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Oracle Linux: Understanding Network Interface Naming - ifcfg-XXX: DEVICE, NAME and UUID (Doc ID 2891121.1)

Last updated on AUGUST 25, 2022

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Linux x86-64
Linux ARM 64-bit

Goal

This note is to explain what "UUID" and "NAME" are in network adapter's "/etc/sysconfig/network-screipts/ifcfg-<Device Name>" and how to use them on Oracle Linux.
Network adapter naming can vary depending on several factors, such as hardware, Oracle Linux release, kernel version, use of "/etc/sysconfig/network-scripts/ifcfg-<Device Name>" service to manage interfaces, etc.
Often, the terms "DEVICE" and  "NAME" are used interchangeably to describe network adapters, however, they are separate attributes that serve different purposes.
This document defines the terms "DEVICE",  "NAME" and  "UUID as used within network adapter configuration files "/etc/sysconfig/network-screipts/ifcfg-<Device Name>" and their use on Oracle Linux.

Solution

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In this Document
Goal
Solution
 1. Differentiate network adapter ifcfg-XXX file "DEVIC", "NAME" and "UUID"
 2. Changing network adapter "NAME"
 2.1 Manually modify ifcfg-eth2
 2.2 Check active network connections managed by NetworkManager
 2.3 Changing eth2's connection name 
 2.4 Verify change made in ifcfg-eth2
 3. How to change UUID
 3.1 Checking UUID for the current active connections
 3.2 Making change to the config file ifcfg-eth2
 3.3 Reload configurations
References


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