On 7/15/21 2:39 PM, Ken Smith via CentOS wrote: > Hi folks, I'm a bit confused about how to set up two network cards in > different LANS in C8. I've done this multiple times in Centos6 and > lower, but in the NetworkManager/systemd world I'm all at sea without > any charts. (I'm sure there's a HKLM in there somewhere -sorry ;-)) and > my Googlefoo is failing me this evening. > > Via the GUI it will let me configure one device or the other but not > both :-( > > Anyway I want one NIC with IP 10.100.0.2/24 and GW 10.100.0.1 > and the other with IP 10.2.0.2/24 and no gateway. > > I've seen a method that removes NetworkManager and installs > network-scripts then configures the ifcfg-eth0 and ifcfg-eth1 scripts. > Interestingly the devices seem to be still called eth0 & 1 on this > system which happens to be a VM. When I use this method the systemctl > start network appears not to be able to find eth1. > > Is there a recommended way to do this? I'd prefer to use 'approved' > techniques rather than work arounds. > > Any suggestions? > This is for Debian, but it must be the same in CentOS. Being in Debian a "beginner" who fled CentOS, this one operation (configuring second network card) is the last only operation which I still use GUI for, not command line tools or Better editing config files... Start network manager editor (on Debian the command is: nm-connection-editor) Click Ethernet click "+" choose "Ethernet" as connection type. change name of new connection to "Wired connection 2" and configure all parameters, make sure you choose correct ethernet adapter in one of dro-downs. I hope, this helps. Valeri > Thanks > > Ken > > > -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++