switches in the other end seems to see no problem. We have not noticed any problems with an internal link in the DU, or possibly that the PHY for the LMT port is sensitive to electromagnetic interference. The port is special as it shares contact with a serial interface.
It is possible that we get link discovery packets from the network switches, but those should in that case show as ignored or dropped not as errors. The latter would be very confusing and it still doesn’t explain why we see transmit errors on the eth0 interface.
eth0 Link encap:Ethernet HWaddr 04:4e:06:ce:e9:e3
inet addr:10.68.110.83 Bcast:10.68.110.127 Mask:255.255.255.128
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:515533 errors:21 dropped:215756 overruns:0 frame:3
TX packets:241388 errors:79 dropped:0 overruns:4 carrier:0
collisions:0 txqueuelen:1000
RX bytes:48087759 (45.8 MiB) TX bytes:304243899 (290.1 MiB)
Interrupt:36
eth0 Link encap:Ethernet HWaddr a4:a1:c2:62:6c:a8
inet addr:10.67.224.21 Bcast:10.67.224.255 Mask:255.255.255.0
inet6 addr: fe80::a6a1:c2ff:fe62:6ca8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:26332612 errors:0 dropped:2627187 overruns:0 frame:0
TX packets:1219591 errors:7406762 dropped:0 overruns:7 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2073287189 (1.9 GiB) TX bytes:651492643 (621.3 MiB)
Interrupt:36
Could you please help to figure out the reason of the errors?
Thanks,
