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--- linux_wiki:persistent_interface_name [2017/05/12 23:40]
billdozor
+++ linux_wiki:persistent_interface_name [2019/05/25 23:50] (current)
@@ Line 3: / Line 3: @@
 **General Information**
-Persistent network interface names prevent interfaces being renamed from "eth0" to "eth1" upon reboot. Instead, a name based upon BIOS/firmware information can be used if available.
+Persistent network interface names prevent interfaces being renamed from "eth0" to "eth1" upon reboot.\\
+Instead, a name based upon BIOS/firmware information can be used if available.
 **Checklist**
@@ Line 25: / Line 26: @@
 kernel /vmlinuz-2.6.32-279.22.1.el6.x86_64 ro root=/dev/sda3 biosdevname=1
 </code>
+Update Grub config
+  * EL 7<code bash>grub2-mkconfig -o /boot/grub2/grub.cfg</code>
+  * EL 6: manual changes already made above.
+  * Ubuntu<code bash>update-grub</code>
+===== Naming Scheme Preference =====
+The following preference order is used for biosdevname:
+  - Firmware/BIOS index numbers for on board devices
+    - Example: eno2
+    - Not Available?: Fallback to number 2
+  - Firmware/BIOS provided PCI Express slot index numbers
+    - Example: ens2
+    - Not Available?: Fallback to number 3
+  - Physical Location of the connector
+    - Example: enp3s0
+    - Not Available?: Fallback to number 5
+  - Interfaces MAC address (not used by default, but can be user selected)
+    - Example: enx080027e468c1
+    - Not Available?: Fallback to number 5
+  - Traditional unpredictable naming
+    - Example: eth0
 ----