Foundations of Linux NIC Configuration Linux network interface management relies on key configuration files found in /etc and related directories, where entries map IP addresses to machine names and define DNS settings. Detailed files in directories like /etc/sysconfig/network-scripts specify the interface settings, including IP addresses, net masks, and device names. These configurations enable bonding of network cards by assigning master and slave roles to enhance connectivity.
Diagnostics and Configuration with Ethtool Ethtool offers a comprehensive set of commands to retrieve and adjust network interface settings, including supported modes, speeds, and detailed performance statistics. It provides quick help options and manual pages to guide adjustments, such as physical identification and speed changes. This utility is instrumental for real-time monitoring and troubleshooting of NIC performance on Linux systems.
Routing and Virtual IP Management Routing commands like netstat and ip route display the current gateway and routing table, ensuring clear visibility of network connections. Additional routes and virtual interfaces can be seamlessly added using ifconfig and ip address commands to extend the system's network capabilities. This structured approach to routing and virtual IP assignment simplifies network management and troubleshooting in Linux environments.