I have always tied MAC addresses to the EthX ports. One problem solved. -Miles
On Sep 11, 2019, at 09:09, Steven C Timm <[email protected]<mailto:[email protected]>> wrote: At Fermilab we have a lot of machines on which systemd/udev still falls through to the unpredictable ethX system of naming (#5 scheme in the article you referred to below) and whose eth0-eth4 rearrange themselves on every reboot. Quite an issue if you are trying to make bridged networks out of them. Since Francesco's system is using the 3rd method and calling his interface enp3s0, that is not his problem. think his main problem is getting a link light--and those can come and go as well in most versions of SL7. Steve ________________________________ From: Teh, Kenneth M. <[email protected]<mailto:[email protected]>> Sent: Wednesday, September 11, 2019 9:02 AM To: Steven C Timm <[email protected]<mailto:[email protected]>>; scientific-linux-users <[email protected]<mailto:[email protected]>>; [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Subject: Re: Missing eth0 after upate to 7.7 systemd based machines don't use ethX anymore. There is a more reliable naming scheme described here. > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.freedesktop.org_wiki_Software_systemd_PredictableNetworkInterfaceNames_&d=DwIF-g&c=gRgGjJ3BkIsb5y6s49QqsA&r=10BCTK25QMgkMYibLRbpYg&m=vZT0HjMvd2fgq2QWE2bKe2tPO2kV2oZlv4_YnyhdXPc&s=zgJQ8rvbvqFcZwlaL-M3FTu-OUoFYlH0yXXWzuTbcBw&e= I've been using the #3 scheme which is based on the geographical location of the network card. The system will prefer schemes #1 and #2 if the bios numbers them but #3 always works nevertheless during installs. On 9/11/19 6:51 AM, Steven C Timm wrote: > I don’t know about your machine but I have seen on other SL7 machines that > what > was eth0 turns to eth1 and so forth. Do ifconfig -a > That will show you all interfaces on the machine. Then use ethtool on them to > see which one has the link. > > Steve > -------------------------------------------------------------------------------- > *From:* > [email protected]<mailto:[email protected]> > <[email protected]<mailto:[email protected]>> > on behalf of Francesco Alfano > <[email protected]<mailto:[email protected]>> > *Sent:* Wednesday, September 11, 2019 6:42:05 AM > *To:* scientific-linux-users > <[email protected]<mailto:[email protected]>> > *Subject:* Missing eth0 after upate to 7.7 > I have update to 7.7 and now i missing network connection: > The ifconfig eth0 returns > Device not found. > > How can I resolve the problem ?
