[CentOS] CentOS7 sometimes don't detect NIC after reboot

Miroslav Geisselreiter

mg at intar.cz
Wed Nov 20 14:35:59 UTC 2019

Dne 17.9.2019 v 17:34 Ralf Prengel napsal(a):
> Am 17.09.2019 um 16:31 schrieb Miroslav Geisselreiter:
>>> Hallo,
>>> perhaps a timing problem until the nic is up or a bios bug.
>>> Ralf
>> Thank you, Ralf. I will check if there is a new bios. If it is timing 
>> problem, can I do anything to solve this?
> Use a delay in the grub config to verify that the nic is active before 
> booting.
> For testing you can insert sleeps in the starting scripts to identify 
> timing problems.
> If both cards are connected with the switch does anything change when 
> the cables are changed a to b and b to a?
> Ralf
I set the delay and it seems to have helped. After several restarts 
without problems.


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