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--- linux_wiki:persistent_interface_name [2018/03/06 10:03]
billdozor [Enable BIOS Device Names]
+++ linux_wiki:persistent_interface_name [2019/05/25 23:50]
@@ Line 1: / Line 1: @@
-====== Persistent Interface Name ======
-**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.
-**Checklist**
-  * Distro(s): Debian Based or Enterprise Linux
-----
-====== Enable BIOS Device Names ======
-Install biosdevname<code bash>yum install biosdevname</code>
-Enable biosdevname as a parameter passed to the kernel
-  * EL7<code bash>vim /etc/default/grub
-# Add to GRUB_CMDLINE_LINUX values
-GRUB_CMDLINE_LINUX="biosdevname=1"
-</code>
-  * EL6<code bash>vim /boot/grub/grub.conf
-# Append biosdevname=1 to all kernel lines. Example:
-kernel /vmlinuz-2.6.32-279.22.1.el6.x86_64 ro root=/dev/sda3 biosdevname=1
-</code>
-Update Grub config
-  * EL 6: manual changes already made above.
-  * EL 7<code bash>grub2-mkconfig -o /boot/grub2/grub.cfg</code>
-  * 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
-----