network link is not coming up after we flap the link with 14 and 16.04.
#link up and running traffic>
ethtool eth x
#link stays down on server and wont recover expect reboot
BUT switch interface is UP and UP running Tx counters are increments and Rx null. This is the same link one side up and other side is down!
This issue is not consistent, we tested same server week ago and saw issue, not this week!
What we can get in case we see the issue again? tcpdump wont show anything as interface is down and not counters increment.
No physical issue, as happening on different hardware enclosure and works fine after reboot.
Thanks in advance.