Fix Linux Static Route Not Working

There may be several reasons why a static route configuration file in a Linux system is not taking effect.

1. There is an error in the configuration file format. Make sure the syntax, format, and parameters in the configuration file are correct. Different Linux distributions may have different configuration file formats, such as the static route configuration files in CentOS and Ubuntu, which are /etc/sysconfig/static-routes and /etc/network/interfaces, respectively.
2. Check the configuration file permissions to ensure that only the root user has read and write access.
3. Issue with network service restart: After modifying the static routing configuration file, it is necessary to restart the network service in order for the configuration to take effect. You can use the following command to restart the network service:

sudo systemctl restart network

1. System reboot issue: Sometimes after modifying the static route configuration file, a system reboot is required for the changes to take effect.
2. Other configuration conflicts: it could be due to conflicts between routing configurations and other network configurations, which need to be checked and resolved.

If the issue persists after the above checks, you can attempt to manually add a static route using the “route add” command. For example:

sudo route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.0.1

If you are still unable to resolve the issue, it is recommended to check the system logs for more detailed error information and seek help from Linux system documentation or forums.