https://community.hpe.com/t5/operating-system-linux/naming-convention-for-eth-interfaces/m-p/4769186#M44002 Adjust the HWADDR=<INTERFACE-MAC-ADDRESS> lines in each /etc/sysconfig/network-interfaces/ifcfg-eth* file to the way you want the NICs to be.<BR /><BR />If you want the NIC with MAC address 11:22:33:44:55:66 to be eth0, then /etc/sysconfig/network-interfaces/ifcfg-eth0 should have this line:<BR /><BR />HWADDR=11:22:33:44:55:66<BR /><BR />If you need to replace the eth0 NIC, the new NIC will have a different MAC address than the old one. So edit the /etc/sysconfig/network-interfaces/ifcfg-eth0 to match the new situation, and the physical NIC -&gt; eth# name will stay the same: if some hardware change would make it different, the OS will automatically re-arrange the cards to make them stay the way you want them.<BR /><BR />If you want to completely disable the re-arrangement system and let the NIC names be assigned in the hardware detection order, then just remove the HWADDR= lines from all ifcfg-eth* files.<BR /><BR />NOTE: the HWADDR= line will control the re-arrangement of eth# names; MACADDR= line would be used to assign custom MAC addresses to NICs. Don't confuse the two, and don't use them both on the same NIC.<BR /><BR />MK</INTERFACE-MAC-ADDRESS> Wed, 23 Mar 2011 14:47:31 GMT Matti_Kurkela 2011-03-23T14:47:31Z https://community.hpe.com/t5/operating-system-linux/naming-convention-for-eth-interfaces/m-p/4769185#M44001 Is there a way to stop the eth# getting re-arranged in RHEL upon reboot and replacing. Any workwounds?<BR /><BR />Thanks<BR /><BR />Brian Wed, 23 Mar 2011 13:52:26 GMT https://community.hpe.com/t5/operating-system-linux/naming-convention-for-eth-interfaces/m-p/4769185#M44001 brian_31 2011-03-23T13:52:26Z https://community.hpe.com/t5/operating-system-linux/naming-convention-for-eth-interfaces/m-p/4769186#M44002 Adjust the HWADDR=<INTERFACE-MAC-ADDRESS> lines in each /etc/sysconfig/network-interfaces/ifcfg-eth* file to the way you want the NICs to be.<BR /><BR />If you want the NIC with MAC address 11:22:33:44:55:66 to be eth0, then /etc/sysconfig/network-interfaces/ifcfg-eth0 should have this line:<BR /><BR />HWADDR=11:22:33:44:55:66<BR /><BR />If you need to replace the eth0 NIC, the new NIC will have a different MAC address than the old one. So edit the /etc/sysconfig/network-interfaces/ifcfg-eth0 to match the new situation, and the physical NIC -&gt; eth# name will stay the same: if some hardware change would make it different, the OS will automatically re-arrange the cards to make them stay the way you want them.<BR /><BR />If you want to completely disable the re-arrangement system and let the NIC names be assigned in the hardware detection order, then just remove the HWADDR= lines from all ifcfg-eth* files.<BR /><BR />NOTE: the HWADDR= line will control the re-arrangement of eth# names; MACADDR= line would be used to assign custom MAC addresses to NICs. Don't confuse the two, and don't use them both on the same NIC.<BR /><BR />MK</INTERFACE-MAC-ADDRESS> Wed, 23 Mar 2011 14:47:31 GMT https://community.hpe.com/t5/operating-system-linux/naming-convention-for-eth-interfaces/m-p/4769186#M44002 Matti_Kurkela 2011-03-23T14:47:31Z